whats wrong with my factory tach? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

matt_field · 05-03-2004, 07:05 PM

well i just bought a tach from a guy in town, i think it came out of a bigger truck, it has the vaccum and all that. well i got it hooked up great and i went for a ride yesterday and the thing reads high, ideling is good i think but doing 60mph it reads 4500, im thinking the truck is actually like 3200 or 3500, anyways could this be a 6 cyl tach? how do i know? and my ignition on my truck is a mallory unilite with a mallory coil could this be the problem if the tach is probably set up to be with points? well itd be great if someone could help thanks

Matt

05-03-2004, 07:05 PM	#1
matt_field Registered User Join Date: Apr 2001 Location: Detroit Lakes, Minnesota Posts: 885	whats wrong with my factory tach? well i just bought a tach from a guy in town, i think it came out of a bigger truck, it has the vaccum and all that. well i got it hooked up great and i went for a ride yesterday and the thing reads high, ideling is good i think but doing 60mph it reads 4500, im thinking the truck is actually like 3200 or 3500, anyways could this be a 6 cyl tach? how do i know? and my ignition on my truck is a mallory unilite with a mallory coil could this be the problem if the tach is probably set up to be with points? well itd be great if someone could help thanks Matt __________________ 1971 k5 blazer 80k mike survivor 1972 3/4 ton 4wd Cummins 12v 1967 swb 2wd 427bbc 1968 4wd shortbox 1971 Cheyenne swb k10 unrestored 1971 Cheyenne super 40k 402bb survivor 1967 Chevy k10 (first truck) 1968 L78 camaro survivor 18k miles 1969 z28 survivor 60k miles 1969 z28 survivor 39k miles 1969 z28 rs survivor 80k miles



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