i have a 91 firebird tbi, i want to order the chevy crate motor the 350 with 3 something horse i was wondering what manifold i should use, i don't know much abiut the vortexheads and i was wondering if there will be any problem with the egr not working with the chevy manifold and should i order the holey tbi unit to help produce full power since the stock tbi wont keep up?????

 

I know edelbrock sells a performer RPM for vortec heads that seems to be well liked, but I havent used it, so I really cannot say...

 

jon (jprevost) is running a performer RPM and yes you will definatly need a bigger throttle body. the car will run w/o the EGR but a custom chip can fix that