What most people don’t realize is that engine stresses increase exponentially as engine speeds rise,” explains Harrison. “So moving up from GT’s 7,000 rshared_pm redline required significant re-engineering of many different parts. Sacrificing reliability and usability over the GT engine was never an option.”

Some of the Boss-specific parts contributing to the Boss 302 V8’s output and durability include:

Revised composite intake system with shorter runners, inspired by Daytona Prototype racing engines, for high-rshared_pm breathing

Forged aluminum pistons and upgraded sinter-forged connecting rods for improved strength, needed for the higher combustion pressures and engine speeds

New high-strength aluminum-alloy cylinder heads with fully CNC-machined ports and chambers for exceptional high-rshared_pm airflow without sacrificing low-speed torque

Lightened valvetrain components to provide excellent dynamic performance up to speeds well above the engine redline

Sodium-filled exhaust valves for improved heat dissipation

Race-specification crankshaft main and rod bearings for higher load capability and improved high-speed durability

5W50 full-synthetic oil with engine oil cooler for improved oil pressure and longer-lasting lubrication during extreme racing conditions

Revised oil pan baffling for improved oil control under racing conditions and during cornering loads greater than 1.0 g