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m12 shift kit |
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69 ambassador 390
Supporter of TheAMCForum Joined: Nov/22/2009 Location: Peoria, AZ Status: Offline Points: 3539 |
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Posted: Apr/21/2017 at 9:12am |
Thats correct. The console cars used a different manual valve spool.
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Steve Brown
Algonac, Mi. 69 Ambassador sst 390 84 Grand Wagoneer 69 Cougar XR7 65 Fairlaine 500XL 79 F-350 Super Camper Special |
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farna
Supporter of TheAMCForum Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Offline Points: 19689 |
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The console shift cars used a different valve body than the column shift, at least the BW M-8s did. That's why the name changed to "Shift-Command" for the console shift cars -- they could be manually shifted through the gears. I think even they have a forced upshift to 3rd though, but it's at a higher rpm. Prevents engine/trans damage from over revving. Might not be in the Shift-Command models though... don't have a TSM handy.
Akimmet -- thanks for that info on Ford trannys. I wasn't aware there was an LX long case model, probably used more in trucks. |
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Frank Swygert
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WesternRed
AMC Addicted Joined: Aug/03/2010 Location: Australia Status: Offline Points: 5808 |
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Just reading the 71 TSM and there is no mention of forced upshifts, just says that if you select 2nd it will stay there until you upshift, but will automatically downshift to 1st as dictated bye road speed.
I'm sure I read somewhere that the column shift cars had the forced upshift from 2nd to 3rd and the console shift cars did not, but I have no idea where that came from. |
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DaemonForce
AMC Addicted Joined: Jul/05/2012 Location: Olympia, WA Status: Offline Points: 1070 |
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This level of frustration and confusion found my inbox for a solid month between Cobra Transmission, various local to remote transmission shops that could barely identify my transmission, all the way up to NatPro, TranStar and TransGo. Half the problem was misidentification, the other problem was me ordering the right thing but being constantly sent the wrong parts. There are some real stupid people handling orders in these specialty shops and coming from a guy that modifies things as I see fit, that's saying a lot. I've heard everything from Fordomatic, BW-35, Mile-o-matic, Mercomatic, C-4(which may actually be the tail extension housing now that I look at a diagram of these side by side), BW-11, an extremely rare 1967 Ford MX according to Mark at TransGo, FMX according to every Ford guy and some nameless cast iron small case Cruiseomatic according to every parts shop that is convinced this must have come from some early 70's Jaguar. Just like the Torqueflite series it shifts in the same pattern and has many names with the WORST durability when using stock replacement parts. If you want this thing to last you need to modify it some, pump the gas. It's been 50 years and there's been a lot of aftermarket support made for these, I've been told they usually swap pieces from the C4 and AOD-E. |
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348AMX
AMC Addicted Joined: Jul/03/2007 Location: Massachusetts Status: Offline Points: 4165 |
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If you shift manually and leave the shifter in 2nd the stock M11 and M12 will hold 2nd gear at WOT until 5800 RPM and then upshift automatically to 3rd to protect the engine. It should do that whether the kickdown solenoid is connected or not.
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blaine H
AMC Apprentice Joined: Feb/24/2012 Location: Bethlehem, Pa Status: Offline Points: 72 |
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I believe that disconnection of the kickdown switch enables the transmission to go well beyond the 5000 rpm limit in second gear. I've bracket raced my m11b in the SC/360 for many years and that's what I've done. Plug pulled out in the tranny. I usually shift at the 5300 mark but have gone to 5500 (without any improvement in et).
blaine H. |
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NHRA Div 1 Bracket Finals - 2000, 01, 02 and 07.
I may be slow but I go first! |
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akimmet
AMC Nut Joined: Aug/02/2012 Location: Republic OH Status: Offline Points: 428 |
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While this is off topic, I have some info on the Ford Borg Warner transmissions.
Cruise-O-Matic referred to all 3 speed automatic transmissions. Ford-O-Matic referred to the very early 3 speeds and all of the 2 speeds. Ford even called their own C4 and C6 transmissions Cruise-O-Matics as well. This still causes a large amount of confusion to Ford guys. Until 1967, Ford 3 speed transmissions used the perplexing green dot shift pattern. Ford had three case sizes for their Borg-Warner designed iron cased transmissions. Short (early Ford-O-Matic & FX), medium (MX), and long (LX). The longer the case, the more load it could handle. In the late 60's Ford partially re-designed the short case. Since the new short case could now handle as much load as the old medium case, Ford called this version the FMX. |
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farna
Supporter of TheAMCForum Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Offline Points: 19689 |
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FWIW, the Ford FMX is more similar to the BW M-8, as that's what it was patterned after and Ford/BW had manufacturing agreements for. The FMX is a culmination of the first Ford built/licensed BW trans, the FM, and the second one, the FX (Ford-O-Matic then Cruise-O-Matic, I believe is what Ford called them)-- hence "FMX" as it's the best features of the two earlier models. The BW M-11 and 12 are totally different from the earlier models.
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Frank Swygert
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WesternRed
AMC Addicted Joined: Aug/03/2010 Location: Australia Status: Offline Points: 5808 |
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Yes, it's interesting that mine used to be able to hold 2nd beyond that before I changed the springs unless it has something to do with the kickdown being re-connected.
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george w
Supporter of TheAMCForum Joined: Jan/27/2013 Location: New Jersey Status: Offline Points: 2899 |
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The automatic upshift to third gear, even when the lever is in "2" was a built in characteristic of these trannys. The upshift was set to occur somewhere around 5000 rpm. There was a TSB that referenced this. I'll try to find it.
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Long time AMC fan. Ambassador 343, AMX 390, Hornet 360, Spirit 304 and Javelin 390. All but javelin bought new.
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