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- - Factory tach underhood pics (https://67-72chevytrucks.com/vboard/showthread.php?t=747779)

bignassty

10-03-2017 10:56 PM

Factory tach underhood pics

Could someone with a factory tach setup please post some pics of the engine bay where the tach signal wire comes through the firewall? I'm looking to add the tach to my truck and have the factory harness with grommet and just want to know where to drill the hole. Thanks for any help

bignassty

10-04-2017 04:54 PM

Re: Factory tach underhood pics

My truck is a 77 by the way

IllinoisK30

10-04-2017 06:47 PM

1 Attachment(s)

Quote:

Originally Posted by bignassty (Post 8053911)

My truck is a 77 by the way

I'm new to the sight and need to properly introduce myself on the welcome page but thought I would try to help. This is a picture of my 1980 Chevy with factory tach, not sure if it's the same location as a '77. It's the yellow wire. Hopefully I can get this photo to load.
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bignassty

10-04-2017 11:53 PM

Re: Factory tach underhood pics

Hi Matt! It's Aaron. Thanks for the reply.

gmachinz

10-05-2017 07:07 PM

Re: Factory tach underhood pics

That above pic is correct indeed for 73-80 trucks. 1981-up the tach wire pops out near the accelerator cable. I added one to my 77 High Sierra truck build but I also added the tach filter too.

bignassty

10-07-2017 07:08 PM

Re: Factory tach underhood pics

Thank you for the replies IllinoisK30 and gmachinz. I appreciate the help!

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