[Fasterthanyou]

Originally Posted by 9secfirebird

to rebuild vortec heads and buy used ones will cost you between 800 and 1000 dollars and a tpi intake manifold is something like 300.

iunno if i had world heads id just port them and get a better cam to that still matches compression and rock em. what cc chamber are they?

Not poking fun but he listed the chamber size in the first post, 58cc.
Where are you getting those prices for the heads? Yes the vortec tpi base is expensive, that's why I wouldn't consider option 2.
$680 or less depending on if you need the .600 lift, $650 for the .525 max lift heads. Grab yourself a porting kit from a generic website for like $10 (yes they are all the same and Summit just jacks up the price on these kits). Do the porting yourself to save money and go with the Holley Stealthram for vortecs when it comes out. I think that with a hot cam or the zz4 cam would work out really well and depending on the port job you'll see over 400hp. The worlds heads could support the same power but now you can sell them to pay for the vortec Stealthram . The vortecs have a better intake port design and the chamber is a better design. That's why I like the vortecs, they're lt1/4 technology for gen 1 engines only without that crappy EGR