Safe RPM for a 408" Magnum?

Yeah, the over-rev is surprizingly strong with this little cam. I would still like more top end power, but I love the crispy off idle response and street manners of this current cam.

The transmission has some degree of adjustability with the Throttle Valve adjustment, and I have it dialed in to spec. It didn't hit the rev-limiter every time, so I think a few more RPM will eliminate it from hitting the rev-limit at all. I think the variation is related to temperature variation of the fluid. I'll do some testing over the next few days and verify the issue is resolved.

I love fast cars, so at some point within the next year; I'm pretty sure I'm going to pull the heads to have them fully CNC ported and hand massaged, and then bump the cam size up a few steps to the 230 & 234 @ .050 range.

I'm not sure how much the street manners will be affected, so I'll have to decide if the trade-off in top end is worth it for this particular car. It's my daily driver right now, gets decent mileage and runs very strong.

Alternatively, my compression is in the 10.2 to 1 zone and pumps around 200 psi on a compression test. but I think it's just too high for a Paxton style blower.