engine is already together so it will be unchanged, but my forged 357 compression came out to be 10.48:1 i do realize i am giving up a little , to say 11:1, but it won't be a pooch hopefully. 236/245 111 lsa cam

 

You'll be fine, it will be more tolerant of gas. With the extra cubes the engine will brathe better, remember before these newer heads people were making alot of power on 9 to 9.5:1 compression and 10:1 was pushing it with pump gas. (really pushing it)

 

might be a little soft on the bottom. i would have got my DCR up where it needed to be.