Is a 351 modified considered a big block?
Other Differences. The 351C used the “Small Block” bellhousing bolt pattern. The 351M/400 used the “Big Block” bellhousing bolt pattern.
Is a 351 ma big block or small block?
The 351 Windsor is a small block. If memory serves it has a taller deck height than the 302 but is otherwise very similar. So a couple things: There is no set of rules for what constitutes a small block or big block.
Is a Ford 351 a small block?
The 351 Windsor (351w for short) is the largest of the Ford Small Block engine family. Ford Motor Company built them between 1969 and 1996. It’s a 90 degree V8 with an overhead valve train.
What size engine is a 351 modified?
Ford took the 400 engine’s tall-deck block and installed the 351 Windsor crankshaft resulting in a shorter 3.5 in (89 mm) stroke crankshaft to produce a 351 cubic inch (5.8 L) engine. The 351 Windsor and 400 Cleveland shared the same main journal size and cylinder bore spacing, so the crankshafts were interchangeable.
What is the difference between 351W and 351M?
There are several external differences that can help to distinguish between the 351W engine and the 351C and M engines: The 351W has three bolts attaching the valve covers on the exhaust manifold side; the 351C,M has four. The 351W has the timing cover bolted to the block.
What is a Ford 351 modified?
351 Modified It’s based on the 400 Modified engine (see note on nomenclature in the opening paragraph), which was essentially a 351C with a longer stroke. Unlike the 351C however, the 400 blocks had the bellhousing bolt pattern of 385-series big blocks. It also had a higher deck height to accommodate the longer stroke.
Is a Ford 351 a big block or small block?
The Windsor motor is considered a small block. The Cleveland 351 is between a small block and a big block. Even though the Cleveland 351 came from the small block family, few parts will interchange. The heads on the 351 4 barrel engine were very similar to the Boss 302 heads.In 1971, Ford offered only a two barrel version of the 302 motor.
Are 351C and 351M bolt patterns interchangeable?
The bellhousing bolt pattern on the 351M uses the same pattern as the 385-series big block engines as well. (That means, even though they’re related, transmissions, intake manifolds, and other parts may not be interchangeable between a 351C and 351M.)
Is a Chevy 289 a big block or small block?
Clevelands are neither big block nor small block. Small block and big block are Chevy/GM terms. OK – sure – there is a convincing urgument that 289/302/351W are small block while 352/390/427/428/429/460 are big blocks.
When did the Ford 351 Modified come out?
To put it into perspective, Ford offered the 351 Cleveland from 1970-74 (in the U.S.) and the 351 Modified from 1975-82. The 351 Windsor was available from 1969-97, making it by far the most common engine of the trio.