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Here's what that "handle" end does. It aligns the crank to this dowel pin in the block to set the position of the crank at 11 o'clock so it is easier to set up the timing chains, etc.
This tool is specifically designed to align the crankshaft at Top Dead Center (TDC) on Ford 1993–newer 4.2L and 4.6L 2-valve engines, 1993–newer 4.6L 4-valve engines, and 1993–newer 5.4L and 6.8L V8 engines.
You kept the baffle in the VC, right? If you wound up removing that baffle, I'd be leery of of using a 90 right there.... the oil might get up in your breather.
I was able to keep the baffle as-is. That may have something to do with the 5/16" gaskets.
The PVC fitting worked. It started as a 1"x1" NPT street 90. I softened the threaded areas with a heat gun, then "re-threaded" them using the breather and stock VC filler as "tap" and "die." I had to remove the pipe between the blower and the throttle body and grind down the fitting a bit for room to screw it in. Adding oil will be a bit of a PITA, since I'll need a funnel and tubing, but it'll do for now.
Well, today was eventful. I finally got the wiper cowls replaced. Lookimg how good they looked, I went and put in a new shaded windshield, $180 installed. The oldv glass was loose at the center top area. All is good now.