Judgment day arrives and the mousey little motor is set up on the dyno at Jim Grubbs Motorsports. Grubbs was also responsible for much of the machine work that went into the block. After the break in period of the engine and incremental pulls, a few power pulls were made, but the numbers were only in the high 400s. It turned out the throttle linkage needed some adjusting because the secondaries were not opening. The high 400s doesn't look too bad if that is just the power from the primaries. After the linkage adjustment and some timing adjustments, another pull was made to 7,500 rpm and the lovely numbers popped up on the screen. At 5,600 rpm, the torque peaked out at 458. Peak horsepower topped off at 534 at 6,700 rpm. Like the original Z/28 race engines, this sucker is a high-rpm beast designed to run on race fuel.
302 Small-Block Engine Build - A Wolf Among Mice
This Race-Inspired 302 Puts Up Some Mighty Numbers
Classic IndustriesHuntington Beach, CA 92648
Air Flow ResearchValencia, CA 91355
Comp CamsMemphis, TN 38118
Jim Grubbs MotorsportsValencia, CA 91355
Oliver Connecting Rods(616) 451-8333