Turbo 400
 

Who makes the best 2.75 first gear set for a turbo 400? How much can a car pickup in et?

Re: Turbo 400
 

I was looking at the samething but my question is how much power can they handle?

Re: Turbo 400
 

How much you'd pick up depends upon a lot of factors, I'd have to know a lot about your combination and how well it performs now. ATI makes a good set, so does Kilgore.

Re: Turbo 400
 

The ATI 2.75 aluminum carrier gearset I have in my stocker has been in too many cars to count. .....Before I put it in the AMX it was in a 3400# S/ST car with a brake! ....It must have well over 1000 passes on it. ......Not as trick as Kilgores stuff tho. .....Tom

Re: Turbo 400
 

Could slow you down too.....:eek:

I went the other way with the Kilgore 2.10/1.40 set and it is quicker than a 'glide, or the stock 2.48/1.48 gearset. It is not any of the trick light stuff.

Sometimes reducing the speed at which you accelerate rotating mass can take less parasitic loss and improve your ET. Usually that would be when you have plenty of HP and torque multiplication from your converter.

Re: Turbo 400
 

I have a 275 gear set, $250.00 plus shipping.

Brian

oakes2074@hotmail.com

Re: Turbo 400
 

I believe that. I went to a 4.10 gear from a 3.90 and slowed down. Even the 60' was about .02 slower. going back to a 3.90 when the wallet gets a little fatter, LOL.

Re: Turbo 400
 

Bobby, Was the testing Back to Back same track and day? If the track will hold the 4.10 it should be quicker in 60 and et unless running out of RPM and running flat. The fact you quote a slower 60 worries me about the test ..... Tried a 2.75 versus a 2.48 trans back to back runs picked up et with MY way of driving. Picked up more by leaning on the convertor also after that... Shifting later to 2nd also helped to a point. I needed to retest the 2.48 with all the later facts too to be sure I couldnt make it better with convertor torque.

Re: Turbo 400
 

No, but the weather conditions were close (yea, I know, close only counts in horseshoes and handgrenades) They don't change a whole lot in south Texas. Kinda worries me to. But being a Pontiac powered Pontiac, seems to run out of torque. and horsepower. doesn't like 1/4 mile anymore.

Re: Turbo 400
 

I was lucky I had my kids running at all the same tracks too. They didnt like to change stuff so they made an unchanged run and I made a change. If I gained I could also judge for others or the kids ets.
Good Luck. Sounds like the pontiac thing of low end torque may be the real answer..