Re: replacing amc v8 oil pump gears
Yes, the gears stick out, just place the cover on the gears, without the gasket, and measure the clearance beween the cover and the housing. Sutract the gasket thickness and you have your end clearance. Tighten up the clearance by removing metal from the timing cover. Add clearance by removing metal from the gears or use a thicker gasket. There are no shims involved here. The best sealer I have found for the gasket is to soak the gasket paper with locktite. Don't overtighten the bolts as the cover is easily warped. If you have one of the junk prestolite distributors left over from an update, grind off the drive gear teeth and remove the reluctor and weights on top to make a great preoiler.
Hope this helps, good luck!