Transmission Cover Differences
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Cargo Master
Joined: Aug 2015
Posts: 2,074
Likes: 101
From: Marana, Arizona
Transmission Cover Differences
My trans cover in my F3 fit over the original T9 as designed. Had a foam seal and plate on top trans that fit against bottom of cover.
I swapped in the T98 and it is too tall and the cover will not bolt down. The foam seal and plate from the 50 F6 is exactly the same as my 52 F3 T9.
I started to cut the shifter hole bigger but I think I really need to raise the entire hump for it to work like it was. Even the hole for the parking brake lever needs to be higher up. The bolt holds the cover up.
Does the F6 trans cover have a taller hump in it? I have a couple guys checking to see if they have one. I don't want to waste their time if the covers are the same.
If they are the same the cab must sit higher on frame or trans lower on the F6.
I swapped in the T98 and it is too tall and the cover will not bolt down. The foam seal and plate from the 50 F6 is exactly the same as my 52 F3 T9.
I started to cut the shifter hole bigger but I think I really need to raise the entire hump for it to work like it was. Even the hole for the parking brake lever needs to be higher up. The bolt holds the cover up.
Does the F6 trans cover have a taller hump in it? I have a couple guys checking to see if they have one. I don't want to waste their time if the covers are the same.
If they are the same the cab must sit higher on frame or trans lower on the F6.
Cargo Master
Joined: Aug 2014
Posts: 2,594
Likes: 72
From: North Central Arkansas
Scott, I believe all the covers are the same. Are you using a T98 out of an F4 or larger truck? The T98 transmission mount/bearing retainer is taller on the larger trucks than on the F2-F3, at least that is what I have been told. The mount on the T98 that I installed in my F4 is about 3/8" shorter than the one on the T9 that I took out, so I had to shim mine. I haven't tried to install the cover yet though.
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Cargo Master
Joined: Aug 2015
Posts: 2,074
Likes: 101
From: Marana, Arizona
Thanks for the reply Mark. My T9 sits lower than my T98 by about that much at least.
I have been bugging a couple other members that are selling parts to check the covers they have. Now I feel bad to have wasted their time.
I guess I'll be raising my cover up a bit to fit properly. Not a huge deal. I just thought I could save some time and effort bolting a taller one on.
I don't know if shaving the mount that much is an option or worth the trouble.
Thanks again. At least I have an answer and a plan.
I have been bugging a couple other members that are selling parts to check the covers they have. Now I feel bad to have wasted their time.
I guess I'll be raising my cover up a bit to fit properly. Not a huge deal. I just thought I could save some time and effort bolting a taller one on.
I don't know if shaving the mount that much is an option or worth the trouble.
Thanks again. At least I have an answer and a plan.
Hotshot
Joined: Oct 2009
Posts: 16,174
Likes: 4,782
From: Burbank, WA
You made me curious so I had to check the Ford Body Parts Catalog. It shows 3 different part numbers for the floor cover, one for F1-3, one for F4-6, and one for F7-8. It makes no difference which transmission is used, so that shouldn't be what's different. I'll have to look and compare the different parts to see if there is a different shape. I wasn't aware of any differences other than holes for shifter and brake lever, but never held up covers from different models, side by side. I have at least one of each in stock.
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Cargo Master
Joined: Aug 2015
Posts: 2,074
Likes: 101
From: Marana, Arizona
The cover on my 48 F2 looks "about" the same height as my 52 F3. The only obvious difference is no hump and slotted hole for the brake lever. The 48 F2 has a lever under the dash.
The issue I have is not so much the size or location of the shifter or brake lever holes. They line up perfectly. It is because the "hump" in the cover is not tall enough to clear the top of the T98 cover or the bolt and nut holding the brake lever on.
I started to cut a larger hole in the cover only to realize I should have left it as is and cut and raised the entire hump part of it instead. That way I can retain the foam seal and metal plate and stock shift boot if it has one.
The issue I have is not so much the size or location of the shifter or brake lever holes. They line up perfectly. It is because the "hump" in the cover is not tall enough to clear the top of the T98 cover or the bolt and nut holding the brake lever on.
I started to cut a larger hole in the cover only to realize I should have left it as is and cut and raised the entire hump part of it instead. That way I can retain the foam seal and metal plate and stock shift boot if it has one.
Hotshot
Joined: Oct 2009
Posts: 16,174
Likes: 4,782
From: Burbank, WA
This leads me to believe you have an issue with the trans mounting, not the cover. While there are different part numbers for the different applications mentioned above, there is no shown difference with the T9 or T98 transmissions. If the T98 had a taller hump, that would have been called out as a separate application.
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FTE Chapter Leader
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From: Crossville, Tn
I don't know if it will work to solve your problem, but Classic Haulers sells a taller cover (supposed to be for Automatic Trans.)
1948-52 Ford F-100 Transmission Hole Cover Taller 4852
1948-52 Ford F-100 Transmission Hole Cover Taller 4852
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Cargo Master
Joined: Aug 2015
Posts: 2,074
Likes: 101
From: Marana, Arizona
Wayne, you are correct as far as a mounting issue. The T98 sits higher than my T9 enough that my fan started hitting the bottom of my shroud. So I need to deal with that. I also had to heat and bend the shifter because it hit the dash. It does look like the PO of the T98 had modified the bend so I don't know if it would have been a problem with a stock shift lever.
What gets me is off all the T98 swaps that have been done, no one mentions any of these issues. They are not big issues but, they need to be addressed.
I looked at the cross member to see if I could modify it. I think I'm going to end up modifying my cover. Things will still look stock. I looked at the floor mats and they seem to be a loose enough fit that raising the cover a little shouldn't affect it.
As always I appreciate the input. Thanks for that link Joe.
What gets me is off all the T98 swaps that have been done, no one mentions any of these issues. They are not big issues but, they need to be addressed.
I looked at the cross member to see if I could modify it. I think I'm going to end up modifying my cover. Things will still look stock. I looked at the floor mats and they seem to be a loose enough fit that raising the cover a little shouldn't affect it.
As always I appreciate the input. Thanks for that link Joe.
Cargo Master
Joined: Aug 2014
Posts: 2,594
Likes: 72
From: North Central Arkansas
Scott, I just went to the shop and checked my cover and it fits fine. It has enough room between the cover and transmission top to install the plate and foam piece. I will have to move the slots for my parking brake and PTO levers farther back. since the T98 is a couple of inches longer. I would imagine the differences in the covers 52Merc found would be the holes for the brake lever and the gearshift lever as not all trucks would have either one or both of them. Maybe someone here has a rear transmission mount/bearing retainer for an F2- F3 that they would trade you.
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Cargo Master
Joined: Aug 2015
Posts: 2,074
Likes: 101
From: Marana, Arizona
I didn't realize the T98 had different height rear mounts. I realize the 53 up need bell housing mounts.
It's also weird that yours bolts down but, the holes don't line up. Mine lines up perfectly with the holes but, doesn't bolt down.
If somebody has a different mount that would be great. If not I think I can fab up a new cover easier than adding an inch or so to raise mine.
It's also weird that yours bolts down but, the holes don't line up. Mine lines up perfectly with the holes but, doesn't bolt down.
If somebody has a different mount that would be great. If not I think I can fab up a new cover easier than adding an inch or so to raise mine.
Hotshot
Joined: Oct 2009
Posts: 16,174
Likes: 4,782
From: Burbank, WA
The other thing to consider with the engine/trans not being at the stock angle, is that it will no longer match the pinion angle on the rear end. That can cause driveshaft vibration and/or premature u-joint failure.
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Cargo Master
Joined: Aug 2015
Posts: 2,074
Likes: 101
From: Marana, Arizona
I will check it tomorrow Wayne. My drive shaft is supposed to be done tomorrow. Had the front section shortened for the T98 and the rear section for the Dana 60.
I have a free angle finder app on my phone. Works great for checking drive-line angles. Used it when setting up my pinion angles in my rock crawlers.
I put new motor mounts in today too. Took care of my fan hitting the shroud so the angle has improved some.
I noticed the cross member has a convex surface around the rear mount bolt holes where the trans mount sits. If I heated it and pounded them down flat I could drop the trans a bit in the rear. I'd have to pull the trans to do it and that ain't gonna happen at this point. UNLESS my drive line angles say otherwise.
Maybe when the engine and trans come out for overhaul. This is the kind of stuff I'm trying to work out BEFORE I do body work and paint.
I have a free angle finder app on my phone. Works great for checking drive-line angles. Used it when setting up my pinion angles in my rock crawlers.
I put new motor mounts in today too. Took care of my fan hitting the shroud so the angle has improved some.
I noticed the cross member has a convex surface around the rear mount bolt holes where the trans mount sits. If I heated it and pounded them down flat I could drop the trans a bit in the rear. I'd have to pull the trans to do it and that ain't gonna happen at this point. UNLESS my drive line angles say otherwise.
Maybe when the engine and trans come out for overhaul. This is the kind of stuff I'm trying to work out BEFORE I do body work and paint.
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Cargo Master
Joined: Aug 2015
Posts: 2,074
Likes: 101
From: Marana, Arizona
Here is the area I'm talking about. It looks like I could flatten that convex area and shorten the mount or whatever is sticking up from the bottom. Would help a little.
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Cargo Master
Joined: Aug 2015
Posts: 2,074
Likes: 101
From: Marana, Arizona
Here is how it sits with the hole cut bigger. You can see the tin plate that the foam seal sits on. It is in its normal location.
The bolt had to come out of the brake lever for the cover to go on. It sits about even with the bolt hole in the lever.