The Stovebolt Site Forums The Parking Lot '60-'66 Trucks Factory tach- driven how?

Hey guys, Looking at a gauge cluster with a factory tach in it. Says its coming out of a 63 C50 truck....does anyone know if it is driven off a gear like the speedometer or otherwise. thanks

tb63chevy

just look at the back of the tach and see if it has a speedometer type connection or terminals for wiring or a couple of wires coming out of it. if it is an ebay job then just ask the seller what it is as he is the one who should have it in his possesion
ron

the factory tachs are operated electricly by a wire from coil like aftermarkets i believe. i have removed a couple and you need the original box under the pass dash with 4 terminals, i think. it's not gear driven.

I would find it od to se a mechanically driven tach in a truck. Those were more of a Corvette thing. However, if it were a mechanical tach (unlikely), it would have been driven off the distributor, which is specific to a tachometer drive. To my knowledge, there are only 2 tach drive distributors, both for Corvette use. 1 is the regular tach drive,used in both small and big block engines, and had both a points and electronic breakerless (late '60s RPO K66 option) operation, depending on application. The other one was only used from '57-'65, and was the Feul Injection distributor. It had, in addition to the tach drive, a second drive that ran the high pressure feul pump for the Ramjet Feul Injection. Those were matched to the manifold, and serial nubered with them. Very rare, and very pricey if you were to find one.

Did they also have some kind of transmitter that hooked up to them, suntach eb-7

Thank you guys!!! I really appreciate all the info!! this website has been invaluable to me so far!!

I believe the 65-66 tachs can be used without the transmitter, as mine is. No one makes batteries for the old style transmitters, so you'd have to pay over $150 to have your tach reworked. If there's just the two wiring connections on the back of your tach, you should be OK.

50 series truck is a medium duty truck and some applications would or could have had a mechanical driven tach depending on eng
ron

65 -66 do not use transmitters but the 60-63 do and batteries are available for them

I have a tach out of a 64 c50 truck in my 65 c10 , i also pulled it out of the 348 powered truck and it just unplugged from the distributor . It only goes up to 5 grand but works just fine with the hei that's in the 65 now ! if you want i think i still have some pics ???

i would like to see pics of that. if its available. thanks

batteries r us