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Gray Ghost · 03-24-2007, 10:41 PM

My buddy has a four speed in his panel truck and we're trying to Id the tranny. There are two numbers on the case...6281884 and 6261886. We thought this was a Muncie M21, but those numbers match nothing I can find online. Anyone know what it is? Here's a link to the numbers pic...
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03-24-2007, 10:41 PM	#1
Gray Ghost Senior Member Join Date: Sep 2004 Location: Terrell, TX Posts: 1,967	4 speed code number question... My buddy has a four speed in his panel truck and we're trying to Id the tranny. There are two numbers on the case...6281884 and 6261886. We thought this was a Muncie M21, but those numbers match nothing I can find online. Anyone know what it is? Here's a link to the numbers pic... Pic1 Pic2 __________________ Kelly '05 GMC Sierra SLE Z71 Bone stock except for new bed rail caps.