originally spring under or spring over?
 

you guys are extremely knowledgeable. my (truck new to me. driving it some every day) has the rear dif over the axle. was it changed to over or was it originally spring under?

Re: originally spring under or spring over?
 

Spring over.

HTH

Re: originally spring under or spring over?
 

And under on the front.

Brian

Re: originally spring under or spring over?
 

thanks guys. it looked all stock.

Re: originally spring under or spring over?
 

What model are we talking about here.

47/55.1 3100 had the rear axle above the spring the 3/4 ton had the rear axle under the spring.

55 second series through 59 pickups all had the rear spring above the rear axle.

All I beam axle trucks came with the springs on top of the front axle.

Re: originally spring under or spring over?
 

Yep, good catch there!


Brian

Re: originally spring under or spring over?
 

mine is a 51. Gmc

Re: originally spring under or spring over?
 

On the 51 GMC 6 lug is spring under the axle. 8 lug is spring over the axle.

GMC had both short 116 inch and long 125.5 inch wheelbase half tons where Chevy only had short wheelbase half tons. 1/2 ton springs are under the frame rails 3/4 ton springs are mounted on the sides of the frame rails.

Re: originally spring under or spring over?
 

I need to measure wheel base it does look long. 6 lug springs mounted under frame rails. axle over springs. looks short but that big bumper makes it look like a working truck. maybe someone flipped rear end. I am sure it still has truck 4 speed 1st is useless second is only for getting the truck moving.