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CChevyGuyZZ572 replied to the thread Tach/fuel combo.something like this. It would be perfect for what I'm using it for. The Cummins revs to 3k rpm max. Modifying the fuel pump you can...
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CChevyGuyZZ572 replied to the thread Tach/fuel combo.That makes more sense. The 4k tachometer was probably used in those bigger trucks with the 6.2 or 6.5 detroit.
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CI am doing a 12v cummins swap in an 84 k20. I wanted to leave the 4 little gauges in the dash untouched but I also wanted a tachometer...
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