Missed on this combo?

RAMM said
If you don't get back to the dyno you will always question this in the back of your mind. Construct a game plan and stick to it.
Bring your compression tester, race fuel, headers with a 3" collector, different carb. Your engine isn't that far off and the curve has normal traits but what I don't like is that engine can't "clear its throat" until 4400-4500 for some reason. Cam and headers is where I'd look. Open the lash and see what happens. Record cranking compression before and after adjusting lash. Good luck and thanks for sharing BTW. J.Rob

^^^^^^^I agree with all this. Plus, unless your headers won't fit the dyno you need to test with the headers you run in the car. I would also like to see what happens when you use a 3 inch collector. I'd also like to see 1.875 with a 3 and a 3.5 and see how it goes.

You will never know until you test. I'd like to see you tighten the lash up some and retard the cam. It's your time and money but what you learn is worth it.