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Message: [QUOTE="thatdude, post: 1441896, member: 27697"] You can make 500 with 160/100s lol. Do beehive valve springs, studs and push rods. 910s are not enough to keep those valves from floating at 3700 RPM and 50lbs of boost... Trust me, need new pistons because of this. You're on the right path. Your pistons will eventually fail but that's more of an international design issue. Just like the Duramax, the 7.3 pistons don't have a radius on the fuel bowl lip and this causes a stress riser and cracks will form and eventually intersect and blow a hole. Stock trucks will form cracks! Just pulled my heads off after 2 years of running in 475ish RWHP range and I got 6 pistons with cracks coming from the fuel bowls and out of those 6, 2 have impact marks from the valves floating. Still made compression!!! [/QUOTE]

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