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chevy_mike · 10-05-2015, 04:08 PM

I thought I recall the plug gap for an HEI was .040 or .045. I recall it being bigger than stock when I converted. Also, did you upgrade your power wire to the coil? The stock one is a resistor wire and won't give you a full 12+ volts at the coil.

10-05-2015, 04:08 PM	#5
chevy_mike Never Ending Projects Join Date: Jul 2006 Location: San Diego, CA Posts: 3,836	Re: Tuning carb with a Vacuum Gauge I thought I recall the plug gap for an HEI was .040 or .045. I recall it being bigger than stock when I converted. Also, did you upgrade your power wire to the coil? The stock one is a resistor wire and won't give you a full 12+ volts at the coil. __________________ . 1965 C10 Panel, Tiki Express http://www.67-72chevytrucks.com/vboa...d.php?t=506580 SOLD 1968 Chevy C10, Long, Fleetside, Hot Rod Hauler http://67-72chevytrucks.com/vboard/s...d.php?t=313233 SOLD 1965 Chevy C10, Long, Fleetside, Hot Rod C10 http://67-72chevytrucks.com/vboard/s...d.php?t=415702 SOLD We were given two ears and one mouth for a reason... listen twice as much and speak half as often...