455ci Engine Build Part 1- The Devil's In The Details
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JTES used a degree wheel and a specially mounted board as a reference instead of a wire pointer. While this method isn't commonly employed, it's extremely accurate. The split overlap method was used to determine absolute center of dwell at TDC, and it was indicated with a line on the board at zero. The cam is then rotated to 0.050-intake lifter rise, which is also marked on the board. The intake opened at 13 degrees before, but JTES wanted it to open at 17 before TDC, so the cam was retarded 4 degrees. View Related Article
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