That's not bad considering those Pistons usually net around 9.3:1 compression and that's a cam you can run a stock converter with and not much lift about .514 with a 1.6 rocker.
I wonder how necessary the 1.81 exhaust valve is in a factory cast iron head, my wondering comes from trickflow using a 1.78 ex valve. With a 2.190 intake valve
I'd think going bigger on the intake would be the ticket. ( Trickflow vs factory 906 ports not a fair comparison) but just a thought
