Rear End Swap??????????? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

70C10Step · 12-24-2007, 08:34 PM

I have a 70 Stepside with leaf springs. I have a 76 parts truck with 5 lug 12 bolt rear with leafs that I want to swap into my truck. Can I swap this rear end over without issues... Does anyone know the measurements of each rear end?

gizmo1 · 12-24-2007, 08:53 PM

I did my sons 68 GMC many years ago. I used the old main leaf and the later other spring pack. He had a long bed. It was 24 years ago. Had a muncic 4 speed I think we used the old drive shaft. Aso changed out the front a arms and brakes. He still has it and is getting it ready to drive again. Hope this helps Can't remember every thing Was not that difficult to do.
gizmo1

Longhorn Man · 12-25-2007, 05:35 AM

you'll have to relocate one shock mount on the axle, and I *THINK* the spring mounting pars are the same... but that may be a cut off and weld on deal like the shock mount.
Since the wheels will be needing replaced, this won't matter so much, but the axle will be wider, be about 3/8 an inch on each side. If you have already purchaced rims, this could be an issue. If rims are still needed, then keep this in mind.

12-24-2007, 08:34 PM	#1
70C10Step Registered User Join Date: Sep 2007 Location: Lompoc California Posts: 366	Rear End Swap??????????? I have a 70 Stepside with leaf springs. I have a 76 parts truck with 5 lug 12 bolt rear with leafs that I want to swap into my truck. Can I swap this rear end over without issues... Does anyone know the measurements of each rear end? __________________ All Toys: 1971 C10 Fleetside - I needed it! 1970 C10 Stepside - Midlife Crisis 1969 C20 3/4 Longbed - Beast! 1966 Mustang Fastback - Daily Fun 1965 Mustang Fastback - Money pit!

12-24-2007, 08:53 PM	#2
gizmo1 Registered User Join Date: May 2006 Location: Lincoln Tx Posts: 9	Re: Rear End Swap??????????? I did my sons 68 GMC many years ago. I used the old main leaf and the later other spring pack. He had a long bed. It was 24 years ago. Had a muncic 4 speed I think we used the old drive shaft. Aso changed out the front a arms and brakes. He still has it and is getting it ready to drive again. Hope this helps Can't remember every thing Was not that difficult to do. gizmo1

12-25-2007, 05:35 AM	#3
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Rear End Swap??????????? you'll have to relocate one shock mount on the axle, and I THINK the spring mounting pars are the same... but that may be a cut off and weld on deal like the shock mount. Since the wheels will be needing replaced, this won't matter so much, but the axle will be wider, be about 3/8 an inch on each side. If you have already purchaced rims, this could be an issue. If rims are still needed, then keep this in mind.



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