HEH-BX VS. HEH-BT Close ratio Toploader - What are the differences?

[S7MS427]

Cory,

Certainly one of the benefits of this site is the ability to share knowledge.  Your statement that we are smarter together is spot on.  As for my memory on the HEH-BT, I gathered my information some 20 to 30 years ago.  And of course there is no accounting for inaccuracies in factory documentation.  I do try to be as accurate as possible and hate being wrong.  I apologize for any mistakes and take full responsibility for any that might pop up.

[6s1640]

Cory,

Certainly one of the benefits of this site is the ability to share knowledge.  Your statement that we are smarter together is spot on.  As for my memory on the HEH-BT, I gathered my information some 20 to 30 years ago.  And of course there is no accounting for inaccuracies in factory documentation.  I do try to be as accurate as possible and hate being wrong.  I apologize for any mistakes and take full responsibility for any that might pop up.

Hi Roy,

Well, your memory is better than your think.  I called Fred Ballard to discuss the HEH-BT Toploader and he was still certain the tranny was a wide ratio.  From my early post I said I would count teeth.  They are 32 (1st) ,31 (2nd) ,25 (3rd) and 23 (4th).  Which means the HEH-BT is, by the physical evidence, not published information, is a wide ratio.   This now clearly explains the difference between a HEH-BT and HEH-BX.  But this now brings up a similar question:  "Why did Ford drop the HEH-BT and replace with the HEH-BW".  It may have to do with the detent, springs and pins.

My question has now been answered.  I will have to call David Kee and suggest him to revise his ID chart plus email Steve at Perogie and let him know.  Its too late to fix the Ford charts.  Thank you all for the help.

Cory

[CharlesTurner]

The HEH-T is the '65 K code toploader, which the MPC has the wrong phase out date of late 1964... it was supposed to be late 1965.  There were no -BX transmissions installed in '65 K codes (non-Shelby) afaik.

I had an HEH-BT in a May '65 A code GT convertible.  I'm pretty sure it was a wide ratio.

[gt350hr]

   OK finally got here.
    BR= wide ratio , narrow pattern - tail shaft housing with "Falcon" linkage casting too.
    BT = wide pattern , wide ratio - "some" tailshaft housings with and later without Falcon linkage casting. For years there has been confusion as it being a "close" but they are WIDE ratio.
    BW = wide ratio - "Improved shift rails/detents" - Mustang only linkage mounting on tail shaft.
    The thing to remember is "whenever" a manufacturing specification changed , the tag or "build code number" HAD to change that way "proper" replacement / service parts could be had.
   "Max" ( 209L and 307L) bearings were NEVER used on assembly line transmissions , period. These were all 1-1/16 input 28 spline. The early 25 spline stuff had different numbers.
  Randy

   You guys are making me feel like a walking encyclopedia!
   

[JD]

   OK finally got here.
    BR= wide ratio , narrow pattern - tail shaft housing with "Falcon" linkage casting too.
    BT = wide pattern , wide ratio - "some" tailshaft housings with and later without Falcon linkage casting. Gfor years there has been confusion as it being a "close" but they are WIDE ratio.
    BW = wide ratio - "Improved shift rails/detents" - Mustang only linkage mounting on tail shaft.
    The thing to remember is "whenever" a manufacturing specification changed , the tag or "build code number" HAD to change that way "proper" replacement / service parts could be had.
   "Max" ( 209L and 307L) bearings were NEVER used on assembly line transmissions , period.
  Randy

  You guys are making me feel like a walking encyclopedia!
   

Respectfully - You Are!

[gt350hr]

   Naw just good retention for the last 55 years.

[shelbydoug]

   Naw just good retention for the last 55 years.

You can tell those guys in advance. They all have lots of hair.

[gt350hr]

    Yes I do , no chrome dome here.