I'm looking into doing a budget 355 rebuild for a 200 shot. Stock crank, Eagle forged I beams, and SRP forged pistons. I won't run but probably 4 bottles at the ABSOLUTE max through it in one year.

So what's the general rule of thumb for stock crank hp limits?

 

Theres no point in building cheap for nitrous. Either stick to NA or dish out a little extra to be safe. As for crank, I'm planning on spraying more than that but I am going with the forged ZZ4 crankshaft.

 

Some of the Impala guys are spraying that much and more than that on whole stock bottoms, one guy has even run a 280 two stage shot on a headsa cam car putting out over 400hp NA. The stock rods are very good as well GMPP sells them as good to 450hp and the safety margin there is good.

 

I think I'll be replacing the rods and pistons as I broke a piston almost completely in two and a rod into about 50 pieces.