HEI spark plug gap??
12-31-2005, 11:05 AM
#1
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HEI spark plug gap?? I tried searching... sorry.
what plug gap are y'all running with HEI? I just swapped one into my Jeep's straight-6, and would like to know how wide I can go. Thanks.
what plug gap are y'all running with HEI? I just swapped one into my Jeep's straight-6, and would like to know how wide I can go. Thanks.
12-31-2005, 06:00 PM
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The plugs for my chev motor come pre gapped at .40. With a fresh stock HEI (aside from taylor wires and msd cap/ rotor) it seems to handle .55 ok. @.60 it started to miss when I wound it up past 4000 or so. Keep in mind the higher the gap you go with the faster you will burn out plugs.
Last edited by rapid_rat; 12-31-2005 at 06:26 PM.
01-01-2006, 12:43 AM
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Gotcha, rat. The motor won't see anything over 5000 rpm, so I'll probably go something like .045". I've always liked the middle-of-the-road approach. Thanks for y'alls help.
