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SCOTI · 11-19-2009, 10:30 PM

The 78 rear is wider (about .750" each side) vs. a 66 housing; be aware it can impact the fit related to the bedsides if the truck is lowered.

The 78 also has leafs. If your truck has coils, you'll need the swap saddles onto the housing for the truck arms. If your truck has leafs already, you need to measure the distance between the center-line of the spring perches. If they're the same from both housings, you can just swap it. If not, you'll need to relocate the perches.

11-19-2009, 10:30 PM	#4
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 22,132	Re: 78 chevy rear end on a 66 C10 The 78 rear is wider (about .750" each side) vs. a 66 housing; be aware it can impact the fit related to the bedsides if the truck is lowered. The 78 also has leafs. If your truck has coils, you'll need the swap saddles onto the housing for the truck arms. If your truck has leafs already, you need to measure the distance between the center-line of the spring perches. If they're the same from both housings, you can just swap it. If not, you'll need to relocate the perches. __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.*