Lol, that cam is actually a little bit big with a higher RPM range, and a stock converter. So the converter is not slipping/ flashing, just a bit too tight before the power range on the cam. Once he loosens up the converter it will rip for sure.
Cam is a Texas speed with .600 lift on intake and exhaust. The duration @.050 is 218 intake and 230 exhaust. The lobe separation angle is 112 and it’s ground on a 107 intake center line.
