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Old 01-22-2003, 05:53 PM
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Post Speedo gear tooth count on a Muncie?

I need to find out the tooth count on my 1973 Muncie sm-465 truck tranny. It is the cast iron one that has granny low 1st and was used in 2wd and 4wd chevys from 68-86. If I can find the # of teeth on the metal gear that is on the output shaft in the tailhousing I will be able to find the correct palstic speedo gear that it meshes with once I put in my tire size and rear end ratio. Thanks in advance, I just got it back in and filled with oil so I don't want to have to take the tailhousing off and check myself! Zach

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Old 01-22-2003, 06:22 PM
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I dont think thats what most consider a Muncie, I think they were aluminum like in a Camaro, I may be wrong try this site http://www.stovebolt.com/
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Old 01-23-2003, 05:46 PM
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The M-20 M-21 And M-22 were car trannies but the sm-465 is a very common truck tranny. Somebody must know?
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Old 01-23-2003, 07:10 PM
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call dealer see if they have an old parts book look at gear in old trans find out what ratio it was then find what you need check around some dealers still have books a nice parts person could do it for you also good hunting PS speedo shop possible help
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