91_4x4runner

I'm going to be doing my engine swap 3vze --> 1uzfe (with sc following) this coming june and need to know what the rear axle can handle. I know it can handle a stock UZ (Twisty's, 230 horses), but with a supercharger I should be putting down around 300-350 horsepower. Do you guys think that the rear axle will hold up to it? I know that I'm going to end up blowing my front diff at one point or another, but thats another project. Thanks, Eric.

Edit: BTW, happy 700 posts .

tc

Don't think it's a problem - lots of people running big tires with double cases (super high torque load) without issues.

But yeah, the 7.5" front is toast.

91_4x4runner

Cool. Wanted to know if I needed to budget more for an axle build or not. Anybody running a custom front diff with long travel?

drew303

Stock axles can, and do warp over time (at the flange), especially if abused. Other than that the toyota 8" is a strong axle.

FYI, both my rears were warped @ the flange, i dont remember how badly (i forget the readings on the dial indicator) but it was bad. The wheels wobble and brakes feel like you got worn rotors.

i put the Alloy USA 4340's in from Marlin Crawler

ZUK

iTrader: (1)

not familiar with custom front diff availability.....I tend to agree with tc that a stock 7.5 would be toasted.....
now if I was was doing a project like you, I would get PRECISION brand gears and send them to Bobby for the "cryo and heat treat" process.....then I would have me install them. Carrier bearing pre-load must be set high.

But now that the diff is as strong as it can get, now the axles/cv's are gonna snap. Don't know of any fix there.

Solid axle time maybe?

91_4x4runner

Yeah, a solid front axle might be required to handle the power. I'll just stay out of 4x4 for a while once I get it done. The CV's can handle pretty good power when not turned can't they? I've heard that most broken CV's are caused by full lock turning and skinny pedal...