66 Caprice negative battery cable bolt size? - Impala Tech
Electrical & Wiring Troubleshooting electrical problems

 
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post #1 of 3 (permalink) Old 05-24-2020, 02:26 PM Thread Starter
 
 
Join Date: May 2020
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66 Caprice negative battery cable bolt size?

Hello, I need to hook up my negative battery cable to the engine block but I have lost the original bolt awhile back. Anyone know what size the bolt is that hold the negative battery cable to engine block? I had some 9/16 bolts laying around, which was too small. Thanks!
Chris Yaeger is offline  
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post #2 of 3 (permalink) Old 05-24-2020, 06:50 PM
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It should be a 3/8th inch course thread (16 threads per inch) with a 9/16 hex head cap. Don't know how long as it will depend upon where you are attaching the ground cable to the engine (scrape off any shinny new paint under the cable).

The other end is a 1/4-20 with a square head to fit in a recess in the batter terminal.

Big Dave
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post #3 of 3 (permalink) Old 05-24-2020, 07:23 PM Thread Starter
 
 
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Perfect! Thank you.
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