Jon Kasse took one of my stock 63 intakes as a science project about 7 years ago. On the dyno with untouched intake the motor made 698 HP with 286 heads done by Kasse as well. Same day 45 minutes later with the ported manifold 780HP. Picked up 5 tenths right away! Largest gain we ever made with the motor!


Since that day the motor has gone through many many changes, and what ever we do still make 780? I can only think that the Intake is just maxed out? Maybe the heads? But I think its the Intake.