Luis69stang

So... If i get my heads bored... Do i have to change my pistons?

texastboneking

Not sure. Didn't know you could bore heads

Pete07GT

Yes, unless you're sleeving the pistons but when you "bore out" the heads you are having them machined to fit a bigger piston for more power potential.

Pete07GT

Not that you could offer something constructive to say, right?

texastboneking

You know how to bore heads???

texastboneking

You bore a block and you deck heads. There I was constructive.

Pete07GT

:applause: Jesus thanks you and so do I, Trent.

Pete07GT

Excuse me sir, you "port" and polish heads yes?

texastboneking

Lol I find it funny you confirmed his question when you didn't know what tour talking about

Also. You don't bore a block for power.. you don't gain much from boring.
You bore because the cylinder wall is messed up and you need it to be fixed by boring it out a bit.

Luis69stang

So... is the answer yes?
And is ported a good term for you to take the question seriously?
Than you.

Pete07GT

See Trent, even when you're coming off abrasive you're still insightful. Thanks buddy!

texastboneking

Porting the heads has nothing to do with the pistons so no

Luis69stang

And would it increase the horsepower?

texastboneking

Porting heads yes

Pete07GT

What are your goals with your motor exactly? Are you running a 289?

Luis69stang

Its a 302, I have intake and carb edelbrock...
Going to put new camshaft and ignition system...
Do not have an number goal, i just want it to have a much better response and a mean sound

skunk21

you don't have to change the pistons. I have stock ported and polished E7 heads with gt40 valves. I also a FRPP E cam all on the stock bottom end. Better than stock ( yes noticeable)although given up some to an aluminum headed motor, my heads flow GT40 #'s ( not P). I also have a ported/polished intake all done by Tom Moss. Decking the heads would change compression but this can be changed by different thickness head gaskets. Just like texastboneking stated boring the bottom end doesn't amount to much, a "306" isn't really any more powerful than a "302" with the same parts.

Luis69stang

So... I could just port my heads and put a new cam without changing anything else?
Thank you.

texastboneking

Depends on the cam. Might need new springs..

skunk21

I upgraded mine but like stated depends on the cam specs but since the stock springs are just about rated for the stock cam specs I put the springs on the list. for the street you are going to be looking at just under or around a .500 lift cam with about .224 or so of duration I would think, that would be on par with most mild street cams and offer a quality bumpy idle.