Well Scott u got 2 choices. Do it right once or do rebuild after rebuild. U can go the easy route of a limited slip diff(i.e. trak lok, auburn, eaton) but be preppared to rebuild it. Or u can go w/ a locker type differential(powertraxx or trac tech c locker). IMO since u don't drive the car daily get a locker. It won't break. I have a c-locker in my daily driver but it's not bad as people say on the street. It's good to know u can drive to the track, dump it at 7000+rpms then drive home! -Mark

 

Uh u mean places where to get diffs? On corral in the modular section they're doing a group purchase on Lockers. 467$ gets the daddy of all diffs. I think it's through Parkway Ford in GA. Dr Dirt has a powertraxx and he seems to like it. Stay away from the Eaton Posi. I think that powertraxx has a website(www.powertraxx.com) and the locker is at www.tractech.com -Mark

 

Tru-Trac in my ride, so far so good, and i got one heavy pig..

 

I think my mom is running an Auburn Pro in her Cobra. No complaints yet.

 

Differentials - Limited Slip Type (Torque - Sensitive)
Tractech’s limited slip differentials are the Detroit Truetrac® brand, and the Suretrac® and the Detroit LSD™ brands (same product, different market segments). They provide a controlled amount of resistance to a one-wheel spinout, so that the other wheel (with traction) receives sufficient power to keep the vehicle moving.
Detroit Truetrac®
Uses pairs of "Helical" gear sets

Gears only - no clutch packs.

Ideal for 4WD front axles or rear axles, as well as 2WD; light trucks, SUV’s, cars.

Rugged yet smooth and quiet.

Torque bias ratios of 2.5 to 3.5:1 range.

www.tractech.com

 

I've got the Powertrax like Mark said. Overall, I'm happy with it...especially at the strip. It does exactly what it is supposed to there. As with all things though it is a compromise for all around performance. Compromise #1...Thou shalt not get on it hard in a turn. Compromise #2...it doesn't unhook on turns from a stop all that easily because, well..you are accelerating after all and that's when it is supposed to lock. That can be a little hard on your tire life. They have different springs that control the locking and unlocking pressures which might control that. Compromise #3...in a straight line and at a constant speed, if you drop a wheel into a groove or rut, it will unlock quite easily. If you then give it a little gas, it pops back into lock, sometimes with a bang. No biggie, though, just a little noisy at times. As for turning into a parking space or cruising thru the parking lot turns, you can hear it clicking but it's not bad at all. Nothing like the stories I've heard about Detroit lockers. OTOH, maybe I'm a little more tolerant of the compromises in order to get what I want when I stand on it.

Check with Alan's gear works, he's the dealer in the area. He says that the cogs do wear down over time on a street car. Not really surprising though.

Tony