I just built the motor and have had it running for 2 weeks. No times yet. Still getting some seat time. Stock cam with 1.7s right now. I asked about the heads before I tryed it and everyone said that there would be no problems. I didnt even check for clearence other than turning it over by hand to be sure. I was that convenced. Maybe with a bigger cam, I wouldve checked. My friend has his 306 with heads shaved .040 with the f cam and no problems so I dont know. Hes running low 8s in the 8th on street tires. No 1/4 mile times though.
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