Ford Racing Timing Chain QUESTION. PLease HELP

[PKRWUD]

It will not change your duration or your lift. The cam is exactly the same. It will change the relationship between the pistons and the valves, as far as when they open and close. generally speaking, advancing the cam lowers the power range rpm, and brings the power in sooner. Retarding the cam does the opposite. The engine will start to develop power later, but will last longer. When advancing or retarding by as much as 4 degrees, you are only changing the location of the power band by 300 or 400 rpms. The best way to determine the best camshaft placement for a specific engine is try it in different positions, and do a compression test with it in each. The best location will give you the highest compression. That is where your combination of parts will work the best with that cam.

Take care,
-Chris