I've been workin on a 4.3 build and I'm gonna ship out my upper and lower intake and heads to get ported...
But I wanted to know wut specs to ask for for optimum performance and so I don't look like an idiot when I'm talkin to em...
I'm goin for an all out 4.3 build h/c/i and stroker kit of course...
Was even playin with the idea of honing out the valve seats a touch...
Thoughts?

-Coop

 

<bump>

 

Best to do the headers, upper and lower intake if you are staying NA.
Its a good idea even if you plan on going to a M112 setup later, just sell your upper intake to someone here or ebay, that magical land!

Its not really worth it imo to just do the upper intake.
Porting doesnt help if there is still a bottle neck somewhere.

best of luck

-Eric-

 

coop7: you should really make your own thread instead of taking the OP's thread over

but to answer your questions, just port it to the max, if you bog down then get shorter gears :P 4:56 OH YA! lol

 

Did kinda steal the thread huh?
But thanks man...
Oh...
And where the hell did the damn smileys go?

-Coop