How do i tell if frame c10/c20
 

How do i tell if my 1969 truck frame is a c10 or c20. The vin says 1/2 ton but its got leaf springs in the back. Does that matter. Thanks
Posted via Mobile Device

Re: How do i tell if frame c10/c20
 

I don't know how you can tell the differences. but both c10 and c20's came with coil springs and I think leafs were optional.

Re: How do i tell if frame c10/c20
 

On chevy the leaf springs were optional and on GMC the trailering arms were optional.

Re: How do i tell if frame c10/c20
 

The rear cab mounts are located lower on the fame than 1/2t, on 2wd. C/10s are unique in that area

Re: How do i tell if frame c10/c20
 

yep, the rear cab cushion is about 3-4" tall on 3/4 2wd. The 1/2 2wd is about 1.25". I don't know anything about 4x4, never had.

Re: How do i tell if frame c10/c20
 

4x4 uses the same rear cushions as C/20-30.

Re: How do i tell if frame c10/c20
 

Also, I noticed the studs that hold the upper A-arms is 1/2" on the half ton while the 3/4 ton uses 9/16" studs.

Re: How do i tell if frame c10/c20
 

I believe there are extra braces on the cross members also.
Ben
:metal:

Re: How do i tell if frame c10/c20
 

The frames are also different thicknesses between 1/2, 3/4 and 1 tons.