ConcoursMustang Forums
1st Generation 1964 1/2 - 1973 - Questions & general discussions that apply to a specific year => 1967 Mustang => Topic started by: bhoulis on August 21, 2018, 06:23:42 PM
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On a 67 289 4 spd car, where should the firewall grommet be on the cable relative to the dash end. I remember seeing something once that there's supposed to be a piece of tape on the cable that would tell the line worker where to stop locate the cable at the firewall. Enough to engage the speedo and enough slack on the other end to connect to the transmission. Also, any pics of the routing through the apron clip and across the firewall would be nice. Thanks. Brian
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Here is what my Shelby has for its routing. Date of car in Sig.
Error on pic. Pic removed.
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.................Also, any pics of the routing through the apron clip and across the firewall would be nice. Thanks. Brian
Got it that its a small block 4 speed (3 speed should be the same) but when and where the car built just in case there were differences and especially since its a 67 - a running change ::)
Plus it helps narrow ( if we can) the search to only a few thousand pictures rather than maybe triple that number
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SJ March 22. In the Osborn chassis manual at the top of the speedometer cable installation page it shows a cross section of the cable going through the firewall. Shows 2 pieces of tape on the cable with the grommet between them. I'm assuming it would be an identical dimension on all 67 speedo cables as the speedometer and cable firewall hole locations were same on all models. Brian
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SJ March 22. In the Osborn chassis manual at the top of the speedometer cable installation page it shows a cross section of the cable going through the firewall. Shows 2 pieces of tape on the cable with the grommet between them. I'm assuming it would be an identical dimension on all 67 speedo cables as the speedometer and cable firewall hole locations were same on all models. Brian
Sorry I misunderstood what your looking for - my mistake. You only need a measurement from the end of the speedo to the firewall. Sorry don't have a 67 apart and I've never needed to measure the location since I can adjust that length as needed and I never considered it needed to be an exact distance just like other years and engine/trans combinations
Never heard of a guide or indicator for that purpose. One different years there were locators for other specific points
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That isn't what the clip looks like I had which held it to the center accelerator bracket bolt. It looks like a J clip. My top loader also has the driven gear that comes in from the passenger side of the trans, not the driver's side like the three speed and automatic vehciles.
-Keith
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Guys he's looking for the "where should the firewall grommet be on the cable relative to the dash end" the routing and retaining clips should likely be saved for another thread ;)
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There won't be much allowance for slack behind the dash. Original cables are too rigid to curl or bend much.
The variance on the grommet itself can't be more than a couple inches either way once the cable is connected to the speedo. My suggestion is to just let it settle wherever it is after connecting the cable.
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Dash is not in at this time. In boxes waiting reassembly. I plan on doing firewall sealant next and want all the things going through the firewall to be properly position. Trying to not have to be moving things around once the sealant goes on. Brian
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The firewall sealant can be touched up later if needed. You're going to disturb it anyway pulling the cable to attach it to the cluster, there's no way around that.
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I have a firewall pic of my March2 SJ 4 speed car, included here. I removed the erroneous pic from a previous post. I chose the pic 'before' the correct one! However, no sealant appears to have made it down far enough to coat the speedo cable hanger or bolt. Zoom in for detail.
As 1967 eight barrel noted, 4 speed speedos come in on the passenger side of the tranny and loop across the firewall.
3 speeds and autos come in on the driver's side and loop under the driver's footwell.
As far as the cable and grommet location, this original Ford cable (unknown if original or replacement) has a few stickers on it that appear to indicate the grommet location at about 16".
[edit] I noticed a very small drawing in the Assy Manual on this topic.
The grommet is indeed between the two pieces of tape. But, there is a third piece of tape. So the three pieces of tape (middle of 1/2" wide tape) are at the dimensions below, while holding the dash nut tight against the stop as if it were installed:
15 1/4"
16 5/8"
21"
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Thanks Bill! Perfect picture. The reason for my interest in this is because I was attempting to use a new Ford service replacement cable that I had. As we all know they have a grey casing. Tried a few things, scuffing and cleaning real good then wiping with a big Sharpie. Looked OK-ish but the black scraped off too easy. Next was Plasti-Dip spray. Went on nice, looked great, felt pretty durable doing the fingernail test, but when I installed it and started moving it around and through some of the clips it scuffed and tore right down to the grey. Should have listened to BobG, he warned about this in another post I had found. Stubborn in my old age I guess. I was hoping if I had that dimension I could get the speedo end located, mount it in the clips and not have to move it around. But rather than go through the aggravation of repainting and probably scratching it up now, or later, I just ordered NPDs cable 17260-6a. Supposed to be the correct length, made by an OE supplier, etc. I have noticed that NPDs images on the website rarely match the ones in their paper catalog. The sales guy was nice enough to pull one and take a few pics of it and it does have the rubber anti-chafing sleeve for the transmission end as well as a firewall grommet already installed. With this new info from Bill, I can put the tape on it, install it, then spray undercoating all over it!!! FYI the Osborn chassis manual page 25 says "tape .50 wide - typical - on cable to be positioned at clips and grommet" At the 3 clips, apron, firewall and footboard??? Has anyone seen these on unrestored cars? Do judges look for this?? It's like pulling on a loose thread, you don't know what's going to unravel. Brian
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Forgot to mention, if you ever need to look up speedometer related stuff on that MPC download it's located in the bumper section. Go figure. http://squarebirds.org/Manuals/1965/1965-72FordPartsTextCatalog/
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Forgot to mention, if you ever need to look up speedometer related stuff on that MPC download it's located in the bumper section. Go figure. http://squarebirds.org/Manuals/1965/1965-72FordPartsTextCatalog/
YIPPEE! Somebody else is recommending the download of the 75 MPC! A major step forward.
Jim
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FYI the Osborn chassis manual page 25 says "tape .50 wide - typical - on cable to be positioned at clips and grommet" At the 3 clips, apron, firewall and footboard??? Has anyone seen these on unrestored cars? Do judges look for this?? It's like pulling on a loose thread, you don't know what's going to unravel. Brian
The pic you want on page 25 is lower center. There is no attachment at the driver's footboard. That's only for 3 speed and auto.
Ok, so after you put the firewall grommet between the two pieces of tape, the next item is at the next piece of tape -- a "P" style clip that is between the large clutch spring and the driver's air vent. See pic at center top of page 25.
The clip after that is at the outside firewall right above the bellhousing's center.
And finally the steel surround on the cable is attached at item "U" (lower rt. in drawing).
That makes 3 "clips" and a grommet.
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At the 3 clips, apron, firewall and footboard??? Has anyone seen these on unrestored cars? Do judges look for this?? It's like pulling on a loose thread, you don't know what's going to unravel. Brian
NPD sells the clip at the firewall. The one of the toe-board is the same as the one used on 65-66 fuel/brake lines where they are secured under the driver side floor pan. The clip over by the hood hinge is a shortened version of the driver side floor pan one, but has an extra curve at the end, only has the larger end. The toe board and inner fender clip are made of spring steel.
I still think you're going to disturb any sealant added around the speedo cable if you apply before the cluster goes in. Like I said, it's not that big of a deal to touch up if needed. The original cables I've had, the cable moves in/out of the grommet without much trouble.
Edit: corrected inner fender clip description.
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Forgot to mention, if you ever need to look up speedometer related stuff on that MPC download it's located in the bumper section. .................
From another thread that focused on 67 speedo cables - a scan of a more correct (well closer to when the cars were built) section from the MPC. Remember the MPC only shows what Ford carried on the year the book was published and what would work. In 68 there were 9 difference cables for different applications
http://www.concoursmustang.com/forum/index.php?topic=13910.msg86593#msg86593 (http://www.concoursmustang.com/forum/index.php?topic=13910.msg86593#msg86593)
For others reading this thread be aware that routing, clips used and cables vary depending on application. Engine size and transmission type ;)
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Will have to see if I have the air vent P-clip. Bill, don't forget the clip on the drivers side apron between the brake distribution block and the firewall. I don't think the repop cable is going to have that steel surround for the passenger side footboard clip to locate on. My grey cable does so I can take a measurement of where to locate the cable under that clip. Will advise when the new cable shows up. Any evidence of the tape seen on survivors or unrestored cars? I've been reading these and SAAC forums for a few years now and can't recall anyones posted engine compartment pictures being called out for missing speedo tape. Brian
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Attached photo with remains of tape on the cable - also with clip at lower throttle bracket.
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................ The clip over by the hood hinge is a shortened version of the driver side floor pan one, only has the larger end. The toe board and inner fender clip are made of spring steel.
To illustrate
(http://www.concoursmustang.com/forum/gallery/11/6-220818213618.jpeg)
(http://www.concoursmustang.com/forum/gallery/11/6-220818213633.jpeg)
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............. Any evidence of the tape seen on survivors or unrestored cars? I've been reading these and SAAC forums for a few years now and can't recall anyones posted engine compartment pictures being called out for missing speedo tape. Brian
Yes - location, color and so on dependent (it appears) on application and location
Couple of automatic examples at drivers side of firewall
(http://www.concoursmustang.com/forum/gallery/11/6-220818213513.jpeg)
(http://www.concoursmustang.com/forum/gallery/11/6-220818213452.jpeg)
Automatic speedo cable at drivers side front frame rail.
(http://www.concoursmustang.com/forum/gallery/11/6-220818213545.jpeg)
Sure I have more but just went through my non-Shelby San Jose pictures and not all the rest
Often it goes unnoticed as there is normally so much more important details that need focusing on when reviewing and commenting on someones engine compartment plus often hidden from view - especially on a power brake car. ;)
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Looks more like a paper tape, would it have been black originally?
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For those reading that may not be aware, the tags are paper and single colored from what I have seen . There were two taped tags . The fire wall grommet or at least the area the speedo cable passed through the firewall is supposed to be between the two tapped tags.
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Looks more like a paper tape, would it have been black originally?
Richard - are you asking if the labels were black or the exterior layer of the cable?
Cables were originally black on the outside
I've seen the labels/tags in different colors.
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The labels usually will have an engineering number on them too.. at least some of them along the cable sheathing.
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Richard - are you asking if the labels were black or the exterior layer of the cable?
Cables were originally black on the outside
I've seen the labels/tags in different colors.
Yes, color(s) of the tape, so it is of a paper-like, colored different colors.
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As I noted earlier, mine is either original or Ford service.
Although the picture doesn't do the color justice I would call it dark silver. The label is plastic and hardier than cellophane tape.
[edit -- use another pic]
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To illustrate
(http://www.concoursmustang.com/forum/gallery/11/6-220818213618.jpeg)
Here it is out in the open. spring steel color or black dichromate and cad colored spreader clip:
I should add that I have this clip on my March automatic parts car as well as on the Shelby 4 speed car.