Transmission Swap
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
You need a 361/391 bell housing, which you already know. You need to check the pilot bearing diameter (inside AND outside) required for the Clark, and to mate it to a 390's crank.
You need to neutral balance the 361/391's flywheel, or somehow find a neutral-balanced FE flywheel that can take the pressure plate used on the 391 (which, I don't think is too hard, to be honest, but I might be wrong).
As for converting to hydraulic clutch, I posted links to both a conversation about it here at FTE, and a supplier of the slave cylinders.
Good luck and definitely report back with what you come up with
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
One more thing and I'll stop commenting 
I see the Clark as a viable alternative, given the correct rear gear, as I went into earlier, because of the better range of ratios available.
I don't think you're going to find any other "off the shelf" tranny, that's both heavy-duty enough, AND was mated to an FT (making it easy to adapt to an FE) so it's easy to accomplish.
The only other ones out there were either never hooked to an FT/FE, no bellhousing exists for it, and/or a slew of other issues.
I don't think you're going to find any other "off the shelf" tranny, that's both heavy-duty enough, AND was mated to an FT (making it easy to adapt to an FE) so it's easy to accomplish.
The only other ones out there were either never hooked to an FT/FE, no bellhousing exists for it, and/or a slew of other issues.
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
One more thing and I'll stop commenting
I see the Clark as a viable alternative, given the correct rear gear, as I went into earlier, because of the better range of ratios available.
I don't think you're going to find any other "off the shelf" tranny, that's both heavy-duty enough, AND was mated to an FT (making it easy to adapt to an FE) so it's easy to accomplish.
The only other ones out there were either never hooked to an FT/FE, no bellhousing exists for it, and/or a slew of other issues.
I see the Clark as a viable alternative, given the correct rear gear, as I went into earlier, because of the better range of ratios available.
I don't think you're going to find any other "off the shelf" tranny, that's both heavy-duty enough, AND was mated to an FT (making it easy to adapt to an FE) so it's easy to accomplish.
The only other ones out there were either never hooked to an FT/FE, no bellhousing exists for it, and/or a slew of other issues.
Standin Down.
John
FTE Leadership Emeritus
Joined: Jul 2002
Posts: 42,561
Likes: 423
From: Long Island USA
I am only theorizing, so I can be wrong...
The bellhousing for the Clark may use a different fork than the regular Ford bell. Not to mention, the throwout bearing is probably going to be different. Maybe, maybe not.
Without looking at the parts in question, it's a crap-shoot.
For instance, how is the clutch linkage setup on the FT? Same as the FE where there's a pivot on the bell housing (if I remember correctly)? Same diameter ball? etc. etc.
One you see the parts in question, you'll know more
The bellhousing for the Clark may use a different fork than the regular Ford bell. Not to mention, the throwout bearing is probably going to be different. Maybe, maybe not.
Without looking at the parts in question, it's a crap-shoot.
For instance, how is the clutch linkage setup on the FT? Same as the FE where there's a pivot on the bell housing (if I remember correctly)? Same diameter ball? etc. etc.
One you see the parts in question, you'll know more
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