head and cam
I think you'll be happiest with something between 224/230 and 230/236.
A custom billet cam is part of the package

You can pick up a set of used LT1 heads for $175 without much trouble.
Look for casting numbers 374 or 643. Expect $25 for shipping.
What year is your car? 96-97 have castings with less material, which makes them less desirable for porting.
They can be ported too (not sure if AI does it or not, but I know LE will)
They just end up with slightly less flow because the casting has less "meat" for porting.
Last edited by lt1formula275; Apr 26, 2009 at 01:26 PM.
Specifically, a nice vlave job compared to some of the other stuff I'd seen.
I think ported stock heads will outperform even the PRO1 200cc offering.
One thing I didn't like was that they left the pushrods close together.
TFS actually leaves a little more room between them for porting.
Both LE and AI port from used castings.
A set from 93-95 cars are your best bets since they have more material to work with.
Most people buy a spare set to send in for porting, then sell of their stockers later to minimize downtime.
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