I don't think I have the appropriate info for you but I can give you a reference point. My 11:1 572 Hemi with a solid roller with 260+ duration on a 110 LSA gives me about 9 inHG at idle. Seems to run OK on pump gas.

AG.

1970 Challenger w/572 Hemi street car and my pride and joy. 1986 T-Type with 272 Stage 2 Buick V6 engine - True 8 second street car. Just updated the engine and put down 928 HP @ 35# boost to the ground on chasis dyno. 1976 Cee Bee Avenger Jet Boat - 460 Ford powered.