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April 19 2017 at 5:37 AM
Toploader  (Login feadam)
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Does anyone know if a 4 speed top loader out of a 1967 fairlane 390 car would be a 29 or 31 spline trans.?

 
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Gerry
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28-spline, 14" tailshaft housing, wide ratio. n/t

April 19 2017, 6:16 AM 


 
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Adam Matteson
(Login feadam)
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Re: 28-spline, 14" tailshaft housing, wide ratio. n/t

April 20 2017, 12:22 AM 

Thanks Gerry,
Are the 28 spline drive shafts all common? I'm building a cobra and factory five sells a driveshaft for the T-5 that is 28 spline, will that work with this toploader 28 spline?

 
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Gerry
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C4 and 28-spline toploader are the same. Can't say for the T5, though.

April 20 2017, 6:26 AM 

While the yoke might fit just fine, the u-joint could be different. Of course, you could solve that with a hybrid joint. You could probably discover the truth by poking around the net and finding specs for the C4/toploader and the T5 yokes.

If you really mean are all C4/toploader driveshafts the same, then absolutely not. They are different for every application. If you are buying a manufactured driveshaft for a T5 and want to use it with a toploader, then you will have to find out how long the T5 is compared to the toploader...which would be 24" from bellhousing face to tailshaft housing end on the Fairlane toploader.

 
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Adam Matteson
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Re: C4 and 28-spline toploader are the same. Can't say for the T5, though.

April 20 2017, 7:25 AM 

The drive shaft they sell should be the correct length, it comes with the yoke. Trying to figure out if a yoke from the t-5 is the same as the top loader, that way I could use the drive shaft they sell. I will look on internet some more to see if the info is out there, looked already but found nothing.

 
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Tom P
(Login tomposthuma)
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it is

April 20 2017, 10:18 AM 

A T5 yoke fits a C4 and a small spline toploader.

 
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Adam Matteson
(Login feadam)
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Re: it is

April 20 2017, 11:10 AM 

Thanks Tom

 
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