I've got a 3.23 carrier that I want to put a 3.55 gear on (10 bolt posi BOP in 69 GTO). What thickness of spacer do you think I need?

Thanks in Advance!
-Bill

I've got a 3.23 carrier that I want to put a 3.55 gear on (10 bolt posi BOP in 69 GTO). What thickness of spacer do you think I need?

Thanks in Advance!
-Bill

After ripping all the ring gear bolts out of my 64 Impala in high school that had a spacer, I've very leary of them.

.255 to .265. We have them instock. I've used them with no problems. Just use the longer bolts & loctite.

I've also used a ring gear spacer with success.

I made it a point to check and re-torque the bolts periodically, but never found any of them loose.

To add to above discussion, if rear is an 8.5 corporate 10 bolt, need to buy a Mr Gasket pkg of hardened SBC head bolt washers (about $8.00).

As the 8.5 ring gear bolts are lh thread, regular lockwashers will not work, they'll spread when you torque 'em. Unfortunately, the bolts that come with the MrGasket & Summit brand 8.5 ring gear spacers are too long, & without the hardened washers the last 2-3 threads on the new ring gear bolts will strip. As Scott mentioned, need to use blue loctite, too.

'70-72 8.2 Pontiac Safe-t-track carriers also use lh thread bolts & may need the hardened washers if ring gear spacer is used(?). Have not used a ring gear spacer with one of these, usually too much demand with 3.23's.

One of my friends that does use them sets them up with Loctite also between the spacer on both sides.

Call Randys ring and pinion at 1-800-292-1031 or the website at http://www.ring-pinion.com/home...they sell carriers that need no spacers to fit your upgraded ring gear for 109.00...shipping included 2 day ups

Fastback, the carriers Randy's is selling for $109 are 8.5 singletrack carriers, not bare posi carriers.

About the only singletrack carriers I keep on the shelf anymore are the low ratio & mid ratio 8.2 BOP's. End up chunking the 8.5 pegleggers.