SAAC Forum

The Cars => 1966 Shelby GT350/GT350H => Topic started by: Karguy on February 08, 2020, 02:37:01 PM

Title: Coil mounting bracket for 6S281
Post by: Karguy on February 08, 2020, 02:37:01 PM
Need a little help from the Shelby gurus out there. Is this the correct coil bracket or 6S281? It was built at Ford in October 1965. All the pictures I have studied show the hole ( approx 5/16" ) in the front of the bracket, I'm not sure about the angle on the mounting face that attaches to the right head. Thanks, trying to get all these little details correct. Also, does anyone have an example of the correct bolt used to mount this to the head?
Much appreciated as always, Karl
Title: Re: Coil mounting bracket for 6S281
Post by: GT350Lad on February 08, 2020, 02:45:08 PM
Karl, I'll get some photos of mine to you today, but I know for a fact that I have no hole in the bracket

Cheers
Title: Re: Coil mounting bracket for 6S281
Post by: Karguy on February 08, 2020, 03:04:15 PM
That would be awesome Trent, I was looking back at some pictures I had collected of early 66 and 65 engine compartments. I would very much like to see which one your car has.
Title: Re: Coil mounting bracket for 6S281
Post by: Karguy on February 08, 2020, 03:22:16 PM
This is a vintage picture of a early 66 or 65 that I had saved, note the open letter valve covers. This particular car shows the hole in the bracket.
Title: Re: Coil mounting bracket for 6S281
Post by: acman63 on February 08, 2020, 03:40:49 PM
the hole in the bracket is very early 65 only
Title: Re: Coil mounting bracket for 6S281
Post by: texas swede on February 08, 2020, 03:41:08 PM
Only 65 Shelbys had this hole in the bracket. The car on the picture is 5S114 and picture is from Paris, France
Don't know for sure when the change over happened but probably around June-July 1965.
Also, the hole was needed on cars with the coil placed on the intake like 64 1/2 Mustangs. Ford probably had
left over which was used in 65.
Texas Swede
Title: Re: Coil mounting bracket for 6S281
Post by: Karguy on February 08, 2020, 03:46:13 PM
Thanks guys, great to know. Does anyone have a picture of the correct bolt for an early 66 coil bracket, the one from the bracket to the head?
Title: Re: Coil mounting bracket for 6S281
Post by: Karguy on February 08, 2020, 03:48:27 PM
Quote from: texas swede on February 08, 2020, 03:41:08 PM
Only 65 Shelbys had this hole in the bracket. The car on the picture is 5S114 and picture is from Paris, France
Don't know for sure when the change over happened but probably around June-July 1965.
Also, the hole was needed on cars with the coil placed on the intake like 64 1/2 Mustangs. Ford probably had
left over which was used in 65.
Texas Swede

Texas Swede, I have to know great one, how the heck did you know and recognize that particular picture? Impressive!
Title: Re: Coil mounting bracket for 6S281
Post by: texas swede on February 08, 2020, 04:42:19 PM
When I look at the bracket on your pictures another thing popped up in my brain.
Believe the bracket is for another car than a 65-66 Mustang. The reason is the cutoff of the corner.
Your one looks like it will point downward when mounted on the right (passenger) side head.
The one on my car point upward. See pictures.
Texas Swede
Title: Re: Coil mounting bracket for 6S281
Post by: Bob Gaines on February 08, 2020, 06:29:59 PM
Quote from: Karguy on February 08, 2020, 03:22:16 PM
This is a vintage picture of a early 66 or 65 that I had saved, note the open letter valve covers. This particular car shows the hole in the bracket.
Picture is of a 65. The black engine paint on the thermostat housing match's the shade of the alternator brackets next to it which we know are black. Dark blue would show lighter in shade next to the black brackets. This is the reason to come to that conclusion.The hole in the bracket is indexed to a bump on the early coil. that is the reason for the hole. Although I haven't seen those brackets on 66 before Bob Mannel's book indicates that they were used in 66 until they were used up. The difference in the angle on the bolt down portion of the bracket is the difference between mounted on a big block intake and when the coil is used on a smallblock intake.The intakes have a keyway so that the bracket can only mount one way. The angle of the cut is different on each. One fits a BB and the other fits SB. Again Bob Mannel's book indicates as it pertains to SB where the coil is mounted on the head he says both angles were used .I assume it was because the angle would not make a difference mounted flat on the head. I have a lot of respect for the information in his book. Rather then doubt his expertise I choose to error on the side of caution.
Title: Re: Coil mounting bracket for 6S281
Post by: Karguy on February 09, 2020, 09:55:47 AM
Thank you gentlemen, I greatly appreciate all the responses.
Title: Re: Coil mounting bracket for 6S281
Post by: gt350hr on February 10, 2020, 05:40:50 PM
     The original on the engine for 477 is a no hole "up" slant.
Title: Re: Coil mounting bracket for 6S281
Post by: EdwardGT350 on February 10, 2020, 06:52:16 PM
i have one of these brackets. what are they worth?
Title: Re: Coil mounting bracket for 6S281
Post by: acman63 on February 10, 2020, 07:40:58 PM
Quote from: texas swede on February 08, 2020, 03:41:08 PM
Only 65 Shelbys had this hole in the bracket. The car on the picture is 5S114 and picture is from Paris, France
Don't know for sure when the change over happened but probably around June-July 1965.
Also, the hole was needed on cars with the coil placed on the intake like 64 1/2 Mustangs. Ford probably had
left over which was used in 65.
Texas Swede

The coils had a small bump that went in that bracket  for alignment
Title: Re: Coil mounting bracket for 6S281
Post by: Karguy on February 10, 2020, 11:24:42 PM
I also found this coil bracket with the miscellaneous parts in 6S281. Does this look correct for my application? I have gone to the time and expense to locate an original date correct in the box FOMOCO coil, I certainly don't want to get the bracket wrong. What say the experts? Thanks again!
Title: Re: Coil mounting bracket for 6S281
Post by: Bob Gaines on February 10, 2020, 11:28:24 PM
Quote from: Karguy on February 10, 2020, 11:24:42 PM
I also found this coil bracket with the miscellaneous parts in 6S281. Does this look correct for my application? I have gone to the time and expense to locate an original date correct in the box FOMOCO coil, I certainly don't want to get the bracket wrong. What say the experts?
I wouldn't use it. The typical bracket is notched on one side only and not both sides like your one in the picture.
Title: Re: Coil mounting bracket for 6S281
Post by: Karguy on February 11, 2020, 01:04:51 AM
Thanks Bob, Notch on the bottom correct?
Title: Re: Coil mounting bracket for 6S281
Post by: GT350Lad on February 11, 2020, 03:51:07 AM
I'll get you a photo of the bracket bolt this week Karl. Unless I get beaten to it  :)
Title: Re: Coil mounting bracket for 6S281
Post by: Bob Gaines on February 11, 2020, 07:56:18 PM
Quote from: Karguy on February 11, 2020, 01:04:51 AM
Thanks Bob, Notch on the bottom correct?
Please reread reply #9 . The brackets are typically painted black until sometime in 67 when they transitioned to PO finish.
Title: Re: Coil mounting bracket for 6S281
Post by: J_Speegle on February 11, 2020, 11:46:29 PM
Noticed that Bob Manuals book suggest that he found both styles ( in fact he included the two styles with the holes in the brackets also) in his book.

No mention of the finishes and no mention of the bracket that I could find for in the 67 section

Respectfully have not found all original coil clamps/brackets painted on 66 289's  but that is just my observations. Bracket supplier and in turn finish should be an engine plant function so not car assembly plant specific
Title: Re: Coil mounting bracket for 6S281
Post by: Bob Gaines on February 12, 2020, 01:10:23 AM
Quote from: J_Speegle on February 11, 2020, 11:46:29 PM
Noticed that Bob Manuals book suggest that he found both styles ( in fact he included the two styles with the holes in the brackets also) in his book.

No mention of the finishes and no mention of the bracket that I could find for in the 67 section

Respectfully have not found all original coil clamps/brackets painted on 66 289's  but that is just my observations. Bracket supplier and in turn finish should be an engine plant function so not car assembly plant specific
Jeff, I am not sure why the criticism for my post ? The reason why I suggested that Karguy reread reply #9 was because I referenced that Bob Mannel book and how he suggested both style brackets were used and my own opinion of why which the Mannel book does not cover. I was hoping to short cut repeating that explanation by suggesting reread reply #9 but apparently I was unsuccessful since I am having to repeat it again for you. I also referenced the bracket with hole and its other observed usages in my other post (credited to Mannel) which you apparently didn't see otherwise you would not need to mention it as if I didn't.  You misquoted me given I was the only one mentioning finish, I did not write "ALL" as you wrote.  I did write that the painted bracket (65/66) was typical which does not rule out the occasional unpainted which is less typical. I do have my own observations from 30 +years of research/observation, the predominate change over in 67 is one of those observations which Mannel did not cover in his book. I reference information from Mannels book but when I do give him credit for such. Respectfully I hope I have explained why I wondered about your criticism to my posts given my pointing out the content that answer the difficulties you have with them. You apparently didn't read them regardless of if you agree with my observations or not. Sorry for the long reply but it bothered me enough to write.
Title: Re: Coil mounting bracket for 6S281
Post by: J_Speegle on February 12, 2020, 04:05:35 AM
Sorry you saw my post as critical of yours – was not the intent. Reading the first two lines I simple wrote that I had read/noticed the same as you. I could have added (didn't want to edit it now since you had taken umbrage with the post) I found it interesting that he did not include finishes and left the subject out in the 67 sections.
As for the last sentence I guess I've seen more of the phosphate in comparison to the painted brackets and simple wanted to offer that opinion in a respectful way.

Guess either or both of us could have chosen to do this in a PM and will likely choose that path next time so that the written word and my poor writing skills does not repeat in sort of misunderstanding. Time to get some sleep. 
Title: Re: Coil mounting bracket for 6S281
Post by: gt350hr on February 12, 2020, 01:16:23 PM
     I see a group hug coming! Seriously here is another example of the "challenge" this medium presents. If these two LONG TIME friends were talking in person , there would be no confusion as to intent in the exchange I guarantee you.
Title: Re: Coil mounting bracket for 6S281
Post by: Bob Gaines on February 12, 2020, 01:33:18 PM
Quote from: J_Speegle on February 12, 2020, 04:05:35 AM
Sorry you saw my post as critical of yours – was not the intent. Reading the first two lines I simple wrote that I had read/noticed the same as you. I could have added (didn't want to edit it now since you had taken umbrage with the post) I found it interesting that he did not include finishes and left the subject out in the 67 sections.
As for the last sentence I guess I've seen more of the phosphate in comparison to the painted brackets and simple wanted to offer that opinion in a respectful way.

Guess either or both of us could have chosen to do this in a PM and will likely choose that path next time so that the written word and my poor writing skills does not repeat in sort of misunderstanding. Time to get some sleep.
I Appreciate the reply .Yes PM's would be better. It's all good.
Title: Re: Coil mounting bracket for 6S281
Post by: CharlesTurner on February 12, 2020, 03:28:45 PM
When an original coil with the bump is installed in an indexed bracket, on a 65 alternator V8, the coil will sit too low and does match period photos we have.

It was important for coils with the bump and indexed brackets when installed on the intake of generator V8 Mustangs (and probably other Fords). 
Title: Re: Coil mounting bracket for 6S281
Post by: Dan Case on February 12, 2020, 07:13:00 PM
Quote from: CharlesTurner on February 12, 2020, 03:28:45 PM
When an original coil with the bump is installed in an indexed bracket, on a 65 alternator V8, the coil will sit too low and does match period photos we have.

It was important for coils with the bump and indexed brackets when installed on the intake of generator V8 Mustangs (and probably other Fords).

Here's a TYPICAL style of installation for 1963-64 Fairlanes with generator and 1963-65 Cobras with either generator (early) or alternator (late).

(http://www.saacforum.com/gallery/274-120220191039.jpeg)
Title: Re: Coil mounting bracket for 6S281
Post by: Rocket on February 14, 2020, 03:22:49 PM
Looked at motor for 6S550, and it does not have the index hole, and has the cut off corner at the bottom. No reason that it's not the original that came on the car.   Ron
Title: Re: Coil mounting bracket for 6S281
Post by: Karguy on February 15, 2020, 10:27:27 AM
Thank you Ron, greatly appreciate the information!