Originally Posted by ponjohn
What is the final compression ratio with the ls6 heads and 6.0?
Curious, have you calculated MPG?
Stock LQ9 is like 10.0-1 so i think we are 10.9-11.0 to 1 with LS6 Head.
Gas mileage hasn't been calculated as i don't really drive the car but around town, race it.