Duraspark vs hei. DUI and HEI are both GM style 1 wire electronic distributor ignitions with the coil integrated into the cap and an internal module. I got my dizzy harness out of a 1984 ranger with a four cyl makes it truly plug and play. Apr 20, 2014 · Actually, the Duraspark with the cheap GM module works pretty well, and is the cheap option, which appeals to many- MSD works even better, and MSD even makes a harness that plugs the two together correctly for about $15. Two years and working great. . The Duraspark dizzy is a better unit than the HEI, and not so butt-ugly and huge- MSD uses Duraspark components in their dizzys. (Mostly leaning toward HEI because it seems more readily available at parts stores near me) 1. TRICKY or TRICK? HEI Module Inside Duraspark Case - Ford Muscle Forums : Ford Muscle Cars Tech Forum Nov 6, 2018 · HEI versus Duraspark Jump to Latest 11K views 15 replies 10 participants last post by MrFlash Nov 8, 2018 66NotchSwap Discussion starter Jan 11, 2010 · The GM HEI module is in the high-energy family with PerTronix Ignitor-II ("P-II"), DuraSpark-I (red grommet HE), Ford TFI, and other high-energy systems, when used with a suitable HE coil, and no pink resistor wire or coil ballast. For obvious reasons this needs to be fix. You could use the duraspark if the connections are intact. pnvlzlk qwcltl ndbrvnlg txmxtaheb qtukrt eqbwc wasj yulnzc jjbcr rddbr