Thread: 351 Cleveland or 351 Windsor??

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i was just wondering what the difference is between a 351 cleveland and a 351 windsor????

Now a 351 Windsor is really a slightly enlarged 289/302, as it's name implies it comes from Fords "Windsor" engine family (a.k.a. the 90-degree V engine family). The thin-wall cast SMALL BLOCK accepts regular sized spark plugs, uses a timing chain in the block, routes water through the intake manifold, features thin main-bearing caps, a very good oiling system, and uses the same heads for 2V & 4V versions. The heads are are small, utilizing in-line valves with relatively small ports. The valves are 1.78" intake and 1.54" exhaust, i.e. the same size as a 289/302. The valve covers are straight (front to rear), attached by 5 bolts, and when removed you can see 351 cast in the lifter valley. The small side-by side (in-line) valves are the dead give-away.
The 351 Cleveland, on the other hand, belongs to Ford's 335 engine family. This thin-wall cast BIG SMALL BLOCK uses the smaller 14mm spark plugs, has a separate front cover (bolted to the block) housing the timing chain and routing water - so that water does not go through the intake manifold, features beefy main caps (wide enough to drill for 4-bolt mains), a poor oiling system, and uses different heads for 2V & 4V versions. The heads make all the difference and these fire breathing babies make this motor the legend it is. On the 4V, the valves are HUGE, measuring 2.19" intake and 1.7n" exhaust (don't remember exactly). Valves this large are only possible via a canted valve arrangement, forming what Ford refers to as a "poly-angle" combustion chamber. The valve covers are not straight - the front is flat and parallel to the ground, but a curve twists the rear parallel to the head. They are attached by 8-bolts and when removed, there is a 4 cast into the corner of the 4V and a 2 cast into the corner of the 2V (at least in 1970). The canted valves are the dead giveaway.

viking said it all. However the aftermarket has embraced the 351 Windsor. I like the windsor family of small blocks because parts are easy to get and 450 to 550 fwhp is the norm with stroked and non stroked motors. I'm not putting the Clevland down I've seen a lot of fast ones but I've never owned one but I've always heard of the oiling problem. The windsor use to have breathing issues because of the small heads but the aftermarket AFR, Trickfow, Canfeild, World, Brodix, and many other have make the Windsor into an unbelievable power per dollar value.

later

Dennis

i have a cleveland good motor

Just slap them cleavland heads on that winsor block ,now that would be( BOSS).LOL