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Engine to chassis ground connection?

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Old Apr 28, 2006 | 03:49 PM
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Default Engine to chassis ground connection?

Where is the engine to chassis ground connection supposed to be? I don't have a specific ground connection now. I bought a cable from Zip. It's about a foot long. I'm still trying to solve my battery/alternator/starter/grounding problem.
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Old Apr 28, 2006 | 03:56 PM
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From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
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i use one that is longer then that and i ground a clean spot on the engine block just above the where the starter is on a threaded Hole located in the middle of the block below the head, connected one end there and then it runs to the engine mounting horn and is mounted on the inside of that
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Old Apr 28, 2006 | 04:53 PM
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Bob - Where is your connection on the chassis? "Engine mounting horn" is a new one on me.
Thanks
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Old Apr 28, 2006 | 05:15 PM
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Originally Posted by BKbroiler
Bob - Where is your connection on the chassis? "Engine mounting horn" is a new one on me.
Thanks
That's the unit that the motor mount bolts to!

I used a hole on the front of the engine or head (don't remember) that was already threaded (probably an A/C bracket hole) and the other end as Bob stated.

Last edited by pws69; Apr 28, 2006 at 05:20 PM.
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Old Apr 28, 2006 | 05:49 PM
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Originally Posted by pws69
That's the unit that the motor mount bolts to!

I used a hole on the front of the engine or head (don't remember) that was already threaded (probably an A/C bracket hole) and the other end as Bob stated.
On my car, the motor mount bolts to a support/bracket on the frame. That bracket is welded to the frame. No place to attach a bolt.
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Old Apr 28, 2006 | 07:52 PM
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Mine runs from the middle of the passenger side block to under the passenger engine mount. There were bolts in both places.
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Old Apr 28, 2006 | 08:40 PM
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I'm thinking of drilling a hole in the chassis near the motor mount and bolting the ground cable there and on the block at the starter support bracket bolt hole. Any reason why this shouldn't work?
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Old Apr 28, 2006 | 08:42 PM
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Nope, but it won't pass an NCRS inspection.
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Old Apr 28, 2006 | 08:51 PM
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on my '78, the ground cable bolts to the block on the same bolt that the top of the starter motor brace uses and than bolts to the frame on the motor mount frame flange (engine mounting horn).
don't forget to use a star washer when you attach it to the frame so you get a good ground connection thru the paint on the frame.
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Old Apr 28, 2006 | 09:04 PM
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OK - so I will drill a hole.

Jughead - When you look under my hood, I'm definitely in the Not Correctly Restored category.

Thanks guys
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Old Apr 28, 2006 | 09:22 PM
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From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
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Originally Posted by BKbroiler
On my car, the motor mount bolts to a support/bracket on the frame. That bracket is welded to the frame. No place to attach a bolt.

thats it, with a hole drilled in it....if you look close you can see the hex head bolt on the forward side....and thats the ground wire hanging down
[IMG][/IMG]

Last edited by bobs77vet; Apr 28, 2006 at 09:26 PM.
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Old Apr 28, 2006 | 10:46 PM
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Originally Posted by BKbroiler
I'm thinking of drilling a hole in the chassis near the motor mount and bolting the ground cable there and on the block at the starter support bracket bolt hole. Any reason why this shouldn't work?
Kinda like this? Factory correct. (Bobs77, couldn't see your pics)




Mike
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Old Apr 28, 2006 | 10:55 PM
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Bob & KapsSA - Thanks for the pics. I will install the cable tomorrow.
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