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FE- Ford Engine (there are different opinions on what this stands for)
W- Windsor
C- Cleveland
M- Modified (different opinions on this one too)
FE is the BIG block. It ranges in displacment from 332 to 428 ci. In trucks you will usually find 352, 360, and 390 ci motors.
This one is a bit more confusing. The M motors are tall deck (distance from crank centerline to top of cylinder bore) blocks of the Cleveland family. They use the Cleveland style cylinder heads. The 400 was produced first and the 351M is a derivative from that motor. The 351C actually has a shorter deck hight than the 351W motor by .3" ( 9.2 vs. 9.5). However, the Cleveland engines are considered to be mid-size blocks because of their displacments (on the larger side compared to the Windsor family; W=221-351 ci vs. C=351-400ci). The 351W is a tall deck 289/302 block. Their are other major differences between the 351 blocks that has filled books.
The terms refer to different engine "families". I'm not going to get into an explanation of what the acronyms are for but suffice it to say that the FE series are the big block V8s which were put in Ford trucks from the early 60s to 1976 when they were largely replaced by the M series. The FE motors most commonly found in trucks are the 352 and 360 but the series also includes the 390, 410, 427 and 428. The M series consists of the 351M and 400.
I like to think of the FE as an intermediate block when it comes to displacement, because at the time the FE came on the scene there were engine families both bigger and smaller than it (Y-block and the Lincoln 430/462, which also made it into the 58-60 T-bird). The FE soldiered on through the 60s, when the 430/462 was replaced with the 385 series, but was replaced in the intermediate role by the 351m/400.
When you describe Ford engines as small or big block, you are inviting comparisons to shivvy engines--a shivvy big block has a much larger potential displacement than an FE. The Ford big block is the 429/460 or the 430/462 of yore. The FE is intermediate, not really "small" but not quite "big" either.
IMO ofcourse,but i dont call any Ford engine big block/small block.Even if they are slang i still believe they are Chevy terms.
I have had chebby guys ask me"is a 390 a big block"?And i tell them the same.But some poeple like to think that like Adam and Eve big block and small block are a set in stone thing for all brands which is not true.
Chevy had two V8's that were popular.The "small block and the Mark5 "big block".The 348/409 were a seven year deal but was redesigned as the Mark5.
OK enough of GM.
I "like" to think FE stands for Ford Edsel and M for Modified Cleveland.
Wrong or right,they make sense.
I used to think modified sounded right, but then someone said that the Cleveland was Cast in the cleveland plant, the windsor in the windsor plant and the M in the michigan plant and that seemed to make more sense