416 Burning oil and the road to redemption

o1heavy said
I would have expected more of them horsepowers

Added a 1" open spacer and manifold vac line. Final test: 499.4 HP @ 5800 rpm 517 TQ @ 4300 rpm. It also had 7.5-7.7" vacuum @ 1050-1100 rpm. It will be interesting to see if it picks up after going through it. J.Rob