Its currently a stock 94 Lt1/M6. This winter the motor is coming out and getting rebuilt in hopes of a T-trim with air to water after cooler and Long Tubes. I am planning on a forged crank, rods, and pistons. I would like to see compression below 9:1, Is this possible with a stock heads? I would love to have a set of trick flow or AFR heads with larger chambers but I don't think the performance gain of an aftermarket head will be very significant and worth the $1500-$2000 price tag if the car is forced induction, what are you thoughts on that? The Reason I want forced induction is that i want to make big power but I need to pass emissions. What camshaft will be best for boost, emissions on stock heads or aftermarket heads. Any other useful info or opinions are welcomed.

 

Bigger flowing heads will make a BIG difference even on a boost application. The larger chambers will help too.
Cam should be recommended by the guys that make it,but basically it will be a short overlap,short duration cam as compared to N/A.

 

Is there any way to cost effectivly increase the combustion chamber size in the stock heads to help lower compression? Or would I be better off spending more money on different heads like AFR or TrickFlow. I have also heard that none of the after market heads will flow as well as a ported stock head. How low can I get the compression using a 54cc chamber?

 

There is enough material to go to 57-58CC's on a stock casting if done by a pro.
TFS will outflow a stock casting if ported correctly.