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Installing 23,000 Volt Offroad Lights

What are HID Lights?

Onboard Air
Converting a York
AC Compressor
to Pump Air

Warn 9500i Winch Installation
 

HEI Ignition
Installation & Review

Lockers, Limited Slips &
other Differentials Explained


Jeep Dana 300 TeraLow - 4:1 Gearset for the Dana 300 Transfer Case

Jeep Trans Swap
T-18A Transmission Rebuild & Short Shaft Conversion


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Offroad Reports


Jeeps at Rausch Creek
Off-Road Park


Wheeling in the Valley of the Ferns


Paragon Adventure Park
Rock Krawl

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Jeeps in Tellico NC

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Military Jeeps: MA, MB, and GPW

 

1940 Willys Quad Original Pilot

The Willys Quad was designed by Delmar G. Roos, Willys-Overland VP of Engineering.  In 1941 the US Army contracted with Willys-Overland to build 1,500 Quads.  Also contracted were 1,500 Pygmies by Ford, and 1,500 40 BRCs by Bantam.

Soon after, the Willys prototype vehicle won the contract and the Quad, later called the MA became the Army's standard.

 
 

1941 Willys MA

The Willys Quad became the MA.  About this time the word "Jeep" began to be used to describe Willys vehicles, and Jeep says there are a few ideas floating around about the origination of the term. One possibility is a slurring of the letters "GP," the military abbreviation for "General Purpose,"  Another theory was based on a character named "Eugene the Jeep" in the Popeye cartoon strip.

From late 1941 until mid 1945, Willys built MBs and Ford built GPWs based on the Willys design.   Willys produced the first 25,808 MBs used a "slat grill".  This grill was welded together rather than the stamped grill most people are familiar with. Very few "slat grill" MBs remain in existence.

The drivetrain of the MA, MB, and GPW used the "Go Devil" L-head 134 I4 engine, a T-84 3 Speed manual transmission, a Dana 18 two speed transfer case, the Dana 25 front axle, and the Dana 23-2 rear axle.

  

 

 

 

1942 Willys MB

For 1942, Willys redesigned the MA to create the next generation MB, reducing the vehicle's weight by about 400 pounds by removing items in order to come closer to meeting the Army's specifications.

  

MBWillys produced 335,531 units, and they served in every theater of war, in every conceivable role, and with every Allied army. They were also given modifications including longer wheelbases, skis, armor plating, railway wheels, and weapons mounts of various types. This vehicle changed the way Americans looked at the automobile and added a new word to our vocabulary: Jeep. Early versions had "Willys" embossed on the back panel, but the military frowned on the free advertising and ordered the practice stopped. MB's are plentiful, easily restored and a heck of a lot of fun. This superbly restored 1944 MB belongs to Tony Standefer of Bothell, Washington. (Tony Standefer).

  
By the end of World War II, Willys built 335,531 vehicles for the US Army. After the war Willys trademarked the name "Jeep" and set out to market their vehicles for civilian use, leter to become the CJ (Civilian Jeep).

 

 
 

GPWFord GPW

As Ford built the last of its GP units, it landed a contract to build jeeps to the Willys pattern. Ford designated these vehicles GPW (Government, 80-inch wheelbase, Willys). The front cross member is a U-channel instead of the Willys tubular unit. The letter F (Ford) is stamped on most small components, and the rear stowage compartment differs from the Willys. To war's end, 277,896 Ford GPWs were built, and they're equally as popular and cherished as the Willys. The vehicle shown belongs to John Ferrie of Fort Collins, Colorado and is an early '42 "Script" model, meaning it has "Ford" embossed on the rear panel. (Jim Allen)
 


1941 Ford GP

 


1941 MA - 1941-45 MB - M38 - 1963 M38A1

 

 
 


Extraction from the Catalog of Standard Ordnance Items, volume 1, 1st June 1945

 

 

 

 

 

 
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Ramp Travel Index
RTI / Ramp Travel Index What it is and how to calculate it, with and without the ramp. the ramp.


 

Offroad Tire Info
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All Terrain  Mud Terrain
Tire Reviews & Info
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Super Swamper Bogger
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Nokian Vatiiva MT
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Goodyear Wrangler MT/R
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Toyo Open Country AT
Toyo Open Country MT
TrXus Mud Terrain
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Michelin LTX A/T
Michelin LTX AT2 Press
Michelin LTX AT2
Mickey Thompson MTZ
Mickey Thompson MTX
Mickey Thompson Baja Claw Radial
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Mickey Thompson Baja Crusher
Mickey Thompson Baja ATZ Radial SLT
Competition Claw
Dunlop Mud Rover
Federal Couragia M/T
Nitto Dura Grappler
Yokohama Geolandar
  
Dick Cepek's 2008 F-250 Super Duty Project Vehicle Project CRUSHER
 
Mud Tire Reviews
 

Strange and Unusual Vehicles & 4x4s

Jeep V8 Swap Tips

Offroaders Guide to Gearing up for Offroad
From Basic Equipment to Well Equipped.  An extensive list guide to help you prepare your vehicle for the offroad.

The Jeep Timeline

Jeep road car timeline, 1945 to Present  -  Jeep, A subsidiary of DaimlerChrysler

Vehicle
Type
1940s 1950s 1960s 1970s 1980s 1990s 2000s
5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9
Traditional CJ-2A
1947-1949
CJ-3A
1949-1953
CJ-3B
1953-1968
            CJ-7
1976-1986
Wrangler YJ
1987-1996
  Wrangler TJ
1997-present
     
                                                                        CJ-8                                   LJ      
                    CJ-5 - 1955-1983                                             Wrangler JK
                    CJ-6 - (stretched CJ-5) - 1955-1981                                                   JK Unlimited
                    Jeep DJ Postal / Dispatch Jeep / Surrey Gala Package                                                  
                                                                        CJ-10                                                
Mid SUV       VJ
Jeepster
                              C101 C104                                                       Liberty KJ
Large SUV                                     Wagoneer / Cherokee SJ Grand Wagoneer   Gr. Cherokee ZJ Gr. Cherokee WJ Gr. Cherokee WK
                                                                              Cherokee XJ         Commander
Pickup                                     Gladiator Honcho
SJ
Comanche
MJ
                                 
                                    J-Series Pickups                                            
Truck                       Forward Control
FC-150, FC-170
                                                                                       
                                  FJ-3, FJ-3A Fleetvan                                                                    
Crossover                                                                                                                             Compass
                                                                                                                            Patriot
Other                           JEEP Concept Vehicles - Experimental, Prototype Concepts