From what I understand 383 pistons sit lower to keep from going out of the cylinder. right? well what would happen if I ran a 383 piston with 5.7 rods on a 350 crank? lower compression? would stuff bind/collide on the down stroke? i am in a build delima...i came across basically two engines with a ****** that I was trading for. I am trying to get one of these running {which ever is cheaper} engine 1. 4 bolt 350 high nickel block bored .30 over still shows hash marks. 383 trw forged flat top pistons with 5.7 rods. no crank. engine 2. roller cam 4 bolt block std bore. might need a bore. GM forged crank and aftermarket rods. Will need new pistons. was hoping to bore the roller cam block .30 over and use the 383 pistons with the 350 crank which would lower the compression. i am getting some after market heads from a buddy but with the flat tops I would be pushing the limits of pump gas with higher compression. He says he does not think the pistons will work...which is why i am asking here. He says turn the roller cam block into a 383...i am like whoa...i need to keep the $$$ down or the wife is going to kill me. I need to do this cost effectively but not cheap where something breaks.
just get a 400ci crank kit for the first engine and be done with it. your rods are stadard so there should be no clearance problems, you could even go with 6.0 rods if you wanted. If you to Northernautoparts.com its a pretty cheap deal.
yeah..was just looking and a 383 crank is only a couple hundred bucks at summit and or enginekits.com.
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