241@ 50 isnt “ big” for a 4 inch arm, at all. Even at 10 to 1
My cam is 260@50 in a stock stroke 360, that might not even be 10 to 1 .seems to work OK. Convertor is everything. Been right at 119 before, at 3300, very mild eddie heads.
Based on the mph numbers i am seeing with that blueprint stroker, actually in cars, my guess is the heads are very limiting. A real 445 horse, or even close, should run in the 11’s at 110-112 falling off a log