Let's see, Chevrolet recommends 34 degrees of total advance with the vacuum advance unit connected to a ported vacuum source (for a 290hp 350 LM1). So how far am I really off in base ignition timing of 20BTDC without vacuum advance and a total of 38 degrees in by 3000?
Last edited by gofstbuick; 12/17/2007 5:34 AM.
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87 GN, and new toy: 1955 Chevy 3200 pickup, soon to have: 383, Cola crank, Childs/Albert 6 inch rods, Brownfield heads, 10:1 KB hypers, CompCam 284 Extreme Energy, Tilton Plate transmission realignment and built Turbo400.
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