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Old 07-25-2010, 09:13 PM
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"400M"
Just look at what you've started Cobalt327!
(Just teasin' )

Yep, the Ford 400 came out in 1971 passenger cars and was later installed in 1977-82 light trucks.

The last year for the 351 Cleveland was 1974, and it was commonly found in the Torino, Cougar, Thunderchicken platforms.

The 351M was introduced in 1975 -78 passenger cars, and later installed in 1977-82 light trucks.

Quote:
Wikipedia The M designation is commonly referred to “Modified”, and is derived from the use of both "Cleveland" (block, heads) and "Windsor" (crankshaft) components in the same engine, a modification for the parts' intended application, so to speak.
It was also tagged with the "M" in order to differentiate it between the "C" and the "W".

I know, I know ... it's just about as confusing as a Chevy 383!

Last edited by 66GMC; 07-25-2010 at 09:15 PM. Reason: Named and linked source of quote.
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