I am buying a '73 Mercury Cougar. The car runs and is all there, although it needs a lot of TLC. There is a huge looking engine, 351 c.i.d. stuffed under the hood, with a skinny little two barrel carb sitting on top. I was wondering if there was an easy way to identify the Cleveland vs Windsor engines.
I'll do the google bit too, but I was wondering if you folks had any tips or tricks. Thanx.
ClassicMustang
Favorite Answer
The Cleveland radiator hose goes to the block and not the manifold, also true about the fuel pump bolts being vertical and 8 bolt valve covers..
we have some good links about id'ng these in our links
Anonymous
The cleveland and M series engines had a flat spot on the valve covers where the oil fill hole is. Windsor engines didn't. If it isn't a windsor, it is probably a 351 modified. (taller block height than a cleveland, but very similar otherwise)
Anonymous
look on the engine block its self and you might wanna check the data plate to see if it came with the 351 windsor or 351 cleveland
omnisource
Cleveland or Windsor designations should be stamped on the engine ID plate. Perhaps its encoded into your VIN?
144289
351 C. has 8 valve cover bolts, fuel pump bolts are vertical, while 351 W. are horizontal