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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: derrick79 on June 30, 2011, 06:28:46 pm
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Hey guys, I am trying to tune my truck but I can't make out the numbers on my little saw tooth timing tab. Anyone know what the numbers are? I think its 12 8 4 0? Also any suggestions on what to set it to? Stock 350 with aluminum intake, msd, and 650 carb.