This is a reply to Richard (Techinspector). You wanted to know what cylinder pressures I had with the current cam.

OK, I have now done a compression test on my 454. Pressures are 175-180 psi, this is with a cold engine, plugs out, throttle wired open. I couldn't do it at running temp, as I would have no fingers left by now! I guess pressures might increase a little when properly warmed up. I have Total Seal gapless second rings.

Static CR we reckoned to about 9.5 - 9.8:1

Cam Specs again are:
Lunati hydraulic roller 50247. 218/226@.050", 112 lobe centres, .534/.544" lift.
In Opens: 1 BTDC In Closes: 37 ABDC
Ex Opens:49 BBDC Ex Closes: -3 ATDC

How does all this sound to you, Richard? Would the Comp Cams 230/236@.050", 112 lc, mid .500 lift work with this setup, or would cranking pressure be too low?

Thanks again, Chris