T 18
Elder User
Joined: Jul 2005
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My Advance Adaptors book says that the T18 (ford ver) was 6.32 first gear used in 1965-75 2wd & 4wd. The T19 was 5.11 syncro first gear, and the NP435 6.69 first gear in Ford, Gm, and Dodge styles. The T18 is one stout tran. If i rember right when i rebilut the one in my jeep (ford 2wd ver) converted to 4x4 mainshaft, The bare case was like 70#.
Senior User
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AA is a a little off...the T-18 was in Ford use well after that, in Ford 4x4s especially. And there are quite a few of the NP-435 trannies with the higher (4:sumthing to 1) 1st gear ratio..but Ford did not use those as far as I know. As for the T-19...I have yet to run across one in any of the many 70-79 Ford trucks I have torn apart. In 78/79, the distribution of T-18s to NP-435s seems to run about 50/50, with no apparent reason why any truck has one or the other.
Both the NP and the BW are tough as nails.
Both the NP and the BW are tough as nails.
Senior User
Joined: Sep 2005
Posts: 359
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From: Saint Paul, MN
bmc69, thanks for the trans info on the shifter retainer. I was wondering what trans was in my old '77 F150 2wd. The shifter retainers on both my '79 CJ7 Jeep and F150 unscrew (T-18). I put an NP 435 in my '81 CJ5 Jeep and that retainer is held by two pins. All three transmissions are bullet-proof and can take a beating. When you have the transfer case in low and the trans in first you can just about climb trees. These 4 speeds are the best.
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Thanks for that info. I'll know where to keep a lookout then...I just pulled a NP-435 out of a '78 2wd F-150..but most of the trucks I take apart are 4x4s. According to my books, the 'P' code T-19 should be around in the F-series trucks from way back, at least to '73...but they sure seem to be scarce around here for some reason.
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Senior User
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I know here in central washington state I am having a hard time to find a bell housing to fit my trans and bolt up to a 400. I ask the wercking yard for a 460 too and they say that the 460 didnt come out with a 4 speed in a truck during that time. either way seems nobody where I live has one I get the same answer they are getting hard to come by
Posting Guru
Joined: Jun 2005
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From: charlotte, nc
Ive got a T18 in my 80 F250
Does anybody know of any applications that use the PTO takeoff in the side of the transmission? I was told there was one, just wondering if there is anything i can use it for.
Does anybody know of any applications that use the PTO takeoff in the side of the transmission? I was told there was one, just wondering if there is anything i can use it for.
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Originally Posted by slash31938
Ive got a T18 in my 80 F250
Does anybody know of any applications that use the PTO takeoff in the side of the transmission? I was told there was one, just wondering if there is anything i can use it for.
Does anybody know of any applications that use the PTO takeoff in the side of the transmission? I was told there was one, just wondering if there is anything i can use it for.
New User
Joined: Jan 2008
Posts: 0
Likes: 24
Quote:
Trans code F = T-18
~~~~~~~~~~~~~~~
The truck is a 78,
This decoder says different.
http://www.clubfte.com/users/mil1ion...ruckCodes.html
Trans code F = T-18
~~~~~~~~~~~~~~~
The truck is a 78,
This decoder says different.
http://www.clubfte.com/users/mil1ion...ruckCodes.html
Posting Legend
Joined: Sep 2001
Posts: 30,255
Likes: 37
Reading your post with the fine print makes my eyes hurt. Just use the default font size please.
There are many different ratios in the T-18 depending on application.
More common:
Ford, T18 (diesel) 4.02 2.41 1.41 1.00
Ford, T18 (gas) 5.11 3.03 1.79 1.00
Other ratios are available.
Put the tranny in gear and turn the input shaft 10 times and count the output revolutions.
There are many different ratios in the T-18 depending on application.
More common:
Ford, T18 (diesel) 4.02 2.41 1.41 1.00
Ford, T18 (gas) 5.11 3.03 1.79 1.00
Other ratios are available.
Put the tranny in gear and turn the input shaft 10 times and count the output revolutions.
Posting Legend
Joined: Sep 2001
Posts: 30,255
Likes: 37
That is the same size as before, use the default size in the post editor. In other words do not specify a font size! 
-Don't specify a font either...
The only time you should specify a font or a size in any forum is for emphasis of some sort.
-Don't specify a font either...The only time you should specify a font or a size in any forum is for emphasis of some sort.
Last edited by Torque1st; May 31, 2006 at 02:16 AM.