Does anybody know how much power and torque this axle will handle. Is there any upgrade besides putting a straight axle in. Is there any avaliable lockers for this 8.25 axle. I put in my create motor and I'm scared to get into it in 4 wheel high and am super scared about 4 low. 444hp, 436lbft.

As for how strong the ifs really is, to be honest, its not that strong at all. There are no available lockers for ifs. To put this in comparison, you really shouldn't put anything bigger than 35's on the ifs, although people still do. I don't know much about superchargers, but I would imagine that everything should be fine, but that is just my own opinion.

I see your from Indy. I am in Bloomington attending IU. Hope this helps, but I am sure someone else will tune in to help you out.

I don't think its a matter of how much horsepower/tq it can handle, but more about how much abuse. You can break it pretty back with a stock drivetrain, so how hard you wheel it will determine what breaks.

Traction is going to be your big issue. If you have no traction (highway tires offroad, for example), you probably aren't going to break anything by means of power. If you suddenly gain a lot of traction though, stuff WILL break.

I don't know what truck this is in, hopefully you have a 3/4 ton Tranny/rear end. A 3/4 or 1 ton rear end will handle the power, so i say go easy when in 4wheel drive. If you don't go crazy with teh skinny pedal, you should be ok.