1988 Ford Mustang 5.0L Muscle Car - Make 600 HP On Pump Gas

With the blower back on, we preloaded the belt to minimize slipping it, and the ProCharger began building boost even at 3,000 rpm. The peak numbers are impressive with 605 hp and 520 lb-ft of torque out of a junkyard 302, but what's really cool is how effortlessly this came together. Remember, this is all on 91-octane pump gas. Adding a splash of 100-octane unleaded Rockett Brand Racing gas to the tank and upping the timing from 28 degrees to 32 degrees was worth 618 hp at the same 6,200 rpm with a total of 12 psi of boost. Clearly this little runner was willing to keep going with never a hint of problems with the short-block. The OE forged pistons obviously helped make this happen. We haven't done a leakdown test, but it would probably be beneficial to tear into the short-block and add rings and bearings. Then again, as strong as this motor runs, we're going to just leave it alone and beat on it some more. It's way too much fun.

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