i have heard they are good to upwards of 280+ hp but i would stop testing them at around 200-220 whp otherwise they might let go and take some other thing with them. of course these were all upgraded with arp con rod bolts.
A guy I know that is running 10psi on the street spiked close to 25psi on a homemade boost controller at the track on a stock LS bottom end. Thats with the .63 a/r that comes with the Drag3 kit. He melted pistons but his rods didn't give out. I'd shotpeen them at least if you were planning on a serious build tho.
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