Some time ago I got a cam recommendation from Mike Jones, and this is what he recommends for my particular combo. 440-1 heads, 528 cubes, alky, 15/1 compression.
Intake lobe-318 @.020 , 284 @ .050 , 205 @ .200 Lobe lift .510, 1.7 rockers - .867 gross, .020 lash.

Exhaust lobe 340 @ .020, 296 @ .050, 217 @ .200 , 1.7 rockers, .816 gross, .020 lash.
Those are some big lift and .200 numbers, the rest is very similar to what I have now, only less lift and a lot less .200 duration.
Since I had to order new lifters, I bought the EZroll Red Zones which will improve durability a lot, and allow me to consider this big cam.
To see if I can make this all fit I am checking into B1 intake valves which give me another .050 installed height to make a max height of 2.100. That then will let me use PAC 1248 springs set where I want them, not crammed in at 2.050 and ending up with a lot of seat pressure. The pushrod clearance may be tight, so that and rocker geometry will have to be gone over. This whole deal isn't going to be cheap, but going fast never is,,,,,,,,,,,, but is sure is fun!
UPDATE: the .200 duration numbers are 205 and 217, not what I had posted earlier.
I ordered the cam, and Mike said to run either the PAC 1248, or go to a PSI spring which is identical to a PAC 1228. I am going with the 1228. He said install the 1228 spring at 2.000 for about 305 on the seat and 800 at max lift, coil bind is 1.100 so I am good to go with the valves and pushrods I have now if I buy +.100 retainers and +.050 locks to get some room for the final height. So once I get the heads back I can see if I need to increase clearance for pushrods to block to make room for the 1.7 rockers. I am hoping this is all worth some decent hp, ( maybe 25?) or is that overly optimistic?