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SVT Shelby GT500
Retrofitting a '13 GT500 carbon fiber driveshaft to an '07-'12 GT500
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<blockquote data-quote="Tob" data-source="post: 12909445" data-attributes="member: 83412"><p>Looking back, it's been a long road. A lot of research, planning, and quite a bit of field work. I must have been under the car 25 or 30 times for this one. This is one custom mod that I did not want to fail.</p><p></p><p>I'm happy to report that with the adapter and flange in place that the factory 2013 GT500 carbon fiber driveshaft fits like a glove. After torquing the new output shaft nut in place I laid a protective layer of cardboard atop the exhaust system and then carefully slipped the shaft into the tunnel, starting from the rear moving forward. I slipped the rear CV joint into the pinion flange at the axle and then put a couple of bolts in so that it couldn't slip out. I then moved to the front joint. It was easy to compress the CV joint enough to allow it to fit into the custom flange up front.</p><p></p><p>I then torqued the bolts at the front, using the factory 'paired' washers that I pillaged from the original steel driveshaft.</p><p></p><p>[ATTACH=full]446422[/ATTACH]</p><p></p><p>I then torqued all new factory Ford hardware at the rear of the shaft. All of this was done with the axle at simulated ride height. I did not have to lower the axle in order to get the shaft into place. So I moved to checking clearances.</p><p></p><p>Atop the shaft, from the rear looking forward, at normal ride height...</p><p></p><p>[ATTACH=full]446423[/ATTACH]</p><p></p><p>[ATTACH=full]446424[/ATTACH]</p><p></p><p>Below the shaft, from the rear looking forward, at normal ride height...</p><p></p><p>[ATTACH=full]446425[/ATTACH]</p><p></p><p><em>I was beyond giddy</em>. So I elevated the rear axle, compressing the bumpstops until they started to lift the car off of the jack stands...</p><p></p><p>[ATTACH=full]446426[/ATTACH]</p><p></p><p>Mid-shaft, looking rearward...</p><p></p><p>[ATTACH=full]446427[/ATTACH]</p><p></p><p>Beneath the fixed flange at the transmission, I shifted to the gap between the body/tunnel and the driveshaft on the passenger side, looking rearward...</p><p></p><p>[ATTACH=full]446428[/ATTACH]</p><p></p><p>Same direction, except I shifted over to show the gap on the driver side...</p><p></p><p>[ATTACH=full]446429[/ATTACH]</p><p></p><p>Because I couldn't get my phone or Canon Rebel XT between the top of the shaft and the tunnel, I resorted to my Milwaukee <em>ColonCam</em> to verify clearances, as well as sliding my hand atop the driveshaft from one end to the other...</p><p></p><p>[ATTACH=full]446430[/ATTACH]</p><p></p><p>Nothing less than an inch and a half all the way with the suspension compressed on factory bumpstops. Well, there was one point where I measured about an inch. It was right where the transmission tunnel tapers down aft of the shifter. Not a concern, as it is very near the start (or pivot point) of the shaft. A 1/8" worth of shaft movement at the front yields something like an 1" of clearance at the axle end. </p><p></p><p>Fits like a glove.</p><p></p><p>[ATTACH=full]446431[/ATTACH]</p><p></p><p>So I'll no longer need:</p><p></p><p>The bolts at the front U-joint or the bolts/spacers at the carrier...</p><p></p><p>[ATTACH=full]446432[/ATTACH]</p><p></p><p>The heavy ring at the OE flange...</p><p></p><p>[ATTACH=full]446433[/ATTACH]</p><p></p><p>Or this marvel of engineering from FoMoCo...</p><p></p><p>[ATTACH=full]446434[/ATTACH]</p><p></p><p>It will now live out its life atop a shelf at the back of the shop.</p><p></p><p>[ATTACH=full]446435[/ATTACH]</p><p></p><p>I'd be road testing but I don't have any seats in the vehicle right now and have just started my FTBR braking upgrade. But I am very pleased with the results to date.</p></blockquote><p></p>
[QUOTE="Tob, post: 12909445, member: 83412"] Looking back, it's been a long road. A lot of research, planning, and quite a bit of field work. I must have been under the car 25 or 30 times for this one. This is one custom mod that I did not want to fail. I'm happy to report that with the adapter and flange in place that the factory 2013 GT500 carbon fiber driveshaft fits like a glove. After torquing the new output shaft nut in place I laid a protective layer of cardboard atop the exhaust system and then carefully slipped the shaft into the tunnel, starting from the rear moving forward. I slipped the rear CV joint into the pinion flange at the axle and then put a couple of bolts in so that it couldn't slip out. I then moved to the front joint. It was easy to compress the CV joint enough to allow it to fit into the custom flange up front. I then torqued the bolts at the front, using the factory 'paired' washers that I pillaged from the original steel driveshaft. [ATTACH=full]446422[/ATTACH] I then torqued all new factory Ford hardware at the rear of the shaft. All of this was done with the axle at simulated ride height. I did not have to lower the axle in order to get the shaft into place. So I moved to checking clearances. Atop the shaft, from the rear looking forward, at normal ride height... [ATTACH=full]446423[/ATTACH] [ATTACH=full]446424[/ATTACH] Below the shaft, from the rear looking forward, at normal ride height... [ATTACH=full]446425[/ATTACH] [I]I was beyond giddy[/I]. So I elevated the rear axle, compressing the bumpstops until they started to lift the car off of the jack stands... [ATTACH=full]446426[/ATTACH] Mid-shaft, looking rearward... [ATTACH=full]446427[/ATTACH] Beneath the fixed flange at the transmission, I shifted to the gap between the body/tunnel and the driveshaft on the passenger side, looking rearward... [ATTACH=full]446428[/ATTACH] Same direction, except I shifted over to show the gap on the driver side... [ATTACH=full]446429[/ATTACH] Because I couldn't get my phone or Canon Rebel XT between the top of the shaft and the tunnel, I resorted to my Milwaukee [I]ColonCam[/I] to verify clearances, as well as sliding my hand atop the driveshaft from one end to the other... [ATTACH=full]446430[/ATTACH] Nothing less than an inch and a half all the way with the suspension compressed on factory bumpstops. Well, there was one point where I measured about an inch. It was right where the transmission tunnel tapers down aft of the shifter. Not a concern, as it is very near the start (or pivot point) of the shaft. A 1/8" worth of shaft movement at the front yields something like an 1" of clearance at the axle end. Fits like a glove. [ATTACH=full]446431[/ATTACH] So I'll no longer need: The bolts at the front U-joint or the bolts/spacers at the carrier... [ATTACH=full]446432[/ATTACH] The heavy ring at the OE flange... [ATTACH=full]446433[/ATTACH] Or this marvel of engineering from FoMoCo... [ATTACH=full]446434[/ATTACH] It will now live out its life atop a shelf at the back of the shop. [ATTACH=full]446435[/ATTACH] I'd be road testing but I don't have any seats in the vehicle right now and have just started my FTBR braking upgrade. But I am very pleased with the results to date. [/QUOTE]
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Retrofitting a '13 GT500 carbon fiber driveshaft to an '07-'12 GT500
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