Mystery Intake.

Ran one on my first attempt at a SB street/strip car. Had a 360 with KB107 pistons and J-heads (2.02x1.60 valves) with a .528" Purple cam and 273 rockers. Budget dream street motor, 16"hg (still had 15"hg with 1.6 Crane roller rockers, .562" gross lift) and ran 12.70s@109mph with 3.91 gears and a 3000 stall on 91 octane. Later switched to a RPM and had a better 60ft time and the same MPH, and a 12.67 ET. So this verifies the previous comments pretty much dead on.