4.6 DOHC swap 66 Ford F-250

Mayberry burnout contest with my 4.6 DOHC swap 66 F-250. I was playing the truck down when I said it had a stock engine and also when I started doing a weak burnout in the beginning. It would pull 1st and 2nd gear and if it wouldn't try and go into overdrive it'd pull 3rd also. The truck did well, it sat at 6-6500rpm most of the time. The only issue was right at the end of the burnout you can hear a loud screech which is the water pump tying up. The 140k mile water pump didn't like the sustained RPM.