why is my 434 so slow on motor. 13.8:1. 23* 11x heads they flow really good [email protected]. 243ext, super victor fully ported, pro systems 1100 dom,cam is 282,[email protected],.681,.660. ls109. It has a glide1.80, 9.5conv,4:11 gears,28x10.5 slick. car weighs 3250 w/me. best pass was 10.60 @128 on motor:smt089. It does have a speedtech diffuser plate which I have not used yet. I just feel it is a dud compared to other motors I have seen. How much can it pick-up on a 200 shot?