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  • Welcome to Gear Crushers!

    So what the heck is Gear Crushers all about?  We are about loving more than just offroad or just street or just motorcycles.  We love all of it!  Too many clubs are focused on one thing like Jeeps or Motocross but we like everything.  We believe we can love more than just one focus.  Let's focus on all that is cool and crush them gears.

    drag.jpg          jeep-atv.jpg

    This site is dedicated to anyone who enjoys the sound of an engine, the smell of fuel burning, the adrenaline of tackling challenges while crushing those gears.

    We are not biased towards one type of vehicle, make or model. We can appreciate the passion no matter what you are working on, driving, admiring, polishing, designing.

    Gear Crushers are for those of us that want to break the mold and have one site that has something for everyone since many of our passions can easily cross. An engine or trans or axle or tires etc may work on something else in a completely different group.  Troubleshooting could also be similar.

    I don’t find it fair that we have to choose “exactly” what we have to be on different websites or groups even though our passion may stretch amongst multiple types of vehicles so here you go. Gear Crushers covers anything that runs fuel.  Community driven. Cool logo. Non-biased fun.=

    Enjoy as we keep improving the site!  We are under construction since our site was hacked and destroyed.  We moved to a more solid website and its now also encrypted using an SSL cert so we should have a better shot at keeping up and running.  We also learned to back up the site so nightly backups are happening now.


  • Check out our latest Blog entries
    A blog is like a diary and below we share with you some of the latest public blog entries.  All members of Gear Crushers can create a site wide blog or club focused blog entries and if you have permissions (meaning you are a member of the club(s) that have blog entries) you will see them here as an option or just go to the club and check out the blogs they have.

  • Blogs

    1. Engine Talk

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      Recent Entries

      Although all of Chevrolet's siblings of the period (Buick, Cadillac, Oldsmobile, Pontiac, and Holden) designed their own V8s, it was the Chevrolet 305 and 350 cu in (5.0 and 5.7 L) small-block that became the GM corporate standard. Over the years, every American General Motors division except Saturn and Geo used it and its descendants in their vehicles.

      In 1991, GM created a new-generation small-block engine called the "LT1 350", distinct from the high-output Generation I LT-1 of the 1970s. It displaced 5.7 L (350 cu in), and was a 2-valve pushrod design. The LT1 used a reverse-flow cooling system which cooled the cylinder heads first, maintaining lower combustion chamber temperatures and allowing the engine to run at a higher compression than its immediate predecessors.

      LT1 engine was used in:


      • 1992–1996 Chevrolet Corvette C4


      • 1993–1997 Chevrolet Camaro Z28, B4C and SS
      • 1993–1997 Pontiac Firebird Formula, Trans Am, and Firehawk


      • 1994-1996 Buick Roadmaster
      • 1994–1996 Chevrolet Caprice
      • 1994–1996 Chevrolet Caprice Police Package
      • 1994–1996 Chevrolet Impala SS
      • 1994–1996 Chevrolet Caprice Wagon
      • 1994–1996 Buick Roadmaster Wagon


      • 1994–1996 Cadillac Fleetwood

      There were a few different versions of the LT1. All feature a cast iron block, with aluminum heads in the Y and F bodies, and cast iron heads in the B and D bodies. Corvette blocks had four-bolt main caps, while most other blocks were two-bolt main caps. Block castings remained the same between 2 and 4 bolt mains.

      The 92–93 LT1s used speed density fuel management, batch-fire fuel injection and a dedicated Engine Control Module (ECM). In 94 the LT1 switched to a mass airflow sensor and sequential port injection. A new, more capable computer controlled the transmission as well as the engine and got a new name: Powertrain Control Module (PCM). Where the ECM held its calibration information in a replaceable PROM chip, the 94-95 OBD1 PCMs are reprogrammable through the diagnostic port.

      The LT4 was available on the following vehicles:

      • 1996 Chevrolet Corvette only when equipped with 6-speed manual transmission (includes all Grand Sports) (Production: 6,359)
      • 1997 Chevrolet Camaro SLP/LT4 SS 6-speed (Production: 100 for the U.S., 6 for Canada. There were 2 prototypes)
      • 1997 Pontiac Firebird SLP/LT4 Firehawk 6-speed (Production: 29)

      The LT4 was the special high-performance version of the new-generation LT1. It featured a slightly more aggressive camshaft profile, 1.6:1 aluminum roller rocker arms, lighter hollow intake valves and liquid-sodium filled exhaust valves, larger fuel injectors, performance crankshaft, higher 10.8:1 compression ratio and high-flow intake manifold (painted red) with extra material above the port available to allow port matching to the raised port LT4 cylinder heads. The LT4 was conservatively underrated at 330 hp (246 kW) and 340 lb⋅ft (461 N⋅m). It was introduced in the 1996 model year, for the last year of the C4 Corvette, and came standard on all manual transmission (ZF 6-speed equipped) C4 Corvettes. The engine was passed down to 1997 SLP Camaros SS and SLP Firehawks with 6-speed manual transmissions.

      For model year 1990, Chevrolet released the Corvette ZR-1 with the radical Lotus Engineering-designed double overhead cam LT5 engine. Engineered in the UK but produced and assembled in Stillwater Oklahoma by specialty engine builder Mercury Marine, the all-aluminum LT5 shared only the 4.4 inch bore spacing with any previous sbc engine. It does not have reverse cooling and is generally not considered a small block Chevrolet.

      The LT5 was available on the following vehicles:

      • 1990-1995 Chevrolet Corvette C4 ZR-1 equipped with 6-speed manual transmission (Production: 6,939). Although the LT5 was never used in another production GM vehicle, it did make its way into several Corvette concepts, race cars and even into a limited run of the Lotus Elise GT1.
      Gen I Years Engine option code (VIN identifier) Power (hp) Torque (lb.-ft.) Displacement (c.i.) Fuel (octane) Bore x Stroke (in) Compression ratio Block & heads (iron or aluminum) Block features
      I 1996 - 02 L30 (M) 220@4600 290@2800 305   3.743 x 3.48 9.1:1 Iron Truck/van only
      I 1987 - 95 L03 (E/H) 170@4400 255@2400 305   3.743 x 3.48 9.1:1 Iron TBI; passenger car used roller cam
      I 1988 - 96 L05 (K) 210@4400 300@2800 350   4.0 x 3.48 9.3:1 Iron TBI; 9C1 optioned Caprice and F-bodies had hydraulic roller cam
      I 1978 - 88 LG4 (F/H) 150-170@4600 240-250@2800 305   3.743 x 3.48 8.6:1 Iron 4bbl Quadrajet
      I 1981 - 86 LE9 (F) 165@4400 240@2000 305   3.743 x 3.48 9.5:1 Iron Truck/Van only - electronic spark control module used
      I 1982 - 83 LU5 165-175   305   3.743 x 3.48 ?:1 Iron "Crossfire EFI 5.0L"
      I 1967 - 80 L48 (K) 165-195 380 350   4.0 x 3.48 8.25-10.5:1 Iron  
      I 1969 - 70 L46 350   350 93req 4.0 x 3.48 11.0:1 Iron Corvette only
      I 1969 - 76 L65 145 220 350 87 4.0 x 3.48 8.5:1 Iron 2bbl
      I 1969 - 88 LM1 (L) 155-175   350   4.0 x 3.48   Iron 4bbl Rochester Quadrajet (4MV, M4MC, E4ME); retail option until 1981 when last used with the Camaro Z28; post-1980 use of the LM1 was for 9C1-optioned B (Caprice, Impala) and G-bodies (Malibu)
      I 1970 - 74 ZQ3 190-300 270-3500 350   4.0 x 3.48 8.5-10.25:1 Iron 4bbl, Corvette. L48 camshaft
      I 1970 - 72 LT1 250-370@6000 270-300@4000 350   4.0 x 3.48 9.1:1 Iron 4bbl
      II 1992 - 97 LT1 (P) 260-305@4800-5200 325-340@2400-3400 350 91 OCTANE 4.0 x 3.48 10.4:1 Iron (Aluminum FOR F and Y Bodies) Reverse Flow Heads
      I 1973 - 80 L82 205-250 255-285 350   4.0 x 3.48 9:1 Iron 4bbl Rochester Quadrajet; flat top pistons with a D-shaped relief cut for valve clearance
      I 1981 L81 190 280 350   4.0 x 3.48 8.2:1 Iron 4bbl Rochester Quadrajet (E4ME), Corvette
      I 1970 - 86 LS9 (L) 165@3800 275@1600 350   4.0 x 3.48 8.2:1 Iron 4bbl, truck
      I 1981 - 86 LT9 (M) 160@3800 250@2800 350   4.0 x 3.48 8.3:1 Iron 4bbl, truck
      I 1982 - 84 L83 200-205 285-290 350   4.0 x 3.48 9.0:1 Iron CrossFire
      I 1985-92 L98 (8) 225-250@4000 330-345@3200 350   4.0 x 3.48 9.5-10:1 Iron/Aluminum (Corvette) TPI
      I 1996-02 L31 (R) 255-350@4600 330-350@2800 350   4.0 x 3.48   Iron truck, Vortec
      I 1970-80   245-265   400   4.120 x 3.75   Iron 70-72 4bolt main, 73-80 2bolt main
      I 1975-76   110 133@3600 262   3.671 x 3.1   Iron Nova and Monza only; 2bbl Rochester 2GC carburetor
      I 1994-96 L99 (W) 200 245 263   3.736 x 3.0   Iron reverse cooling, Caprice, special ops, police vehicles
      I 1983-88 L69 (G) 180-190@4800 240@3200 305   3.743 x 3.48 9.5:1 Iron H.O., Firebird/Camaro, Monte Carlo SS only
      I 1985-92 LB9 (F) 190-230 275-300 305   3.743 x 3.48   Iron TPI, Firebird/Camaro only
      I 1976-82 LG3 (U) 145@4400 245@2400 305   3.743 x 3.48 8.5:1 Iron 2bbl


    2. guru
      Latest Entry

      What do you use offroad to keep track of where you are going, where you've been?

      I've used GAIA for the trail riding I've done and its worked pretty good.  Is it perfect? No but I am running it on my iPhone (which you can also run it on any Android or iOS device with GPS) and so I don't need to have multiple charge ports (1 for a GPS unit, 1 for my phone)..  just keep it charged and hundreds of possible mounts for a phone versus a certain GPS unit.

      NOW the negatives, obviously an iPhone is more expensive (in many cases) than a GPS unit.  The function of the GPS unit is just for keeping you informed of where you are so more than likely it has more satellite antennas.  I've been one of those that thought for years, why would I waste money on a GPS unit when I can do all that on my phone.  Now I'm changing that tune to be more open about the idea.

      The community seems to all rave about vvmapping and a few others that require you have a Garmin unit if you want turn by turn instructions on the trails which could come in handy.

      If I decide to get a GPS unit it will be a Garmin and it has to be able to be portable (in case you break down, you could use the GPS unit to find your way to civilization and hopefully mark your spot that your down and broke so you can find your way back).

      vvmapping only supports the following GPS models

      • Dakota, Colorado, Montana, Monterra & Oregon (all model numbers for these)
      • DEZL (all model numbers for these)
      • DRIVE (including DriveSmart, DriveAssist, DriveLuxe, DriveTrack) (all model numbers for these)
      • eTrex: 20, 30, Legend C/CX/HCX, Vista C/CX/HCX, Venture HC; Touch; (must be color unit)
      • GPSMap 60, 62, 64, 66, 76, 78, 620, 640 (all in each model series, must be color unit)
      • GPSMap 276C, 376C, 378, 478 (these take special Garmin data cards, not the card we provide)
      • GPSMap 276CX
      • Nuvi & Nuvi Track (all model numbers for these)
      • Overlander
      • Rino 530 HCX and 6xx/7xx
      • RV (all model numbers for these)
      • Zumo (all model numbers for these)

      From my understanding the Garmin Nuvi models are not waterproof, so something to consider.  I've been leaning on a Garmin Montana but not sure yet.


    3. Reason #1 that you should not tow with your short wheelbase Jeep

      Below is another great complilation of trailer wrecks.


    4. Brand Name

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      • 809

      Recent Entries

      Latest Entry

      By wildweaselmi,

      I found this information pretty interesting and wanted to share with everyone else.

      A break down of the import/export business for vehicles is shown here


      The OICA counts over 50 countries which assemble, manufacture or disseminate automobiles. Of that number, only 14 countries (list below) currently possess the capability to design original production automobiles from the ground up.

      • Australia
      • China
      • France
      • Germany
      • India
      • Iran
      • Italy
      • Japan
      • Malaysia
      • Russia
      • South Korea
      • Sweden

      Below are the top 20 motor vehicle producing countries (as of 2018).  I was very surprised to see how much more China is than everyone else.


      Best-selling brands produced in China

      According to China Association of Automobile Manufacturers (C.A.A.M), automakers in China delivered 28,226,616 passenger and light commercial vehicles in 2017. Volkswagen remained the best-selling brand followed by Honda. In 2017, Geely surprised everyone by rocketing to become the third best-selling brand in China and the top Chinese brand in the market. Korean and American brands suffered from lackluster sales with Hyundai dropping from the top ten and GM and Ford both falling below local Chinese brands. Below is a breakdown of the deliveries by brand.

      The best selling specific model in 2017 was the Wuling Hong Guang minivan made in partnership with SAIC-GM, formerly known as Shanghai General Motors Company Ltd. In fact, five of the top-15 models were produced by SAIC-GM. Volkswagen had three models in the top-15, including the number-two Lavida while Geely, Great Wall, and Guangzhou Automotive Corp (GAC) models accounted for several models on that list. Number three of the top-15 belonged to the Nissan Bluebird Sylphy/Sylphy, number four to the Haval H6 and number five to the VW New Santana.


      2017 Top 10 Brands by Passenger Car Sales[66]
      Rank Brand Manufacturer(s) Sales in 2017
      1 Volkswagen FAW, SAIC 3,135,236
      2 Honda GAC, Dongfeng 1,405,021
      3 Geely Auto Geely 1,248,004
      4 Buick SAIC GM 1,223,429
      5 Toyota FAW, GAC 1,131,616
      6 Nissan Dongfeng 1,116,709
      7 Chang'an Chang'an 1,062,716
      8 Baojun SAIC-GM-Wuling 1,016,224
      9 Haval Great Wall 851,855
      10 Ford Chang'an 840,946

      FAW Group Corporation ("First Automobile Works") is a Chinese state-owned automotive manufacturing company headquartered in Changchun, Jilin, China. FAW is one of the "Big Four" Chinese automakers alongside Changan Automobile, Dongfeng Motor Corporation, and SAIC Motor.

      SAIC sells vehicles under a variety of brands. Brand names that are exclusive to SAIC include Maxus, MG, Roewe, and Yuejin. Products produced by SAIC joint venture companies are sold under marques including Baojun, Buick, Chevrolet, Iveco, Škoda, Volkswagen, and Wuling.


      By manufacturer

      This is a list of the 15 largest manufacturers by production volume in 2017, according to OICA.

      Rank Group Country Vehicles
      1 Toyota Japan 10,466,051
      2 Volkswagen Group Germany 10,382,334
      3 Hyundai South Korea 7,218,391
      4 General Motors United States 6,856,880
      5 Ford United States 6,386,818
      6 Nissan Japan 5,769,277
      7 Honda Japan 5,236,842
      8 Fiat Chrysler Automobiles Italy / United States 4,600,847
      9 Renault France 4,153,589
      10 PSA France 3,649,742
      11 Suzuki Japan 3,302,336
      12 SAIC China 2,866,913
      13 Daimler Germany 2,549,142
      14 BMW Germany 2,505,741
      15 Geely China 1,950,382

      The table below shows the world's 10 largest motor vehicle manufacturing groups, along with the brands produced by each one. The table is ranked by 2016 production figures from the International Organization of Motor Vehicle Manufacturers (OICA) for the parent group, and then alphabetically by brand. Joint ventures are not reflected in this table. Production figures of joint ventures are typically included in OICA rankings, which can become a source of controversy.[48][49]

      Marque Country of origin Ownership Markets
      1. Toyota (Japan)
      Daihatsu Japan Subsidiary Japan, Indonesia, Malaysia
      Hino Japan Subsidiary Southeast Asia, Japan, Americas
      Lexus Japan Business unit Southeast Asia, China, Japan, South Korea, Middle East, United States, Canada, Mexico (2021)[50], Europe, Brazil, Costa Rica, Panama, Chile, Peru, Bolivia, Australia, New Zealand, South Africa, India
      Toyota Japan Division Global (except Iran)
      2. Volkswagen AG (Germany)
      Audi Germany Subsidiary Global (except Iran)
      Bentley United Kingdom Subsidiary Global
      Bugatti France Subsidiary Global
      Ducati Italy Subsidiary Global
      Lamborghini Italy Subsidiary Global
      MAN Germany Subsidiary Global (except North America)
      Porsche Germany Subsidiary Global (except Iran, North Korea, Syria, Cuba)
      Scania Sweden Subsidiary Global (except North America)
      SEAT Spain Subsidiary Europe, China, Singapore, Mexico, Central America, South America (except Chile), Middle East, Northern Africa, New Zealand
      Škoda Czech Republic Subsidiary Europe, Asia (except Indonesia, Malaysia, Thailand, The Philippines, Iran, Japan, South Korea, North Korea), Central America, South America, Dominican Republic, Northern Africa, Western Africa, Australia, New Zealand
      Volkswagen Germany Division Global
      Volkswagen Commercial Vehicles Germany Subsidiary Global
      VTB Brazil Business unit Brazil, Mexico, Nigeria, South Africa
      3. Hyundai (South Korea)
      Genesis South Korea Business unit South Korea, Australia, Russia, United States, Canada, Bahrain, Kuwait, Oman, Qatar, Saudi Arabia, United Arab Emirates
      Hyundai South Korea Division Global
      Kia South Korea Subsidiary Global
      4. General Motors (United States)
      Buick United States Business unit North America, China, Israel
      Cadillac United States Business unit North America, Middle East, China, Europe, Japan, South Korea
      Chevrolet United States Business unit Global (except Europe, Australia, New Zealand, India)
      GMC United States Business unit North America, Middle East (except Israel)
      Holden Australia Subsidiary Australia, New Zealand
      Jiefang China Business unit China
      SAIC-GM China Business unit China


      (Baojun, Wuling)

      China Business unit China, Indonesia
      GM Uzbekistan Uzbekistan Business unit Central Asia, Russia
      5. Ford (United States)
      Ford United States Division Global
      Lincoln United States Business unit North America, Middle East, Japan, South Korea, China
      Troller Veículos Especiais Brazil Subsidiary South America, Africa, Australia, Europe
      6. Nissan (Japan)
      Datsun Japan Division Indonesia, India, Russia, South Africa, Bolivia
      Infiniti Japan Subsidiary Global (except South America (excluding Chile), Japan, Indonesia, Africa (excluding South Africa))
      Nissan Japan Division Global
      7. Honda (Japan)
      Acura Japan Division China, Kuwait, North America, Russia
      Honda Japan Division Global
      8. Fiat Chrysler Automobiles (Italy)/(USA)
      Abarth Italy Subsidiary Global (except Iran)
      Alfa Romeo Italy Subsidiary Global (except Iran, Taiwan, the Philippines and Brazil)
      Chrysler United States Division Global (except Europe (excluding United Kingdom, Ireland), Africa (excluding South Africa, Egypt), South Asia, Southeast Asia (excluding Indonesia, the Philippines, Singapore))
      Dodge United States Division Global (except Europe, Africa (excluding South Africa, Egypt), South Asia, Southeast Asia (excluding Indonesia, the Philippines))
      Fiat Italy Subsidiary Global (except Africa (excluding South Africa), Iran, Southeast Asia)
      Fiat Professional Italy /United States Business unit Global (except Africa (excluding South Africa), Iran, Southeast Asia, United States, Canada)
      Jeep United States Division Global (except Africa (excluding South Africa, Egypt), South Asia (excluding Sri Lanka), Southeast Asia (excluding Malaysia, Indonesia, the Philippines, Singapore))
      Lancia Italy Division Europe (except United Kingdom, Ireland)
      Maserati Italy Subsidiary Global
      RAM United States Division North America, Brazil, Middle East, Peru, Australia
      9. Renault (France)
      Alpine France Subsidiary Europe, Japan and Australia
      Dacia Romania Subsidiary Europe, North Africa
      Lada Russia Business unit Russia, Belarus, Ukraine, Armenia, Azerbaijan, Czech Republic, Slovakia, Austria, France, Germany, Hungary, Egypt
      Renault France Division Global (except USA, Canada, Pakistan, The Philippines)
      Renault Samsung Motors South Korea Subsidiary South Korea
      10. Groupe PSA (France)
      Citroën France Division Europe, Central and South America, Northern and Western Africa, South Africa, Madagascar, Australia, New Zealand, Asia (except USA, Canada, India, Pakistan, Bangladesh, Thailand, Indonesia)
      DS France Division Europe and China
      Peugeot France Division Global (except USA, Canada, India, Pakistan)
      Opel Germany Subsidiary Europe (except United Kingdom), North Africa, South Africa, Middle East, Singapore, Mongolia, Chile
      Vauxhall United Kingdom Subsidiary United Kingdom
      • General Motors India stopped producing vehicles for the Indian market in 2017. It however continues to export vehicles to other markets.


    5. The one

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      • 1035

      Recent Entries

      VIN: 1GTHK23D67F110033

      Options and Standard Features


      • Engine: Duramax Turbo Diesel 6.6L V8
      • Heavy-Duty Power Package
      • Heavy-Duty Rear Automatic Locking Differential
      • Heavy-Duty Trailering Equipment
      • Manual Dual-Zone Air Conditioning
      • Power Tilt-Sliding Sunroof W/Express-Open
      • Rear Seat Entertainment System
      • Transmission: Allison 1000 6-Speed Automatic

      Basic Information

      • Stock Number: 2319
      • VIN Number: 1GTHK23D67F110033
      • Style Name: 4X4 Crew Cab 6.6 Ft. Box 153 In. WB SLT
      • Make: GMC
      • Model: Sierra 2500HD Classic
      • Model Year: 2007
      • Type: Pickup
      • Vehicle Trim: SLT
      • Interior Color: Dark Pewter
      • Exterior Color: Onyx Black
      • Body Type: Crew Cab


      • Engine Description: 6.6L V8 32V
      • Fuel Type: Diesel
      • Fuel Induction: Direct Diesel Injection
      • Valves Per Cylinder: 4
      • Aspiration: Turbocharged


      • 4WD Type: Part-Time
      • Driven Wheels: Four-Wheel
      • Locking Hubs: Auto
      • Transfer Case: Manual
      • Transmission: 6-Speed Automatic
      • Wheels Rims: Polished Forged Aluminum
      • Wheels Spare Rim Type: Steel
      • Drive Train Type: 4WD


      • Independent Suspension: Front
      • Stabilizer Bar: Front


      • Clock
      • Compass
      • External Temp
      • Low Fuel Level
      • Tachometer
      • Trip Computer

      Roof and Glass

      • Front Wipers: Variable Intermittent
      • Privacy Glass: Deep
      • Rear Defogger

      In Car Entertainment

      • Antenna Type: Fixed
      • Audio System: AM/FM/Satellite-Prep
      • Premium Speakers: Bose
      • Rear Audio: Multi-Source
      • Speakers: 6


      • Drivers: Multi-Level Heating
      • Drivers Height: Power
      • Drivers Lumbar: Power 2-Way
      • Drivers Power: 8
      • Passenger: Multi-Level Heating
      • Passenger Height: Power
      • Passenger Lumbar: Power 2-Way
      • Passenger Power: 8
      • Seating Capacity: 5
      • Front Seat Type: Bucket
      • Upholstery: Leather
      • Center Armrest
      • Folding: Flip Forward Cushion/Seatback


      • Center Console: Full With Covered Storage
      • Cruise Control
      • Cupholders: Front And Rear
      • Door Pockets: Driver And Passenger
      • Overhead Console: Mini With Storage
      • Power Outlets: 4
      • Seatback Storage: 2
      • Steering Adjustment: Tilt-Adjustable
      • Steering Power: Power Steering
      • Auto Dimming Mirrors: Electrochromatic, Driver Only
      • Power Mirrors: Power Remote W/Tilt Down
      • Power Retractable Mirrors
      • Reverse Tilt Mirror: Dual Mirrors
      • Power Door Locks
      • Windows: Power Windows
      • Memory Features Exterior Mirrors
      • Memory Features Number Of Drivers: 2


      • Air Conditioning: Automatic
      • Mats: Vinyl/Rubber Front And Rear
      • Reading Lights: Front
      • Shift Knob: Urethane
      • Steering Wheel Trim: Leather
      • Vanity Mirrors: Passenger Vanity Mirrors


      • Bumpers: Chrome
      • Door Reinforcement: Side-Impact Door Beam
      • Engine Hour Meter


      • Turning Circle: 53.6
      • ABS: 4-Wheel
      • Anti Theft System
      • Safety Locks: Manual
      • Daytime Running Light
      • Engine Immobilizer
      • Headlights Auto Delay: Auto Delay Off
      • Headlights Dusksensor: Dusk Sensing
      • Front Headrests: Manual Adjustable
      • Rear Headrests: 2
      • Rear Center Seatbelt: 3-Point Belt
      • Safety Signal Mirrors: Turn Signal In Mirrors
      • Driver And Passenger Airbag
      • Door Reinforcement: Side-Impact Door Beam


      • Rear Door Type: Tailgate
      • Side Door Type: Conventional


      • Front Head Room: 41.0 Inches
      • Front Hip Room: 61.4 Inches
      • Front Shoulder Room: 65.2 Inches
      • Front Leg Room: 41.3 Inches
      • Rear Head Room: 39.0 Inches
      • Rear Hip Room: 62.9 Inches
      • Rear Leg Room: 39.1 Inches
      • Rear Shoulder Room: 65.1 Inches
      • Length: 239.7 Inches
      • Width: 79.7 Inches
      • Height: 77.0 Inches
      • Wheelbase: 153.0 Inches
      • Ground Clearance: 10.6 Inches
      • Max Gross Vehicle Weight: 9,200 Lbs.
      • Curb Weight: 5,883 Lbs.

      When the LBZ was introduced to replace the LB7, the LB7’s injector issues had long been solved and the overheating issues associated with the LLY were a thing of the past. This engine’s beefier block casting, stronger connecting rods, higher pressure common-rail fuel system and updated ECM arguably made it the most powerful, drivable, reliable and tunable Duramax to date. Right out of the box, the LBZ produced 360hp and 650 lb-ft of torque. During this time frame (’06-‘07), these numbers not only outperformed the 6.0L Power Stroke’s 325hp and 570 lb-ft, but they beat out the 325hp and 610 lb-ft figures put up by the 5.9L Cummins as well. The LBZ was also the first Duramax to be coupled to the six-speed Allison 1000 automatic, which proved capable of handling more power than the five-speed version that preceded it.

      Diesel enthusiasts longingly remember the LBZ as the last Duramax built before the modern day emissions crunch kicked in, which spawned pollution control technology that reduced fuel economy and greatly hampered long-term engine durability.  Arguably the most highly sought after Duramax ever built is the LBZ Duramax.

      • More meat exists in the lower section (big end) of the rod than what you’ll find on LB7
      • The beefier I-beam style rods bring more mass to the rotating assembly
      • Connecting rods were the strongest found in any Duramax up to that time
      • GM cast slightly more webbing into the main bearing regions of the LBZ’s gray-iron block for added horsepower and torque

      Unfortunately nothing is perfect and in this case the LBZ pistons weren’t up to the task of surviving in higher horsepower applications.  The cast-aluminum pistons are highly susceptible to cracking.  The LBZ piston’s use of wrist pin bushings is also believed by many to be a contributing factor in OEM piston failure, along with a thinner wrist pin being utilized.


      When a piston lets go, you definitely know it, as it’s accompanied by a nasty miss, excessive blow-by and smoke out the exhaust.


      CARFAX Vehicle History Report for this 2007 GMC SIERRA K2500 HD_ 1GTHK23D67F110033.pdf



      Replace engine oil & oil filter

      10,000 miles or when "change engine oil" message is displayed by the oil life monitoring system

      Replace fuel filter

      2001 - 2010

      15,000 miles

      2011 - 2016

      22,500 miles or when "change fuel filter" message is displayed

      Replace engine air filter

      Check filter condition every oil change and replace as necessary; replace at 45,000 miles regardless

      Flush engine cooling system

      150,000 miles

      Replace automatic transmission fluid & filters

      2001 - 2011

      50,000 miles (normal conditions)
      25,000 miles (severe duty conditions)

      2012 - 2016

      Replace external filter at 45,000 mile intervals and full service at 97,500 miles under normal conditions
      Perform full service (new fluid, ext & int filter) every 45,000 miles under severe duty conditions

      Replace manual transmission fluid

      GM advises that the ZF S6-650 6 speed manual transmission does not require service. To maintain shift quality and promote transmission life, consider replacing fluid at 60,000 mile intervals, especially if usage meets any of the severe duty conditions.

      Replace transfer case fluid

      2001 - 2011

      50,000 miles

      2012 - 2016

      97,500 miles (normal conditions)
      22,500 miles (severe duty conditions)

      Replace front differential fluid (4x4)

      Service interval not provided by GM, routine service may promote longevity. Fluid level should be checked periodically. Drain and replace differential fluid immediately if the axle is submerged in water.

      Replace rear differential fluid

      Service interval not provided by GM, routine service may promote longevity. Fluid level should be checked periodically. Drain and replace differential fluid immediately if the axle is submerged in water.


      Part numbers based on Silverado/Sierra trucks - some parts may not be compatible with Sierra/Express vans

      Engine air filter

      2001 - 2005

      ACDelco A1618C

      2006 - 2010

      ACDelco A3087C

      2011 - 2016

      ACDelco A3141C

      Engine oil filter

      ACDelco PF2232

      Oil pan drain plug

      GM 11569943

      Fuel filter

      ACDelco TP3018

      Fuel pump

      2001 - 2014 (inline pump)

      ACDelco EP1037, Delphi HFP955

      2015 - 2016
      (153.7", 144.2" wheelbase, in tank)

      ACDelco MU1977 (GM 19257327)

      2015 - 2016
      (133.6", 158.1" wheelbase, in tank)

      ACDelco MU1976 (GM 19257326)

      Serpentine belt

      2001 (105 amp alt)

      ACDelco 6K1114, Gates K061114

      2001 (130 amp alt)

      ACDelco 6K1123, Gates K061123

      2002 - 2016 (single alt)

      ACDelco 6K1195, Gates K061195

      Glow plug[1]

      2001 - 2004 LBZ
      (VIN 1 only, NOT 2004 LLY)

      ACDelco 62G

      2004 - 2005 LLY
      (VIN 2 only, NOT 2006 LLY)

      ACDelco 63G

      2006 - 2016
      (all engines)

      ACDelco 9G (replaces ACDelco 61G)


      2001 - 2014

      ACDelco 12T100D (front), ACDelco 12T99D (rear, alternative p/n 131131)

      2015 - 2016

      ACDelco 131-131

      Thermostat housing gasket

      ACDelco 97223686

      Coolant reservoir cap

      2001 - 2010

      ACDelco RC85

      2011 - 2016

      ACDelco RC115

      Upper radiator hose

      2001 - 2005

      ACDelco 24485L, Gates 22698

      2006 - 2008

      ACDelco 24589L, Gates 23227

      2009 - 2010

      ACDelco 24655L, Gates 23499

      2011 - 2014

      ACDelco 27035X, Gates 23721

      2015 -2016

      GM 22884211, Dayco 72554

      Lower radiator hose

      2001 - 2005

      ACDelco 26397X, Gates 22650

      2006 - 2010

      ACDelco 26570X, Gates 23260

      2011 - 2014

      ACDelco 27099X, Gates 23962

      Camshaft position sensor (CPS)

      2001 - 2004
      (LBZ, VIN 1)

      GM 2134274 (alternative 2132485)

      2004.5 - 2015
      (2004 LLY only, VIN 2)

      GM 97365038


      GM 1267264

      Crankshaft position sensor (CKP)

      2001 - 2004
      (LBZ, VIN 1)

      GM 2134277 (alternative 2132486)

      2004.5 - 2015
      (2004 LLY only, VIN 2)

      GM 9765037


      GM 12672641

      Automatic transmission filter

      External filter, 2001 - 2016

      ACDelco TF950, Allison 29539579

      Internal filter, 2001 - 2005

      GM 29537965

      Internal filter, 2006 - 2010

      ACDelco TF920

      Internal filter, 2011 - 2016

      GM 29542833

      Transmission pan gasket

      ACDelco 29549684

      [1]Model years with engine crossovers should have engine model verified by VIN number before ordering glow plugs. Glow plugs are not interchangeable with all model years. See: Duramax engine models by VIN number
      [2] 2001 to 2014 model year engines use a dual thermostat system, 1 front and 1 rear mounted thermostat.


      Note - fluid capacities are nominal; always fill to proper level as indicated by dipstick, to the bottom of the fill plug, etc. The fluid capacities listed herein are measured in U.S. quarts ("qts") and/or pints ("pts"), NOT Imperial units. Always verify fluid specifications and capacities in your owners manual, if applicable.

      Engine oil


      Preferred viscosity, ambient temp > 0° F

      10 qts w/ filter change


      Preferred viscosity, ambient temp < 0° F, acceptable in all temps


      Listed as acceptable for certain model years - not advised

      Engine coolant

      50/50 DEX-COOL 12346290 engine coolant , distilled water

      22.0 - 31.4 quarts (5.5 - 7.85 gallons)
      Refer to owners manual for application specific coolant capacity

      Automatic transmission fluid

      2001 - 2005 (5 spd)

      DEXRON III automatic transmission fluid (replaced by ACDelco 10-9243)

      7.4 qts service refill
      12.7 qts total capacity

      2006 - 2016 (6 spd)

      DEXRON VI automatic transmission fluid (ACDelco 10-9243)

      Manual transmission fluid

      ZF S6-650 (6 spd)

      GM TranSynd full synthetic transmission fluid (GM 12378515)

      5.8 qts

      Transfer case fluid

      2001-2007 manual shift

      DEXRON III automatic transmission fluid (replaced by ACDelco 10-9243)

      2.0 qts

      2001 - 2007 auto shift

      AUTO-TRAK II (GM 12378508)

      2.0 qts

      2008 - 2016

      DEXRON VI automatic transmission fluid (ACDelco 10-9243)

      1.6 qts

      Front differential fluid

      2001 - 2010

      SAE 80W-90 synthetic gear oil

      1.8 qts

      2011 - 2016

      SAE 75W-90 synthetic gear oil

      1.8 qts

      Rear differential fluid

      SAE 75W-90 synthetic gear oil

      3.2 - 4.3 qts (varies by MY)

      DEF tank capacity

      5.3 gallons


    6. Expedition Overland has been everywhere but in this series they are concentrating on our own United States soil.


    7. These are some tats that I like and I made up for my dad. So please enjoy them and comment which one you like. :grin:9CB1E65E-F09B-4A8F-8495-383546B49A48.thumb.jpeg.cc6c70e3833791ec1f1cf3d25365be65.jpeg



    8. My wife and I are freezing our asses off in our own home unless I crank the furnace up to 68 degrees which is crazy to think.  I remember as a kid we were never cold in the house but we always had a wood burner in the home (most of the homes it was in the basement).  It would get some warm in the house that windows had to be opened in the home in the middle of winter to let out some of the hot and let in some of the cool weather.

      So now I'm a grown up and freezing my ass off in this home that was built in the 60's I thought of applying the same thought process that worked when I was a kid.  Get a wood burner in the basement.


      I originally wanted to replace the wood stove upstairs that came with the home since it doesn't put out a lot (or really any) heat.  Especially since we spend most of our time in the living room upstairs but when they came out to look at what we have they pointed out that we should stop using it Immediately.


      Apparently whoever put the wood insert in trimmed the outside of it with wood trim which is charred on the back from burning from the heat of the wood stove.  So in short, its about to start on fire like charcoal.  To correct the hearth that is too short, all the wood trim, wood mantle, etc I'm looking close to $10,000 so probably not going to happen.  My thought was to pull it out and put a gas stove/insert in its place so I don't have to do as much work.  The company I talked to said they could pull the stove out for $400 but some serious cost to fix everything.  That will have to be maybe next year.

      Since upstairs is a bust, concentrating on the downstairs which uses the same chimney so its directly below the living room. 


      My thought is it would at least warm the wood floors in the winter and give the impression its warmer.  And we do know that warm air rises so there is a good chance it could heat most of the 1800 sq ft 1960 home on half basement and half crawl (the crawl space is below all the bedrooms)

      I was bouncing back and forth between a Lopi and a Blaze King for manufacturers of wood stove.  My parents has a Lopi wood stove and it was there favorite of all the brands they had but that was a long time ago before they started getting strict with emissions.

      Researching burn times and warranty information the Blaze King on paper is the clear winner so I chose a Blaze King Princess Insert which will get installed on the 23rd of January 2018 (brochure is attached along with manual)




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      Recent Entries

      Latest Entry

      By wildweaselmi,

      So what the heck is Gear Crushers all about?  In short, we have so many passions that we couldn't pick just one.  We love all of it!  Too many websites and clubs are focused on one passion but we like everything.  We believe we can love more than just one passion.  

      How many times have you gone to a website and invested time in adding and contributing to the community to have them change or just call it quits.  Or you belong to a website that never gets updated.. yawn.  We are tired of being involved with communities / websites that the admins just don't keep up to date with patches or no involvement because the community has given up on them.

      We at Gear Crushers love everything and that isn't a passion that just goes away.  I don't want to have to join multiple different clubs because I enjoy different toys. Most everything is similar (engine, trans, suspension, etc). I enjoy not just offroad but street racing, boats, rv's, ATV's, Motocross, Motorcycles, etc..  This site "Gear Crushers" is exactly that.  We want to give a home for everyone.  They all have similarities that could benefit you or could benefit someone else.  Engines, Transmissions, Axles, etc..  but feel free to create your own club to advertise your site (events for your community).  People may be browsing Gear Crusher Clubs by location and could find that you are in their area.

      Also I think we have a kick ass logo that could be used by Bike, Car, Truck, Offroad, Boat communites..

      Let's focus on all that is cool and crush them gears.

      This site is dedicated to anyone who enjoys the sound of an engine, the smell of fuel burning, the adrenaline of tackling challenges while crushing those gears.

      We are not biased towards one type of vehicle, make or model. We can appreciate the passion no matter what you are working on, driving, admiring, polishing, designing.

      Gear Crushers are for those of us that want to break the mold and have one site that has something for everyone since many of our passions can easily cross. An engine or trans or axle or tires etc may work on something else in a completely different group.  Troubleshooting could also be similar.

      I don’t find it fair that we have to choose “exactly” what we have to be on different websites or groups even though our passion may stretch amongst multiple types of vehicles so here you go. Gear Crushers covers anything that runs fuel.  Community driven. Cool logo. Non-biased fun.

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