okay, quick question....anyone know how much HP (approx) the auto tranny LS can take? ive heard i think 250+...anyone know how much +? and will adding a transmission cooler raise this number? if so, by about how much? (going with hayden)

 

~220-250tq and your torque converter will take a ****

 

any way to increase that number to like...350? to be on the safe side...im shootin for between 250-300HP, so 350TQ is a safe number

 

I'm in the same boat. I've looked into an aftermarket tranny, but I'm nowhere close to that much horsepower or torque yet.

 

Not necessarily.

There have been people with the 4T40Es who have surpassed that point and were fine. One example: Ask Aaron @ Turbo Tech Racing, he had a 2.4 Twin Cam auto 4-speed (4T40E) pushing over 300 whp with NO transmission upgrades or cooler.

EDIT: Only reason I mention the 4T40Es is cause they aren't that much different than the 4T45Es as far as strength or design.

 

There are companies that will help you as far as building your transmission but everything is basically custom. This might help you out some:

http://www.ecotecforum.com/forums/showthread.php?t=1281

 

talk to halfcent, he has all the tranny upgrades from IPT i think

 

The performance shop that is gonna do my turbo set up said I'm fine running 250-300whp and torque. I asked about a tranny cooler and he said its not necessary unless I want one.

 

umm I'd defenitley get an transmission cooler. I can't believe they said don't get one...

 

yeah I probably will get one

 

another thing any idea if we can get a pistol grip shifter for our car from B&M or Hurst?

 

shifter? u no were talkin the auto tranny right? or do u just want one for when your shifting from D to N to R...lol

 

Hunter is right...are you talking about the auto or manual?

 

He is probably looking for a ratchet shifter. I don't know if it would work since the computers seem to tell the trans when it should shift. Why can't they just let us drive our cars instead of letting computers decide if we are doing something dumb and taking over? sorry, had to get that off my chest.
Dennis