I've got some extra cash on my hands and I'm thinking about getting a 12 bolt for the rear. I just finished building a 383 but rather than setup for the drag strip, I think I'd rather set it up for twisties.

Keeping that in mind, what should I consider when picking a rear end? Any recomendations? Are the Moser units sold through Thunderracing any good?

Thanks,

Nate
93 Z28 M6

 

Moser makes a pretty good rear end. Just about any 12bolt should work for what you are going to be using it for. You might also consider a 8.8 conversion. They are cheaper and should hold up fine to road racing.
If you go ahead with a moser 12bolt a few things I would get would be the HD posi, the gundrilled axles and anything else you can do to lighten it up will help get more power to the ground.

 

Moser's a nice unit. Make sure you retain ABS and know which one you need when you order (3-channel is for most cars, 4-channel is needed for those with Traction-Control equiped cars).

If you can, spring for the aluminum cover (a MUST), and 33-spline axles if you have some high hp goals (although 31 spline will work fine for 400 to 500 hp).

If this is a daily driver you'll need a posi differiental. Open diff is pointless on ANY car (IMO), and a spool (or mini-spool) is only good for strip-only use. Eaton and Auburn posi's both have good reputations. Eaton has great customer support with warrantee claims as well (ask me how I know ).

 

Thanks for the inputs guys.

So Steve, how do you know?

 

I have the Moser Rear-end and it sings (makes noise) between 50 and 65 mph. I’ve talked to others with the Moser rear-end and they have the same problem. I was told that it was because of they have Pro-Street Gears. I’ve heard others say it’s because Moser don’t know how to set up the gears properly.

Some say Strange Rear Ends are more quiet and built better.

Good Luck,

Al

 

i've heard the opposite. both are good and both should hold up to ALOT more than a 10 bolt

 

I didn't say it wouldn’t hold up. I am just saying $2200 plus labor it a lot to pay for a noisy rear end. Most of my driving is between 50 and 60 mph and it tends to bother me a little bit. Most of the times I just turn up the radio. But after paying that much for a rear-end, why should I have to? Do what you want. I am just giving you a warning, Moser Rear Ends are noisy.

Best of luck,

Al