Cudaman

This same 383 , before I turned it into a Stroker

Ran the 284 / 484 Mopar Camshaft for 20 years

Speed pro forged flattops

When I installed these same Edelbrock E Street heads that I am running now with that old camshaft

6,000 RPMs all day long if I wanted and higher , right up until I kissed some pistons with those same Eddy intake valves on the highway racing a Mustang


Hence , the new motor

New lifters? Adjustable rockers?

Ultimately, if you’re enjoying the car as-is, that’s all that really matters.

Just keep in mind, a nice solid cam would retain most of the good drivability you’re enjoying now, and get the performance back to what you’re looking for.

At the same time.......... it doesn’t sound like you’re at the track often enough to justify chasing the ET.

Maybe I missed the answer to Matt's question, but did you degree the cam when installing it?

This is why I vote spray a 125 or 150hp n20 kit when it goes to the track. With all of that tire you could leave on the nitrous and with a ring swap you could move towards the 175-250hp jets which is when things start to get really exciting. You won't wear out a bottle while it sits in the trunk and if you are into car shows look at it this way; nobody can see if it's a 383 or a 511" engine from the outside but some nitrous solenoids make for a pretty good ooh-ahh to the non-performance and street performance folks. Just one guy's opinion.

For extra cool points find a low deck fogger!

Do you have adjustable rocker arms? If so you could do one more easy check.