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Hei conversion for 74

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Old 01-03-2016, 02:57 PM
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Al2844
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Default Hei conversion for 74

Anyone have experience with: top performance 6515-r distributor, MSD 31763 spark plug wires, Ngk yr51x plugs . I'm ready to convert next week. Any tips or concerns appreciated
Old 01-03-2016, 07:36 PM
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wilcar
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Why not keep your factory points distributor and have it rebuilt/recurved? Most of the cheap hei distributors are made in china and some use some marginal ignition modules so carry a spare! Points will rarely leave you stranded and the smaller caps look better!!
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Old 01-03-2016, 07:43 PM
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hugie82
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Don't use the old distributor power wire. It's a 6volt resistor wire for points only. You have to source a good 12v ignition key wire.
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Old 01-04-2016, 04:05 AM
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96 lt-4
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I like an HEI over points myself.However for a stock/mild build you can also convert it in your stock dist with a pertronix kit and use good plugs,wires,cap,and rotor.
Old 01-04-2016, 10:13 AM
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BLUE1972
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You will need a key switched 12volt power source. Most use the yellow wire on the wiper motor as the source.
The points use a resistor and approximately 7-9 volts.

I went with a Tachometer -drive Heli in my 71 as an easy setup after the rebuild. I've run it all summer and drove the car a lot. No issues. I tapped into the wiper feed.

I converted my 72 to a module in the stock distributor over 10 years ago and set the rev limiter at 5000 RPM, it's number matching with 22000 mikes so it doesn't get out much - just runs better and you can't tell it's converted. I can always drop the points back in..
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Last edited by BLUE1972; 01-04-2016 at 10:19 AM.

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