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1987 Quick question,where do exactly is exactly attached ?

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Old Jul 14, 2010 | 11:32 PM
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Default 1987 Quick question,where do exactly is exactly attached ?

i pulled it off like 10 months ago, i can't remember where my Tach filter was attached to ...block ? firewall ? head ? i can't remember !!!
I have the new one ready to go but i didn't want to bolt it to the back of the head since its aluminum might not be a good ground ..or maybe it will work but i would like to bolt it to its original location.
Thanks !!!
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Old Jul 14, 2010 | 11:42 PM
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I am pretty sure it is held on by one of the top bell housing bolts. I purchased a used one but am waiting to install it when I do my manifold upgrade next week.
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Old Jul 14, 2010 | 11:44 PM
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i was looking on the bellhousing as well,couldn't find any,im sure mine was not attached there
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Old Jul 16, 2010 | 06:29 AM
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It was on the Driver Side upper bellhousing on my aluminum head '86.
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Old Jul 16, 2010 | 08:23 AM
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Sammy, Mine was on the upper center bolt of the bellhousing like mentioned above. The new one I have now is a different design and just hangs free and is bolted to nothing at all...WW

Last edited by WW7; Jul 16, 2010 at 08:27 AM.
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Old Jul 16, 2010 | 08:37 AM
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Originally Posted by Calderone
i didn't want to bolt it to the back of the head since its aluminum might not be a good ground ..or maybe it will work .
Have had mine on last LH intake manifold bolt for years ( because I couldn't be bothered accessing the bellhousing bolt ) ; no problems

Last edited by rodj; Jul 16, 2010 at 08:42 AM.
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Old Jul 16, 2010 | 09:40 AM
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thanks guys !!!
i just installed it yesterday bolted to the back of the drivers side head
i really like Ray's location i guess i will move it there !
Thanks once again !
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Old Jul 16, 2010 | 10:08 AM
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Originally Posted by WW7
Sammy, Mine was on the upper center bolt of the bellhousing like mentioned above. The new one I have now is a different design and just hangs free and is bolted to nothing at all...WW
Mine is a hanger too. It doesn't really matter what it attaches to, or even that it is attached. The bracket only holds the filter in place. It is not a ground.
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Old Jul 16, 2010 | 02:33 PM
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Mine is a hanger too. It doesn't really matter what it attaches to, or even that it is attached. The bracket only holds the filter in place. It is not a ground.
On my '88 the bracket IS an electrical ground.

After the recent engine rebuild the installer neglected to install said filter and my tach readings were way off till I clipped a jumper wire between the mounting tab and an engine ground point.
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Old Jul 16, 2010 | 08:33 PM
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Originally Posted by 65Z01
After the recent engine rebuild the installer neglected to install said filter and my tach readings were way off till I clipped a jumper wire between the mounting tab and an engine ground point.

Same on my '87; forgot to bolt it down once and tacho was screwy
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