MMX 460 CI Crate Engine Track Testing: Robert Powell III (SmurfBuilt) pushed one of our 460 cubic-inch, 3.8L Whipple-supercharged crate engines into the 7s on only its third pass—and he lifted at 1100 ft! This combination shows massive potential based on the limited runs he was able to make this year. Unfortunately, weather shut down the remainder of his race program for the season, but the crew here at MMX is already looking forward to what this setup will do in 2026. Robert plans to run Heavyw