Notices
1961 - 1966 F-100 & Larger F-Series Trucks Discuss the Slick Sixties Ford Truck

What tranny do I have

Thread Tools
 
Search this Thread
 
Old Aug 30, 2006 | 07:55 PM
  #1  
stegnr's Avatar
stegnr
Thread Starter
|
New User
Joined: Mar 2005
Posts: 10
Likes: 0
What tranny do I have

I've got a 66 f250 with an auto tranny. I've been to the parts store 3 times and can not figure out which tranny I have. The door plate says C4. I've tried a C4 and a c.o.m. gasket but neither fit. This tranny has 14 bolts in the pan and the diptick tube bolts to the pan. Any help on this one??

thanks
J
 
Reply
Old Aug 30, 2006 | 09:55 PM
  #2  
airharley's Avatar
airharley
Postmaster
Joined: Nov 2001
Posts: 3,351
Likes: 1
From: Escondido, CA
https://www.ford-trucks.com/article/...ers_Guide.html

If you still can't identify it then google search the different pans.
 
Reply
Old Aug 31, 2006 | 02:39 PM
  #3  
stegnr's Avatar
stegnr
Thread Starter
|
New User
Joined: Mar 2005
Posts: 10
Likes: 0
FMX.. i think

I think I've decided that I have a FMX.. I've heard that these are kinda light duties. Does anyone have any experience with these trannies. What would it have come out of??

thanks
jason
 
Reply
Old Aug 31, 2006 | 03:05 PM
  #4  
airharley's Avatar
airharley
Postmaster
Joined: Nov 2001
Posts: 3,351
Likes: 1
From: Escondido, CA
I had an FMX in my truck when I first bought it. I didn't think too much about it since the engine was a P.O.S. I can tell you that they are HEAVY, cast iron case.
 
Reply
Old Aug 31, 2006 | 03:45 PM
  #5  
stegnr's Avatar
stegnr
Thread Starter
|
New User
Joined: Mar 2005
Posts: 10
Likes: 0
not a FMX..

O.K. now I am completely frustrated.. This is not a FMX.. The parts store believes it to be a small or medium case crusieomatic.. Any thoughts on these

j
 
Reply
Old Aug 31, 2006 | 05:51 PM
  #6  
jowilker's Avatar
jowilker
Fleet Owner
25 Year Member
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
Club FTE Silver Member

The C-O-M was the automatic installed from the factory, and there will be a green dot on the selector.

After having said that, a different tranny could have been swapped in since it was new.

John
 
Reply
Old Aug 31, 2006 | 08:40 PM
  #7  
gangstakr's Avatar
gangstakr
Logistics Pro
Joined: Dec 2004
Posts: 4,651
Likes: 60
From: Hemet ca.
What position do you put the selector in to take off in? Do you put it in "drive"? If so, is it a bit sluggish? Drop one more on the selector and you start better and it shifts better. By the way, what engine do you have?
 
Reply
Old Aug 31, 2006 | 10:26 PM
  #8  
airharley's Avatar
airharley
Postmaster
Joined: Nov 2001
Posts: 3,351
Likes: 1
From: Escondido, CA
Find some casting #'s on the case and we might be able to get an answer. The more the better.
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

10 Ugly Ford Trucks That We Still Kinda Love

 Joe Kucinski
story-1

10 Things Every Truck Owner NEEDS (2026 Edition)

 Michael S. Palmer
story-2

Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

 Verdad Gallardo
story-3

Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

 Joe Kucinski
story-4

2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

 Brett Foote
story-5

Top 10 Ford Truck Tragedies

 Joe Kucinski
story-6

AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

 Brett Foote
story-7

Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

 Michael S. Palmer
story-8

Ford's 2001 Explorer Sportsman Concept Looks For a New Home

 Verdad Gallardo
story-9

10 Best Ford Truck Engines We Miss the Most!

 Joe Kucinski
Old Sep 1, 2006 | 06:02 AM
  #9  
jowilker's Avatar
jowilker
Fleet Owner
25 Year Member
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
Club FTE Silver Member

Originally Posted by gangstakr
What position do you put the selector in to take off in? Do you put it in "drive"? If so, is it a bit sluggish? Drop one more on the selector and you start better and it shifts better. By the way, what engine do you have?
I don't think an auto (C-O-M) was installed behind anything but a 352 in 65.

John
 
Reply
Old Sep 1, 2006 | 06:22 AM
  #10  
garbz2's Avatar
garbz2
Post Fiend
Joined: Nov 2000
Posts: 6,060
Likes: 7
From: Glendale Arizona
The COM medium duty was installed behind the 352, 300 six and also the 240.

The 240 COM was installed for F100 and 250 duty and 300ci in F350s and up.

For 66 you could also have the 300 in the F100 and 250 with a COM.

Garbz
 
Reply
Old Sep 1, 2006 | 08:09 AM
  #11  
PROSTOCK's Avatar
PROSTOCK
Cargo Master
20 Year Member
Photogenic
Photoriffic
Shutterbug
Joined: Feb 2004
Posts: 2,070
Likes: 169
From: Central Texas
No one mentioned the possibility of a C6, wouldn't be stock, of course, but it is possible. It is the natural replacement choice.
 
Reply
Old Sep 1, 2006 | 09:00 AM
  #12  
jowilker's Avatar
jowilker
Fleet Owner
25 Year Member
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
Club FTE Silver Member

Originally Posted by garbz2
The COM medium duty was installed behind the 352, 300 six and also the 240.

The 240 COM was installed for F100 and 250 duty and 300ci in F350s and up.

For 66 you could also have the 300 in the F100 and 250 with a COM.

Garbz
Dave, Have you personally seen those installations? In all of my travels I have yet to see one behind anything but a 352.

Prostock, It would be a few years yet before the C6 was installed in trucks.

John
 
Reply
Old Sep 1, 2006 | 09:47 AM
  #13  
garbz2's Avatar
garbz2
Post Fiend
Joined: Nov 2000
Posts: 6,060
Likes: 7
From: Glendale Arizona
Seeing as i have a 66 F250 sitting outside the garage that came from the factory with a 240 Cruise O Matic and a 410 gear set I can say yes i have personally seen it.

I also parted a 66 300 six equipped F100 this spring. Stock Cruise o Matic and 3.70 gears.

Some trucks also came with a C4 but i have not yet scrounged a factory one up. The factory manuals say they were avalible behind the 240s.

Garbz
 
Reply
Old Sep 1, 2006 | 11:23 AM
  #14  
jowilker's Avatar
jowilker
Fleet Owner
25 Year Member
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
Club FTE Silver Member

I figgured you had seen one, I guess the farmers in NC area didn't have any use for them.

The factory manuals have been know to say a lot of things were available when they weren't.

John
 
Reply
Old Sep 1, 2006 | 11:27 AM
  #15  
stegnr's Avatar
stegnr
Thread Starter
|
New User
Joined: Mar 2005
Posts: 10
Likes: 0
Thanks for all the input. This site is great for the slick guys out there. I'm heading to a tranny parts supplier for the final answer..

thanks again
Jason
 
Reply



All times are GMT -5. The time now is 05:25 AM.

story-0
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-1
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-2
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-06-03 11:38:36


VIEW MORE
story-3
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-4
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE
story-5
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-6
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-7
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-8
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-9
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE