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#1
11-28-2015, 09:51 AM
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Frame to Block Ground Location?
1970 GTO. Where's the typical frame to block ground location ?
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#2
11-29-2015, 07:02 PM
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Mine had an original braided ground wire attached to the firewall by a screw about 2 inches below the external voltage regulator. I don't recall where it was attached to the block (if at all) but I will attach to my aftermarket e-heads as there are several threaded holes available on the back of the head.
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#3
11-29-2015, 07:16 PM
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#4
11-29-2015, 09:07 PM
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if you are finding a ground on the frame it may be for the wheel houses...seems i remember something like that under the hood up close to the coresupport
__________________
Mark.. The Goat whisperer "I spent a lot of my money on booze, crazy women, and fast cars. The rest I just squandered." 
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#5
11-29-2015, 10:09 PM
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I added an extra one in my car , I bolted it to the head & then directly to the frame in front of the A-arm. I drilled & tapped a hole & used a black cable that was a #14 gauge wire with loops on both ends. I also have the originals that are bolted to the back of the head & has a screw that goes into the firewall. It's a bradded wire cable.
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#6
12-02-2015, 10:56 AM
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Here's a service bulletin for ground wire:
(not frame to block though) 
__________________
John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#7
12-02-2015, 12:04 PM
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On my '68, there is one from the front right inner fender to the frame horn. There is another from the rear of the right head to the firewall....that's the one referenced in the manual posted above...and I think there may be one other but I can't remember where.
I can vouch for the shift cable issue. Mine froze up on me while it was sitting in the garage for a long time. Got back in it and it wouldn't shift.
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Greg Reid Palmetto, Georgia |
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#8
12-09-2015, 10:03 PM
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Would this be the same for a 71
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71 GTO Convertible 455HO AT Canyon Copper |
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#9
12-12-2015, 12:14 AM
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i believe it is the same right up to 1972. I have mine in the same spots (as Greg noted) on my 1972.
I followed the 70 Lemans/GTO assembly manual, and recall those two places shown on the diagram in that guide. Of course it never hurts to have more ground straps. Just make sure it is metal to metal contact (no paint or primer). |
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