Ok..just replaced head gaskets again (first time didnt have the heads inspected..they were a little off so now they are about brand new after the machine shop got done with them) and got everything bolted up..started the car and it idle's fine in park..sounds smooth and nice..heck almost better than before the head gasket blew. Now in park its a whole different story! Sounds like its missing..all the plugs are on right..just real rough and all. When driving it..seems to sputter a little bit, sometimes seems to knock a little and lacks power..but didnt know if this was the gaskets and new valves kinda seating in like a bike. I was going to do a compression test but have actually read that you need around 100 miles on fresh valves for them to be seated (I build mainly bikes..and this is true for them, but mainly due to the higher RPM levels we see) so askin yall for some answers..any ideas??