Author Topic: Ground Strap Question  (Read 43130 times)

srode

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Ground Strap Question
« on: January 08, 2012, 01:34:40 PM »
Is there a 4th ground strap used on V8 cars?  I'm looking at the picture in the lower right corner of UPC U63 A7 and for the life of me can't figure out where that is supposed to be on the car or if it applies just to 6 cyllinders or V8s as well. 
Steve - 02D Z11 and a Plain Jane hardtop

bertfam

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Re: Ground Strap Question
« Reply #1 on: January 08, 2012, 05:55:49 PM »
See my reply number 28 below for the "correct" configurations.

Ed
« Last Edit: January 09, 2012, 01:48:36 AM by Ed Bertrand »

tmodel66

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Re: Ground Strap Question
« Reply #2 on: January 08, 2012, 06:08:20 PM »
We found what was believed to be a piece of a ground strap on the front right side inner fender wheel well. Looking at the AIM it looks like it goes from there to the frame which has a corresponding hole.
Daniel  
'69 SS 350/4 speed  Fathom Green--POP

srode

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Re: Ground Strap Question
« Reply #3 on: January 08, 2012, 06:27:47 PM »
It's a little confusing I'll admit, but look at U63 sheet A6 for the V8 engine to body grounds (2 straps), and U63 sheet A5 for the body to subframe ground (1 strap).

Ed

Thanks for clearing it up Ed, that's what I thought was correct.   I don't remember seeing any holes in the inner fender on mine Daniel, but I'll look again.  
« Last Edit: January 08, 2012, 08:01:01 PM by Ed Bertrand »
Steve - 02D Z11 and a Plain Jane hardtop

Mike S

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Re: Ground Strap Question
« Reply #4 on: January 08, 2012, 06:37:05 PM »
Hello,

    What year are you talking about?
 I just checked my 2 67's and they both have only 3 straps. Two from the valve covers to firewall and one on the lower right side between the body and frame. I can't locate a 4th strap.

Mike
67 04B LOS SS/RS L35 Hardtop - Original w/UOIT
67 05B NOR SS/RS L35 Convertible - Restored

srode

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Re: Ground Strap Question
« Reply #5 on: January 08, 2012, 06:44:20 PM »
I was asking about a 1969 and can only find 3 as well which matches' Ed's explanation. 
Steve - 02D Z11 and a Plain Jane hardtop

Mike S

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Re: Ground Strap Question
« Reply #6 on: January 08, 2012, 07:06:57 PM »
 That's interesting...I would have sworn Ed stated there were 4 which is why I checked my cars.
Ed, did you re-edit your reply by chance?

Mike
67 04B LOS SS/RS L35 Hardtop - Original w/UOIT
67 05B NOR SS/RS L35 Convertible - Restored

sixt9x33rs

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Re: Ground Strap Question
« Reply #7 on: January 08, 2012, 07:10:11 PM »
There are 4 two connected to the valve covers and fire wall, one connected below the heater box from the frame to the firewall and the last one connected to the front of the frame to the front of the inner fender pass side.
'69 RS Z/28 65B, 711 Flat hood no spoiler, endura, 4:10 43K miles
69 X77 Z/28 69 69 711 Original Paint Unrestored (Sold)
'69 X66 Convertible 69B 712 auto, (Sold) 44K miles

big iron

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Re: Ground Strap Question
« Reply #8 on: January 08, 2012, 07:27:11 PM »
All the v8 first gen radio ground straps (3) are grounded the same, including w/ac. The 67 AIM U63 A6,A7 gives a better explanation but the 69 AIM U63 A7 shows better detail of the the 6cyl. ground straps (2).
Bob

bertfam

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Re: Ground Strap Question
« Reply #9 on: January 08, 2012, 07:51:13 PM »
Yes, I did edit my first reply because I had it wrong. There were a few changes made along the way and it gets a little confusing! I even got THIS reply wrong, so I'm removing it also.

Please see reply (number 28) below for the "correct" (well, correct per the respective AIM's) configurations.

Ed
« Last Edit: January 09, 2012, 01:49:40 AM by Ed Bertrand »

srode

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Re: Ground Strap Question
« Reply #10 on: January 08, 2012, 07:55:02 PM »
Ok, I had to go look at both of my cars - The picture is from an unrestored car that was originally a 307 3 speed stick.  You can see what looks like a ground strap end bolted to the frame.   I don't see any evidence of this strap on my Pace Car, no hole in the frame however it might be there and behind the headlight actuator cover.   I don't see a hole in the inner fender well for this to be grounded to but it could be there and I just don't know exactly where to look.   You can see the bumper extension bolted onto the frame as a reference for location.

Steve - 02D Z11 and a Plain Jane hardtop

big iron

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Re: Ground Strap Question
« Reply #11 on: January 08, 2012, 08:31:40 PM »
Steve,
Look at 69 AIM U63 A7 it gives the exact hole piercing location on the fender-skirt.
The 67 Aim shows the frame hole as exhisting. Just looked at my 67, no holes.
Bob

srode

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Re: Ground Strap Question
« Reply #12 on: January 08, 2012, 08:43:49 PM »
But should this even be here being this is a V8 car?  I'm confused.   I have 2 different v8 cars with apparently different straps, but came with AM radios - maybe the hard top was wrong from the factory, I bought it from the original owner in 1979, so to my knowledge never restored and original sub frame. 
Steve - 02D Z11 and a Plain Jane hardtop

big iron

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Re: Ground Strap Question
« Reply #13 on: January 08, 2012, 09:02:39 PM »
I think the strap on the fender-skirt is only for the L6. The 67 AIM U63 A7 revision 6 indicates that it is for the L6 only. The 68 AIM U63 A7 shows revision 2 but there is no picture to show what was revised, nor does it say that the V8 was part of the revision. The 69 AIM U63 A7 does not show this view  as a revision so I believe it to be the same view as should have been in the 68 AIM. I believe that the lack of engine identification in the 68 and 69 AIM has lead to confusion

Steve Shauger

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Re: Ground Strap Question
« Reply #14 on: January 08, 2012, 09:31:03 PM »
What I have seen 1969 V8's is four straps. Two straps from firewall to each valve cover. The third  from firewall to subframe passenger side (below heater box). The fourth is from the inner fender to the subframe on passenger side forward, just below the battery area.
Steve Shauger
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