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Old 08-26-2008, 07:28 PM
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351 windsor swaped with 351 modifed

I'm in the process of swaping my 351 modified with a 351 windsor
I need to know if the bolt patterns and hoses all match up or if there is any alterations that must be done first?

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Old 08-26-2008, 08:30 PM
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There are many changes needed, but the most important is another trans/bellhousing. The 351M uses a 400/429/460 pattern instead of the SBF one.
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Old 08-29-2008, 05:58 AM
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What vehicle your doing this in would help some with the answers. I would "assume" it is a truck.

The bellhousing/trans is the big thing. You will also need a new "Y" pipe for the exhaust unless your going with headers. There are several oil pan changes over the years depending on what the engine came out of and what it is going in.

Don't just toss those 351 "M" heads they are basically a 351 "C" canted valve 2 barrel head.

HTH.
Tony
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Old 08-29-2008, 08:26 AM
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If it is in a truck you might have to change the motor mount towers and you will definitely need SB Ford motor mounts. You will also need sb Ford hoses and a sb bell housing. You should use a truck oil pan but a car one will work. The only problem with using a car pan is when you drain the oil it drains all over the front cross member, making a big mess. The plug on a truck pan is in the back and a car pan has it on the side. The exhaust will be in a different position so that to will need to be changed.
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Old 09-02-2008, 02:37 PM
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I'm actually thinking about doing the same thing. I have a '73 Montego that I'm toying with. Does anyone know if the FMX tranny will bolt up to the Modified? I have heard rumors about the FMX having a C6 bell housing and C4 parts or something????...
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Old 09-02-2008, 09:05 PM
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Quote:
Originally Posted by krivman65
I'm actually thinking about doing the same thing. I have a '73 Montego that I'm toying with. Does anyone know if the FMX tranny will bolt up to the Modified? I have heard rumors about the FMX having a C6 bell housing and C4 parts or something????...
The FMX is it's own tranny. It has a removable bellhousing much like a manual trans. There are no parts, I am aware of, that are used between it and the C6 or C4. I believe there is a bellhousing for a 385/modified pattern, and you could adapt it then. There are C6s with FE abd SB patterns as well as the 385/modified. the C4 is primarily SB patterened although some were used behind 200 6 cylinders. I think it would be easiest to acquire a 385/modified pattern C6 and install it. I would probably go with a 460 since mounts are available to set it up and factory parts could complete it. The 351M is really a lame duck in that regards. 429s were available in that car and the mounts should be easy to locate. Plus the exhaust and other components would be the same...much easier than piecing together one with an M, where most things would need to be adapted or modified and the rewards would probably be less than the work involved.
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Old 09-02-2008, 10:22 PM
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the FMX shares most of it's parts with the Borg Warner Automatics used in AMC's prior to 1972.. Ford basicly made there own case for the BW trans, and therfor share no common parts with the C4 or C6
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