Not that i know your engine better than you. But by the sound on the video
it sounds like it would have pulled a few hundred rpm higher. Playing it safe or ?
Not trying to tell you how to drive just asking.
Heo, the engine is done making power at 6000, so I have the shift light set at 6500. I did short shift into 4th though. Maximum torque comes in at 4500, so not sure if I'd gain anything by shifting higher than I did. I need more test and tune time to know for sure. To be honest, I hardly ever look at the tach or light, just shift by ear. It likely would run a bit better, shifting higher, but I admit to not wanting to hurt the engine, being all stock sideoiler block, crank and heads. Undamaged/unmodified 427 MR stuff is getting tough to find these days.