Well, I finally got me a pickup.

93 F250, XLT, x-cab, 351W, 5 speed.

Trying to identify the transmission. CODE W on the b-pillar.

Is this the 5 speed HD, or the ZF? I believe it's the HD.

 

There were two 5-speeds: the ZF and the M5OD. Since you have an F250, it's likely the ZF (the heavier-duty of the two). I'm not 100% on that, as they may have put the M5OD in the lighter-duty F250s, but if yours is the 8800 lb GVWR model, then you're definitely sitting on a ZF.

Jason

 

The GVWR is 8800 lbs.

 

From 95 manual W is 5 spd HD overdrive (M5OD-HD) (ZF).

 

Sorry guys.............guess I'm a little thick.

So is the tranny a M50D HD? or a ZF? Or are they the same?

 

95 Manual lists 3 manual transmissions
Code M Mazda M5OD This is light duty Mazda- under 8500 GVW 4.9 and 5.0
Code C Mazda close ratio (Z-F) F series with 7.3 Diesel over 8500 GVW
Code W Mazda HD 5 speed OD (M5OD-HD) (ZF) All F Series over 8500 GVW except Diesel.
ZF model designation is S5-42 ZF; Stands for sychronized, 5 speed and 420 ft# of torque input.
Your answer is yes and yes.

 

I have never seen any literature with ZF attached to the Mazda name. I do not believe the ZF is associated with that brand.

The Mazda M5OD (also known as the M5R2) is a light duty F-150 trans. It was only in an F-250 behind the 302, which was a light duty F-250. The ZF is a heavy duty truck transmission with a low first gear ratio. The mazda does not have a low first gear ratio (aka granny gear) which makes it a poor choice for heavy work.

The Diesel simply had a ZF with different gear ratios and bell pattern. A diesel operates at different RPM which would require a transmission with different gear ratios.

 

I've seen various bits of documentation that refer to the ZF as a M5OD-HD, but you're right in that the two companies and transmissions have NOTHING to do with one another. Some genius in the marketing department came up with it, is my guess.

 

or it was a typo.

 

My 95 Ford dealership manual makes no similarities to the two transmissions.

 

I'm guessing the 'M' stands for 'Manual', not 'Mazda', just as in the AOD, the 'A' stands for 'automatic'. Therefore, the ZF 5-speed could still be called a M5OD (Manual 5-speed w/OverDrive), but gets the 'HD' clarifier. Still easier to call it a ZF.

Jason

 

Agreed, the W code in 95 manual says "Manual - 5 speed H- D. Overdrive (M5OD-HD) (Z-F). The (Z-F) is in the same context area as (Mazda) which follows M5OD for code M in transmission listings.
Sorry - my assumption.
Possibly Z-F is symbol for manufacturer of that transmission - guess?? I notice tag for Z-F transmission has Ford logo along with ZF logo. FWIW.

 

Google says ZF is a German company that makes many powertrain components, as well as many other products.

 

Are the M5OD and the ZF interchangeable ??