1966 GTO drive shaft and slip yoke - Pontiac GTO Forum
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post #1 of 5 (permalink) Old 05-02-2016, 02:48 PM Thread Starter
 
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1966 GTO drive shaft and slip yoke

Trying find out the difference between slip yokes. Apparently the slip yoke for a two speed TH300 is half inch shorter than the slip yoke for 4 speed manual. Is that correct?
Thanks!
.....Mark

1966 GTO Convertible Automatic

Last edited by Markd15668; 05-02-2016 at 02:49 PM. Reason: typo
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post #2 of 5 (permalink) Old 05-21-2016, 06:43 AM
 
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Someone correct me if I'm mistaken, but I did this on my '66 and do not recall changing the yoke.
This was many years ago, so I looked through my files and found nothing in as far as invoice for such.

GTO Jr. - A.K.A. SPRINT 6
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post #3 of 5 (permalink) Old 05-23-2016, 05:38 PM
 
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Originally Posted by GTOJUNIOR View Post
Someone correct me if I'm mistaken, but I did this on my '66 and do not recall changing the yoke.
This was many years ago, so I looked through my files and found nothing in as far as invoice for such.
I don't think there is a difference either. Now the driveshaft length may be different as an automatic is usually longer than the 4-speed - but I can't swear to it.
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post #4 of 5 (permalink) Old 05-23-2016, 07:18 PM
 
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I don't think there is a difference either. Now the driveshaft length may be different as an automatic is usually longer than the 4-speed - but I can't swear to it.

-No difference in driveshaft yoke part number between '64-68 Super Turbine 300 transmission and the same original usage yoke used on the small output shaft Muncie 4 speed. same part number yoke was used on the base Tempest 3 on the tree 3spd transmission.

-Stock driveshaft in '64-67 Pontiac 2 door Abody with either ST300 or small output shaft Muncie 4 spd, or base 3spd in the 326 Tempest, will be 60.00" measured center to center on the 3R ujoints.

-'67 T400 used in the GTO, used a 5/8" shorter driveshaft, 59.375", center to center.

- '66-69 Pontiacs with the HD "top loader style" 3spd used their own yoke and their own length driveshaft. I currently do not have one of these in the driveshaft barrels to measure. Hope this helps!
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post #5 of 5 (permalink) Old 05-23-2016, 07:55 PM
 
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Perfect. Thanks for that answer PH.
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