Quote:
Originally Posted by bpmcgee
I just got my book out, and I was correct. 4wd (leaf spring) trucks had ladder-bar suspensions while 2wd (coil spring) trucks had x-frame.
B
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Differs by year though.
Torsion bar front/coil rear are early (1960-1962)
coil front/leaf rear are later (1963-1966)
4 wheel drive is another (3rd) frame type.
From the club page:
http://6066gmcguy.com/GMCvsChevy.html
GMC:
1960-62:
Torsion Bar Front, Most all Models
Coil Spring Trailing Arm Rear - 1000, 1500
Leaf Spring Rear - 2500 & Larger
1963-66:
Coil Spring Front, 1000, 1500 & 2500
I-Beam Front Axle - 3500 & Larger
Leaf Spring Rear - All Models
Some Larger Trucks had Air Ride Springs.
Chevrolet:
1960-62:
Torsion Bar Front, Most all Models
Coil Spring Trailing Arm Rear - 10, 20
Leaf Spring Rear - 30 & Larger
1963-66:
Coil Spring Front, 10, 20 & 30
Coil Spring Trailing Arm Rear - 10, 20
I-Beam Front Axle - 50 & Larger
Leaf Spring Rear - 30 & Larger