Help Identifying Muncie 4 Speed - Impala Tech
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post #1 of 6 (permalink) Old 09-09-2017, 01:26 PM Thread Starter
 
 
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Help Identifying Muncie 4 Speed

The numbers are the right side of the transmission (only numbers I can find looking under the car) are : 13 04 065 903
W.G.DIV
FpCI

Numbers on the bellhousing are : GM6263756


Those are all the numbers I can find while looking under the car.

Thank you very much,

Jeff
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post #2 of 6 (permalink) Old 09-09-2017, 01:27 PM Thread Starter
 
 
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Car is not numbers matching BTW
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post #3 of 6 (permalink) Old 09-09-2017, 01:43 PM
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The 6263756 was a bell-housing off of a light to medium duty truck with a 5 1/8" diameter pilot hole for an SM456 five speed Muncie granny low truck tranny You can bolt a Muncie or Borg-Warner transmission up to it, but it may not line up properly (the input shaft collar on the front of the passenger car tranny doesn't fit tight in the hole. This can cause clutch and transmission problems down the road (clutch disc binding or excessive wear on the input shaft).

Those are build date and VIN numbers. To identify your tranny look here:

How to Identify a Muncie Four Speed: Build Date Codes, VINs, and Input Shaft

Big Dave
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post #4 of 6 (permalink) Old 09-09-2017, 02:24 PM
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Quote:
Originally Posted by Big Dave View Post
The 6263756 was a bell-housing off of a light to medium duty truck with a 5 1/8" diameter pilot hole for an SM456 five speed Muncie granny low truck tranny You can bolt a Muncie or Borg-Warner transmission up to it, but it may not line up properly (the input shaft collar on the front of the passenger car tranny doesn't fit tight in the hole. This can cause clutch and transmission problems down the road (clutch disc binding or excessive wear on the input shaft).

Those are build date and VIN numbers. To identify your tranny look here:

How to Identify a Muncie Four Speed: Build Date Codes, VINs, and Input Shaft

Big Dave
There are two 'fixes' to the larger pilot hole in the truck bell housing. There are adapter rings that may be 'added' to the 'standard' bearing retainer, and there are larger bearing retainers that replace the 'standard' ones. Either 'fix' produces the required 'tight' fit between the truck bell housing and the transmission bearing retainer.
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post #5 of 6 (permalink) Old 09-09-2017, 03:21 PM
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My suggested fix is a SFI certified steel safety bell housing. To go along with your new SFI certified fly wheel and SFI certified pressure plate to keep your toes and feet happy. I have seen too many fly wheel or pressure plate explosions in my life (including Don Garlits loosing half of his foot; but that was due to an exploding PowerGlide tranny). I blew up three of my own; and I was verrrrry happy to buy another one to replace the one that was bent all out of shape containing the shrapnel from an exploding pressure plate.

Big Dave
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post #6 of 6 (permalink) Old 09-09-2017, 06:12 PM Thread Starter
 
 
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thanks for the responses! I actually found out it is a borg warner t10!
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