CJ3A vs. CJ-2A
3A one-piece windshield with cowl vent, 2A two-piece windshield no vent.
3A wipers on windshield cowl, 2A on the top of the windshield.
3A bumper bolted directly to front frame horns. 2A used gussets between the front frame horns and the bumper.
Length of the top of the rear wheel well: 3A 32", 2A 35-5/8"
Distance between driver's seat and steering wheel: 3A 15.125", 2A 14"
Dana 41 rear axle - round cover ('48 - early '51)
Dana 44 rear axle - cover has straight sides (early '51 - '53)
Improved top setup (more head room). Overall vehicle height: 3A 66.375", 2A 64"
Improved carburetor: 3A Carter WO-636-S, 2A Carter WO-596-S
Improved fuel pump: 3A adds vacuum booster (for windshield wipers)
Improved camshaft: 3A gear driven, 2A chain driven
Improved front axle shaft design (chassis #37549 and up):
3A drive pinion spacer eliminated, 2A spacer
3A shaft outer end floats (not retained by nut and lockwasher), 2A nut and lockwasher
3A eliminated lower king pin bearing shims, 2A shims
Improved clutch: 3A 165 foot-pounds, 2A 144 foot-pounds
CJ3A Vin # for 1949 = 10001 - 37749
America could not have won World War II without the Jeep."General Dwight D. Eisenhower, 1946
“I have no ambition in this world but one, and that is to be a fireman" Chief Edward F. Croker FDNY (1899-1911)
Firefighting..The only profession where you can break into someones home, flood it, rip out the walls, bust out windows, cut holes in the roof, and they THANK YOU for your service