This is an excellent upgrade no matter what the spec of your car. Gain in power and torque throughout the rev range. We have developed a fantastic head that cannot be beaten!
This is a modification to your cylinder head. We will need your casting back to carry out the work.
Large Valves are required when you need to pass 450hp safely - 34mm Inlet / 30.5mm Exhaust Valves.
When the Big Valve option is selected, you will also be getting new guides, valve seats and a LOT more work to make the most of them!