Bell Housing Bolt Patterns
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Fleet Mechanic
Joined: Jul 2004
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Bell Housing Bolt Patterns
Someone help me! I can't remember what the story was with 351C/351M/400 bell housing bolt patterns. Some would only bolt to Cruise-O-Matics, some were the same as Windsors? Thanks.
Laughing Gas
Joined: Dec 2000
Posts: 781
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From: East Texas
The 351M/400 utilized in the trucks have the same bellhousing bolt pattern as the 429/460 (385 series). I believe the 351C had the smaller bolt pattern.
There were some earlier 400 engines that were bolted to the FMX transmission as well, if I'm not mistaken.
There were some earlier 400 engines that were bolted to the FMX transmission as well, if I'm not mistaken.
Cargo Master
Joined: Apr 2001
Posts: 2,364
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From: Eustis FL
My 1977 Cougar has 351M, but it's original transmission was an FMX!?
After three FMX's, I swapped out to a C6. So, did the factory put a 1973 block in my '77? (I am far from the car to be able to read date codes...)
After three FMX's, I swapped out to a C6. So, did the factory put a 1973 block in my '77? (I am far from the car to be able to read date codes...)
Junior User
Joined: Nov 2007
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My 1977 Cougar has 351M, but it's original transmission was an FMX!?
After three FMX's, I swapped out to a C6. So, did the factory put a 1973 block in my '77?
If not, you have a really rare bird... a small pattern 351M block, and a small housing C6.
I would guess you went from a large-housing FMX to a C6.
Cargo Master
Joined: Apr 2001
Posts: 2,364
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From: Eustis FL
Come to think of it, I believe the FMX had a removable bell housing...
That's probably how it was done.
I read a 1980's article that rated transmissions of all types. The C6 had a great efficiency loss, but had the highest increase of efficiency when built with a shift kit. (not to mention they are tough
The last C6 started acting up within the first week... Took it back to the shop and they found that the steel vacuum line was pinched off somewhere. They installed a rubber hose from manifold T to the modulator and that fixed it.
That's probably how it was done.
I read a 1980's article that rated transmissions of all types. The C6 had a great efficiency loss, but had the highest increase of efficiency when built with a shift kit. (not to mention they are tough
The last C6 started acting up within the first week... Took it back to the shop and they found that the steel vacuum line was pinched off somewhere. They installed a rubber hose from manifold T to the modulator and that fixed it.
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Fleet Mechanic
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Cargo Master
Joined: Apr 2001
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From: Eustis FL
wasn't Cruise O Matic the name given to all 3 speed Ford autos during the era? The C6 in my 71 Torino was called Cruise O Matic, according to the report I got from Ford Archives...
I have seen very few articles on building an FMX, but I have read a couple... I don't think they are as strong as the C6/C4's, so maybe that's why they are not so common.
I have seen very few articles on building an FMX, but I have read a couple... I don't think they are as strong as the C6/C4's, so maybe that's why they are not so common.
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Hotshot
Joined: May 2003
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From: south louisiana
The MX/FMX came with at least three different bell housings---small block, FE big block and the 385 series big block bells. I have two small block bells and an FE bell. There was a small block bell patterned 400 block. These were snatched up long ago by the Pantera crowd.
Freshman User
Joined: May 2008
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You'd think....
Part of it is these D**N gas prices. Makes it too expensive to ship one from out of state or go pick up the ones I have found. They are all out in the middle of BFE and my 'bump' would cost too much in gas to go get it. I found ONE that someone doesn't want too much $$$ for, but it needed too much $ in repairs to make worth buying.
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