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Re: Tachometer off ls conversion 1971 c10
The only thing that worked with mine was to use my local tuner to "guess and check" using different variables in EFI live/HP Tuners, mentioning that it wasnt always an exact science depending on the tach, year of PCM, etc. Im sure you could find someone locally on craigslist or this board.
What tach are you running? Autometer has switches for 4/6/8 modes. It may be worth trying them
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RIP EastSideLowLife
'72 C20 SWB convert. 5 lug, LS1/4l60e
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