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343 M12

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1969amcrebel View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 1969amcrebel Quote  Post ReplyReply Direct Link To This Post Topic: 343 M12
    Posted: Apr/17/2019 at 9:49am
HI I currently have a M11 behind my 343.

 I want to purchase an M12 rebuilt will this bolt on
to my 69 amc rebel sst?

thanks
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401MATCOUPE View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 401MATCOUPE Quote  Post ReplyReply Direct Link To This Post Posted: Apr/17/2019 at 11:06am
Yes, you just need the matching M-12 Coarse Spline yoke to match
Ross K. Peterson
68X,GoPac,343,AT,52A(1stCar)
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1969amcrebel View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 1969amcrebel Quote  Post ReplyReply Direct Link To This Post Posted: Apr/18/2019 at 12:12pm
Thanks!!!

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sweatlock View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote sweatlock Quote  Post ReplyReply Direct Link To This Post Posted: Apr/19/2019 at 6:33pm
Just out of curiosity, did you find someone selling a rebuilt M12, or are you going to have an M12 rebuilt? I ask because I have what I think is an M11b that needs a rebuild, but if someone is selling rebuilt M12’s...
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WesternRed View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote WesternRed Quote  Post ReplyReply Direct Link To This Post Posted: Apr/19/2019 at 7:08pm
Not much difference between the 11B and the 12 as far as I can tell. You can also transfer the 11 rear housing and output shaft to the 12 and then you don't have to track down the hard to find driveshaft yolk.

I reckon the 11B has the bigger 2 bolt front band servo and then the 12 adds a few Torrington bearings and the coarse spline driveshaft yolk.


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sweatlock View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote sweatlock Quote  Post ReplyReply Direct Link To This Post Posted: Apr/19/2019 at 7:47pm
The M12 yoke appears to be easier to find, there are several on eBay currently for decent prices - the M11 & M11b is cursed with sharing a yoke with the T10. 

I was just wondering if the OP found an M12 that was already rebuilt, or a source for rebuilt M12’s - even though there’s not a lot of difference between an M11b and an M12, there’s a lot of difference between a worn-out M11b and a rebuilt M12. 
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