Inliners International Forums General Discussion Engines quick question

what is the stock size for a piston in a 1975 chevy nova 250?

ok im looking at some pistons online and they are various sizes bored over ... now i'm still fairly new to this so does that mean i need to also bore my fittings to that specific size?

You need to bore your cylinders to remove any taper or scratches (scores)so that all cylinder surfaces are perfect to about 600 grit finish with clearance for the pistons. Then you buy pistons to match the over bore. Not all pistons require the same clearance. Your machine shop should be able to handle the details for you. Are you going to rebuild an engine??

Larry

yeah im going to rebuild my 250 and possibly adapt the turbo set up to it, but for now im thinking the rebuild will be all. i am just having trouble right now finding a place to get pistons, i found them online for cheap but i dont know if it's the right dimensions and what not.

yeah thats the best choice, but i am trying to locate a good engine shop around central florida, but because i'm not "in the know" i want to get someones advice that is knowledgable of 250's as to where the best shop is.

You can give Joe a call at THE MACHINE SHOP.( 407-851-4050) they are here in Orlando.
He built my 250 That I ran for 17yrs With Out any issues. This motor was Not rebuilt stock by No means.So he can handle your stocker.

AWESOME...this place has access to aftermarket parts for 250's as well?

Which Place?? are you talking about?

The place you mentioned "The Machine Shop"

Yeah Joe is a Nice guy. He built my one 250 Back in 84. And I ran that motor for every bit of 17yrs Plus. It was my daily driver Then when I started changing the rear gears then it went to Nothing but racing. Now Im getting ready to install a fresh motor.But anyway glad you got ahold of him and he could be of help to you.

oh no i havnt called him yet, i was wondering if he has access to aftermarket parts ... but i also sent you a pm seeing what you have as well.

What aftermarket parts are you looking for?

MBHD

well i made list before ... i'm trying to find essential brands to incorporate in my 250 rebuild, but i'm not trying to go race like some of edelbrock, msd, and those big name products. basically i'm looking for a moderate (medium?) distributor, head that i can use headers with, or if i should get a re machined integrated head, things of that nature.

You can make up grades to your stock HEI if you wanted to.But if your going back to a pretty much stock Motor No real need to do so.It will do fine.
But if your plains are to up grade the cam. Then it would be better to swap out the OLD intergrated head for a early style head. Get headers Or Tom Langdons dual CAST exhaust.They will Out Last ANY Headers on the market to day Even if they have been coated. As for Intakes
It's either Offey,Clifford OR one of Engine companys. Intakes . last but not least You build your own or have someone else build you one.