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09-02-2012, 08:11 AM
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Registered User
Join Date: Mar 2012
Location: edgartown mass
Posts: 852
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Re: ignition timing 1980 gmc
you can use a vaccum gauge and try for 18-20. also there may be a grove on the balancer that is the mark for it and then you need the arm and your good have 3 of them like that not the best i think but works
__________________
1986 c20 "the hillbilly" 350 sm465 3.42gears 21mpg at 70mph 1985 k30 "the ice cream truck from hell" no rust az truck 197-8??? c30 "ramp truck" 454 1978 monte carlo 350 350th with 2.73 gears. no rust. sc car |
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