I have a 94 Camaro, V-6/5 speed that I am converting to a small block V6/6 speed. I will be making 440 or so HP, will the 10 bolt survive? If not is there a 12 bolt from a different car that is the right width and has the right brackets? If not, is there a 12 bolt or 9" that is the right width, and I will add brackets?

 

The V6 10-bolt is the same as the V8 10-bolt.... EXCEPT a posi differential was standard on the V8, and only optional on the V6. If you don't have a posi (check build code tag for "G80"), you won't break anything, because you will be doing 1-wheel burnouts.

With the posi rear, you'll do 2-wheel burnouts, and as long as you don't run real sticky tires and do 5,000 RPM clutch dumps you MAY be OK. Some people manage to break the 10-bolt with a stock LT1, others manage to run in the 10's with them. But it seems that an M6 with sticky tires and some abuse will generally foreshadow sudden death. I ran a stock 10-bolt with the M6, minor bolt-ons and a 125-shot of nitrous and the rear survived. But I never ran slicks or launched it hard.

There is no "stock" 12-bolt that will be a direct bolt-in. Main problem is that the stock rears from other GM cars and trucks lack the mount for the torque arm. Strange and Moser make aftermarket bolt-in 12-bolts. Strange makes a bolt-in Strange (Dana) 60. Moser and Currie make a bolt-in 9-inch. At the 440HP level, the 12-bolt would be the best combo of price and weight. The Strange 60 would have a slightly better mechanical efficiency, be stronger, lower price, but weigh about 25# more than the 12-bolt, making it an attractive option as well.

 

but fred....the dana 60 requires a new driveshaft...shorter i think...which makes the price comparable to the regular 12bolt.
so the biggest advantage of the dana is the lower power loss through the setup.