Differential Help

74 Omega · 02-02-2008, 06:35 AM

I am looking to buy a rear end from a 71 Z28 (4.11's and posi). I would like to install it in a 74 Omega. The seller state that it is 54" backing plate to backing plate. Mine looks to be 54" also. My quetion is will this bolt right in? Are the leafs springs in the same location? What other problems I am missing? Any help would be great. Thanks

joe_padavano · 02-02-2008, 09:51 AM

Quote:

Originally Posted by 74 Omega

I am looking to buy a rear end from a 71 Z28 (4.11's and posi). I would like to install it in a 74 Omega. The seller state that it is 54" backing plate to backing plate. Mine looks to be 54" also. My quetion is will this bolt right in? Are the leafs springs in the same location? What other problems I am missing? Any help would be great. Thanks

The 68-74 X-body cars are actually based on the first gen F-body (67-69). The 75-79 X-body is based on the 70-81 F-body. This is a long way of saying it's unclear.

74 Omega · 02-03-2008, 06:18 AM

Thanks Joe,
does any one else have info?

J-(Chicago) · 02-03-2008, 09:35 AM

The measuring tape and caliper are the key tools here.

buzzbomb · 02-05-2008, 10:10 AM

There is always a ton of rearends on e-bay for the leaf spring gm cars.

74 Omega · 02-05-2008, 01:08 PM

I'm not lookin for one, I have all ready found one. It comes from a 71 camaro, I was just looking for info to see if it would fit right in or if I have to modify it.

gearheads78 · 04-03-2008, 03:00 PM

All that matters is that the spring perches are the same center to center. If that is the same it will bolt in. You might need different off set wheels though.

02-03-2008, 09:35 AM	#4 (permalink)
J-(Chicago) Seasoned beater pilot. Join Date: Jan 2007 Location: Chicago Posts: 1,379	The measuring tape and caliper are the key tools here. __________________ I'd rather have a numbers matching poker hand.

04-03-2008, 03:00 PM	#7 (permalink)
gearheads78 Member Join Date: Apr 2008 Location: Dallas TX Posts: 68	All that matters is that the spring perches are the same center to center. If that is the same it will bolt in. You might need different off set wheels though. __________________ 66 Cutlass Restomod/Protouring

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02-03-2008, 06:18 AM	#3 (permalink)
74 Omega Member Join Date: Sep 2007 Location: New Hampshire Posts: 48	Thanks Joe, does any one else have info?

02-05-2008, 10:10 AM	#5 (permalink)
buzzbomb Member Join Date: Oct 2007 Posts: 26	There is always a ton of rearends on e-bay for the leaf spring gm cars.

02-05-2008, 01:08 PM	#6 (permalink)
74 Omega Member Join Date: Sep 2007 Location: New Hampshire Posts: 48	I'm not lookin for one, I have all ready found one. It comes from a 71 camaro, I was just looking for info to see if it would fit right in or if I have to modify it.