torque specs

[91lxstang]

Well I'm getting ready to slap my new heads on tomorrow. And I need the torque specs, for the rocker stud bolts? And the head bolts? The heads are TFS TW if that helps? Also what is the pattern to install the head bolts?

Thanks!

 

[Michael Yount]

Head bolts - with clean threads lubed with oil - 75 ft-lbs; lubed with moly lube-65 ft-lbs; rocker bolts 20 ft-lbs; lower intake - 16-18 ft-lbs.; upper intake 10 ft-lbs. Get a manual for the proper patterns - especially the lower intake.

 

[91lxstang]

rocker bolts 20 ft-lbs

Is that for the studs to the heads? Or the other ones that lock the rocker to the stud?

Thanks!

 

[Michael Yount]

Sorry - I misunderstood; thought you meant rocker bolts. You'll have to post separately and ask others what torque (if any) gets put on the stud - it's probably just til they bottom. The nut doesn't get a torque put on it. It simply gets tightened a set number of turns - usually between 1/2 and 3/4. Be sure you loosen the allen lock nut down inside - tighten the nut the number of turns, then set the allen lock. That always gets done when the lifter is on the base circle of the cam - not the the lifter's on the lobe. You'll have to rotate the engine by hand for each set so that the valves are closed when you install them (base circle).