input needed - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dragonscrapper · 03-31-2018, 07:21 PM

Hey guys,

I need some input. I'm trying to figure out what kind of transmission this is. It came out of a 1984 Chevrolet C10. The guy said it was a 3 speed but the more I've been looking at it, Im second guessing that.

It is stamped GM30 with the numbers 3901131 om the top with no transmission pan so I can't count the number of bolts for that to determine it that way. It has two panels on the side that I have been trying to figure out what they were for.

While looking around the internet, the only thing I have found that even remotely matches it is the Muncie 4 speed SM465 transmission and it said the two side panels are for PTO.

Based on the picture is this a Muncie 4 speed or is it a 3 speed like the guy told me?

03-31-2018, 07:21 PM	#1
dragonscrapper Registered User Join Date: Jul 2012 Location: newberry, sc Posts: 3	input needed Hey guys, I need some input. I'm trying to figure out what kind of transmission this is. It came out of a 1984 Chevrolet C10. The guy said it was a 3 speed but the more I've been looking at it, Im second guessing that. It is stamped GM30 with the numbers 3901131 om the top with no transmission pan so I can't count the number of bolts for that to determine it that way. It has two panels on the side that I have been trying to figure out what they were for. While looking around the internet, the only thing I have found that even remotely matches it is the Muncie 4 speed SM465 transmission and it said the two side panels are for PTO. Based on the picture is this a Muncie 4 speed or is it a 3 speed like the guy told me? Attached Images Last edited by dragonscrapper; 03-31-2018 at 07:32 PM. Reason: Add picture



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