phalcone

Im building a 88 gt . putting in 347 stroker 425hp 450tq at flywheel . have vortech s trim to add to the equation . AOD built by artcarr. what gears would be best for me 3.73 , or 4.11 i still want to be able to cruise my car around on the weekends. thanks

rsw007

3.73

phalcone

3.73 is the way I want to go ... i just didnt want to make any mistakes ... i wanted to hear from an aod owner ... thanks....

nitrous_bob

i had 2 aod's and even use 4.10's in my 5-speeds.

it all depends on the converter you use.

if a 3000+ then ok w/ 3.73's , but i still like 4.10's over them

thats just my $.02

Mustangkiler

Ya converter makes a big difference i got 4.10 in mine but i got a stock converter and whe ni do change it i am only going to go to 2800. Plus with horsepower getting close to 400 or more at the wheels you will need whole high priced drag racing type suspension to hook up with 4.10's

phalcone

wow ... so many opinions on the gears ... I guess all i can realy do is try them both right? at least that way i know what will work for my setup. I believe the converter in the car is a 2400 stall the guy that had the trans built said it has a 294 first gear in it? I think its the same first gear ration as the 5 speed ... I'm just so foriegn to automatics.. thanks again

rsw007

stroker motor with 400+hp is not going to need 4.10's unless its not makeing the power till 6000plus rpms. you got to watch having to much gear and hp then you start having traction issues.

gspfunk

3.55's or 3.73's w/ the blower...you need to keep some load on the engine.

2 kwik

me I'd go with 3.55's since you top gear is 1 to 1 and with that said depending on your pulley for the SC you'll be in the 40,000 rpm on the SC and they have a 50k limit..something to think about....I run my sc @ 45,000 at redline