Reply to "Dart 427 oiling system advice"

George PAdmin.

Tony I believe the two tappet passage restrictors are available as a kit, pre-drilled. This takes the guess-work out of the ordeal.

The oil metering Boss 351 style solid flat tappets work just fine in the Windsor blocks, and they make a fine way to restrict oil to the valve train when the motor is equipped with that sort of tappet. The "edge orifice" style oil metering solid flat tappets designed for the small block Ford (289/302) also work in the Windsor.

Push rods with 0.040" restrictors in one tip (or 5/16" push rods made from 0.120" wall tubing) are the best way to restrict oil to the valve train with hydraulic tappets, but those methods don't work with solid tappets because oil escapes to waste in the lash clearances between the push rods and the tappets.

I'd also install 0.060" restrictors in the passages supplying oil to all 5 cam bearings; for the exact same reason we do this in the 351C.

1/17/145:41 PM

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