Transmission Choice
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Joined: Mar 2000
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Transmission Choice
I am rebuilding a 1970 F100 SWB. I am putting a 1981 351W in it. I have the original C4 transmission off a 240 6 cyl and I have a Cruise-O-Matic (FMX) off another 351W. The bell housings look the same. Any good advise which transmission I should rebuild and use? Thanks in advance.
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Joined: Jun 1999
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Transmission Choice
I am not aware of any difference between a C4 for a six or a V8. The FMX doesn't seem to have much of a following whereas the C4 is a smaller unit, lighter and can be modified if needed. I would vote for the C4 with a shift kit; it can handle the 351.
Lee
1965 F100 short box styleside
Lee
1965 F100 short box styleside
Senior User
Joined: Jun 1999
Posts: 222
Likes: 2
Transmission Choice
I just read a column in Mustang Monthly in which someone was looking for a modification kit for a FMX; the magazine said that they didn't know of anything available. Hopefully you have gone with the C4.
Lee
1965 F100 short box styleside
Lee
1965 F100 short box styleside
Senior User
Joined: Jun 1999
Posts: 140
Likes: 2
From: Bander, TX (Hill Country)
Transmission Choice
I am running a rebuilt(with a shift kit) '76 C4 behind a warmed up '70 351W.. no problems so far in the 5 years and various engines I have used it with...
Bill in Mobile
'64 F100 Shortbox
Bill in Mobile
'64 F100 Shortbox
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