351m/400 351c
Postmaster
Joined: Sep 2013
Posts: 2,595
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From: Pasadena, Ca
https://www.ford-trucks.com/forums/s...d.php?t=102632
This is a sticky at the top of this forum. Read it and then maybe ask questions from there.
This is a sticky at the top of this forum. Read it and then maybe ask questions from there.
Elder User
Joined: Apr 2012
Posts: 990
Likes: 4
From: Tamaroa, IL
The 351M and 400 are basically the same engine. The main differences have to deal with the stroke. The 351M has a 3.5" stroke while the 400 has a 4", therefore, the cranks are different. The 400 also has shorter pistons so that they do not crash into the head. Another small difference is the clutch. The 400 has a 12" while the 351M usually has an 11". The 351C is similar, but it has roughly a 1" shorter deck height. There is plenty of info on google....
Cargo Master
Joined: Apr 2001
Posts: 2,697
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From: Vancouver
It is easier and cheaper to change an "M" motor into a 429-460 than into a Cleveland. Read a bit about it, as suggested above. If your truck were a year older you'd have a much better motor in it direct from Ford, but that is only wishing...
Eric
Eric
Elder User
Joined: Apr 2012
Posts: 990
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From: Tamaroa, IL
I'm building this beast at the current moment. 400 bored .040 over to 410ci. Comp cams extreme energy cam (right under .500 lift) Keith Black flat top piston (C/R~9.2), Wieland dual plane aluminum intake, edelbrock 1806 650cfm carb, MSD blaster 2 coil, flowtech long tubes, etc.
Hopefully it'll be running this weekend.
Hopefully it'll be running this weekend.
Senior User
Joined: Jul 2014
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From: Herington KS
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Elder User
Joined: Apr 2012
Posts: 990
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From: Tamaroa, IL
Not sure what you mean by "change a M motor into a 429-460
The 429 and 460s are 385 series engines while the "M" motor is a 335 series. They are totally different engines.
Elder User
Joined: Apr 2012
Posts: 990
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From: Tamaroa, IL
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Laughing Gas
Joined: Mar 2014
Posts: 917
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i know about the 351m/400,will heads off a 351c bolt on a 351m 400? Im basically searching for parts or a complete 400 to rebuild while im driving my truck that has a 351m. I can find lots of 351c parts in my area plus 460 but nothing in a 400. THANKS guy's.
Lead Driver
Joined: Nov 2006
Posts: 5,217
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From: Pa.
by 351C head, which do you mean; U.S. production 351C 2V, U.S. 4V open chamber, U.S. 4V closed chamber, or the Australian production 302C closed chamber head?
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