Designed for high-effort naturally aspirated Ford Godzilla 7.3 L engines, the BTR-GZ231 U-231 camshaft delivers dramatic horsepower and torque gains while providing a strong aggressive idle.

Brian Tooley Racing BTR-GZ231 Features:

• Duration @ .050: 231 Int. / 24X Ex.
• Valve Lift: .663 in. Int. / .663 in. Ex.
• LSA: 110 deg
• Operating Range: 2200–6800 RPM
• Expected Gains: +130 HP / +60 ft-lbs over stock

Brian Tooley Racing BTR-GZ231 Notes:

• VVT limiter (BTR-VVT-GZ-8CAM) included.
• Requires aftermarket rods & pistons due to tight valve clearances.
• Professional calibration recommended; built for high-RPM NA builds.

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART