Thread: pistons 3.480 or 3.750

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well yeah i would like to achieve high 6's to low 7 thou. rpm. now when building this mtr i would like to run about 11.5:1 comp would cast pistons and stock 350 crank work ok or should i get some hypereutic's and forged crank? also how would stock rods work in something like this.

but in other words the 350 pistons and 383 pistons are the same

Ok, now I'm confused. Didn't you say you wanted to make your 350 into a 383? If so you will need a 400 crank.

If you are asking whether stock 350 cast pistons and a cast crank will take 6K rpm. Yes they will. Stock car claimer motors were all built with cast internals.

Most of us have wanged cast pistons way farther than the factory ever intended.

I have blown up my share of engines but I have never broken a cast crank. I have spit stock rods out the side of blocks, burned holes in cast pistons, but never have seen a cast crank "broken".