Quote Originally Posted by ProStreetMonte
Thanks, Sorry guys they are the open chamber heads, wow never thought of it that way. but it does sound like a piston coming up and hitting the bottom of the head. I will update you on what I find when I tear it down.
Now, you have me going, what is involve with converting this cam and lifter to a roller retro. I would like to hear the motor shake a little bit harder. in doing this, should I find that the piston is hitting the head, are what are we talking about doing to raise the head up? I dont feel that it is the piston hitting the valve only because I think more problems would have already developed. such as bent valves when adjusting them. Let me know what your thoughts are.
I will keep you up to date when I remove the heads......
Again Thanks
you do not raise the head you cut the dome on the piston or open up the head chamber if the valve hit they get bent and would run very bad retro roller cam hyd need retro push rods and retro lifters thust button you may need better valve springs if you use a iron core cam you will not need to do any thing with the dist gear or fuel pump push rod if your using a mech pump i done many hyd rollers retros