rear gear for 3/8 mile dirt

[racer11x]

I have a 2.56 transmission that I run 2nd gear, 8x 22.5x 13r hoosier tires ,and have a 3.45 rear gear in car as of now and I'm getting left behind ... What would be a good combo tranny and rear gear? Also have a 2.14 transmission. And rear gears I have 3.08 and a 3.27 ... Or do I need different rear gears ? Any help will be greatly appreciated... Thanks for your knowledge and posts in advance

[car62]

curious to know what tranny you have that has a 2.56 2nd gear ratio

[racer11x]

curious to know what tranny you have that has a 2.56 2nd gear ratio

Car62 ! Honestly I'm going by what I was told it was supposed to be, so really I don't know what I have it came in a buy out package deal .

[car62]

your current setup gives you an 8.83 final with a small 13" tire,and on a 3/8 track by the numbers you should be turning just over 10,000 rpm

[little302]

Im thinkin you need to check your final drive..Never heard of a 2.56.. Love to have something that low though!

[racer11x]

Had a friend look at it , he said it is a 2.34 transmission.

[Dirtman29]

That's a T5 trans (87-93), same as I use. So u actually have a 8.07 final ratio. Are you getting "left behind" because your screaming the motor at the flagstand or is it just not accelerating? I agree with that gearing & 13" tires on a 3/8 track you could hit 10K on the tach.

If your engine can safely hit 8K, I would use the 3.08. JMO.

[Dirtss70]

I would try the 3.08 rear gear with your tranny in the car first. If that's still too much gear then go with the 2.14 trans and 3.27 rear gear.

[let-r-eat]

The SROD with the 2.56 second gear you could move to 3rd gear and run a 3.73 or 4.11.

[pitroad mafia]

I run a 3/8 track too. We run the 214 trans and a 345 rear.