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Old May 22nd, 2017, 05:43 AM
BobBray BobBray is offline
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Default Re: HEI vs Pertronic pointless ignition systems

I used to work on a lot of late 70's- up GMC 6500's with 366's and 427's in them, all HEI. Very little ignition problems, but when they did happen it was most often carbon tracking on the cap and rotor. Wouldn't leave you stranded but would miss and backfire a lot.

No question HEI delivers a hotter spark than Pertronix, even if you use their 'Flamethrower' coil. I went with Pertronix for the stock appearance and I was concerned of clearance issues with the stock air cleaner. Never measured, will HEI work with the stock air cleaner?
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