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I usually use arp headstuds and a mls. However i have run 45 lbs/min on stock headbolts/composite gaskit. Most of the bad rap on 4g63 head sealing issues is on the 7-bolt engines with the tty headbolts. The 6-bolt headbolts are pretty much the same as 6g72 headbolts and those have made 1,000+ hp on stock headbolts and mls gaskets.
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