Quote: power difference, with both motors being built identically, I'd expect the 413 to make ~6.5% less power, since it's ~6.5% bigger. so for say, a 450HP/480tq 440 build, I'd expect the 413 to make ~422hp/480 tq.....
Well those numbers go right inline with my blind stab in the dark guess, (your 28hp vs my 20hp difference guess). At any rate it's all guesswork until someone does a build off of both and dynos them both, same day, same dyno, as many constants as you can throw at the test, etc.
