Hi Tc people, I ran to a dude at car wash he was admiring my car, he was telling me how much he love the Tc because he use to have one an 05, now he gave it to his nephew. He told me he had a flint Tc and was pushin well over 300 + hp then he blew his tranny. So he told me the tc tranny can not handle that kind of power. Also he fix the tranny and drove from mass to the westcoast had it tune by kenny tran at 277 hp. He told me to be careful, 250 hp and under for Tc is good enough. I wanna know what he saying right?

 

I'm not 100% on this but as far as I know our trannys are very strong and can hold up to like 700-800HP. Your clutch might go after 300+HP but i doubt the tranny will unless he was jamming and grinding gears all the time. If you shift correctly it will hold the power. People on here have 300+hp on stock trannys all the time with no problems.

 

i think driver error may have been the cause, we have plenty of tC's over 300 whp and never really hear of tranny issues. mine has be around that mark for about 50k miles and i've never had a problem other than clutch stuff

 

yeah a driver error will make the tranny go more than the turbo unless you have crazy numbers on it.. stock clutch of course will not last

 

Don't drive like a douche and you'll be fine.

 

^^ crap.. thanks for reminding me

 

the automatic tranny starts to break around 240whp he must of had a auto

 

i would have to believe that the guy was talking about the auto tranny...either that or he just had a really f-ed up manual. If he were talking about 5-speeds breaking around 300 HP, then there would be ALOT more ppl with busted trannies on here

 

Forgot about the auto trans. But yeah, over 240 on the auto trans = inevitable failure.

 

tranny should hold power, its up to driver....clutch will not hold and you shouldnt drive around on boost w/ stock clutch for too long, b/c when the clutch goes it does damage to other parts of your transmission, me i drove stock clutch for 1 month on boost and it blew and damaged my flywheel. Now i have a new clutch, refurbished OEM flywheel and i have nasty synchro problem. after every cold start no matter how good you shift i get a grind during a 2nd to 3rd gear transition. sucks but price one pays for having everyone and their mother learn to drive stick on your car.

 

For the record, I am getting ready to swap a tranny in my girls tC right now. It is an automatic- it was dynoed at 235hp and 225tq at the wheels on 8 pounds, meaning it was probably at about 260/250 at the crank. we upped it to 10psi not long after that. less than 5k after that it cracked some piston ring lands. Now it has forged rods and pistons, and a blown automatic transmission. So yeah, the automatic is pretty weak. Of course she drives it like a race car.

 

The guy I was talking about he had a manual tranny running 330 hp and it is a zpi kit.

 

i think u were talking to a guy who had a stock tc at one point and was on the forum too much and so he knows what zpi is but doesnt know that tranny is strong..

 

after taking apart the trans in our tC, 4th gear is definately the weak gear. Drag racing is really hard on the trans because of the crazy shock load, wheel hop is a killer. Also you have to choose your clutch properly, many people go overkill when choosing a clutch and that could actually shorten the life of the transmission because of increased shock-load when shifting.