Re: [AMC-list] Was: Anyone have ...now M-3x tranny cooling

[Frank Swygert <farna@xxxxxxx>]

No hole and a smooth converter seals it -- no air cooling. Apparently only the M-35 is air cooled, guess they gave up on air cooling after 66. The 67 TSM is the only one that indicates different tranny models for different size engines (M-36 for 199, 37 for 232, 40 for 290/2V, 11 for 290/4V... in the supplement). That probably indicates that the 35 was used in 66, but may not. Pre 67 TSMs don't list trans model numbers. Don't know if the M-36 was air cooled or not, might be. 

If someone has a 67-69 American with 199 and original auto trans look at the passenger side of the bell and see if there's a large opening there. That indicates the air cooled trans, as would no cooler lines between the trans and radiator (or external cooler, usually in front of the radiator). AMC stopped using the M-3x series after 69 -- 1970 199s got a model 40. 

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Date: Thu, 11 Jun 2009 20:32:15 -0400
From: Matt Haas <mhaas@xxxxxxx>

It does not have the hole for the air inlet and the T/C didn't have 
anything on it that looked like a fan. Smooth is probably a good 
description of it. A quick look in the parts book says that it should be 
an M-37. 199 cars (which is what is in the car) got M-36's.

Matt

On 6/11/2009 9:38 AM, Frank Swygert spouted this sage advice:

> > Seems like I researched this last time it came up, maybe a year ago. The 
> > M-35 is air cooled only, the 36 and/or 37 has an extra tube inside in 
> > one corner, the 35 case isn't drilled for that tube. According to Mark, 
> > some of the 4x series were air cooled as well. Does your liquid cooled 
> > 3x have the air cooled torque converter as well as liquid cooling? If it 
> > has the big hole in the right side of the bell the answer is likely 
> > "yes". The converter has a "fan" made on it in the air cooled models, 
> > but it's not immediately recognizable as a fan. Of course a standard 
> > converter is smooth on the "back" side. I think all the M-3x series were 
> > primarily air cooled, with the liquid cooler added for additional 
> > cooling when desired/necessary (such as the heavier cars, towing, or 
> > hotter climates). Just doing a little detective work here!
--
Frank Swygert
Publisher, "American Motors Cars" 
Magazine (AMC)
For all AMC enthusiasts
http://farna.home.att.net/AMC.html
(free download available!)

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