I agree with Keith 100%
We have a lot of street race type engines running at and over 600-700 horsepower with Scat cast cranks and have had a breakage rate of damn near to zero. I might have seen one or two but could usually trace that to another root cause - like no
oil.
We try to steer people to a forged crank at the 700 HP or road race level because they are a lot harder on parts. Until recently the only options were a factory 391 with work - or an RPM part that required some "lovin'" before it could be used - both ended up around a grand. Recently Scat brought out their own forging that looks a lot nicer than the RPM parts for a hundy extra - well worth it from what I can tell.
Billet stuff was and is the best from a quality and strength perspective. As Keith noted - very spendy and it takes a certain type of customer to both appreciate and afford that kind of item.
So far I have built LOTS of FE engines for a very long time and have yet to personally handle one with a broken snout - probably cursing myself with that line right there...
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Survival Motorsports
"I can do that....."
Engine Masters Challenge Entries
91 octane - single 4bbl - mufflers
2008 - 429 cid FE HR - 675HP
2007 - 429 cid FE MR - 659HP
2006 - 434 cid FE MR - 678HP
2005 - 505 cid FE MR - 752HP