I have a 5.0 tbi 92 RS that I only AutoX.
The factory 7.625 10 bolt has bad wheel bearings and I want to rebuild it.
It's a 2.73 open diff drum rear.

Can a 7.625 10 bolt handle 350 horsepower?
At the AutoX we never do hard launches and any 100% power usage is always done when moving.
Ex: we may rapidly floor it for 1-2 seconds, but never from a dead stop.
The current 170hp 5.0 won't break it, but I'll be using a L33 5.3L next season.(350-380HP)

My plan was putting in:
3.42s
Eaton True-track
New 28spline axles
New bearings/seals
And putting together some disk brakes.

Is this a wasted effort?

 

For autocross this will hold up well. I have pretty much the same setup in my car except I have a torsen posi unit. For the cost I had about $350 in rebuilding mine including buying the posi unit and new pads and rotors.The 10 bolt will be fine!

 

What power, gearing and tires are you using?

 

Just as an FYI you might want to do a little research on changing gears since you have a 2.73 currently. It's pretty well documented here: https://www.thirdgen.org/forums/tran...ear-ratio.html

The problem is you have a 2 series rear instead of a 3. You can go up to 3:08 with no problem but any higher than that and you'll want to make sure you do your homework so you aren't buying parts twice.

 

I only have around 200hp. 3:42 gears and 245/55/16 tires. I am going to 275/40/18’s.

 

It was my understanding that all the axle housings are the same and the only difference is the differential itself.
Since im going with a 3 series True Track, 3.42s should fit.
If I was keeping the stock diff ya, 3.08 would be the largest I could go.

 

You're correct. My bad man I missed the point where you're going with an Eaton

 

No problem, I'm just gathering as much data/opinions as I can.
Still unsure if building up a small 10 bolt is worth it
VS spending more on a 8.8 build.

 

You can run a rear gear higher than 3.08 in a series 2 carrier. You just need to make sure you get the set with the thicker ring gear.

 

The ten bolt will hold up fine behind a 305 TBI. I autocrossed with hot street 355s and a 383 with street tires and never broke the rear. Grab one of the thick aluminum covers to aid in draining and refilling fluid.