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1989 Chevy 1 ton,4x4,454/7.4L,HEI specifics


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Old 12-31-2016, 07:54 PM   #1
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Looking to learn anyones experiences with an HEI (high electrical ignition) sytem. best spark plug wires. which spark plugs work best with the HEI system. trouble shootiing components-the module,pickup coil,the external coil,etc. If you're williing to share your experiences,it would be most appreciated. thank you.

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Old 01-03-2017, 12:33 AM   #2
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Never had any issues with hei, used many types of plugs wires. Currently i have the msd hei kit on my 79 Monte, bwd plugs and delco plugs. Testing module and pickup are well documented in a good manual.

For gm I have used both delco and ngk. Do not use bosch and autolight plugs, i have personally had issues with those.

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