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hey guys just curious as to what a good safe limit would be as far as a shift point for this crank being 4340 material. I am also considering scat h beams as well.. or would howards billet rods be preferred. I was thinking of 7400.. will be using a460 block and heads.
 

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I had a Scat 4340, Scat 6.8 h beams, A460 block and heads on the dragster I sold back in May. 588 ci. Same setup on the 598 I'm building now. Motor will be the same except for 10 more ci and 18 bolt A460 heads vs 10 bolt A460's on the old one.

The crank can handle it, but in most cases the A460 heads don't need to be turned that high. About 7200 providing the cam is well matched. I shifted my 588 at 6900 for a while and then raised it up to 7100 for a very small gain. Going higher wasn't worth anything. Also, unless you have upgraded to Ti valves I wouldn't turn it more than 7200. The stainless valves that come with the A460's a big and HEAVY. They will find the weak points in your valvetrain if you turn it too high.
 
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