Thank you for a real life example on how installing larger valves can actually reduce flow. I'm sure you have other examples on homemade porting jobs that actually reduced flow.
I do...... But the worst part is....... I have several examples where it wasn't done at "home", but was what someone paid a shop to do......like the example above.
Those Aerohead 452's, after recutting the seats, back cutting the valves, blending the bowls, and opening up the pinch slightly, flowed 261cfm.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
