Transmission questions
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Senior User
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From: Texas
Transmission questions
I'm Swapping from a 3 on the tree to a T98. I have the correct bell housing for the swap, and few of the parts I need, but one glairing problem still faces me.
The 3speed has its mount on the rear side, with a cross member. the T98 has no place to bolt a mount to it.
I can move the cross member easy enough to where ever it needs to be, but how to I attach a mount to the transmission?
The truck is a 66 F100 LWB, 2wheeldrive with a 352
The 3speed has its mount on the rear side, with a cross member. the T98 has no place to bolt a mount to it.
I can move the cross member easy enough to where ever it needs to be, but how to I attach a mount to the transmission?
The truck is a 66 F100 LWB, 2wheeldrive with a 352
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Joined: Apr 2005
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From: Northwest Georgia
66, your engine trans combination uses a three point mounting system with two mounts on the engine and a trans mount. A 64 or earlier system uses a three point system where two mounts are on the Bellhousing and a mount in front of the engine. I really cant answer your question but with your mount setup as is you cant just let the trans hang off. I sure someone has the answer here.
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From: Texas
Actualy, I wanted the Granny gear. I've run into too many situations were nothing but a lower gear will do, from backing my truck through the 7 and a half foot gap between the house and the fence, up hill, with 2000 pounds of topsoil in the bed, to fighting Dallas traffic, were first gear is far too high for the 1 MPH trafic speeds on HWY 75.
An Automatic would probably have been a better option, but I enjoy driving stick.
It looks like the bell housing has mounts on it, but the motor it came from had its mounts on the front of the block. Mine are in the normal place, mid block. If I fabricate something to hold mounts at the bell housing, will they be too close to the motor to be effective?
An Automatic would probably have been a better option, but I enjoy driving stick.
It looks like the bell housing has mounts on it, but the motor it came from had its mounts on the front of the block. Mine are in the normal place, mid block. If I fabricate something to hold mounts at the bell housing, will they be too close to the motor to be effective?
Logistics Pro
Joined: Oct 2005
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From: Mddl A MexCans
I would think maybe having a bracket of aluminum migged onto the tranny in the right place to line up with you existing cross member if possible or wherever possible might do the trick. But welding on a tranny ? I dunno if it might hurt the tranny.. I doubt it..
I do think the "*****" of that motor need a brace on the tranny..
I do think the "*****" of that motor need a brace on the tranny..
Logistics Pro
Joined: Mar 2005
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From: tujunga, calif
sounds like the trans pre 65, so you will also run into input shaft problems, you need a np trans from 65 up to swap
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Joined: Apr 2002
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From: Coal country
The T-98 was used at least to '66, if not later. It should (operative word here is "should") have a spot to bolt the tranny mount to. Usually, it is a flat spot, with two hold for bolts. As a matter of fact, it should look the same as what is on your 3-speed transmission now.
Obsa is correct, '64 and earlier use a different mounting system than your '66.
Your '66 has a transmission crossmember for the transmission to bolt to. You need that mount point to keep the engine/transmission combination from skewing or yawing sideways, especially under load.
HiBall is also correct, that an NP 435 will work well. The T-18 also has the granny gear of the T-98 and NP-435. (Maybe not the exactly same ratio, but at that low, who cares!)
Perhaps you have an earlier transmission which was not made with that mount point??
Obsa is correct, '64 and earlier use a different mounting system than your '66.
Your '66 has a transmission crossmember for the transmission to bolt to. You need that mount point to keep the engine/transmission combination from skewing or yawing sideways, especially under load.
HiBall is also correct, that an NP 435 will work well. The T-18 also has the granny gear of the T-98 and NP-435. (Maybe not the exactly same ratio, but at that low, who cares!)
Perhaps you have an earlier transmission which was not made with that mount point??
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From: Texas
As I was told when I bought it, it originaly came out of a 67 4x4 (but it has no flange for a transfer case, so I don't know) that used a mount on the bell housing as well, or so I'm told. The bolt pattern and starter clearance seem to be for an early FE. There doesn't seem to be a flat spot on the back side of the transmission to bolt anything to, but I may not be looking at it right. when I got it, it was on the back of a 390 bolted into a 60 f100 with home made engine mounts of angle iron and half inch flat plate.
Anyone have a picture of one with a mount?
Whats the problem associated with the input shaft?
Anyone have a picture of one with a mount?
Whats the problem associated with the input shaft?
Logistics Pro
Joined: Mar 2005
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From: tujunga, calif
without pics its hard to tell, but the 64 and earlier trans just mounted to the bellhousing, there was no mount for the crossmember, sounds like the 390 was bolted to the original 4 spd, if thats the case, its input shaft is longer and won't work with the 65 and later bell housing as far as I know
JIM
JIM
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