Transmission
I'll have the Roast Duck
Joined: Jul 2002
Posts: 9,622
Likes: 110
From: Northshore, MN
Lead Driver
Joined: Oct 1999
Posts: 6,779
Likes: 557
From: Kalispell, MT
So which crossmember does 52-F2 have with the HD 3 spd?
I think the deep one is required with the trans mounted e-brake.
Havi's pic from an F2 must have been an early one with the cable e-brake, right? You can see the foot where it mounted on the deep x-member but it doesn't have provision for the e-brake.
I'd say there's plenty of room for a T5 in the space.
btw, the 52 F6 with a synchro 4 spd uses the same x-member and mounting foot - I didn't get a pic as it's 8 miles up the draw at my son's place.
I think the deep one is required with the trans mounted e-brake.
Havi's pic from an F2 must have been an early one with the cable e-brake, right? You can see the foot where it mounted on the deep x-member but it doesn't have provision for the e-brake.
I'd say there's plenty of room for a T5 in the space.
btw, the 52 F6 with a synchro 4 spd uses the same x-member and mounting foot - I didn't get a pic as it's 8 miles up the draw at my son's place.
Fleet Owner
Joined: Jul 2004
Posts: 27,299
Likes: 1,059
From: NM
I'd assume an F-2 with MD 3-sp has the same crossmember as an F-1 w/the LD 3-sp. It would be nice to confirm. I see what you mean, the foot on Havi's is clearly for a deep hoop c'member. That almost looks like a LD 3-sp from an early (floor-shift) Bonus Built, which would be even more confusing 
I'll have the Roast Duck
Joined: Jul 2002
Posts: 9,622
Likes: 110
From: Northshore, MN
It's an early F2, yep. The manual says the 3sp. HD is optional for the F2, but not the LD, or MD.... 4sp. being standard (and 4sp. being optional with the F1)
F1 case I have has the top removed and shows straight cut gears. It is an identical shaped case as the F2 pictured, and as the F6 in my '50 dumptruck. T-8-D-1A
F1 case I have has the top removed and shows straight cut gears. It is an identical shaped case as the F2 pictured, and as the F6 in my '50 dumptruck. T-8-D-1A
Fleet Owner
Joined: Jul 2004
Posts: 27,299
Likes: 1,059
From: NM
I guess I didn't realize there were 3 three-speeds. Is the HD a spur-gear tranny? What B-W # is it (i.e., T-xx)
I'm confused Havi, what trans from an F-1 has straight cut gears; it would have to be the 4-sp to have been in a F-1?
I'm confused Havi, what trans from an F-1 has straight cut gears; it would have to be the 4-sp to have been in a F-1?
Welder User
Joined: Feb 2009
Posts: 5,269
Likes: 50
From: northwest MT
Maybe it was a regional thing...
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Fleet Owner
Joined: Jul 2004
Posts: 27,299
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From: NM
Floor-shift 3-sp's were standard until '50, then they went to column shift ("remote control") from '51-on. I knew there was a floor shift medium duty 3-sp, this is the first I've heard of a 3-sp HD trans. Learn something new every day!
Lead Driver
Joined: Oct 1999
Posts: 6,779
Likes: 557
From: Kalispell, MT
Ross, what you call the MD is listed in the operator's manual and shop manual as the HD 3 spd. We're both talking about the T87D. There are only 2 synchro'd 3 spds.
Afaik the LD 3 was made in floor (thru 50) and column shift (50-on) versions.
Also the HD 3 was made in both floor (trucks) and column (stepvans) varieties.
The 4 spd spur gear was only floor shift and was used in everything.
Afaik the LD 3 was made in floor (thru 50) and column shift (50-on) versions.
Also the HD 3 was made in both floor (trucks) and column (stepvans) varieties.
The 4 spd spur gear was only floor shift and was used in everything.
Lead Driver
Joined: Oct 1999
Posts: 6,779
Likes: 557
From: Kalispell, MT
Yes, the last two pics I posted are of my 48 F1 that has the HD 3 spd (T87D) trans.
New User
Joined: Mar 2012
Posts: 8
Likes: 0
Rear trans mount bracket
Here's a couple pics. 1st is from my F1, the second is from a donor F2. The 4sp in my '50 F6, and the T98 from my donor F6 all have the same bolt pattern for the rear mount, except for the height/drop of the mount part for the crossmember depth.
Now, a long time ago, I installed a T19 and a Ford 400 into my F1, and it fit lengthwise, and the t19 lined up pretty good, just would have needed to use the F2 crossmember and drilled new holes and shimmed the height (rubber). Bend the shifter back a little bit, too. The T19 came from a 1986 F250 2wd behind a 300 I6.
Now, a long time ago, I installed a T19 and a Ford 400 into my F1, and it fit lengthwise, and the t19 lined up pretty good, just would have needed to use the F2 crossmember and drilled new holes and shimmed the height (rubber). Bend the shifter back a little bit, too. The T19 came from a 1986 F250 2wd behind a 300 I6.
thanks
I'll have the Roast Duck
Joined: Jul 2002
Posts: 9,622
Likes: 110
From: Northshore, MN
Welcome to FTE! The F1 4sp. would be a spur gear, unlike the F6 T98. T98's never came behind the F1 or F2, so the T98 doesn't come into play here at all. The 4sp. between the F1 and F2 are the same, just the back cover with the trans mount is different. It should say T8, or T8 D cast into the case. These trannies were available in everything from F1 up through F6. As you may know the bigger trucks have the drum park brake attached. I would assume if you just leave the drum off, and leave the "ears" for the drum exposed (cast into the trans mount), you could still use the driveshaft yoke. I haven't done this, so I can't say with certainty, sorry. If it's a T98 you have the mount from, it will not line up with the crossmember's original holes if installed on the T8 tranny. The speedo should hook up, as it sits between the case and the drum, and should be the same for all 4sp. trannies.
New User
Joined: Mar 2012
Posts: 8
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rear case
Welcome to FTE! The F1 4sp. would be a spur gear, unlike the F6 T98. T98's never came behind the F1 or F2, so the T98 doesn't come into play here at all. The 4sp. between the F1 and F2 are the same, just the back cover with the trans mount is different. It should say T8, or T8 D cast into the case. These trannies were available in everything from F1 up through F6. As you may know the bigger trucks have the drum park brake attached. I would assume if you just leave the drum off, and leave the "ears" for the drum exposed (cast into the trans mount), you could still use the driveshaft yoke. I haven't done this, so I can't say with certainty, sorry. If it's a T98 you have the mount from, it will not line up with the crossmember's original holes if installed on the T8 tranny. The speedo should hook up, as it sits between the case and the drum, and should be the same for all 4sp. trannies.
Thanks for your help.