I picked up some info from the FE forum. Blair Patrick has a 332 FE entry that dyno tested at 510 horse and 440 ft lb. The score is calculated by taking ave torque and horsepower from 2500-6500 divided by cubic inches. His score of 2.3 is competitive. Barry Rabotnic has a 427 FE that put out 606 and 532 for a score of just over 2.0. Looks like small cube motor with lots of head flow has the advantage. Ted, did you have any numbers in mind on what your Y-Block would have put out?