IMO the Hi-Po heads will make at least 100 more hp than my 426 SR's but for my current package they aren't a very good fit. They have poor port velocity down low and my torque numbers suffer drastically. They want lots of rpm to work and the hp peak was north of 7000.
You’re around 600 cubes too, right?
Just proves that not every combo benefits from “bigger” heads.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
