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427 shifter location
Got a question that I've often wondered about but never come up with an explanation for it....
289 Cobras have their shifters positioned on the T-10 so that the gearshift is correctly located and requires a normal 'straight' shift lever. 427 Cobras have their Toploader shifters located further aft, requiring a reversed Mustang shift lever to position the shift knob in a comfortable spot for the lucky user. Why is the 427 shifter located in this position? Cheers, Glen |
Because they are different transmissions and use entirely different linkages and shifters.
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The 427 used a Galaxie "top loader" and the shifter was located rearward of where the T10 unit was thus the "reversed" shifter.
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Yes I do understand that the two transmissions are entirely different. One is a Borg Warner T-10 and the other is a Toploader.
Expanding my question a little then....why did Shelby position the shifter mechanism where he did (longitudinally) when he could have positioned it further forward on the side of the Toploader and had a non-cranked shift lever? There are brackets available for Toploaders that enable the shifter mech. to be placed virtually wherever you want fore-and-aft, so did Shelby (or Rem?) just say "b*gger it, nobody else does it this way, so we will"? ....or "wouldn't 1-2 and 3-4 shifts be nice if the action was up and down rather than fore-and-aft"? I'm just thinking that there must be some logic there that hasn't hit me yet. Cheers, Glen |
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At that time the trans to handle the power was the Galaxie version with a long tailstock and the shifter rearward (remember this came out of a full size car and the back of the engine was close to three feet away from the shifter hole in the tunnel) so the reversal was required. Had this been 1970 there would have been Mustang and Fairlane applications with mid mounted locations for the shifter and a greater choice of Ford/Hurst shifters and rods.
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Actually once you get used to shifter it is not a big deal at all. Personally like the way it is setup, power shifting is not a problem at all. The one thing that was awkward at first was the pedals located to the left, now it feels natural.
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Not sure what the Ford shifter unit bracket looks like - may not have been a ready made source to move it forward on the transmission. I suspect (maybe someone can correct me) that 427 engine transmission assemblies came from Ford with a shifter on them. I guess it was simpler to reverse the handle than cobble up a new mount plate, modify the rods, etc.
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I think Dan is right from what I have read. It was also cheaper to simply reverse the lever than add an aftermarket kit at additional cost.
Shelby was a penny pincher. Cheers Greg |
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If a bracket wasn't currently available to move the shifter and lever forward by 3", then it would have taken Phil Remington two minutes to sketch up a bracket, and an hour for one of the mechanics to make it up and shorten the rods. OK, I'm over-thinking it ;) Cheers, Glen |
then it would have taken Phil Remington two minutes to sketch up a bracket, and an hour for one of the mechanics to make it up and shorten the rods.
And then repeat that last part...for every car made. OK, I'm over-thinking it Yep. They flipped the shifter around, it worked. No need to re-invent something, just cut the hole in the tunnel further back. |
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Perhaps you're over-thinking it as well as underestimating it ;)... because there's no "bracket" involved. The tail-housing design (casting) is what sets the shifter location. Moving the shifter mechanism (and have it fit and operate correctly) with a custom bracket is not so easy, especially on these old external linkage units. Hence all the tail-housing variations Ford produced. As a side note, if you're building an accurate replica of a 289, you'll need the Galaxie configuration - T10 or Toploader, either will work as the shifter location is the same. Hope this helps. |
A lot of Shelby's work on the cars was quick and sloppy, with a "get the engines in and sell them" execution. SA was interested in racing, not selling street cars. The tailshaft housing used on the Cobra 427 was drilled/tapped in the rear most shifter position as supplied from Ford. It was easiest to just turn the handle around and leave the shifter attached to the housing.
Larry |
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My Toploader is a C8AR-7006 housing (so '68 vintage) with a D0ZR-7A040-A tailhousing. Deciphering the tailshaft casting ID tells me that it's a 14" 28 spline tailhousing, probably originally specc'd for small block fitment in a Cyclone/Fairlane/Torino or Mustang/Cougar/Torino 390 Not sure a Galaxie config. is what I would have wanted as Galaxie tailhousings are 17" and 31 spline so that's too long (IMO) for a very short tailshaft. My Toploader's most recent duty was in a 351 Falcon (Australian), in which application it would have needed the shifter mechanism further aft. It achieved that with a bracket that moves it back three or four inches. My David Kee agent, who's doing the rebuild, tells me that brackets were commonly used to position the shifter in the correct place. It's just a very simple bracket. Digressing - that beautiful 289FIA is keeping you entertained? Cheers, Glen |
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Cheers, Glen |
When building our car with big block and toploader it was obvious why the shifter was in it's location. It would have been impossible to move it forward the shift rods were already quite short. Moving the shifter forward would have made it next to impossible to make it work not to mention it would then not look like the originals.
When converting over to a Tremec it was a no brainer where the shifter was to reside. |
[quote=LightNFast;1344614]Glen,
Perhaps you're over-thinking it as well as underestimating it ;)... because there's no "bracket" involved. The tail-housing design (casting) is what sets the shifter location. QUOTE] That's the part I wasn't sure about with the factory Ford shifter - did it even use a mounting bracket or did it bolt directly to the tail housing? |
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My logic had me thinking why didn't Shelby just fit a bracket ....etc ....because my Toploader has a bracket to mount the Hurst shifter mechanism to the tailhousing (for previous Falcon-fitment duties). Here's a picture of my Toploader pre-rebuild... http://i1120.photobucket.com/albums/...psthssebsh.jpg The shifter mechanism, post-rebuild, will be relocated further forward so that it's in the correct position for a 289. Cheers, Glen |
Photo from The Cobra Experience museum in Martinez, CA.
Larry http://i21.photobucket.com/albums/b2...ps1719f96b.jpg |
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