Originally Posted by fast68plymouth
516, 906, 452 heads don’t have similar enough port shapes to be able to use the same program for all 3.

If one were to try it, they’d likely end up with holes in the head.


Theirs or the engine's? grin

'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.