Quote Originally Posted by erik erikson
Is that with you porting them or a pro. cylinder head guy porting them?It might be eaiser if you give us some engine specs. and we can tell you if the are even worth using.
My specs are 408 cubes, 4.155 bore, 3.76 stroke, 300in 310exh duration Mechanical cam with .556in 568exh lift. edelbrock rpm intake, 12.5:1 compression. hooker headers 2in or 1-7/8 diameter. L88 crank, stock truck rods with ARP bolts.