340 dyno chart thoughts

fez440. I'll ask a question no one else seems to have.

What is your altitude. BC altitude can be ALL over the place.

A lot of people forget about altitude and it's affect on power. 10:1 compression sounds like a lot. Right up until you are at several thousand feet. I'm at 3,000 myself. And planning head work and a new cam. To get 8.5 DCR (dynamic compression ratio) on the cams I'm looking at, I'm around 11-11.5 compression. On iron heads. I'm running 94 octane. So I could go even higher. But I don't want to run on the ragged edge.

If you are happy with it. That is great. But if you want more. It's there. With aluminum heads even at sea level you should be safe with more compression. With the port work on those heads, you are leaving a lot on the table with your cam/carb combination. There are MUCH better cam's out there, carbs as well. There's no reason you couldn't pull 450+ horse out of that setup with minimal effort.

Just a quick look - your DCR is 7.85 at 0 feet. It only gets worse the higher up you go. On aluminum heads you could run up to 9.5 on 91 and still be safe. Cam has low lift for it's duration. And the intake valve closing angle isn't great. You could go with something like hughes: SEH2832AL-10. 228/230 duration at .050. 108 LSA. .530/.536 lift with 1.5 rockers. Very similar duration. Little lower LSA. Would have good vacuum. Even with that cam and it's better intake valve closing angle, you're still at 8.5 DCR. You could still bump the static compression up to 11:1 to make a DCR of 9.3 to 1. And remember, that's all calculated at 0 feet. The higher up you go, the more compression you'll need to make up for it.