C-6 Tunnel
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Fleet Mechanic
Joined: Jan 2014
Posts: 1,946
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C-6 Tunnel
I'm probably going to abandon my 3-speed (shame!) and go with a C6. I don't mind a "stick" in some vehicles, but I don't want one in my pickup. I have noticed the vendors that sell carpet kits specify a different pattern if the truck is equipped with a C6, describing a "high tunnel". Does that mean I have to modify, or obtain a replacement trans. tunnel if I abandon the 3 speed in favor of an auto? I have the original 352. I have searched the forums herein, but have not found this subject addressed...I'm sure it has been and it probably won't be the last time I propose an inane and redundant question as I begin my restoration. Thanks all!!
Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
NO, my former 3spd runs a C6 with no cab mods. There is another issue that does have to be dealt with with 2 options. The bell on the tranny will not pass through the opening are between the cross member and the floor.
1- The cross member is riveted in on the 3spd. the rivets will have to be cut punched out and replaced with bolts to allow install with engine in place. or
2- The engine will have to be pulled, C6 mounted and installed as one unit.
John
1- The cross member is riveted in on the 3spd. the rivets will have to be cut punched out and replaced with bolts to allow install with engine in place. or
2- The engine will have to be pulled, C6 mounted and installed as one unit.
John
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Fleet Mechanic
Joined: Jan 2014
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Speaking of specific C-6 for the FE engine, should there be a specific casting or part number on the Transmission, I should be looking for to verify that I will have a matching unit? I know there are a few C-6's around, I'd rather not take the seller's word and have to resell the darn thing. Thanks again....
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Fleet Owner
Joined: Jun 1999
Posts: 24,552
Likes: 74
From: Creedmoor, North Carolina
Speaking of specific C-6 for the FE engine, should there be a specific casting or part number on the Transmission, I should be looking for to verify that I will have a matching unit? I know there are a few C-6's around, I'd rather not take the seller's word and have to resell the darn thing. Thanks again....
John
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Fleet Mechanic
Joined: Jan 2014
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Again, John, thank you for your expertise and knowledge! I have done a few restorations, but always to completely original. This is my first journey into modification/substitution. Different for me as there is no "pattern" to copy. I appreciate having this source of information!!!
Fleet Owner
Joined: Jun 1999
Posts: 24,552
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From: Creedmoor, North Carolina
I try to respond to questions that I have actually done myself. Unlike Mr. Wilson I have never sold new parts by the book, so I do make a mistake now and then.
One more tidbit, on the tranny that you use pull the shift arm on the side of the tranny all the way up in park. The one for trucks runs along the pan seam like this - one for cars drops down like this / but not that dramatic. They can be swapped but need to be done before installing.
John
One more tidbit, on the tranny that you use pull the shift arm on the side of the tranny all the way up in park. The one for trucks runs along the pan seam like this - one for cars drops down like this / but not that dramatic. They can be swapped but need to be done before installing.
John
Fleet Mechanic
Joined: May 2012
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From: peru kansas
also another dead giveaway on a c6 for an FE they have 3 bolt holes for the starter where the small blocks and big blocks all use 2 bolts...... that cross member they are talking about you can cut it out with a torch if you had to (its what i did to clear my headers) but since i did this i noticed my truck isn't quite as stiff as it used to be but i have worked her butt off since i did it and no serious qualms that i can tell and i have known many people to do this but if you have the time its always better to do like john said and make it to where you can bolt it back in place
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
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From: Simi Valley, CA
they have 3 bolt holes for the starter where the small blocks and big blocks all use 2 bolts.1958/62 FE engines also use a 3 hole starter, but it's different from the 1963/76 version, as it uses the Bendix inertia starter drive.
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