Speaking from experiance...do not use a stroked 2Y cranks for racing, it WILL break...it just a matter of time. If your not going to buy an aftermnarket steel crank then stroke a 3Y crank, they have much smaller holes in the rod journal area and thereby much stronger when off-set ground. A stock stroke 460 crank should be good for 700-800 HP if you use the best of everything...clevite bearings, balanced assembly, restricted oil flow to the upper end, 4-bolt block(prefered) or at least
ARP main cap studs. I saw evedence of "cap-walk" even on my SCJ 4-bolt bottom end with 3Y stroked crank (514 ci.). I spun it to 7,600 RPM many a time. Deen