Uncommon Power

This 261 cubic inch, heavily stroked and poked, twin-supercharged Willys Super Hurricane is a far cry from its original form. Sitting atop the block is a custom aluminum cylinder head featuring 100cc chambers, bringing the static compression ratio (SCR) down to 7.5:1—perfectly matched for forced induction.

Supplying the boost are a pair of Paxton SN60 superchargers, force-feeding intake air through ported intake runners, cramming it into the high-flow combustion chambers. Exhaust exits through a ceramic-coated, high-flow header, sending spent gases into a Flowmaster muffler to keep things somewhat civil.

At the heart of this beast is a forged SAE 1035 stroker crank, locked in place by massive steel main caps. A custom-ground, high-duration cam lifts the 1.650-inch intake valves to an aggressive 0.435 inches, ensuring this Hurricane breathes deep under boost.

For precise monitoring and control, the setup includes exhaust gas temperature sensors (EGTs), providing real-time feedback on combustion efficiency. A water-methanol injection system keeps intake temperatures down while allowing for more aggressive ignition timing. The dual-sync distributor ensures accurate spark timing and seamless ECU integration.

Sequential port fuel injection and coil-near-plug ignition are managed by the Holley Dominator ECU, delivering precise fuel metering and ignition timing for maximum combustion efficiency under all conditions. A crankcase evacuation system reduces windage losses while purging harmful blow-by gases, and a full-flow oil system ensures friction is minimized and bearing life is maximized.

All this engineering translates to an estimated 300 bhp at 5200 rpm and a monstrous 370 lb-ft of torque at 3400 rpm—plenty to put serious power to the pavement.

 

High-Flow Coolant Pump

The coolant, pressurized to 16 psig, circulates through the engine by the high-flow pump, enabling the engine to operate at optimal temperatures, reducing the risk of overheating, and enhancing overall cooling efficiency.