66 Impala Tachometer Identification

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**SuperNovaSS** · #2 10-26-2016, 04:48 AM

Nevermind, I found this with a little Google searching:

Here's the break-down on 1966 tachometers:
6412548 - 6000 rpm, 5k red line, used with 283/195hp, 283/220hp, 327/275hp,
396/325hp
6412571 - 6000 rpm, 5k red line, used with 396/325hp equipped with RPO K66
Transistor Ignition
6412983 - 7000 rpm, 5500 red line, used with 427/390hp
6412572 - 7000 rpm, 6k red line, used with 427/425hp equipped with RPO K66
Transistor Ignition and also 427/390hp with RPO K66, 1st design
6412984 - 7000 rpm, 5500 red line, used with 427/390hp equipped with RPO K66
Transistor Ignition, 2nd design
6412549 - 7000 rpm, 6k red line, used with 427/425hp

It must be 6412549. Now I have to decide if I want to risk dipping the face in evaporust :-)

Thanks,

Jason

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