Yes, 31's are fine.I am building an 8.8 rearend for my bbf powered mustang. I hope the engine is 500 hp, and it will have a 3,000 stall converter in it with 3.73 gears, no transbrake. Will 31 spline aftermarket axles be strong enough?
I plan on welding the tubes, putting a girdle on it, factory locker, c-clip eliminators, 31 spline moser axles. Is this enough or should I put 33 spline in it, and will the factory 31 spline locker handle it?
2 years for me on 31's with 700 hp / transbrake.
Its not usually the launch that kills the axle, its tire shake.