67-72 rearend in an 81? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bigcarguy · 05-12-2004, 11:02 PM

I've got a rearend with 3.73's and a posi in it off of a 71 Chevy, I believe, that I had bought for my 72 before I got rid of it. I still have that rearend and was wondering if I could swap the gears and posi out of it and into my 81's rearend. I know the whole thing wouldn't fit since 67-72's had coils in the rear. The build sheet says that I have the standard rearend, if that helps any.

**swervin ervin** · 05-13-2004, 01:05 AM

Yep. They will fit any 12 bolt truck rearend all the way back to 63 or 64.

**Warrens69GMC** · 05-14-2004, 03:31 AM

If you or a buddy knows how to set the pinion angle, and you have access to a welder, just weld the leaf spring perches ($20) on to the coil rear. There nearly the same width and you wouldn't have to shell out the $ to set the ring and pinion up.
warrens69gmc

05-12-2004, 11:02 PM	#1
bigcarguy Finally a Bulldawg Join Date: Apr 2001 Location: Athens, Georgia Posts: 220	67-72 rearend in an 81? I've got a rearend with 3.73's and a posi in it off of a 71 Chevy, I believe, that I had bought for my 72 before I got rid of it. I still have that rearend and was wondering if I could swap the gears and posi out of it and into my 81's rearend. I know the whole thing wouldn't fit since 67-72's had coils in the rear. The build sheet says that I have the standard rearend, if that helps any. __________________ Ah yes, the college life. School all morning, work all night, study when ya can. Uh...

05-13-2004, 01:05 AM	#2
swervin ervin You get what you pay for Join Date: Dec 1999 Location: Cherryville, NC Posts: 4,798	Yep. They will fit any 12 bolt truck rearend all the way back to 63 or 64. __________________ Mike 1985 Chevy C-10

05-14-2004, 03:31 AM	#3
Warrens69GMC Registered User Join Date: Jan 2003 Location: Safford,AZ Posts: 3,622	its cheaper and better- If you or a buddy knows how to set the pinion angle, and you have access to a welder, just weld the leaf spring perches ($20) on to the coil rear. There nearly the same width and you wouldn't have to shell out the $ to set the ring and pinion up. warrens69gmc



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