MeanWS6

I am trying to justify the 2K cost of the unit, just for OD. The car will be a 90% track only car, but the track is 60+ miles away on the highway. I have 3.73 gears.
I just want to do it right the first time no not regret it later that I didnt dish out the 2K to get the setup.

next

iTrader: (9)

The very best advice I can offer you is from years of trying to make cars fast. Either build a street car or a strip car. If you try and build something that will do both, you'll end up with a car that's not great at either. This is my opinion from trying to have the best of both too many times.

If you want to go fast, I'd just go with the t400 and no O/D. Remember, there was a time not too long ago that there was no such thing as O/D. Your tranny can handle it, just get a good cooler and keep up on the maintenance. In the early 90s I daily drove a 67 Camaro with a t400 and 4.56 gears. Car never had problem.

Good luck with your decision.

W2WSS

hey im curious does the th400 weigh more or less then the stock unit

Nasty_T/A_GT

I would say more I dont have an actual weight but I have lifted both and the t400 feels a lot heavier.

Shon Herron

iTrader: (25)

This is the reason I went back to an A4.....
If the car is more a track car then deal with the revs, you can also run larger rear tires to get back some RPM but I drove mine daily with TH350/3.73/26" tires and it got old. 28" rears would have given back 200-300 RPMS, the next idea is less gear.

nitrorocket

iTrader: (12)

If I could do it over I would have bought a 4l80 from the start!! Figure $1400 for t400, $850 for converter. For a measly $1000 more I could have had one! If you starting from scratch, go directly to a 4l80, otherwise its to much of a loss after you sell your t400 and converter. As far as the GV goes, It still does'nt give you lockup! It will NEVER be as efficient as a 4l80. Just my .02.

2MuchRiceMakesMeSick

Ill be getting a TH400 on my street car (weekends strip). Im also going to get GV OD.

MakoLS1

You have to make the decision before you buy the transmission. You always have to give things to be faster, like overdrive, give up horse power for a beefier drive train, gas mileage, ect ect.

1quickformula

iTrader: (3)

i have a 400 trans in my car, no od unit, 3.73 gears. with a 3600 stall converter. 28" tall tire. runs great on the highway 2900-3000 rpms @ 75 mph

2MuchRiceMakesMeSick

You dont wish you had OD?

badass 2002 z28

iTrader: (5)

I just drove my car for the first time with the TH400. It's really not as bad some people say. Do I wish I still had overdrive? Sure..do I miss it? not really

Like said above...if you want to go fast/ have a beefy drivetrain you gotta give up somethings...

Roadrunner 45

iTrader: (1)

I don't miss the overdrive one bit- 3:73 gears and TH400 with 3500 stall

MeanWS6

good video about the GV OD unit
http://www.gearvendors.com/videoclips.html

V6 Bird

iTrader: (15)

NEVER in a million years would i want to have OD....I get the same gas mileage on long cruises as i would with the OD trans that came init.

Mike