Can Auto stock trans handle 500whp safely?
 

I have the Stillen supercharger with the 9lb pulley, headers, test pipes and cat back exhaust. With all my mods together I'm pushing 440 whp 327tq. My question is do you guys think it would be SAFE to get the vortech impeller upgrade considering all my internals and trans are OEM? Also I have both oil and trans coolers along with the csf tripple pass radiator and my oil temp never goes above 190. Even during "spirited driving"

There is a post here somewhere about the 7AT and the manufacture rates it up to 300tq so I wouldn't think it's a good idea.

How long have you had it at 440/327 for?

I've been over 400/300 for about a year and track mine. We had it on the dyno yesterday at 418/310 and were getting no tran slipping.

Put some money in that tranny.

If I were to go FI, I'd probably have my numbers around there, 400/300. Sounds like the tranny can definitely work it out. What's your daily driving pattern like? I'm assuming you take it easy on the streets and you launch on on-ramps to freeway every now and then.

I still haven't decided whether I'd go STS turbo or a stillen SC. Personally, I'd like to keep the numbers just slightly high enough that it's still 'faster', yet, not enough to kill me or the motor/7AT.

I'm not always hard on it but I wouldn't say I'm nice to it. It has over 12K with the SC on it. I bought a set of BFG G-Force comp2s about the same time and the rears are slicks now. I'm waiting on new wheels so I can get them off the car.

This reminds me of hangover 3 on the reason why Bangkok is called Bangkok. Throw too much money into a tranny and....the rest is history. :roflpuke2:

Dude brand new tranny(no homo) is like $1800 well manual at least.
And if i remember correctly it can hold up to like 600lb of torque. If it goes its cheaper to buy a new 1 anyways. But for automatics i dont know and its cheaper to buy a manual with "$-mode" and an extra pedal, when auto goes.

I drive it every day and honestly I drive it like it's my last day on earth! I didn't buy a race car for the look. I want to be able to drive it like I stole it. I know someone on here will have something to say about it but that's my style

Our 7at trans is around 8gs bro so there is the hesitation

About 3 months. I bought the car in April and put the Stillen supercharger on a month after that. Along with all other mods. Everything went on all at once. Car was bone stock when I bought it

Thanks for the link Kai. I've read most of that thread before but didn't really get a difinitive answer. Guess its just at my own risk. I wanted to get impeller upgrade before nationals and get the tranny work done over the winter so I think it will be OK for a couple thousand miles without the extra trans work but we'll see

At the very least get a trans cooler and tune to increase the line pressure, and take it easy in gears 4-7.