alright, some of you have read about my project in the tech/general engine and the exhuast boards. i have for the most part decided on the motor for my "Mighty Mouse" small block. it will include a 355 with pro topline 235cc heads, big lift, blah, blah, blah! the main part of the motor is the d-3 procharger that will be forcing everything through with a bout 25lbs of boost. my question is, with the capabilties of over 1000 hp, what tranny should i go with. i have a guy in OK that can build me whatever i want for pretty reasonable. i need to know, however, if i should go with a:

powerglide
th350
th400

i know that it may seem strange to run an automatic but that's what i have decided. if any one could inform me on the gear ratio's of these trannies, suggested rearend gear w/ 28" tire, and the amount of hp to drive the tranny that would be appreciated as well.

 

Definately not the TH350. As I understand it, the PGs are really only recommended for cars under 3000lbs.

I'd definately vote for a well build TH400.

Good luck!

 

anyone else?

 

gear ratios (stock)
th350 - first 2.52 second 1.52 third 1.00
th400 - 2.48 1.48 1.00
powerglide first 1.76 or 1.82 second 1.00

i'd put in a vote for a 350 or a 400.. a well built 350 is pretty much bullet proof same goes for a 400.. a 350 weighs less...

 

yeah, that's what i thought that i had heard too. i thought that the th350's would be alright if built right, and the guy that is building mine will definelty build it right!

 

yep as far as stock goes they arnt anything too special, but lookin at all the mods your doin to the engine i really didnt think you were lookin for a stock trans

 

so, what would guys recommend gear ratio wise with a th350 and a 28" tire?

 

4.10