That's an awful lot of lobe separation, 225 slanty's are like the "big blocks" of the slanty world,they kinda respond the same...tighter is more gusto.....I'm not sure what the tightest is, but I think they have run 104-105 a bunch on runners. Did You run this over at .org in the builds matrix? It's like the Car Craft where they kept tightening the LSA on a big block and it kept making more & more output.......a relatively narrow RPM band is in Your future no matter what, even with a good head...................