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4 spd gurus #1915303
09/18/15 10:09 PM
09/18/15 10:09 PM
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NEW JERSEY
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dynamite Offline OP
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dynamite  Offline OP
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Can you identify this 4 spd for me ,still in car , I'm told it has 18 splines.. all the numbers I can find are 640, below that C99539 or C99599 then there is a 33 3..And where can I get a new shifter mechanism for it ....Thanks

Last edited by dynamite; 09/18/15 10:09 PM.
Re: 4 spd gurus [Re: dynamite] #1915357
09/18/15 11:17 PM
09/18/15 11:17 PM
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Abilene, Texas
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fastmark Offline
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Abilene, Texas
Is there a raised pad on the passenger side? Those are the stamped numbers that we need.

Re: 4 spd gurus [Re: fastmark] #1915373
09/18/15 11:36 PM
09/18/15 11:36 PM
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dynamite Offline OP
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Thanks ,, I'll get under there. tomorrow and try to see numbers on the rt side

Re: 4 spd gurus [Re: dynamite] #1915392
09/19/15 12:09 AM
09/19/15 12:09 AM
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Rittman Ohio
fourgearsavoy Offline
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Posts: 10,554
Rittman Ohio
You can't always trust the numbers on the pad because I have built a bunch of 18 spline transmissions out of big bearing 23 spline cases. I have also put 23 spline gears into an original small bearing 67 HEMI box. shruggy Sometimes you build whatever you have on the shelf.
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Re: 4 spd gurus [Re: fourgearsavoy] #1915833
09/19/15 08:19 PM
09/19/15 08:19 PM
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dynamite Offline OP
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Got the numbers on the r/t side tab..C99129H..

Re: 4 spd gurus [Re: dynamite] #1915841
09/19/15 08:29 PM
09/19/15 08:29 PM
Joined: Jun 2005
Posts: 6,257
gulfport, ms, west mi
rowin4 Offline
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gulfport, ms, west mi
Brewer Performance has a break down of transmission # but as fourgearsavoy said it is only a good number if nobody screwed with it.


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Re: 4 spd gurus [Re: dynamite] #1916209
09/20/15 05:53 PM
09/20/15 05:53 PM
Joined: Jan 2003
Posts: 25,821
Rio Linda, CA
John_Kunkel Offline
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Rio Linda, CA
Originally Posted By dynamite
Got the numbers on the r/t side tab..C99129H..


You're posting the raised casting numbers which can't always be used to ID the origins of the trans. Stamped numbers on a raised pad on the right side have the build data.

If no raised pad it's pre-'68.

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