Well Ive searched and cant get a good answer to my question. How Huch hp/tq can the stock automatic axle's handle. And is there an upgrade.

No flameing. I know what and where the search button is.

 

you have a good while to go before you start worrying about axles.

what mods are you planning?

 

dude don't sweet it. it'll take alot to bust the axles on an auto. they don't normaly recive the shock they would from a stick shift.

 

Well I have 8.5:1 pistons. Eagle Rods. full valve train with adjustable cam gears and port and polished head. stage 2 cams on the way. a custom turbo kit based around the GT3071R BB turbo with a external wastgate set at 18psi. hahn 3" exhaust and DP. Im saying this will be at 340hp + since every one is getting 240hp with stock motor on 10psi. All parts sitting in my basment waiting to be put on.

almost forgot Im in the process of making a sheetmetal intake manifold.

 

i think they will be fine. besides what would you rather brake, an axle or something in the trans...

 

I hear you there. Ok I guess ill keep the wastgate at 18 psi. so what hp #'s do you think i will get? I would like 400hp but I know the tranny wont last very long.

 

Our automatic trannys are beasts. I agree that it won't handle 400 horses though, . Maybe 350 if you're lucky.

You need a cheap rebuild and it's good for 400+.

 

are you talking at the wheel or crank? theyre rated 315bhp, and given GM's large safety margins, they can probably hold 350bhp safely, and 400bhp if you like playing on the edge, but they'll probably go out under prolonged use at 400bhp.

 

you can get a intake manifold instead of mani your own from vulcan turbo they have some nice manifold for cheaper and just as good than any other competitor out there

 

Cryo the tranny