You can buy a package that is known to make such and such amount. My choice was a Stage one HugesEngines Stage 1 440 Block, Heads, Cam, ported intake. The level 1, made the flywheel numbers in the range that I was going to drive. A package system be it Edelbrock Performwer /RPM/ Torquer II, or Holley systemax, and Mopar performance crate engines.

The intake should be 40-60 % greater runner /plenum volume than the heads. The performer edelbrock or Wieand 8009 would work well with the stock ported heads. The runner volumes would match and package up.

My daily driver was a wild card build, had a 323" w/ 318LA 1.88"/1.60 valve heads shaved to 8.5:1 compression. A 340 hp cam .430/.444" lift , single plane streetmaster 318 intake kept port size continuity, Holley 600 topped it off, Summit headers, and a 4 speed 833 with 3.23 gears. Made 237 RWhp and ran the quarter mile with a 4.10 gear centersection in 14.80's. Type 3800lb race wt 4 door valiant.


The hughes Feels like it makes what the chart tells.