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BorgWarner M44 |
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Snake Oiler
AMC Apprentice Joined: Feb/09/2019 Location: NOVA Status: Offline Points: 40 |
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Posted: Feb/09/2019 at 3:28pm |
Hello all, I just got a 71 Javelin SST from a shop owner that is retiring. All is mostly fine with the car except he took out the M44 and said that the 2nd gear sleeve and drum is worn bad. I need those parts and a rebuild kit for the trans. It seems as if there is not a lot of info on the M44 online, so I landed here. I called some old trans, and some newbies haven't even heard of this model. While I have heard of it, it is not in the same conversations as the 727,904,450 etc. Any direction here would be appreciated. Thank you
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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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What engine do you have?
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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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Snake Oiler
AMC Apprentice Joined: Feb/09/2019 Location: NOVA Status: Offline Points: 40 |
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304, but I was told it was hopped up a bit with a cam change, and it has headers and true duals.
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farna
Supporter of TheAMCForum Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Offline Points: 19611 |
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M44 is about the same as the M35, just a bit stronger. You can get wear parts from Northwest Transmission (www.nwtpats.com). You may have to call. They list the T-35 (M-35) and a T-65, which was used in Australia and Europe under that designation. Count the oil pan bolts and see which one yours corresponds to (15 for M-35, 12 for M-65), or call them. The internal parts interchange (clutches and bands, gaskets and seals), but the drum and such may be different -- and very hard to find NOS. You may have to get another trans or find someone with a good used drum from a parts trans. Your other option is to ditch the BW trans and go with a 998, 999, built-up 904, or 727. I'd use in that order of preference. The 727 is the most bullet proof, but also takes 2x the power to just turn it over. It will take 10-15 hp more than the others. 998s are used behind stock 304s and in Eagles (4x4 of course), 999s in Jeep Wranglers (again, 4x4). I think a 904 output shaft and housing will work with a 998/999, but you need to check with shops/people more familiar with the 2WD conversion. 904s are used in all 72+ six cylinder cars (except big cars, which I think used a 998, and some rare HD optioned cars which used a 727 behind the six). You will need an adapter, but the AMC vendors sell a bolt-in one. In the end the swap to a TF might be the best bet, especially if you intend to "play" with the car a bit and keep it a long time.
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Frank Swygert
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401MATCOUPE
AMC Addicted Joined: May/20/2010 Location: Salisbury, MD Status: Offline Points: 5368 |
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If you can get me a picture of what you need, I have a lot of parts for those trans on the shelf. Maybe a picture from the Technical Service Manual OR send me pic of the actual part via Private Message.
Ross
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Ross K. Peterson
68X,GoPac,343,AT,52A(1stCar) 68X,GoPac,390,4sp,52A 69X,GoPac,390,4sp,64A 70X,GoPac,390,4sp,87A,8 70X,GoPac,390,4sp,BBO,8 70 Jav SST,390,AT,BSO 74MatX,401,AT,Prototype 74MatX,401,AT |
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Snake Oiler
AMC Apprentice Joined: Feb/09/2019 Location: NOVA Status: Offline Points: 40 |
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Thanks to all who responded. I called a NASCAR engine builder I know, and he sent me to a guy who rebuilds transmissions. I dropped it off to him and he was surprised that the main body of the transmission was aluminum and not cast iron. So he was doubting it was an M44 as it looked like one, but he said usually the center is cast while the bell housing and stem are aluminum. Anyway he concurred that 2nd gear was shot. He quoted $600+parts to rebuild and said he would be in contact if he needed any parts that he could not find. So I might be reaching out to a few of you on this. Thanks!
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304-dude
AMC Addicted Joined: Sep/29/2008 Location: Central Illinoi Status: Offline Points: 9081 |
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Mine is aluminum... It's pre 71 trannies that have iron centers. So I should be able to bench press that puppy when I get under it to pull the thing. It shouldn't be as far as the complete th400 with converter, starter and flexplate, that I had placed in my javelins trunk. |
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71 Javelin SST body
390 69 crank, 70 block & heads NASCAR SB2 rods & pistons 78 Jeep TH400 w/ 2.76 Low 50/50 Ford-AMC Suspension 79 F150 rear & 8.8 axles Ford Racing 3.25 gears & 9" /w Detroit locker |
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farna
Supporter of TheAMCForum Moderator Lost Dealership Project Joined: Jul/08/2007 Location: South Carolina Status: Offline Points: 19611 |
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Then he doesn't know Borg Warner transmissions as well as he thought. All the M3x and M4x are all aluminum. They were only used behind sixes and the smallest V-8 with 2V carbs only. V-8s with a 4V from the factory got the tougher M-1x series (M-11 or M-12, depending on year). But don't fret!! If he knows the M-1x series he also knows the M-3x/4x!! They were all essentially the same design, the M-3x and 4x just used the AL case and some lighter parts inside. Same gasket set applies to both, though there are a few subtle differences accounted for by having 2-3 gaskets for the same thing. That same gasket set also applies to the earlier M-8 and "M-10" as well as the early Ford trannys up to and including the FMX, which are license built Borg-Warner designs. Ford didn't deviate much from the BW design until their C-4 and C-6 came out. I mention "M-10" in quotes because I'm pretty sure that wasn't the official designation. It's used to refer to the TV cable version of the M-8 which was used in 63-66 V-8 cars. I forget the model number on those trannys, but I think it's something like M-8-x.... Don't have one on hand and haven't seen one without the screen printed label too damaged to read. The printing usually fades/dissolves from years of tranny fluid/elements exposure or attempts to clean with solvent.
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Frank Swygert
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1971JavelinSST
AMC Fan Joined: Jun/07/2017 Location: New York Status: Offline Points: 8 |
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Thanks for the info on the BW M44
Would anyone recommend a particular brand of filter and gasket set for my 71 304 automatic? - Mechanic has my car and asked me to get them. Also, should he refill it with Dexron III or IV ? Any suggestion/info would be greatly appreciated!
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401MATCOUPE
AMC Addicted Joined: May/20/2010 Location: Salisbury, MD Status: Offline Points: 5368 |
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These trans do not have filter but rather a brass screen, most of the time they can cleaned....BUT the screens break, if you need a new screen I have NOS ones available, Just send me a PM.
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Ross K. Peterson
68X,GoPac,343,AT,52A(1stCar) 68X,GoPac,390,4sp,52A 69X,GoPac,390,4sp,64A 70X,GoPac,390,4sp,87A,8 70X,GoPac,390,4sp,BBO,8 70 Jav SST,390,AT,BSO 74MatX,401,AT,Prototype 74MatX,401,AT |
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