Originally Posted by MAD FORD
thanx man :)
I will start building a 460 twin turbo next week on the original crankshaft :)
Be sure you are starting with a production crank that is in very good shape. Production parts have looser manufaturing tolerances than race application parts. Bring the oem part to race spec's, such as careful selection of crank (never been used in a motor that was blown up, etc). Recondition the crank with such things as magnafluxing, stress relieving, case hardening, oil gallery mods and/or cryogenic treatment. Any combination of these types of things (or others) that are helpful in strengthening the crank for your intended application are a good idea. I am not saying that the crank will not live otherwise, I am only suggesting ways to prep the crank for performance use. No different from building any performance engine.
I have seen basically stock, unmodified cranks handle the HP you are suggesting...just offering wise ideas.