351m-400
Apr 18, 2007 | 12:41 PM
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Freshman User
Joined: Apr 2007
Posts: 39
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From: huntington
351m-400
whats the difrance between a351m &a 400 are 351s just bored out or is the stroke diffrent ?and how can u tell the diffance by looking ?
Apr 18, 2007 | 12:54 PM
Joined: Jan 2008
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Welcome to FTE.
FTE is a huge site and in that has specific forums for specific topics.
The 351M/400 fit into the 335 engine series,...... which has a forum on it's own to discuss the differences of these engines.
This 73-79 truck forum is for discussing the difference or uniqueness of the 73-79 TRUCK.
Here is link to the info you are asking about.
http://www.fordcobraengines.com/Modified%20History.htm
Here is the link to the 335 engine forum where your thread would have best been placed.
https://www.ford-trucks.com/forums/forum54/
Apr 18, 2007 | 01:02 PM
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Freshman User
Joined: Apr 2007
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From: huntington
Apr 18, 2007 | 07:29 PM
Joined: Jul 2002
Posts: 9,622
Likes: 109
From: Northshore, MN
yup, welcome to fte. to answer in short: pistons and crankshaft are all that's different. harmonic balancer may be, too.