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This question might have been brought up but I am installing a JE piston 13.1 to 1 ratio with a Sparks agressive cam. Is any one running this set-up and did you run into a clearance issue. Sparks and JE were of no help at all, they both said it should work but not totally sure. I know I can clay the motor but was hoping for a little less work. Any help would be great. Thanks