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M11 vs. T10

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mdonatelli42 View Drop Down
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    Posted: Nov/21/2022 at 8:21pm
Hello,

I may be looking for a transmission in the near future for my 69' Rebel (automatic 343).  I am having trouble finding a rebuilt/replacement M11 in Florida, but I was also thinking of upgrading to a 4 speed transmission with overdrive.  Can anyone tell me if a T10 will fit in a 343 V8 1969 Rebel?  If not, are there any suggestions for a 4 speed (overdrive) replacement?  

I am very new to AMC modifications.

Thank you for any help/thoughts you can provide! 

I am also wondering if it would be better just to have my M11 rebuilt?


Edited by mdonatelli42 - Nov/21/2022 at 8:27pm
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ramblinrev View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote ramblinrev Quote  Post ReplyReply Direct Link To This Post Posted: Nov/21/2022 at 8:38pm
Find a shop with an old-timer in it and have your M11 rebuilt.
A T10 will fit, but not without major changes. And a T10 of course has no 'overdrive' top gear.

You can get adapters to install a modern 4-speed overdrive automatic, but again-you'd be doing quite a bit of modifying, starting with the crank flange, flex plate, transmission mount, driveshaft and yoke, speedometer drive, and you'd need to wire the converter lock-up as well.
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Rebel Machine View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rebel Machine Quote  Post ReplyReply Direct Link To This Post Posted: Nov/21/2022 at 8:56pm
Originally posted by mdonatelli42 mdonatelli42 wrote:

Hello,

I may be looking for a transmission in the near future for my 69' Rebel (automatic 343).  I am having trouble finding a rebuilt/replacement M11 in Florida, but I was also thinking of upgrading to a 4 speed transmission with overdrive.  Can anyone tell me if a T10 will fit in a 343 V8 1969 Rebel?  If not, are there any suggestions for a 4 speed (overdrive) replacement?  

I am very new to AMC modifications.

Thank you for any help/thoughts you can provide! 

I am also wondering if it would be better just to have my M11 rebuilt?



T-10 should fit the '69 Rebel using the factory mounts. Trouble might be finding the clutch linkages and associated parts. I removed the M-12 in my Machine and installed the T-10. The '69 uses a different clutch linkage and bellcrank than the '70 but I think American Parts Depot has that stuff. The '70 stuff may fit in a '69 but I don't know that for sure.

-Steve-


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Post Options Post Options   Thanks (0) Thanks(0)   Quote sweatlock Quote  Post ReplyReply Direct Link To This Post Posted: Nov/21/2022 at 9:46pm
PM sent on a rebuilder in Florida 
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mdonatelli42 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mdonatelli42 Quote  Post ReplyReply Direct Link To This Post Posted: Nov/23/2022 at 7:24am
Thank you all for your suggestions and GREAT feedback!  You are all AMC rockstars!  :)
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Post Options Post Options   Thanks (0) Thanks(0)   Quote farna Quote  Post ReplyReply Direct Link To This Post Posted: Nov/27/2022 at 11:25am
If you want an auto trans there are adapters for GM OD autos. Would work with a GM stick bell housing also. An original 343 flywheel should work with a stick trans. You can use a Jeep bell and a Mustang T-5 stick-shift trans with no adapter. Just look up "AMC V-8 T-5". Doesn't matter if it's the early or late V-8 (Gen2 or 3), you just need a Gen2 343 flywheel for balance (or have the rotating assembly balanced with a late mode six flywheel).
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