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Re: ARP standard vs. OEM 6 bolt
Steve, you might want to check some posts on that other board that you are a moderator of from 5-6+ years ago about this subject. It has been know for quite a while that normal ARPs aren't all that good. The Supra guys figured out that their stockers were better than the ARPs ages ago.
Just about every DSM with normal ARPs starts pushing coolant in the 475-500awhp range on my dyno. It's like clockwork, doesn't matter how conservative the tune is. Evos heads are a bit meater than DSM heads and are less prone to flexing, so they aren't as prone to it.
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