ok swapped heads from stock to ls built head... i bought a set of rev valves from exospeed and had the exh side only put in,cus the machine shop said the intake side didnt seat ryte so i was gonna need oversized valves,so he got me a set of aftermarket intake valves.... I wanna know if the length of my intakes are the same as the exh cus it seems like the valve stays open on the intake side which is letting the air escape and causing the car not to turn over due to lack of no compression?/????anyone ever have this problem....