I'm running the -140 302 service package cam. Using 1.6 rockers it comes out to .526"intake & .539"exhaust. Advertised duration (.015"camlift) is 304 intake, 312 exhaust. It works great with steep gears in the 332 small journal I have. GM says you should run at least 12:1 compression with it because of the overlap of the valve timing. So I'm using the TRW forged 12.15:1 L22llAF pistons. I really didn't build it for streetability. I just put together a lot of the old nostalgia type pieces I had and I'm real happy with it. Finished it off with the Edelbrock Smokey ram, just to make sure it wasn't real streetable I guess! Actually I love the design that Yunick came up with on that intake, larger plenum than most tunnel rams, straight long runner crossram, unlike the GM crossram with the bent leg runners. And it is designed to be used with a single carb. Pretty neat piece, but it likes mid to high rpm, so I built the motor with that consideration. I don't think you'd like this cam with the auto unless you're running a pretty loose converter. Otherwise it would work great for you 327.
Yes I really like these heads too. Very affordable. I stuck a set of SIS stainless race-flo swirl polished valves, pocket ported and gasket matched the ports, screw in studs and guide plates and I probably got less into them than would cost me for one bare aftermarket casting. They are a good piece.