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Old 04-04-2020, 11:32 AM   #1
40larry
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Default Wanted: Ford transmission expert

I have two transmission questions regarding parts used in these transmissions.


1. Is there a difference between the 022a-7113 and 21c-7113 cluster gears? Why are there different part numbers if they are interchangeable?


2. Is there any difference between the 01a-7100 and 21c-7100 low rev slider gears? They appear identical but??


Thanks for your help........40larry
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Old 04-04-2020, 11:42 AM   #2
Krylon32
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Default Re: Wanted: Ford transmission expert

Contact Mac VanPelt.
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Old 04-04-2020, 12:57 PM   #3
hardtimes
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Default Re: Wanted: Ford transmission expert

Quote:
Originally Posted by 40larry View Post
I have two transmission questions regarding parts used in these transmissions.


1. Is there a difference between the 022a-7113 and 21c-7113 cluster gears? Why are there different part numbers if they are interchangeable?


2. Is there any difference between the 01a-7100 and 21c-7100 low rev slider gears? They appear identical but??


Thanks for your help........40larry
Hey larry,
I have couple of transmission parts/rebuild books by MAC VANPELT.

You will find everything in the books and more to answer/direct you when messing/rebuilding 3 speed top loader Ford transmissions.
I'm in Canoga Park, you in Northridge. Too bad about this viirus thing, else I could help you up close with you trans problems.
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Old 04-04-2020, 01:03 PM   #4
svm99
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Default Re: Wanted: Ford transmission expert

Larry, I've looked at both the 01C-7100 ans 21C-7100 low gears and see no difference except the 21C sometimes has a small groove in the outer diameter of the flange. I have not compared both of the cluster gears.
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Old 04-04-2020, 01:46 PM   #5
Barn Junk
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Default Re: Wanted: Ford transmission expert

I believe the only functional difference is in the thrust bushing design used between the cluster gear and the rear of the case.
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Old 04-04-2020, 02:30 PM   #6
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Default Re: Wanted: Ford transmission expert

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The 21C items were some sort of experimental variation on those gears. The print specs referred to a different heat treatment (and perhaps a little different alloy - I can’t remember) than the regular Ford specs. They stopped listing those for sale a few years after the war. Regardless of a possible difference in the rear thrust washers, you can consider them interchangeable.
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Old 04-04-2020, 06:19 PM   #7
40larry
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Default Re: Wanted: Ford transmission expert

If all this is true why would they use the 21C part numbers which are for a 1942 Commercial vehicle? Also the Green Bible lists them with different matching gears and related parts. Thanks for your reply.
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