I may have messed up here.....

I’m new on here but would value some advice from you guys.

I am in the process of gathering together parts for my 440 but I think I may have goofed in my parts choices in so far as the compression may be through the roof, and I hope you can put me right.

I have so far, a Crane 689521 cam, grind number HR-222/339, Trickflow 240 heads (78cc chambers), a set of SRP 231521 pistons that are -6cc with 1.865 compression height, bore 4.350 & stroke 4.150. Crank and rods are all Molnar items (440-4150MC6F & DH6760VTB8A respectively).

The block has not been machined yet so I dont know what effect decking etc will have on things.

How well do you think the above will work together? Someone advised that I need to ‘bleed off some compression’ with a hairier cam, but I don’t really know what that even means! I was going to use 1:5 rockers, but perhaps 1:6 would accomplish this bleed effect?

If relevant, I am going to run the 600hp Fitech on a Performer manifold (No room for anything taller).

All advice gratefully received!
I've not ran your numbers yet but are you trying to stay on pump gas? Another option would be to tune and run E85 which has a higher alcohol content and allows you to run slightly higher compression.

Also, if the block hasn't been decked yet, you don't have to go to a zero deck, just have the shop make it square/flat. Run a thicker head gasket . Those will help you loose compression a couple tenths of a point.