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The question, initially posted May 23, 2005, was:
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What did you get done on your Bolt today????

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Re: Analog Clock Chevy C10/C60 - 1966
buoymaker #1431984 Wed Dec 01 2021 09:07 PM
Joined: Sep 2011
Posts: 1,102
Originally Posted by buoymaker
Original tachometer. Also hard to find.

I have one of those, haven't install it.
Could you get it with 6 cyl or only 8?

1960 Chevy C10 driver 261 T5 3.73 dana 44
1949 GMC 250 project in waiting
1960 C60 pasture art
Retired GM dealer tech. 1980 - 2022
Re: Analog Clock Chevy C10/C60 - 1966
Dixon #1432012 Thu Dec 02 2021 01:07 AM
Joined: Mar 2010
Posts: 1,077
One question leads to several questions.

The original tachometer option was mostly used on big trucks.
There are reproduction tachometers (V8 only) available at classic Chevrolet truck websites.

GM part numbers can be found at:
Parts and Accessories Catalog P&A 31 May 1966
Section 9.750 Tachometer Head-Head Assembly-Harness Assembly and Parts

Check the following yourself in case there is an error:
GM #3852111 for 6-cyl engines.
GM #3839947 for V8 engines without transistor ignition.
GM #3885480 for V8 engines with transistor ignition.


Reproduction tachometer - Ignition contacts and/or HEI

1960-62 Tachometers required transmitters

Tachometer adapter, tach adapt

I'm signing off on this topic.

"Adding CFM to a truck will only help at engine speeds you don't want to use."
"I found there was nothing to gain beyond 400 CFM."
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