comp XE256

273 said

If you look at 340 stock cam at 0.050" specs the comp cam is slightly more aggressive. 340 cam is pretty mild cam.

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I was comparing the how many degrees ABDC when the intake valve closes at.

IIRC the 340 cam closes the intake at about 60 ABDC and the XE256 closes at 54 degrees ABDC. This will increase the DCR some which would work well in the cast crank engine.

I'd probably chose a XE268 (or bigger) which closes at 60 ABDC for a forged crank engine. I've run it in the past with great results.