Trickflow trackheat or performer rpm
Plus it’s an RB, so the runners are longer. But, part one or two of the B engine test don’t really apply either, with the OP's engine at 512 cubic inches with a 4-3/8 bore and a 4-1/4 inch crank. But, it does give some insight as to how a Victor intake (probably the closest intake to the track heat) compares to the Performer RPM...