So I'm exchanging my 302 for a 351W. I want to use as many parts from the 302 on the 351 as I can to save money. What parts can normally be cannabalized?

 

Almost everything. 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. However, there are differences. The 351W has a taller deck height to increase the stroke. While all 289, 302 and 351 Windsor's share a 4" bore, the 351W engine has many changes that set it apart from other Windsor engines. The intake, heads, pushrods, block height, and firing order are just a few of the more notable differences between the 351W and other 4" bore Windsor engines.