I just picked up two clamps from Granger , they were like 2.60 apiece. After seeing All of the positive results I felt I needed them. As my Timing is all over the place above 3500 RPM. Thanks for the post Prosport., mike


73 Sport 440, 509 cam w/Eddys 3.91 and 28.1"/27.3 tire. Et. 60 ft. 1.435, 1/8th. 6.61 @ 101.80 mph. 1/4. 10.472 / 127.78 mph. 2950# race/with me,and pump gas.