Camshafts and Compression

PRH said
Here’s the results from the Wallace site, using the 42abdc closing point.
Notice the instructions at the top of the page.

Changing the closing point to 65abdc(282deg advertised) lowers the DCR number over 1 point and the cranking pressure by 30psi.

View attachment 1716360666

Yep, got those exact same results myself.

I did the ‘Vizard’ calc’s as well and got,
240* @ 0.050 intake
106* LCA
That calc doesn’t account for compression though? I did do it a while ago.
The Comp XE 20-225-4 seems quite close ‘visually’.

240/246* at 0.050’
0.541 / 0.544’’ - 1.6 rockers.
106 LCA
110 LSA
70* overlap
68 ABDC IVC