GM 10 bolt

Did GM 10 bolt 8.5 rear ends come in 58'' or only 60''?

 

ok well how bout this, i need a 58'' rear end that will hold up behind my olds rocket and i want 2.56 gears! what are my options?!!!!!

 

Look under camaros http://www.cadvision.com/blanchas/54pontiac/posi.html

there is a reference site with lots of rearend widths, but i lost the bookmark.

 

The 10 Bolt out of my 93 Camaro is 62'' and I was wondering what it would take to narrow it !

 

Depending on how potent your rocket is, and how hard you drive it, and how big the tires are, you migth get by with the 7.5" rear from a 78-86 midsize GM, they're about 58.5" wide at the drums and you should be able to find one with the ratio you want.

 

heres a place that has some rear end specs
http://www.50chevy.freeservers.com/Suspension_Widths.html#REAR<!--color--></font

 

i haven't fired up the motor yet but i know its built! suppose to run 200+....but who knows. i was gonna run 8" rims so i need the 58" over the stock width of 60"

 

Maybe you ought to look for a Ford rearend then....or perhaps one of those hard to find olds/pontiac units from the late 50s/early 60s....and spend some $$$ building it to the correct width and high strength.

 

One good thing--you're one of the only guys in the world that actually wants 2.56 gears. Those rears usually go pretty cheap.

 

Look for 71 and up nova. They have 8.5" 10 bolt rears that are the same as 1st gen camaros. I believe they are about 58". Most of them have stupid high gears in them like a 2.56 also.

Most of the early olds/pontiac rears have mid 3 series gears it seems. They looks to be the right width however. I have one in my 49' thanks the fat hack.

 

Yep, as Rick said, get one from a 71-74 Nova. They are still like 59 inches wide though. It sounds like you are building a car for high speed, if so, it might be nice to have the Ford 8 or 9-inch and the drop-out center to ease gear ratio changes. The Granada/Monarch/Versailles are 58 inches wide. However the 9-inch Granda rearends are pretty rare and hard to find. The 57-59 Fords have the 58 inch wide rear also.

 

You can find 2.47, 2.50 and 2.75 gears for the 9", usually pretty cheap.

 

i just found some rims that i never sent back to stockton wheels cuz they tried to screw me over on a bunch of shit! they have enough back spacing to run a 60" Rearend so i think i'll go with a Nova 10 bolt 8.5 with those CHEAP 2.56 that NO ONE wants!

 

but they don't have bias ply's that fit a 8.5 wide rim do they?

 

I'm not sure but I think the old "G" series were 8" wide?
L's were 10 cause I had them for years

 

well i could pretend to understand that.......................like coker g78's? The coker chart says i can run L78-15, 820-15, 900-15

 

geez, if you were closer, I'd trade you the 10 bolt under our bucket with 2.40 GEARS! Thing will go 195 miles an hour, (after a couple days and a few hundred miles build up)

 

L60 tires fit an 8" rim pretty well.