FE 352 transnission issue
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From: Rockwall
FE 352 transnission issue
I have a 1965 F100. It had a three speed originally. I'm making it a automatic. Bought a FE c6 and had it rebuilt. Replaced the flywheel with flexplate. Could not get the two to mate up. Found the nipple on the front of the torque converter is hitting the crank shaft. I did remove the pilot bearing but it hits the crank. Torque converter fits the flex plate when its not on the motor. I was assured that I have the right flexplate and torque converter. I was then told it wont work because it was a manual trans to start with. Any suggestion would be great.
Tuned
Joined: Jul 2004
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Check to make sure that your torque converter is completely mated to your transmission. There are faces in the transmission pump that must match the faces on the torque converter and also splines on the shaft that need to align with splines in the torque. I usually spin and push the torque towards the transmissions and feel for two clicks.
Ford Parts Specialist
Joined: Nov 2006
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From: Simi Valley, CA
C5AZ-6375-D .. Flexplate.
1965/67 F100/350 352 with MX Cruise-O-Matic / 1968/76 F100/350 360/390 C6.
1965/67 Ford/Merc 352/390 Passenger Cars with FX & MX Cruise-O-Matic.
1967/71 Ford/Merc Passenger Cars 390/C6.
The flexplate used on 1966/70 cars with 410/428 C6 is different (C6AZ-6375-B).
1965/67 F100/350 352 with MX Cruise-O-Matic / 1968/76 F100/350 360/390 C6.
1965/67 Ford/Merc 352/390 Passenger Cars with FX & MX Cruise-O-Matic.
1967/71 Ford/Merc Passenger Cars 390/C6.
The flexplate used on 1966/70 cars with 410/428 C6 is different (C6AZ-6375-B).
Cargo Master
Joined: Apr 2001
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From: Vancouver
I have had this happen. First, do as Carras says, then ensure the parts are aligned properly. There is not too much margin for error. Resist the temptation to squeeze it all together with the bellhousing bolts. Doing so can damage the pump.
Eric
Eric
Ford Parts Specialist
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From: Simi Valley, CA
The 4 lock nuts that attach the flexplate to the converter should only be used ONCE.
Most FoMoCo dealers have these, as the same ones have been used for over 50 years with many different A/T's.
378941-S441 (replaced 378941-S7) .. 3/8" -24 Lock Nut.
Most FoMoCo dealers have these, as the same ones have been used for over 50 years with many different A/T's.
378941-S441 (replaced 378941-S7) .. 3/8" -24 Lock Nut.
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From: Rockwall
I measured the nipple on the front of the torque converter and its is 1 3/8 the crank is 1 1/4 when I explained this to the transmission shop I bought the T C from they are insisting its right. But it still doesn't fit. When they look it up under 1965 F100 with a 352 they have nothing for it. So they did it as a 1966. This could be my problem. I've tried to ask others but they have nothing on it. Apparently its not easy to find someone who knows about these motors. And getting parts, supper pain.
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Cargo Master
Joined: Apr 2001
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From: Vancouver
The FORD transmission forum has been a bit quiet but it's worth a try:
Ford Transmission Forum
Stuart will have the answer if there is one.
Eric
Ford Transmission Forum
Stuart will have the answer if there is one.
Eric
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From: Tri Cities, TN
I vaguely remember the PO of my truck saying he had a hard time finding a converter when he put a C6 behind the original 352. All of the C6 converters that I have are either 1.850 or 1.375 diameter pilots. My suggestion would be to call the tech line at TCI, B&M or Summit Racing. Tell them what you want to do and they will most likely have a converter that will fit.
Fleet Owner
Joined: Jun 1999
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From: Creedmoor, North Carolina
Darn72 Welcome to 
and the Slicks Forum. 
1st I want to assure you that the 3spd to C6 conversion will/does work. Number Dummy will have better knowledge than me for correct part numbers. I have been coming here most everyday for 20 years and never heard of any different lengths of crankshafts between years, so you should be good there.
Two things come to my mind, the TC is not down as far as it needs to go, or all of the pilot bushing is not out of the crank. Can you tell us how much more is needed to lock it up? 1/2", 1/4", 1", or something different
John
and the Slicks Forum. 1st I want to assure you that the 3spd to C6 conversion will/does work. Number Dummy will have better knowledge than me for correct part numbers. I have been coming here most everyday for 20 years and never heard of any different lengths of crankshafts between years, so you should be good there.
Two things come to my mind, the TC is not down as far as it needs to go, or all of the pilot bushing is not out of the crank. Can you tell us how much more is needed to lock it up? 1/2", 1/4", 1", or something different
John
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From: Tri Cities, TN
Just a little side note as a point of reference, on a C4, C6, or AOD with the converter fully seated in the front pump it is 1 1/8 inch +/- 1/16 from the face of the bellhousing to the mounting pad where the converter bolts to the flexplate.
Ford Parts Specialist
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From: Simi Valley, CA
I measured the nipple on the front of the torque converter and its is 1 3/8 the crank is 1 1/4 when I explained this to the transmission shop I bought the T C from they are insisting its right. But it still doesn't fit.
When they look it up under 1965 F100 with a 352 they have nothing for it. So they did it as a 1966. This could be my problem.
When they look it up under 1965 F100 with a 352 they have nothing for it. So they did it as a 1966. This could be my problem.
C6 was not available in F100/350's until 1968 when the 360/390 engines were introduced.
1965/67 F100/350 352 were only available with MX Cruise-O-Matic.
C5AZ-6375-D flexplate is the same: 1965/67 F100/350 352 MX C-O-M & 1968/76 F100/350 360/390 C6. See post #3 for Passenger Car applications.
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From: Rockwall
Thanks for all the info. I really want this to work. The torque converter is seating all the way on the trany. I'm going to try to find the right TC. I love this motor. I know it's not high horse power but it runs like a top and its original.
I noticed looking at pictures of the C6 transmissions some of th shift levers are on the top and some are on the bottom. Is there a difference or doesn't matter. Mine is on the bottom.
I noticed looking at pictures of the C6 transmissions some of th shift levers are on the top and some are on the bottom. Is there a difference or doesn't matter. Mine is on the bottom.
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From: Rockwall
Jowilker
When I have the trans and TC together it will not mate up around a half inch apart. When I tried to put the TC on the flexplate with out the trans, same thing the nipple hits the crank. I can tilt the TC and only get two of the studs through the flexplate. I did remove the pilot bearing so that's not an issue. I was shocked when the tech told me it wouldn't work and they had sold me the right converter but it wasn't compatible with an automatic.
When I have the trans and TC together it will not mate up around a half inch apart. When I tried to put the TC on the flexplate with out the trans, same thing the nipple hits the crank. I can tilt the TC and only get two of the studs through the flexplate. I did remove the pilot bearing so that's not an issue. I was shocked when the tech told me it wouldn't work and they had sold me the right converter but it wasn't compatible with an automatic.
Fleet Owner
Joined: Jun 1999
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From: Creedmoor, North Carolina
You are past my tech ability. I remember we got the tranny and the guy that was helping didn't get all of the pilot bearing out and broke the tranny bell while trying to force a mate.
As noted before I have never read about a manual vr auto crank. Or that a single C6 would not bolt to a 352, 360, 390, 428. I have never read make sure it has a X or a Y to bolt to a 352 engine.
The shift arm on a truck C6 is different from a car arm. The truck arm when in park runs along the pan seam - while the car hangs down / but not that much.
Number Dummy Are you aware of different FE crank lengths? Are you aware af a C6 bolting to one FE and not another?
John
As noted before I have never read about a manual vr auto crank. Or that a single C6 would not bolt to a 352, 360, 390, 428. I have never read make sure it has a X or a Y to bolt to a 352 engine.
The shift arm on a truck C6 is different from a car arm. The truck arm when in park runs along the pan seam - while the car hangs down / but not that much.
Number Dummy Are you aware of different FE crank lengths? Are you aware af a C6 bolting to one FE and not another?
John