so im building a procharged 383. using epp cam and stock 317 heads. im getting all callies compstar crank and rods. pistons im using either wiesco or diamond. what cc piston should i go with? also for a 383 its a 4.00 stroke and 4.125 connecting rods correct?

 

you need to match up your dishtop pistons to your cc's that'll be in the head. my suggestion call one of the sponsors like texas speed or scoggen dickey and talk to them about the build and ask if they can help you with the CR choice. it comes down to do you want to run high boost on pump gas and be safe (with some meth injection) or do you want to run low boost on stock compression. here's an example i'm buying a 402 forged iron block from SDPC and i'm gettin -15cc dishtop pistons because with my 67cc heads i'll achieve 9.5 to 1 compression for my S/C build. good luck to you

 

i believe the 317 or 72cc heads. they are gonna be stock no work done to them. im guessing i want 9.5 to 1 im gonna start out with 12-14 pounds maybe up it to 16-18 in future. my goal is 650-675 at the wheels

 

how much power would i be making on that setup without the procharger bc i mite need to drive around n/a for a little while

 

You should read the 383 build article in GM high Tech Mag. Some great info.

 

Im pretty sure connecting rods are 6.125 in a ls1 383.

 

Do you recall what month/year that article is in?

Thanks for the help

Eric

 

Might be talking about this article? : http://www.gmhightechperformance.com...ild/index.html

It's a 4 or 5 parts series. I'm putting together a 383 right now and there's some good info here.

 

Thanks for the quick reply.

 

If your building a motor why use 317 heads? Unless you already have them i would rather use LS6 heads if on a budget....

Alot of people use 317 heads to lower the compression of a stock motor... But if your building it use the pistons to choose the compression not the heads. Useing LS6 heads will give you more options in the future if you ever wanted to upgrade your heads to say AFRs or TFS... .02