Which pan do you have now?  What oil pressure issues are you having?

I'm using the B&B pan from Rex...very resonably priced and it works.

Is your pickup welded to the oil pump?  Is it welded all the way around the pickup or just tacked in a couple spots?

Bolt on to what?  Chevy's don't use bolt on pickups.  They're a press fit into the bottom of the pump...a shitty press fit at that, and some of the pickups have that little novelty screw hole to make you feel better.  All the little screw hole does is prevent the pickup from falling off of the pump. 

The issue is that the press fit aftermarket pickups don't seem to seal for shit in the pump.  If there is even the smallest air leak, the pump will loose prime and oil pressure will drop when you start winding the thing up.  Weld all the way around the pickup, not for structure but to seal it and eliminate the possibility of air being drawn through where the pickup meets the pump.   Then try it again. 

A windage tray is never a bad idea...but I would start with welding the pickup all the way around to seal it.

I run a castrol 10W-40 syntec in my motor...thin stuff.  I don't have any problems. 40W probably wouldn't be too bad, but I don't understand why people run the straight 50 or 60W oil....seems a bit on the thick side. 

Thanks everyone, good info

If you can run 10w30 and still have good oil pressure do it! It gets back to the pan quicker and get up to the top on start up quicker. It is also less stress on the oil pump drive shaft for when you start spinning alot of RPM's.

Keep the Dooley pan, just get the tray in it. The aftermarket BBC puckups bolt to the pump housing. The thing is oiling itself like a lawnmower engine, dip N splash.

FYI, The Dooley pan is a factory 6 quart blank with a box fabbed to it, good stuff IMHO, I have three of them...How certain are you of the pan pick up to pan bottom? I have seen where the clearance was 1/4"-3/8" until the motor is allowed to rest on the pan and con-caves the bottom of the deal...Major no no..Sucks it right to the bottom like a sucker fish.

X2 on the windage tray, hell if you really want to badass it up, crank scraper. 

GT

Good Info, but I wouldn't run a crank scraper with a flat tappet cam. Roller, ok, Race engine, go for it, but you'll deprive the cam from some needed oil splash at the rpms we run at otherwise......imo. 

Ray