i most of done something wrong i dont have enough power heres my combo. 302 bored 60 over, keith black pistons 9:5/1, performer package from edelbrock,including 202 valve heads, 1.6 roller rockers . 650 carter or 750 holley vac sec. tried them both, pertronics ign. c4 tranny shift kit. 9" rear with 389 gears traction lock, long tube headers.