A tale of two shifters...

Tob

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...well, factory anyway.

I recently acquired a 2013 GT500 Track Cooling package low mile take-out TR6060. Along with it, I received the '13/'14 shifter, '13/'14 clutch, as well as the cooling lines and radiator for the transmission fluid cooling system. I found these items in SVTP's for sale section and I think I got a pretty good deal from a good member.

I've followed SVT's comments since '07 regarding the shifter and how it has been addressed over the years. For '13...

5.0 Magazine said:
the shift lever ratio was slowed to reduce effort and keep "their hand from beating their foot," as Jamal Hameedi put it.

I forget if the ratio was quickened in '10/'11/'12 over '07/'08/'09 but I believe it was. But SVT isn't very specific about the changes made. Since I had removed my original 2009 shifter (at less than 100 miles) and replaced it with an FRPP unit, I grabbed the box that it resides in and was interested in comparing the '13 to the '09. They look very similar upon initial inspection.

I started by pulling the boot off that encapsulates the top half of the pivot and set the two next to each other.

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Right off the bat, notice the 90* difference at the shifter stub. I forget if this occurred earlier, but regardless, why?

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IMG_1283z_zps78371c8d.jpg


Hameedi mentioned a ratio change. While the two seem to be geometrically similar they aren't.

IMG_1293z_zps596dac24.jpg


The distance from the pivot centerline up (on the stub) is the same. But down, they are not. Note the dimensions shown from the baseplate to the arm bolt centers...

IMG_1296z_zps09654a9c.jpg


IMG_1297z_zps3ae62225.jpg


The '13 arm attaches to a longer section from the pivot down.

The changes made to the shifter did not necessitate changes at the mounting points on the transmission itself. Either shifter attaches the same way.

IMG_1309z_zpsbd80d50b.jpg


IMG_1315z_zps099fceb8.jpg


However, there have been changes made to the ends of the attachment arms as well as their respective bushings. Notice how the '13 arms have been 'squished' or narrowed. This was done so that Ford could still weld all the way around them when they attach to the bushing tube, which at some point was narrowed from the '09 shifter I have.

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Note the last photo. The early bushings, while not only using a different size, were fluted. What that means is that there are voids between the inner bushing face and the pin sleeve when installed. What THAT means is that they allow a lot of movement. I installed each shifter, grabbing them by the tail, and rocked them left to right. While both were awful, the early bushing movement allowed for more deflection than that of the later one, even with a wider steel tube.

I started taking dimensions, wondering how much a solid bushing might improve feedback, as much as it is sure to increase NVH at the shifter. Believe it or not, the width between the machined bosses on the transmission aren't exactly the same from side to side (which allows for even more deflection as the bushings used are the same from side to side of each respective shifter).:nonono:

I'd be interested to hear from anyone that still has their factory '10-'12 shifter to see how it deviates from either of the two I'm showing.

A few more shots of the associated hardware...

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Devious_Snake

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Excellent Tob! This I think is partly the reason Steeda had to redo the tri-ax shifters to work on GT500's. I currently have it and love it.
 

Tob

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Thanks guys.

Anyone with their '10/'11/'12 original shifter out there that can take a look at the bushings and see which one of these two shifters it looks like?
 

Tob

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I use them for the engineer's scale on the other side for shooting grades, etc. Some of the old timers I have worked with would actually unfold the rule and lay it end to end to get a measurement that was longer than 6'. They refused to use a windup steel tape measure.
 

Tob

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You never, ever, know.

:)

Maybe one day. If and when it does, it'll be nice to simply hook up the '13 driveshaft directly to it without all that silly billet steel nonsense.

Surfing the web, I found some original shifter assemblies for sale on eBay. If the ads are to be believed, it looks like Ford changed the bushings at the transmission end in 2010. According to a listing I found...

For sale is a 2010 ford mustang Shelby Gt 500 shifter assembly. It's a new take off. Was driven for 10 miles and then removed. Comes with anything shown.

It would appear as though the '07-'09 shifters are all the same. The change to the stiffer (if you could call it that) or higher durometer rubber bushings, side mount stub, and narrowed arms arrived in 2010.

_T2eC16FHJIkE9qU3iLlMBRYJrEG8g60_57_zpsc59b389e.jpg
 

6-Speed

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Here's a measurement of the FRPP short-throw shifter arm just for comparison. Note that I used a different reference point for the measurement than you did.

FRPP_Shifter_Arm_zps9cd3be7c.jpg
 

Ninjak

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Very very informative Tob. Make sense now why there is so much slop, and why the aftermarket is so much better.
 

mblgjr

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I don't know exactly what the function detailed differences are... but. I drove a stock 2010 and the shifter was 100% improvement from the stock 07-9 units. The '10 felt a little more like the FRPP unit in terms of throw; but also a bit stiffer.
 

Tob

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I'm looking at a framework that would anchor the shifter base with four support legs directly to the case. In effect, a skeletal tailhousing that uses no rubber bushings to support the pivot base. Increase NVH? Hell yeah! How much? Time will tell...
 

Poppacapp

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Here are some pics of my shifter out of my 2012. The shift arm is in the car, so I don't have pics of that, but you can go based on the center of the hole for comparison.

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IMG_20130730_185256_605_zps67d4286c.gif
 

Justin@VMP

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I liked the shifter in my 07 better than our 13, but I prefer long easy throws. The 13 feels shorter/stiffer.
 

Tob

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Here are some pics of my shifter out of my 2012.

IMG_20130730_185256_605_zps67d4286c.gif

Thanks for that Poppa. Looks to be ~1-13/16" from the underside of the baseplate to center of hole. I went through all the new model year introduction pdf's I have on hand. I didn't have one for 2010 but that appears to be the first year that the linkage geometry was redone to allow for quicker shifts, based on what I found here...

Popular Mechanics said:
The GT500 should feel even more lively thanks to a shorter rear-end ratio (3.55:1 versus 3.31:1). To ensure that the new rear end won't make the car too busy on the highway, the engineers made the top two gears of the six-speed manual transmission—it's the only available gearbox—taller. They also revised the linkage, for shorter, quicker throws.

Which would make sense as it would coincide with the changes to the shifter stub, bushings and arms as well.

Studying everything else regarding 2011/2012 GT500's it would appear as though the shifter linkage was carried over in its entirety from the 2010 model year. Which was then changed again in '13 with the shift lever ratio slowed to reduce effort and keep "their hand from beating their foot." That quote is from 5.0 magazine quoting Jamal Hameedi, here.

You can see the 'Prototype' tag affixed to the preproduction '13 shifter in the following photo from the above linked article as well.

_2013GT500factoryshifterlinkage_zpseb742adb.jpg


This means Ford (not Tremec, as the shifter is Ford's design) did the following with respect to GT500 shifters from 2007-2013:

- 2007 through 2009 shifter assemblies were all the same (1-5/16" dimension noted).
- Changed leverage ratio (etc) for quicker shifts in 2010 and remained the same through 2012 (1-13/16" dimension noted).
- Changed the leverage ratio again for 2013/2014, this time to slow down shifts (1-1/2" dimension noted).

Looks as if the '10-'12 factory shifter assembly is the most desirous from an OEM "quickest shift" perspective. Interestingly enough, wasn't 2010 the year when complaints of transmission gear clashing started?
 

Tob

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An update to this thread. I acquired a '10-'12 shifter (thanks Sam!) sans actuating rod a couple of weeks ago. Then today I had a shipment which included a FRPP/KR shifter. Of note to any '07-'09 or '13/'14 owners looking for a fantastic value along with the quickest S197 ratio, the current FRPP/KR shifter is a great buy. This doesn't happen very often but at the moment Ford Racing is offering the same shifter at two different prices.

The "2007-2009 MUSTANG SVT SHORT THROW SHIFTER," part #M-7210-B, normally retails for $205. I see it currently advertised online for $169. The "SHELBY GT-500KR® SHORT THROW SHIFTER KIT," part# M-7210-BKR1 is shown as retailing for $379 (which also includes the KR stick/ball, bolts, etc). I see it currently advertised online for $89 and (separately) the KR stick/ball for $69. That was a deal too good to pass up. Supplies of these are obviously limited so act swiftly if one of these works for you!

Interesting to note the date on the label, as the KR shifters were supposedly Ford Parts stock that sat on shelves for some time. These were just packaged...

IMG_1821z.jpg


The box from a few years ago that contained the FRPP "SVT" shifter I have on my car now...

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I purchased and installed the FRPP (SVT) shifter a few years ago and didn't get what comes with the KR shifter (driveshaft bolts and thread locker)...

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I currently have the black/black FRPP stick/ball but the KR counterpart was a deal simply too good to pass up...

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I could now lay out an example of every '07-'14 GT500 TR6060 shifter as well as a FRPP/KR unit...

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Of interest, the two rear bushing iterations. One is the FRPP/KR and the other is all other years. They look the same but aren't...

IMG_1835z.jpg


Applying a moderate squeeze to a '07-'14 (I had already labeled it for '07-'09 but it covers all years to '14)...

IMG_1836z.jpg


Applying about the same amount of pressure to the FRPP/KR bushing...

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Much stiffer. And here it is, the FRPP/KR shifter in terms of a pivot dimension relative to the others I've taken...

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Measures 1-7/8". The largest increase or change in ratio would come from replacing any '07-'09 shifter with one of these. You can clearly see the difference in length between the two...

IMG_1838z.jpg


Incidentally, I measured the '10-'12 shifter and came up with the same 1-7/8" (as opposed to the earlier 1-13/16" figure I was using before). In essence, the '10-'12 shifter is the "fastest" or shortest throw factory shifter offered on a GT500 from '07-'14 - if you exclude the '08/'09 KR that is. Otherwise the KR, the '10-'12, and the FRPP shifter all use the exact same geometry (Remember - the handle orientation was rotated 90* starting in '10 and front fork bushings were changed as well). The FRPP/KR shifter is technically superior due to a more performance oriented rear bushing but one could simply change to the better bushing in seconds if it could be sourced.

So, '13/'14 owners, as long as you use the requisite stick you can use the earlier FRPP/KR shifter and have quicker firmer shifts over your original shifter.

In terms of quickest shifting action, fastest to slowest, the order looks to be:

1) A tie between the FRPP/KR shifter and the '10-'12.
2) The '13/'14 shifter.
3) The '07-'09 shifter.
 

stkjock

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I have the KR shifter since I got my Shelby. Always found it to be a solid unit.

That white shifter ball is nice.... Hmmmmmm
 

Tob

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Its very nice, especially considering what they were going for in the past - if you could find one for sale. These don't have any Ford Racing markings on them either, such as this one from FRPP does. If you compare the two polished versions, you'll note that the FRPP version is quite a bit thicker at the mounting point/holes than that of the KR. I don't know why they did that as I have never heard or seen any failures of the KR stick. My guess would be that the engineers thickened the FRPP handles (whether black or polished) because they eliminated use of the rubber isolator and mounted the stick directly to the shifter stub while the KR handle still uses the rubber isolator.
 

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