360 carb jetting help

got a la roller 360, edelbrock heads, , slapped a 780 v/s holley on that I had froma 440.. any ideas what I should have in it for a baseline jet ? something to start out at? is a 780 vacuum, secondary too much carb for this? eng is a 91 360 roller block, with a custom roller cam grind , don't know specs , I didn't intailly build it. airgap intake, rpm heads, headers, 3000 stall , 4;10 gears,