i have a 460 in my 72' mach, which is at just under 550 horse. it whould have roughly 610 torque too. Stock dependin on the year newer ones (fuel injuected) id say 300 or more at least, and probobly 380 or 400 torque. a good friend of mine has his 460 stroked up to 625ci. which is crazy but i guess they can get over 700 ci!! 429s and 460's are completely interchangeable, the truth about a 460 is that it is a stroked 429 (same block) different crank.if anyone is thinkin of building a 460 im pretty good with them and know a great list of parts suppliers from blowers to cranks and cams.