factory tach

[clemdaddy]

do you guys know a part number or some way to tell if its a 6 or V8 tach?
i put a dwell to the engine coil and its pulsing ok, reads right. I've got a tach in a 65 cluster and one in a 63 and they both read very low rpm's.

[theastronaut]

Originally Posted by clemdaddy

do you guys know a part number or some way to tell if its a 6 or V8 tach?
i put a dwell to the engine coil and its pulsing ok, reads right. I've got a tach in a 65 cluster and one in a 63 and they both read very low rpm's.

The decal on the back side of the tach will tell if its 6 or 8, at least on the 63-66 tachs. You might have to take the tach off of the backing plate to see all of the decal.