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well, let me reinforce Kyle's point here.
I've been running in excess of 10psi regularly for what, 3 years now?
Same engine I don't baby this thing either, I outright hammer the crap out of it all the time.
It's all a matter of whether you know the limits, operate within your limits, and most importantly, tune correctly. With proper tune, and ample fuel supply, I'm pretty certain I can push one of these STOCK blocks past 20psi with only using either copper or MLS headgaskets and using ARP studs.
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