Scat sbc premium pro series I beam HP limit

[steve cowan]

Yeah they Are tuff as nails. I use heaps of them

I’m wondering what the HP and RPM limits are of the cast 9000 cranks

I broke a scat cast Holden at 550hp trashed whole engine

I have a cast 9000 scat on the shelf at home here yet to use it, I have read and been told good for 450-500 hp
550hp 308 very stout, not sure if Tony has used the cast scat crank.
I like the 4340 STD weight crank, on its 3 Rd freshen up, crack tested and linished a couple of times now and measures up nice,
I ran a BBC with a 300 shot 10 years ago in my hotrod 3200 pounds 8:90 @ 150 mph thing killed the scat steel cranks every 2 years at freshen up (CRACKED) don't know why they were so hard on them, tune up was good.

[406shark]

I ran a Scat 9000 series crankshaft with the 6" I beam 7/16's cap screw rods... not the ARP 2000 series in my 383 for just over 6 seasons. The engine made right at 570hp and I shifted at 7000 and trapped at 7500 EVERY pass. The thing worked without ever tearing it apart. It made its final pass at 9.494 at 135.44 mph on the limiter and spun a bearing. I can't complain about the service life at all. Yes, I know I should have pulled it apart and refreshed it sometime before it hurt itself. lol




Jeff