where do i get a posi?

[leonard williso]

so where is the best place to get a posi rear end that will fit in my 77 monte? i want 3.73 gears and was wondering where is the best place to get the whole unit to drop into the pumpkin. i have an 8.5 10 bolt. i've looked up some but don't understand the whole 28 spline ect. crap. Is there a unit that comes with the gears in it or do i have to buy them seperate? thanks.

[bigdude]

There is no 'drop in pumpkin' on yours and 373 posi for yours would be kinda rare

[Itoldyouso]

Yep, not as easy on yours as if you had an 8 or 9 inch Ford. Those have drop out pumpkins, on yours you have to go in through the access cover on the back and install and shim the gears. Check Richmond Gear, I think they make a limited slip setup that can be installed on yours. The Camaro I am looking to buy has a 10 bolt and a Richmond Gear decal on the side, so I suspect they have what you need.

Don

[mike forte]

Hi Leonard,
I sell the 10-bolt posi unit you're looking for along with the bearings, ring gear bolts & more.
NOTE: The ring gear bolts are left hand thread on your 10-bolt differential.

[tudorkeith]

I know a few guys with v8 s10's and 3:73 gears, they went with a powertrax unit. I've seen them in summit but that's just one option

[leonard williso]

thanks for the info

[leonard williso]

any opinions on using a detroit truetrac lsd