Drivetrain"When they popped the hood, it just floored me," John says of the first time he beheld the enhanced GM 502/502 seething under his Nova's hood. Perfor-mance Aero Engines in La Verne, California, align-honed and blueprinted the crate job and reground the cam to 244 degrees at 0.050 and 0.618/0.616-inch lift. A custom 970-cfm Holley mixer built by Performance & Associates in San Dimas, California, tops an Edelbrock Victor Jr. manifold. Ignition is an MSD 6AL, waste disposal is handled by customized Hooker headers teamed with DynoMax pipes and mufflers. John added a Mattson's radiator and electric fan to keep things cool, while March pulleys spin the accessories. He also commissioned a Monster 700-R4s from Toy Box Trans-missions in Pomona, California. And with the overdrive tranny in place, John took the opportunity to bump the narrowed 9-inch rear up to 3.70:1 gears.