Like the title says "What kind of rear end would be best suited for roadracing?", if there are other areas that come into play that aren't covered by one question then just post them please.

 

im no expert on road racing. but my understanding is that these cars are not super powerful/super torquey motors so i would think that a 10 bolt would be sufficient. or if your car has a 9bolt already (mine does) stick with that. they are a good bit stronger than a 10 bolt.

someone correct me if im wrong, i could be very far off, but thats my understanding.

 

If your asking about aftermarket rears I'd get the 12bolt over the 9inch for roadracing. The 12bolt is a more efficent sp? rearend. The 9bolt works great for dirt track/drag racing where you need to constantly swap gears

 

What about gearing?

 

Jimmy, I to am hoping to see some road racing with my TA.

I stayed with the 10bolt, but added a few extra's to help.
Like 'NJITIROC' said, the road courses will not abuse these rear ends as bad as drag racing. What straight out kills these small 10bolts are high rpm lauches.

The one thing that will take there toll is the posi unit. I went with an aftermarket Auburn unit. Any aftermarket posi will have beefer spiders, etc...

I decided to run a 3.42, which shouldn't redline me to bad with my 3 speed TH350. Gear selection in the pro or money earning ranks probably depends on the track itself. I'm sure they weigh in many varibles, likes straights, torque out of turns, and down right fuel consumption.

I installed new bearing, with my Auburn & Richmond gears.
I installed a reinforced cover, to give the axle case more rigidity.
I mixed togather a blend of synthetic & regular gear oil, and posi additive.

I guess if I had extra money laying around I might consider a 9", but over 2 grand. woooo I still need wheels, tires, brake, cage, hood, yada, and yada...

Ron