Inliners International Forums General Discussion Hi Performance 250 torque mods?

You could try a timing set with multiple keyways if available. Advancing the cam will close the inlet valve earlier and move the torque peak to lower rpm, theoretically anyway. It's possible you might decide to retard the timing instead to move the torque peak higher. Depends on your hardware (manifolding, cam specs, and basic engine design primarily) and how the engine output torque curve matches your application.

My point is altering cam timing is not expensive and easy to try. If you have means of cutting a keyway in the timing gear it won't cost anything but a couple gaskets and your time. If you find a strong response to the timing change that might also give you a clue what specs to look for in a new camshaft. Of course you must start with a degree wheel on your current combination.