My 440 build and HP guess.

Your pistons will tell you the compression for their use with those chambers. IF they don't, you'll have to do some math.

YOu could also zero deck the engine to help out.

[email protected] is a bit small for a 440, but it depends on the LSA as well. I wouldn't be afraid to go [email protected]. If you aren't going roller, I have always really liked the MPP grind [email protected], .528/.557

I would definitely want to see over .500 lift regardless