Im thinking about building a 355 with the stock crank, forged rods, and forged pistons. what would be a safe rev limit for this setup? 65-6600? Im wondering bc this is going to be the deciding factor for the cam and what duration to run. Thanks

 

Depends on a few factors such as: What type of springs are you going to run, lifters, rockers...etc... Are you going to get the rotating mass balanced?

 

the rotationg assembly will be balanced, i will be testing out the new Alex Part dual springs, 1.6 rockers, chromoly pushrods, LS7 lifters

 

im mainly just wondering if the stock crank is good for reving to 65-6600.

 

I've seen the stock crank rev to 7k and beyond, easy. Go for it.

 

Agree..have seen a stock crank hit 7000 many times.

 

Ive heard of people turning 7500 rpms / 750 flywheel HP on a stock crank.

Also on the list of the fastest LT1's theres a guy running 9.7x @ 138ish ( i think) who runs a 300 shot on a stock crank 355.

I wouldnt lose any sleep going to 500rwhp or 7k with it. Balance the shortblock, go 4 bolt main for the hi rpms.

 

exactly what i wanted to hear. thanks guy

 

It will be fine IF it's in good shape. Have it Magnafluxed to be sure.

Rich

 

it should be in good shape. its got 116K on it...it was a fine running motor and was only removed bc the car got tboned...its outta one of my cars from a few years back

 

Yeah, but do the due diligence. Like Rich said, have it magnafluxed and checked for straightness. FWIW, I am doing the same thing shortly.