CJ-3B Specifications
and Technical Information Sources

Universal Jeep Model CJ-3B

• G.V.W. 3500 lbs. (1587.5 kg)
• Curb weight: 2243 lbs (1017.4 kg) (2418 lbs. on M606).
• Overall length: 129-29/32 in. (3.30 m)
• Overall width: 68-7/8 in. (175 cm)
• Overall height (top of windshield): 66-1/4 in. (169 cm.)
• Tread front and rear: 48-7/16 in. (123 cm)
• Wheelbase: 80 in. (203 cm.)
• Front / Rear Overhang: 20.59 in. / 22.31 in.
• Tailgate: 36 in. Wide x 19.25 in. High
• Ground Clearance: 8 in. (20.3 cm)
• Load Space: 32 in. x 52.315 in. x 14.125 in.

See CJ-3B Drawings for more dimensions.

• Engine: "Hurricane" F-head, 134 cu.in. (2.2 liter), 4 cylinders
• Cooling system capacity 11 qt. (10.4 ltr.) (12 qt. with heater)
• Electricity: Battery 50 Amp. Hour 12 volt, Generator 35 Amp.
• Front axle: Dana/Spicer 25, 27 or 27A, Full-floating hypoid, Ratio: 4.27:1 (5.38:1 optional)
• Rear axle: Dana/Spicer 44, Semi-floating hypoid, Ratio: 4.27:1 (5.38:1 optional)
• Brakes: Hydraulic, 9 in. drum diameter x 1.75 in., 117.8 sq. in. braking area.
• Clutch: 8.5 in. Auborn or Rockford single dry plate with torsional damping, 72 sq. in. area. (Optional Auborn single dry plate, 9.25 in. dia. )
• Transfer case: Spicer 18, 2 speeds, 1.00:1 and 2.46:1 (26 tooth input gear and 1-1/8 in. intermediate shaft up to serial number 54-12506; 29 tooth input gear and 1-1/4 in. intermediate shaft after serial number 54-12506)
• Transmission: Warner T-90 3-speed syncromesh, Ratios: 1st-3.339:1 (or 2.798:1), 2nd-1.551:1, 3rd- 1.00:1, Reverse-3.798:1

The plate found on the passenger side of the dashboard lists maximum speeds for all gears. See an approximately full size copy, 2-1/4" x 10-3/8" (48K GIF).

• Frame: Heavy steel channel sides, 4.125 in. depth x 1.937 in. width, with 6 cross members (possibly five on early models). Length 122.656 in.
• Fuel tank 10-1/2 gallons (38.75 ltr.)
• Shock absorbers: Telescopic hydraulic. Monroe, 10.75 in. dia. double acting.
• Springs: Semi-elliptical leaf type. Front: 36 1/4 in. x 1 3/4 in., 10 leaves, Rate 260 lb./in. Rear: 42 in. x 1 3/4 in., 9 leaves, Rate 190 lb./in. (Optional 11-leaf Heavy-Duty, Spring Rate: 225 lb./in.), (10 leaves, Rate 400 lb./in. on some M606 models).
• Steering: Cam and lever, overall ratio 17.9 to 1 (Ross Model T-12 with 14-12:1 ratio on early models)
• Tires: 6.00x16: 4 ply (7.00x15 optional, also 7.00x16 on military M6060 version)
• Wheels: Kelsey-Hayes 4.50x16 inch, 5 stud

Instrumentation: Ammeter, Heat Indicator Gauge, Speedometer, Oil Pressure Gauge, Fuel Level Gauge. The small speedometer (similar to the CJ-2A and CJ-3A) used in early models was manufactured by King-Seeley, part number 640131 in the CJ-3B Parts List (second edition) dated November 1956. An Auto-Lite unit was used in Jeeps that registered in kilometers. Starting with serial number 57348-34452 a new larger speedometer/instrument cluster was used. It was either a King-Seeley p/n 911618 or Stewart-Warner p/n 913373. The latter S-W speedo is the same unit that is in the FC-150 and CJ-5.

Technical Information Sources

The above information comes from the Haynes manual (Jeep CJ: 1949 thru 1986), the Chilton manual (Jeep: 1945 to 1987), and the Kaiser Jeep Universal Service Manual (1965).

See the CJ3B Bookshelf for other useful books. A reproduction of the Jeep Universal Service Manual is available for sale at many Jeep parts dealers.

The WillysTech Mailing List and the Classic Willys Mailing List at yahoo.com, are other sources of answers to technical or historical questions.

See also other pages of Specs and Tech Tips on The CJ3B Page.

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