rear end swap - The 1947 - Present Chevrolet & GMC Truck Message Board Network

my64truck · 10-10-2006, 07:12 PM

i have a 64 c20 with an eaton. since parts for this are few and i found a 69 dana, is this a good swap? the rear gears i have are 4.56 and i am looking to put something like a 3.73 in there. any other ideas? thanks

Frizzle Fry · 10-10-2006, 07:41 PM

I believe the rears will swap between 60-72 years from coil to coil trucks. There are plenty of 12-bolts out there in junk yards. If you get one out of a 1/2 ton V8 truck it should be 3.73 or close to it. 6 cyl and heavier duty trucks had higher ratio rears as far as I know.

10-10-2006, 07:12 PM	#1
my64truck Registered User Join Date: Oct 2006 Location: fairfield, ca Posts: 1	rear end swap i have a 64 c20 with an eaton. since parts for this are few and i found a 69 dana, is this a good swap? the rear gears i have are 4.56 and i am looking to put something like a 3.73 in there. any other ideas? thanks

10-10-2006, 07:41 PM	#2
Frizzle Fry Registered User Join Date: Aug 2005 Location: Hillsboro Oregon Posts: 6,449	Re: rear end swap I believe the rears will swap between 60-72 years from coil to coil trucks. There are plenty of 12-bolts out there in junk yards. If you get one out of a 1/2 ton V8 truck it should be 3.73 or close to it. 6 cyl and heavier duty trucks had higher ratio rears as far as I know.



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