How much power can be put through the factory six speeds? I know the clutch would need upgraded but do you think they could handle 400-500 hp?

 

I am more curious on how you plan on putting down anywhere close to 400 hp ....

 

^^ agreed.

Its funny that ppl just ask stupid questions all the time, what happen to common sense ?

 

I am curious about this same question. Want to know what setups people are or were runnign when there transmission went.

15lbs with a Precision 6265 with meth/water injection.

 

I know for a fact that Chickenwafers' transmission failed very quickly when he made 325 ftlbs of torque . That equates to about 17-18psi at 5000 rpm on a Renesis .
And that my transmission has held up well while making 260ish ftlbs (10-11psi) at 5500 .

 

Not to turn this into a thread that compares other transmissions but i hear that a swap to the FD trans or the 09+ trans are an improvement. Anyone have any good info on this? I can not find any hard evidence on how they handle the power compared to the original series 1 trans. Kinda looking at my options since i am planning on mine going out soon.

 

Old dragger has run the S2 trans for a while in his SC setup . However SC's make a lot less torque than a turbo (generally) and EricMeyer mentioned the other day that the S2 g/box has a very small diameter input shaft . If so that may well be the limiting factor

 

This is the real question!

 

Any info on the FD trans going in? I have read that its a option but i believe there are a few things that need to be changed to get it to fit properly in the car. However, you would think it would hold up well.

 

I have a buddy that has a supercharged Taurus SHO motor that needs a tranny since he is switching it to RWD. He heard that an RX8 tranny will bolt up to a Duratec bellhousing. More or less a custom setup.

 

^^ I guess that makes more sense, my apologies for the first post, thought this was going to be another "i want my 8 to have 500hp" thread

 

it will be. trust me

 

I figured after I posted that I would get ***-slammed with negative comments. I guess I should he went into further details. I plan on leaving my 8 close to stock. This post was for a buddy.

 

Quick answer is dont use the RX8 trans. If people with boosted eights are having issues with them then they would not be good for a project that will put down more power or torque then a boosted eight.

 

Thank you!

 

I wonder if I cyrotreat the gears will make a difference.