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I have the ford racing X302 valve train kit installed on my heads. I am not sure what the spring pressure for that is nor what it should be. Anyone have that information
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I'm assuming you have the Ford Racing X cam to go with this spring kit????????? I know a number of guys running this cam and similar cams in Mustangs with the factory roller lifters, same as in your pics, and they race them hard and I've never heard of any lifter failures from them.........
Your cam card/cam specs should have the instaled spring height as well as recommend spring pressure.........First thing I would do is find the cam card/cam specs and then find out exactly what the installed spring height is as well as the spring pressure on your heads.........my guess is it is way too much and putting excess pressure on the lifters/cam and valve train........
Your cam/specs determine the spring height needed as well as the spring pressure needed.......
Just my 2 cents....
David