The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Late Model Rearend in 67-72 Trucks

Senator350 · 01-27-2009, 04:16 PM

had a 80's one ton rear in my '70. but was an 8 lug.

From my memory... might not be accurate:

the WMS-WMS of chevy SRW rears is between 62" and 69"

IIRC the front axles of our trucks are around 67", so a newer rear will hurt your tires due to a ruined track width.
BUT... you can space your tires however you want with different backspacings and wheel spacers to regain your track width.

getting wider as they get older.
62"ish in the late 50's
64"ish into the 70's
67"ish into the early 90's
69"ish lately

01-27-2009, 04:16 PM	#3
Senator350 Registered User Join Date: Feb 2004 Location: Albany, NY Posts: 522	Re: Late Model Rearend in 67-72 Trucks had a 80's one ton rear in my '70. but was an 8 lug. From my memory... might not be accurate: the WMS-WMS of chevy SRW rears is between 62" and 69" IIRC the front axles of our trucks are around 67", so a newer rear will hurt your tires due to a ruined track width. BUT... you can space your tires however you want with different backspacings and wheel spacers to regain your track width. getting wider as they get older. 62"ish in the late 50's 64"ish into the 70's 67"ish into the early 90's 69"ish lately __________________ RN U OVR Last edited by Senator350; 01-27-2009 at 04:19 PM.