![]() Rear main seal oil leaks and gasket leaksĪ noteworthy disclaimer: many of these problems are problems because of how old these engines are nowadays.The Windsor blocks were known to be stronger while the Cleveland heads had more flow and therefore more performance potential. Performance enthusiasts commonly swap the heads of a 351 Cleveland onto the block of a 351 Windsor, creating a 351 Clevor. From 1970 to 1974 Ford produced H, M, R, and Q versions of the 351C which were primarily performance oriented versions of the traditional 351C. To make things slightly more confusing, the 351 Cleveland had numerous different engine codes. Two new head designs were built, one similar to the 351W but with larger valves and ports, and one with large ports and canted exhaust and intake valves. However, Ford also decided to upgrade the Cleveland built 351’s with a new cylinder head design for improved performance. Therefore, they decided to begin producing the 351’s in the Cleveland plant as well. The 351 Cleveland was born when Ford realized that demand for the 351 Windsor was greater than their production capacity in the Windsor plant. Commonly referred to as the 351W and 351C, the 351C was part of Ford’s “335” engine family. Despite both being 5.8L V8’s, the 351 Windsor and 351 Cleveland are actually from different engine families. The Cleveland title was given due to its manufacturing location of Cleveland, Ohio. Carburetor replaced with fuel injection in 1988įrom 1969 until 1982, Ford produced a 5.8L, 351 cubic inch V8 called the 351 Cleveland.Switch from speed density to MAF in 1994.The rear main seal was changed to a one-piece design in 1984.Deck height was increased in 1971 for a lower compression ratio. ![]() Block casting was changed in 1975, the 1969-1974 versions are significantly stronger and therefore more desirable.While there are too many to list specifically, here are some of the more material changes throughout the years: Over its nearly 30 year history, the 351W went through a number of revisions and improvements. The Windsor family is a group of 90 degree OHV small-block V8 engines, produced from 1961 until 2002.Īt 351 cubic inches, or 5.8L, the 351 Windsor is the largest V8 in the Windsor engine family. The 351W is part of the Windsor V8 engine family, an informal name given to the engines produced out of the Windsor, Ontario manufacturing plant. It is one of Ford’s longest running and most successful engines to date. The 351 Windsor is a 5.8L small-block V8 engine produced by Ford from 1968 until 1997. ![]()
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