C-6 trans in my 66
C-6 trans in my 66
c-6 trans in my 66 3speed f-100 will the center hump clear the trans? Just getting ready to install a replacement hump- the old one was destroyed by a previous owner.
Re: C-6 trans in my 66
Shouldn't be a problem
1965 F250 352 4spd/Dana 4.10 (sold)
1991 Porsche 964 Cabriolet
2006 Cheby Silverado
2011 Jeep Grand Cherokee - yeah, it's a HEMI
1991 Porsche 964 Cabriolet
2006 Cheby Silverado
2011 Jeep Grand Cherokee - yeah, it's a HEMI
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William-in-St George
- Posts: 579
- Joined: December 31, 2009, 5:26 pm
- Location: Saint George Utah
Re: C-6 trans in my 66
You can fudge a bit of clearence under the cab supports, or use a C6 without the reinforcement web at the top of the case and a BFH will help as well. The last one I did got a little grinder action on the webs and a BFH on the floor. The bulge in the floor pan looks like it belongs there.
William-in-St. George
Re: C-6 trans in my 66
Thanks guys I'm trying to keep the floor as clean as possible with new pans and mounts and replacing the hump with a clean one from a donor cab. I learned a valuable lesson by reading the hints and tricks forum and put my cab on it's back. Been spending way to much time on the passenger floor with the cab on saw horses sitting on the floor and welding overhead. I guess old dogs can learn new tricks!
Re: C-6 trans in my 66
A C-6 fit fine in my 66' with no modifications, using the factory mounts. There is one thing to be aware of and that is you will not be able to remove the the transmission out the rear due to the rear crossmember. I cut my crossmember and made it removable.
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banjopicker66
- Posts: 1488
- Joined: July 17, 2006, 1:59 pm
- Location: Middlesboro, KY
Re: C-6 trans in my 66
The previous post raises a good point. I think, though, the center crossmember between the I-Beam pivot points is the one referred to, not the rear one that supports the transmission.
It is indeed impossible to remove an automatic transmission without removing that crossmember. In fact, if the truck came from the factory with an automatic transmission, the crossmember was bolted to the pivot points, not riveted.
A manual transmission equipped truck left the factory with the center crossmember riveted to the pivots.
This is easy to fix for installing and removing an automatic transmission.
Obtain a small grinder and grind off the heads of the rivets - there will be 4 of them, 2 to a side.
Drive the rivets up and out.
Remove the 2 bolts in the upper rail (for both automatic and manual transmissions) and slide the crossmember out.
Re-install the crosssmember with Grade 8 bolts in place of the rivets and you are done.
As an aside, you can tell if a truck came from the factory with an automatic transmission by the presence of an inspection port.
On the passenger side floor, on the side of the hump, there will be an oblong plate (or a hole) with 1 Phillips screw holding it on. This plate was necessary to access the band adjustment screw or nut because it could not be accessed from below.
In '65 and '66, the only automatic transmission offered in the trucks was the COM, not the C-6, so the inspection plate is no longer needed for access if a C-6 is installed.
It is indeed impossible to remove an automatic transmission without removing that crossmember. In fact, if the truck came from the factory with an automatic transmission, the crossmember was bolted to the pivot points, not riveted.
A manual transmission equipped truck left the factory with the center crossmember riveted to the pivots.
This is easy to fix for installing and removing an automatic transmission.
Obtain a small grinder and grind off the heads of the rivets - there will be 4 of them, 2 to a side.
Drive the rivets up and out.
Remove the 2 bolts in the upper rail (for both automatic and manual transmissions) and slide the crossmember out.
Re-install the crosssmember with Grade 8 bolts in place of the rivets and you are done.
As an aside, you can tell if a truck came from the factory with an automatic transmission by the presence of an inspection port.
On the passenger side floor, on the side of the hump, there will be an oblong plate (or a hole) with 1 Phillips screw holding it on. This plate was necessary to access the band adjustment screw or nut because it could not be accessed from below.
In '65 and '66, the only automatic transmission offered in the trucks was the COM, not the C-6, so the inspection plate is no longer needed for access if a C-6 is installed.