scottygrape
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I am thinking of putting a 14cc GX160 head on my Hemi Predator. I read somewhere that it will give an increase of 1HP. By doing this swap should I use the valves and rockers from my hemi head in the gx160 head? Or do I just keep the GX160 head together. And do I need to worry about valve to piston interference if I bolt this on and my piston is flush in the hole?