SAAC Forum

The Cars => 1967 Shelby GT350/500 => Topic started by: Shelby_r_b on June 14, 2019, 12:48:41 PM

Title: 1967 Shelby GT350 Coil Placement
Post by: Shelby_r_b on June 14, 2019, 12:48:41 PM
Hello!

Typically, it's easy to find pictures / get guidance as to the proper location of the coil for a 1967 Shelby GT350.  However, given that my car (#2666) has AC and the Thermactor system...well, I'm stumped.

Could someone please share where the coil should be located under the hood?  Attached is a picture I took of the car when I first inspected it, and I'm not sure that this is the correct coil location.

Thanks!  :D
Title: Re: 1967 Shelby GT350 Coil Placement
Post by: Harris Speedster on June 14, 2019, 01:15:31 PM
Quite an unusual engine bay !

I once had a 65 Shelby that had A/C installed, plus more.
Looks pretty original under the hood, BUT, that does not look like an autolite coil?
Not sure the where the coil would mount,?

Somebody herein the forums will know.
Title: Re: 1967 Shelby GT350 Coil Placement
Post by: 557 on June 14, 2019, 02:10:50 PM
Looks "rural" under there.Anything living in there when you got it? ;D
Title: Re: 1967 Shelby GT350 Coil Placement
Post by: Richstang on June 14, 2019, 02:19:01 PM
Only about 15 GT350s were built with A/C and emissions, so finding an original car will be difficult.
Of those 7 were built within 3 days of yours at San Jose (all in DSO 2599)
67213F2A02466    5/15/67
67213F8A02467    5/15/67
67213F5A02545    5/16/67
67213F7A02547    5/16/67
67213F0A02663    5/17/67
67213F4A02664    5/16/67
67213F9A02666    5/15/67

Photos of #02545 were found on the Barrett-Jackson website back in 2012 and noted as a SAAC div II restoration.
https://www.barrett-jackson.com/Events/Event/Details/1967-SHELBY-GT350-FASTBACK-115946
Normally I would follow protocalls and tell you not to copy another car but this car was built one day later at San Jose and may be correct.


A post on forum 1.0 noted when a GT350 was smog equipped the coil would be mounted on the intake.
I don't have any notes regarding what the location was when a car was smog and A/C equipped.
Unless one of our experts chimes in here, I would not move the location for now, but you might want to look closer at the intake for mounting threads.
Title: Re: 1967 Shelby GT350 Coil Placement
Post by: JD on June 14, 2019, 03:25:14 PM
Is/was #2545 the car that won Gold (?) at the last SAAC held at VIR?  If so I may have some photos at my office.  will look later.

Edit: found my photo of #2545 SAAC 36, and a car that was at SAAC 35, thermactor with air.  Both have coils located as Bob states in his reply below
Title: Re: 1967 Shelby GT350 Coil Placement
Post by: Richstang on June 14, 2019, 03:58:38 PM
Quote from: JD on June 14, 2019, 03:25:14 PM
Is/was #2545 the car that won Gold (?) at the last SAAC held at VIR?  If so I may have some photos at my office.  will look later.

Yes JD,
Checking my folder from SAAC 36 at VIR, it appears it won Gold in Division II at that convention.
Title: Re: 1967 Shelby GT350 Coil Placement
Post by: Bob Gaines on June 14, 2019, 06:07:55 PM
The coil goes on the intake on a smog equipped GT350 regardless of if AC or not. It is mounted in a special added threaded hole for that purpose extra on the S7MS and the S2MS large number intake.
Title: Re: 1967 Shelby GT350 Coil Placement
Post by: Harris Speedster on June 15, 2019, 09:25:58 AM
Rich, Bob or JD
I am somewhat curious about the vinyl pull straps they have on the picture posted.

Ford used a real slim aluminum pull through band for many years ,and or rubber pull through straps >>to strap lines on a tie area.
Could these have been on the car when it left Ford, and then when Shelby worked his magic, they put the pull plastic straps on ?
Respectfully submitted,
john
Title: Re: 1967 Shelby GT350 Coil Placement
Post by: Bob Gaines on June 15, 2019, 10:50:07 AM
Quote from: Harris Speedster on June 15, 2019, 09:25:58 AM
Rich, Bob or JD
I am somewhat curious about the vinyl pull straps they have on the picture posted.

Ford used a real slim aluminum pull through band for many years ,and or rubber pull through straps >>to strap lines on a tie area.
Could these have been on the car when it left Ford, and then when Shelby worked his magic, they put the pull plastic straps on ?
Respectfully submitted,
john
You may be referring to the rubber straps Ford added to the AC lines to hold the hoses to the export brace . AMK sells them . Always get extra because the AMK ones break more easily then the factory ones which are now obsolete.
Title: Re: 1967 Shelby GT350 Coil Placement
Post by: Harris Speedster on June 15, 2019, 02:53:26 PM
I kind of thought that, but hardly do you ever see one with ac.
So, you think that shelby added the vinyl pulls like in the picture.
BTW, that does look like a mighty fine >> high point restoration.
Nice rare car
Thanks
john
Title: Re: 1967 Shelby GT350 Coil Placement
Post by: 557 on June 15, 2019, 05:00:42 PM
Just curious as I've never seen one, how effective was /is the A/C in these cars?
Title: Re: 1967 Shelby GT350 Coil Placement
Post by: Shelby_r_b on June 16, 2019, 06:47:26 PM
Quote from: 557 on June 14, 2019, 02:10:50 PM
Looks "rural" under there.Anything living in there when you got it? ;D

LOL! Luckily, the rat traps that were located on the ground under the car seemed to do their job 😉.
Title: Re: 1967 Shelby GT350 Coil Placement
Post by: Shelby_r_b on June 16, 2019, 06:58:41 PM
Many, many thanks to Rich, JD and Bob! I'll look for the threaded area on the intake for the coil mount. 👍🏻

I, too, am curious as to how good the AC system is on a 67 GT350. Please advise, as I'd like to know how good or not good it can be since mine still needs a charge.

Another question: I noticed that the top of the smog filter on the pictured cars is way different than the one on my car. It looks like the cap should have a long tube and a hose connection to a valve on the passenger side of the firewall (which my car has the valve and a piece of cut hose that sound be coming from the top of the smog filter). Here's the question:  do I need to do anything else to the smog system to render it inoperable, yet keep it mounted to the engine, given the filter is not attached to the aforementioned valve? Also, is it hard to find the correct smog filter cap?

Thanks!
Title: Re: 1967 Shelby GT350 Coil Placement
Post by: Bob Gaines on June 16, 2019, 09:44:45 PM
Quote from: 557 on June 15, 2019, 05:00:42 PM
Just curious as I've never seen one, how effective was /is the A/C in these cars?
The A/C worked very effective when working properly.
Title: Re: 1967 Shelby GT350 Coil Placement
Post by: J_Speegle on June 16, 2019, 09:57:41 PM
Quote from: Shelby_r_b on June 16, 2019, 06:58:41 PM
Another question: I noticed that the top of the smog filter on the pictured cars is way different than the one on my car. It looks like the cap should have a long tube and a hose connection to a valve on the passenger side of the firewall (which my car has the valve and a piece of cut hose that sound be coming from the top of the smog filter).

Not all the tops used for the top of the thermactor filter canister had the snorkel - the vast majority of originals I've seen didn't have them - only the elbow. Would guess that many we see today have systems built from parts collected rather than ones that came with the car originally. There is a possibility that there was at least one other configuration but until I find another car that matches than example would only confuse the subject and its tough enough all ready :)

The hose from the top and bottom go to the smog pump and to the valve


Quote from: Shelby_r_b on June 16, 2019, 06:58:41 PMAlso, is it hard to find the correct smog filter cap?

Either of the versions are a pain to find. They were used on Mustangs sometimes with the elbow fitting capped off or even modified (folded over) Also check (ya like that is going to be any easier) for big 6 cylinder applications with Thermactor systems ;)

Picture of a non-snorkel version we typically see/find on 500s and 350s that year.

(http://www.concoursmustang.com/forum/gallery/12/6-170619024821.jpeg)


Quote from: Shelby_r_b on June 16, 2019, 06:58:41 PMHere's the question:  do I need to do anything else to the smog system to render it inoperable,

If only the hose from the top nipple of the valve is not connected to the intake or top of the air filter and everything else is hooked up the system will not be inoperable. Pump (if not frozen, broken or damaged) will pump fresh air into the heads as designed.

Not sure why you don't want it to operate as Ford designed it (HO difference is around 2% - no where near what the AC will be pulling down once on).  You can just leave off the belt but you will get hot exhaust air creeping possibly of the injector manifold and the car may not run very well without the system operating and some additional work. 

Hope this helps
Title: Re: 1967 Shelby GT350 Coil Placement
Post by: JD on June 17, 2019, 02:22:09 PM
Quote from: Bob Gaines on June 14, 2019, 06:07:55 PM
The coil goes on the intake on a smog equipped GT350 regardless of if AC or not. It is mounted in a special added threaded hole for that purpose extra on the S7MS and the S2MS large number intake.

Here is an image of the intake (S2MS version) that Bob is referring to.  The hole with the red arrow and the red circle is the one that the coil would be attached to.

Title: Re: 1967 Shelby GT350 Coil Placement
Post by: shelbydoug on June 17, 2019, 02:32:06 PM
Quote from: 557 on June 15, 2019, 05:00:42 PM
Just curious as I've never seen one, how effective was /is the A/C in these cars?

You need to wear a jacket, gloves and earmuffs. Your eyebrows will ice up too. I like it 'cause it's like cryogenics. Keeps you looking younger.  ;)
Title: Re: 1967 Shelby GT350 Coil Placement
Post by: FL SAAC on June 17, 2019, 07:16:56 PM
Quote from: shelbydoug on June 17, 2019, 02:32:06 PM
Quote from: 557 on June 15, 2019, 05:00:42 PM
Just curious as I've never seen one, how effective was /is the A/C in these cars?

You need to wear a jacket, gloves and earmuffs. Your eyebrows will ice up too. I like it 'cause it's like cryogenics. Keeps you looking younger.  ;)

+ 1 brrrrrrr
Title: Re: 1967 Shelby GT350 Coil Placement
Post by: Shelby_r_b on June 18, 2019, 10:42:48 AM
Quote from: J_Speegle on June 16, 2019, 09:57:41 PM
Quote from: Shelby_r_b on June 16, 2019, 06:58:41 PM
Another question: I noticed that the top of the smog filter on the pictured cars is way different than the one on my car. It looks like the cap should have a long tube and a hose connection to a valve on the passenger side of the firewall (which my car has the valve and a piece of cut hose that sound be coming from the top of the smog filter).

Not all the tops used for the top of the thermactor filter canister had the snorkel - the vast majority of originals I've seen didn't have them - only the elbow. Would guess that many we see today have systems built from parts collected rather than ones that came with the car originally. There is a possibility that there was at least one other configuration but until I find another car that matches than example would only confuse the subject and its tough enough all ready :)

The hose from the top and bottom go to the smog pump and to the valve


Quote from: Shelby_r_b on June 16, 2019, 06:58:41 PMAlso, is it hard to find the correct smog filter cap?

Either of the versions are a pain to find. They were used on Mustangs sometimes with the elbow fitting capped off or even modified (folded over) Also check (ya like that is going to be any easier) for big 6 cylinder applications with Thermactor systems ;)

Picture of a non-snorkel version we typically see/find on 500s and 350s that year.

(http://www.concoursmustang.com/forum/gallery/12/6-170619024821.jpeg)


Quote from: Shelby_r_b on June 16, 2019, 06:58:41 PMHere's the question:  do I need to do anything else to the smog system to render it inoperable,

If only the hose from the top nipple of the valve is not connected to the intake or top of the air filter and everything else is hooked up the system will not be inoperable. Pump (if not frozen, broken or damaged) will pump fresh air into the heads as designed.

Not sure why you don't want it to operate as Ford designed it (HO difference is around 2% - no where near what the AC will be pulling down once on).  You can just leave off the belt but you will get hot exhaust air creeping possibly of the injector manifold and the car may not run very well without the system operating and some additional work. 

Hope this helps

Hi Jeff - many thanks as always for the insight!  :D

The only reason for rendering the thermactor inoperable was based on feedback I received stating that the thermactor system didn't offer any real value and only cut horsepower.  And, good point, regarding the AC impact.  I remember hearing and seeing a difference once the AC was kicked on last week.

Thanks again!
Title: Re: 1967 Shelby GT350 Coil Placement
Post by: Shelby_r_b on June 18, 2019, 10:43:48 AM
Quote from: JD on June 17, 2019, 02:22:09 PM
Quote from: Bob Gaines on June 14, 2019, 06:07:55 PM
The coil goes on the intake on a smog equipped GT350 regardless of if AC or not. It is mounted in a special added threaded hole for that purpose extra on the S7MS and the S2MS large number intake.

Here is an image of the intake (S2MS version) that Bob is referring to.  The hole with the red arrow and the red circle is the one that the coil would be attached to.

This pictures is perfect - thanks, JD!!  :D
Title: Re: 1967 Shelby GT350 Coil Placement
Post by: Shelby_r_b on June 18, 2019, 01:40:24 PM
Here are two pictures of my current smog pump air filter cap.  I'm guessing this isn't correct based on the lack of the elbow.  Is this correct or incorrect?  Sorry, I know the pictures aren't the greatest.  :(

Thanks!
Title: Re: 1967 Shelby GT350 Coil Placement
Post by: 557 on June 18, 2019, 02:01:45 PM
Super jealous on the A/C thing!!! I have a black on black 4 speed big block and driving that thing on hot days in Los Angeles even with the windows down is "somewhat less than pleasant"...Enjoy your arctic splendor!!!LOL
Title: Re: 1967 Shelby GT350 Coil Placement
Post by: Bob Gaines on June 18, 2019, 02:44:42 PM
Quote from: Shelby_r_b on June 18, 2019, 01:40:24 PM
Here are two pictures of my current smog pump air filter cap.  I'm guessing this isn't correct based on the lack of the elbow.  Is this correct or incorrect?  Sorry, I know the pictures aren't the greatest.  :(

Thanks!
The filter can top that has a 90degree elbow or the one with the 90degree plus a tall tube chimney are the two styles I have seen on 67 Hipos .
Title: Re: 1967 Shelby GT350 Coil Placement
Post by: shelbydoug on June 18, 2019, 03:41:21 PM
Quote from: 557 on June 18, 2019, 02:01:45 PM
Super jealous on the A/C thing!!! I have a black on black 4 speed big block and driving that thing on hot days in Los Angeles even with the windows down is "somewhat less than pleasant"...Enjoy your arctic splendor!!!LOL

The A/C systems do work well on R12. R134 isn't as cold so you don't need the ski googles.

Air temps at the registers with R12 is 34f. Normally with R134 expect about 40-41f. 

These cars were designed before rear seat ducting was seriously considered so if you should have an unfortunate inhabitant of the rear seat, expect some complaints.

What happens is that you will turn down the fan because the front will be cold but in the sun the rear is going to be a little sweaty.

They also are going to work better (quieter) with the stock engine cams.


My first two cars were convertibles. I found that the best combination was a white interior, white top and with A/C. I'd drive all the time with the top down and A/C on with all the registers pointed at me.

Black seats needed a good shearling cover to keep you from getting seriously burned from the heated black upholstery. A black top needs a really good insulation blanket. You can fry an egg on one in the sun. They get hot.

White cars do have an advantage.