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Old November 9th, 2005, 10:02 PM   #1
cornfed
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SWB Jeep Spotters Guide part 1 of 3

Here's some info obtained from www.4wd.com. Let's update this post with a GL4x4 member's rig pic for the model example.

1941-1945 MB


Willys was among three companies bidding for the military’s purposed Light Reconnaissance Car for World War II. American Bantam, Ford Motor Company and Willys-Overland built prototypes beginning in 1940. Willy’s won the contract with its prototype MA model which was later revised into the MB. Ford was used a secondary supplier, their model was called the GPW, but by military order the MB and GPW had to be nearly identical with interchangeable parts. These military reconnaissance cars were referred to as GPs, which evolved into the word Jeeps.

MB would seat 4 people; a toolbox and storage compartment were also found inside the body along with spare parts and tool packages. Other items like shovel and ax were mounted outside the vehicle’s body. A canvas top and bow assembly could be raised or lowered depending on weather. The windshield had a 2-piece glass panel with manually operated windshield wipers. Willy’s produced some 300,000 MBs, combine Ford’s GPW and Bantams early production run, that figure reaches well over 600,000.

The 134 cubic inch 4 cylinder L head “Go Devil” engine produced 60 horsepower @ 4000 rpm and 105 ft. lb. of torque @ 2000 rpm. T84 3-speed transmission was used with a Dana model 18 transfer case. Equipped with Dana Model 25 front and rear axles.

Useful measurements:
80” wheelbase
132-3/4” overall length (with spare tire) and 62” wide
23” windshield height
6” hood height


1945-1949 CJ2A



Jeep's image following World War II was one of a hero. After the war Willys marketed the flat fender Jeep as a "Universal" do anything machine for use on the farm, construction and recreational use. Upgrades were made to the CJ2A compared to it's predecessor, the MB, such as a folding tailgate, improved transmission and exterior color options gray, tan, blue and brown. The CJ2A's split windshield frame had top mounted vacuum-powered driver side windshield wiper and a manual passenger side wiper. Options included farm implements and industrial tools, canvas top and a metal top. Over 200,000 CJ2As were produced. Base price in 1945 was $1241.

The 134 cubic inch 4 cylinder L head "Go Devil" engine produced 60 horsepower @ 4000 rpm and 105 ft. lb. of torque @ 2000 rpm. T84 3-speed transmission was used early on and then upgraded to the T90. Other drivetrain components included a Dana model 18 transfer case and Dana Model 25 front and Dana Model 41-2 rear axle.

Useful measurements:
80" wheelbase
130" overall length and 59" wide
25" windshield height
6" hood height

FlatFender's 1949-1953 CJ3A




Production from the CJ2A overlapped the introduction of the new CJ3A. The most visible difference between the two is the windshield, which had a one-piece glass and an air vent located beneath the glass. Dual windshield wipers were mounted at the bottom of the windshield frame. In 1951, Willys offered a chassis only version and a Farm Jeep with standard PTO (power-take-off). Over 300,000 CJ3As were produced. Base price in 1949 was $1270.

The 134 cubic inch 4 cylinder L head "Go Devil" engine produced 60 horsepower @ 4000 rpm and 105 ft. lb. torque @ 2000 rpm. T90 3 speed manual transmissions and Dana Model 18 transfer cases were used. Front axle was Dana Model 25 and rear axle was upgraded to Dana Model 44.

Useful measurements:
80" wheelbase
130" overall length and 69" wide
27" windshield height
6" hood height


1950-1951 M38


Willy's again produced a new Jeep for the US military in 1950 for the Korean War. Initially referred to as MC, it later became know as M38. The M38 very closely resembled the CJ3A. It had a one-piece windshield glass and the wipers were mounted on the bottom of the windshield frame. Headlamps had protective guards and driving lights were blackout military type. The frame and suspension were stronger than the CJ3A and it used a 24-volt electrical system. Other military requirements further separated it from the CJ3A. M38 production was brief, only 60,000 were produced.

The 134 cubic inch 4 cylinder L head "Go Devil" engine produced 60 horsepower @ 4000 rpm and 105 ft. lb. torque @ 2000 rpm. T90 3 speed manual transmissions and Dana Model 18 transfer cases were used. Front axle was Dana Model 25 and rear axle was upgraded to Dana Model 44.

Useful measurements:
80" wheelbase
130" overall length and 69" wide
27" windshield height
6" hood height


1952-1968 M38A1


The M38A1 (also referred to as MD) is significant in Jeep history because it was the basis for the CJ5. Rounded fenders and bodylines were first displayed on the M38A1 for the first time. A noticeable difference between the M38A1 and the CJ5 were the recessed headlamps on the M38A1. Another new feature of note was the F head 4 cylinder engine, which replaced the older L head. Standard military requirements such as 24 volt electric were present. The M38A1 featured more legroom and generally was more comfortable than earlier "flat fender" M38 and MB Jeeps. An ambulance version was produced, the M170, which essentially is the military version of the CJ6. M38A1 production continued into the 60s, later production was for export use only.

The M38A1 was the last true Jeep that would be produced for the military. Willys later shared a contract to build the Ford M151, but the M38A1 signified the end of Jeep's history with the military. Willys and Kaiser Corporation produced approximately 100,000 M38A1s.

New 134 cubic inch 4 cylinder F head "Hurricane" engine put out 72 hp @ 4000 rpm and torque of 114 ft. lb. @ 2000 rpm. A T90 3 speed transmission was mated to a Dana Model 18 transfer case. Front axle Dana Model 25 and rear axle was Dana Model 44.

Useful measurements:
81" wheelbase
135-1/2" overall length and 71-3/4" wide
59" windshield width (windshield was at 90° to hood)


1958-1963 CJ3B


CJ3A production continued into the 1953, along with the new CJ3B. The CJ3B is easily identified by its large hood and grill height. The use of a new, taller, F head 4 cylinder engine required additional engine compartment space. CJ3B also had a different windshield frame with a one-piece glass, but without the CJ3As air vent. The interior dash panel now used a single gauge cluster instead of individual gauges as found on earlier models. Farm models were carried over for a few years. The CJ3B was a more durable model and has been produced in several countries under license for years after Willys halted production. Approximately 150,000 CJ3Bs were produced by Willys and Kaiser Corporation. 1953 base price $1377.

New 134 cubic inch 4 cylinder F head "Hurricane" engine put out 72 hp @ 4000 rpm and torque of 114 ft. lb. @ 2000 rpm. A Perkins 4 cylinder Diesel was offered later in the 60s with hp ratings of 62 @ 3000 rpm and 143 ft. lb. of torque @ 1350 rpm. In 1966, the Buick "Dauntless 225 cubic inch V6 engine was offered as an option. It produced 160 hp @ 4200 rpm and 235 ft. lb. torque @ 2400 rpm. Transmissions used: T86, T90 3 speeds and T98A 4 speed coupled with Dana Model 18 transfer case. Front axle Dana Model 25 was later replaced by Dana Model 27; rear axle was Dana Model 44.

Useful measurements:
80" wheelbase
130" overall length and 69" wide
22-1/2" windshield height
10-1/2" hood height

Last edited by cornfed; November 10th, 2005 at 07:44 AM.
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Old November 10th, 2005, 01:21 AM   #2
FlatFender
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1949-1953 CJ3A



this is my 53'
Note the hump in the hood, we didnt have access to a flat head, so ours has an F-head in it. I recenty rebuilt a new tranny and T-case for it to be installed soon. We put the new moter in it this spring. oh, and it had TJ mirrors.

Last edited by FlatFender; November 10th, 2005 at 01:23 AM.
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