[Jack Ferris]

Originally Posted by lust4speed

My SG 4.500 crank is going on 3 years of racing with no problems. Mild 700 HP build shifting at 6,800 RPM. Had it checked and mag'd by the machine shop when first purchased and it was good to go.

Thank you. My goal for this build is 860-880 HP. There are many opposing views on this particular brand of crankshaft, even on the "other brand" sites but most, if not all speak of the final machining process being the deal breaker and speak little about strength. I have to assume that no matter which company finishes them if they are overseas forgings they are very similar in overall strength. I'm sure some have been broken and I have spoken to a few in the bowtie camp that have broken an overseas forging, but that's where the story ends. No hows or why they failed. Mr. Kinsler's information is priceless as we all know the level of power he makes.