I see in Kur4o's LT1 XDF the usual Fuel Cut Offs:
Speed:26DC & resume 26D7
RPM: 26D8 & resume 26DD

I can also see
167B4: Max RPM for 0 bpw
167BA: " " " " " " " must be same as above.

Max value 255 (0xFF) sets it as 6375 RPM

I've read many threads about big cams being shifted at 6700+ over the years and LT1's spinning to 7k.
Maybe their tachos were out?

If this hard limit is correct (and I suspect so because I can't get this motor over 6400 rpm), can it be raised or deleted in any way?
I'm still making power at this point.

Thanks
Mitch