Quote:

New Combo(pump gas baby )
574CI World Aluminum Block
Good size custom comp 3/4 roller 112 wide and in at 108 from 112
11.89 to 1 compression

Dynamic compression ratio is 8.84:1
Dynamic cranking pressure is 180.84 PSI.
(calculated via wallace @ 0 altitude)



Especially important when putting together a pump gas combo is the compression ratio and cam specs. I like your CR choice. What is the duration of that cam?
However, even a cam with "too much" duration for the CR will work OK with that much CID.

It should be close to your target even with that 0.680" lift cam (.75/1.65*1.5). 574 CID does wonders.