So I got a v6 auto Camero I wanna put a small block Chevy in it and a t56 any advice on what I should start with? Pedal assembly flywheel starter driveshaft? Will the rest end old up? I’m aiming for 500 whp should I stick with a t56 or go another route?

 

I'm only going to answer the will the factory rear end hold up in a 500rwhp manual transmission part of your question. Don't know anything about your other questions.

The answer is absolutely not. These cars were designed by GM with the least they could possibly get away with and have most of the cars make it out of the warranty period. The most powerful engine these cars came with when introduced in 1982 was 165 HP and 240 ft-lbs torque. Nothing on 3rd gen Camaros and Firebirds was built heavy duty or meant to last.

Rear ends used were the GM corporate 10 bolt 7.5" ring gear with 26 spline axles, GM corporate 10 bolt 7.625" ring gear with 28 spline axles, and the Borg Warner 9 bolt "Aussie" rear end 7.75" ring gear with 28 spline axles. They are listed in order of weakest to strongest. None when built to the max with thousands of dollars spent will hold up to a 500 HP / 500 TQ manual trans high rpm clutch dump with sticky tires and traction. They will hold up if you pretend an egg is between your left foot and the clutch pedal and your right foot and the accelerator pedal and you goal is not to break the egg and you going to drive the car like Granny going to Church on Sunday.

There was an over the counter at the dealership DANA 44 rear end sold to hotrodders and for warranty replacement use for customers that broke their rear end multiple times and also used on the 1991 and 1992 SLP Firebird Formula Firehawks and later sold to the public by SLP and Summit. It's the only somewhat kind of factory rear end for 3rd gens that has a chance of holding up to the power levels you want. Parts are hard to get an expensive and people that have a 3rd gen DANA 44 rear end for sale think they are made out of solid Gold. Expect to pay $3,500 to $5,000 for a 100% perfect unit.

Your only real option is a aftermarket multi thousand Dollar rear end by the time all is said and done installed in the car. Aftermarket style GM 12 bolt, Ford 8.8" and 9", and DANA 60.

Spend a bunch of money trying to make a sow's ear into a silk purse with factory rear ends and expect to spend that bunch of money several times over after picking the pieces of that rear end up off the road or track several times. You could have just bought a good aftermarket rear end and been money ahead in the long run.

 

500 rwhp will likely shred the factory rear.

Most of your other questions will be answered ITT: V6 to V8 Swap - READ BEFORE POSTING NEW! - Third Generation F-Body Message Boards

 

Power alone doesn't kill these rears, but traction does. As mentioned above, if you limit how the power is applied you can make a rear survive. Sooner or later the rear will break.