We start by doing a more aggressive porting/polishing. Oversize valves are mainstay. The intake valves are 1mm oversize, while the exhaust valves are custom cut from blank valve stock for an exact fit and size that yields optimum power.

This head has the full Ferrea valvetrain package which allows higher RPM's to be obtained because of the springs and retainers that will prevent valve float at high RPM. This head also with the new stainless valves will give an added safety margin when running higher boost levels. The port and polish job will increase the efficiency of your engine and with this head a 20-30hp gain is likely.

The extra attention and detail and custom manufacture of hardcore specific parts makes the TMS head package above and beyond other heads that use plain off the shelf parts.