Lifter Valley Baffle Screen???

vristang said:

Is it even advantageous to use one?

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I really doubt it. The only Ford engines I know of that for sure came with them from the factory are 351 Clevelands. The 351M/400 may have also, but I'm not certain. I think getting an intake(or even just gaskets, if possible) without an EGR crossover would be of more benefit.

vristang said:

How are the 351M and 400 oiling systems different from the Windsor?

How is the Chevy motor different so that their small blocks need one?

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I dont know how the oiling is different. The 351C, 351M and 400 share alot of design elements with the 385 series(429/460). The Cleveland, however, was a factory extra high performance engine. Factory ~300cfm heads and 2.75" mains = high rpm. Modern NASCAR engines are still loosely based on the Cleveland.

As for the Chevies, its cheaper to make a million engine options based on the same block. Ford did something similar with the FE; it started in '57 or '58 with the 332 FE, then went to 352, 390, 427, 428, and many other options in truck platforms. They stopped using the FE in cars in '70 and in trucks in the late '70s.

For my EGR spacer, I put it on a milling machine at work and bored it out. Took about 15 minutes. I also have a spare one punched out to 70mm.