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Old 05-10-2010, 03:03 PM   #1
dougminton
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Join Date: Mar 2009
Location: norman okahoma
Posts: 269
Big Block ignition timing

I need some help with ignition timing. Its a 462 10 to 1 compression oval port heads with big valves .590 intake .610 exhaust camshaft single plane intake holley 780 MSD HEI. Current timing is 15 initial 36 total. Any help would be greatly appreciated.
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1972 GMC SWB
454 oval ports
TH400

fastest 1/4 mile time so far
13.05 @ 104

If you think you have too much horsepower
you obviously have a traction problem !
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