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Originally Posted by IHateHacks
That is a matter of opinion. ARP recommends 86 ft/lbs for their 12mm STUDS. ARP does NOT list a torque value for their 12mm BOLTS. And yes, torque values for studs and bolts are different. Factory specs are 58 ft/lbs which is too low, but I've heard (I can't confirm, maybe someone here has a link) that toyota reissued a new torque value for head bolts which is 72 ft/lbs. I personally torqued my ARP bolts to 70 ft/lbs. I'd say anywhere between 70 and 85 ft/lbs would be fine.
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The Haynes Manual calls for 85 ft lbs