hi im new and have a 3400lbs 68 chevelle with a 496 best time was 11.52 at 118 seems slow. the car has tci-350 trans 4.10 gears, 2800 converter and 28.10.5 slicks the engine 10.25 comp merlin 269 heads rpm gap intake jeted edelbrock 750 carb and a comp 574-578 lift hyd cam. (solid runner just slow) what top end should i put together afr? with a solid roller. my goal is mid tens so i can juice for 9. its a strip car