LS1TECH - View Single Post - Whats a cast iron/steel SBC crank rated at HP wise?

Villain281H · 04-13-2008, 05:12 PM

I had a stock GM crank in a 355 SBC that lasted 7 years before splitting into halves

Plenty of racing (over 1000 passes), about 50,000 street miles. I wasn't upset. Aftermarket cast cranks are usually rated to 500-550 fwhp with forged uping that # by a good bit (800-1000 fwhp). All depends on what the engine will see for abuse and times it gets abused.

Derek

04-13-2008, 05:12 PM	#10
Villain281H DRAG RACING IS LIFE! Mod Trader Rating: 4 Join Date: Nov 2001 Location: Gainesville, Florida "GatorTown" Posts: 7,638	I had a stock GM crank in a 355 SBC that lasted 7 years before splitting into halves Plenty of racing (over 1000 passes), about 50,000 street miles. I wasn't upset. Aftermarket cast cranks are usually rated to 500-550 fwhp with forged uping that # by a good bit (800-1000 fwhp). All depends on what the engine will see for abuse and times it gets abused. Derek __________________ 1970 Nova SS Clone: 383 SBC on 93 swill, 3600+ lbs., 11.12 @ 119.77 mph N/A, quicker on the jug... 2000 Formula: MACS, ORY, Magnaflow, !EGR, !AIR, Formato tune, stock long block, trans and rear end, still slow 2004 GMC Sierra 1500 ECSB 5.3: Magnaflow CB, K&N CAI, Formato tune, what I haul st with** Check out pictures, info and vids: www.fquick.com/Villain281H "If ignorance is bliss, why aren't more people happy?"