8.5 rear from A body cutlass... what u think?

[84cutlass383]

found a 8.5 rear from a early 70s cutlass, has a posi, 4.11 gears, and it was taken out from a 88 monte so the hard work is done. he wants $450 what u guys think?

 

[Qdub24]

I would already be putting it in my car.

 

[-83MONTESS-]

I would already be putting it in my car.

x2.

 

[84cutlass383]

Does anybody knw the dimensions of a 8.5 from a Abody car vs. one from a Gbody 8.5 rear?

 

[84cutlass383]

got the rear end yesterday and it measured 62in wide. my question is can i stil run my stock 15in ralleys or do i need to go aftermarket wheels?

 

[khan0165]

khan0165 wrote:
78-88 Gbody 10bolt ---> 58 inch wide
64-67 Abody 12bolt ---> 60.5 inch wide
68-72 Abody 12bolt ---> 62.5 inch wide

with 8.5 10bolt, you need to shorten driveshaft 1 inch over what you had with 7.5 10bolt
... I don't know what it is for a 12bolt

^^^ the above also goes for A-body 10bolt 8.5s, they were 62.5" wide in '68 to '72
your wheels may stick out past the sides of the car, as our rear's are only 58" wide, and you've now gained an extra 2" on each side.

you might need 6" backspacing now... This is an excellent opportunity to upgrade to 80s Corvette alloy wheels... They came in many sizes in 16s and 17s, ranging from 8.5" to 9.5" wide, good for tires from 255s to 275s.

 

[84cutlass383]

khan0165 wrote:
78-88 Gbody 10bolt ---> 58 inch wide
64-67 Abody 12bolt ---> 60.5 inch wide
68-72 Abody 12bolt ---> 62.5 inch wide

with 8.5 10bolt, you need to shorten driveshaft 1 inch over what you had with 7.5 10bolt
... I don't know what it is for a 12bolt

^^^ the above also goes for A-body 10bolt 8.5s, they were 62.5" wide in '68 to '72
your wheels may stick out past the sides of the car, as our rear's are only 58" wide, and you've now gained an extra 2" on each side.

you might need 6" backspacing now... This is an excellent opportunity to upgrade to 80s Corvette alloy wheels... They came in many sizes in 16s and 17s, ranging from 8.5" to 9.5" wide, good for <A class=vglnk title="Link added by VigLink" href="http://motors.shop.ebay.com/eBay-Motors-/6000/i.html?_nkw=tires&_trksid=p5197.m570.l1313&_rdc=1" rel=nofollow target=_blank vglnk_1333726836068="2">tires</A> from 255s to 275s.

would that fix my tires sticking out the wheel well? Is there anybody with this set up - A-Boby rear and a set of wheels with 6" backspacing?

 

[Blue86Monte]

I run an A-body rear with 5.25 offset draglites. Tires are JUST tucked into the rear lip.

 

[JBreu]

I have a '69 12 bolt in my car.....Running welds 15x8 with 4.5 bs, looks pretty good to me 8)

 

[CUTLASSJESSE]

i'm doing the same swap in my cutlass i measured out that i would need 5.5 backspace and you will also need adjustable uppers to correct the different angle on the ears umi sells a great swap kit for this