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Re: 61-63 4speed and 64-65 4 speed differences
Posted by: vairchet ()
Date: January 26, 2010 09:01PM

Here ya go Gary, I almost forgot the exploded view of a '61 - '65 four speed:

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Re: 61-63 4speed and 64-65 4 speed differences
Posted by: garydup ()
Date: January 28, 2010 08:19AM

hi vairchet,once again thanks for all your help,looks like the 64-65 casing has the two strengthening ribs arround it.

thanks gary

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Re: 61-63 4speed and 64-65 4 speed differences
Posted by: vairchet ()
Date: January 28, 2010 12:04PM

As far as I know, this is merely a technical drawing created before actual production. No external ribs that circumvent cast iron transmission cases were produced on any '61-'65 four speeds that I ever seen. Notice the bolt-in reverse inhibitor in the photo, that was used only for '61 models.

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Re: 61-63 4speed and 64-65 4 speed differences
Posted by: UGLYTRUK ()
Date: February 14, 2010 09:24PM

Interesting reading, but I'm still not ready to tackle one!!! maybe at Cedar Rapids!!! -smiling smiley

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Re: 61-63 4speed and 64-65 4 speed differences
Posted by: kenFL ()
Date: February 15, 2010 07:26AM

Also read all the info here. No real need for it now but with guys like Craig and Chet, this is why I think this is the best Auto Forum out there.

Thanks guysthumbs up

Cheers, ken!

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Re: 61-63 4speed and 64-65 4 speed differences
Posted by: caroseiii ()
Date: April 09, 2020 08:28PM

This thread is very good and thought I would revisit it. Vairchet demonstrated the worn 1-2 synchronizer groove but I took some photos for measurement purposes so you could see what is designed versus worn on the forks which cause some loss of blocker ring tension. The first photo shows the width of the groove is about 0.226. The second photo shows a new 1-2 fork finger "tip" width of about 0.214.

Crawford

C.A. Rose
Metairie, LA
1962 Spyders



Edited 1 time(s). Last edit at 04/09/2020 08:31PM by caroseiii.

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Re: 61-63 4speed and 64-65 4 speed differences
Posted by: caroseiii ()
Date: April 09, 2020 08:30PM

The third and fourth photos shows two different used 1-2 fork finger "tips" with similar wear of the width of about 0.16. That is a lot of wear stack on top of the synchronizer groove wear.

Crawford

C.A. Rose
Metairie, LA
1962 Spyders



Edited 1 time(s). Last edit at 04/09/2020 08:32PM by caroseiii.

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Re: 61-63 4speed and 64-65 4 speed differences
Posted by: mood ()
Date: July 29, 2020 07:52PM

Id like to add that the '62-'63 shift forks appear to be forged steel whereas the '64-'65 ones are cast iron. Too bad they don't have the anti-rotation tabs.

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