ENGINE The original block was toast, and Chris opted for a '95 360 Magnum crate engine as his starting point and sent it to Shelley's Performance. To achieve 408 cubic inches, the bore was honed out .030-over and stroke length was increased to 4 inches. Since the path Chris would take on his second engine build would be different, the engine was built to take more punishment than last time. Forged JE pistons attached to forged Eagle H-Beam rods are bolted to a forged Eagle Stroker crankshaft. A ProCharger kit forces air into the modified Holley 750-cfm carburetor bolted to the M-1 intake manifold. Cooling and fueling are assisted by a Snow Performance Methanol injection kit. The mixture is then directed into a pair of ported Magnum R/T heads with Crane 1.6 rockers. An off-the-shelf Comp Cams camshaft was slid inside to command the valves. Its grind specs are .544/.555 232/242 on a 114 LSA. Once the mixture is in the chamber, a full MSD ignition converts it into energy. It's controlled by an MSD Digital 6 box that incorporates a rev-limiter and an MSD multi-step timing retard selector with different timing settings for the blower and the nitrous. The exhaust is sent into tti headers and an aluminized exhaust with Dynomax mufflers.
TRANSMISSION: Shelley's Performance rebuilt the 727 transmission and reinstalled the anti-ballooning 3,500-stall converter. A Gear Vendors overdrive adds under/overdrive to keep rpm down on the highway.
DIFFERENTIA Shelley's Performance built a custom 8%-inch housing with Moser axles, 3.55 Motive gears, and a Detroit Tru-Trac differential.
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