In automotive terms, the 351C, 351W and the 351M were V8 engines produced by Ford. They had a displacement of 351 cubic inches.
Google search - 351M vacuum diagram
if it is the stock engine then it is not a 351m because ford had stopped making the engine before 79
Yes. basically the 351m is a Cleveland with a modified deck height.
The M stand for her middle name
Original answer: it really doesn't stand for anything, its just an "m" people think that it stands for modified or some of the others and that's fine, but in reality its just an "m" nothing more nothing less Additional answer: There is a casting code of MCC common to most 351M/400 engines. The code stands for "Michigan Casting Center." Many who know this believe the M stands for Michigan. I agree with the previous poster that Ford Motor Company does not officially call the M code engines by any other name; however, the M likely originates from the casting foundry name, as it does with the 351C and 351W engines. Note that many refer to the 351M as a 351 "modified" presumably because the M engines share components with the 351C and 351W. Of course, the designation "modified" could apply to many engines produced by any of a number of automakers, as many new engines are derived through some modification of an existing engine. So it is extremely unlikely that engineers at the Ford engine group would call a new 351C/W hybrid "modified."
in 3M what does the M stand for
The 351M, is "modified." Windsor motor, with Cleveleand heads. So, I guessd a small block.
No, the 351m has a big block bolt pattern, and the 351w has a small block pattern, this caused some what of a problem for me seeing as I had 5 spd tranny off a 351w that I wanted to put on my 351m.
meters
meters.
It was for the founders, Mars & Murrie.