Oil Pump Gear Clearance?

[NE57]

What would be the clearance between gears and cover? Everything I read says make sure there's not too much clearance but nowhere do I find what is a good clearance, in real numbers.
This is a stock 392 pump.


yeah I know alot of peep say just replace the pump with a 340, but then I also read some complaints about the shaft size not quite fitting in some cases.

Thanks

[DblAdigger]

In the 354 pumps I prefer .001/.002 clearance between the gears and cover plate. I'd think a 392 pump should be about the same. Be careful, check EACH tooth on both gears as they may differ and, be VERRY careful, if you sand/grind the housing, to keep it square. I use an expanding mandrel thru the shaft hole and chuck it in my Bridgeport. You'd be amazed how out of square they can be.

[NE57]

Thanks Chuck, I'll watch out for that.