2000 K3500 7.4L
Looking for the plenum torque spec and sequence.

 

i think intake plenum is 24 ft-lb if i remember correctly that's what i did on mine. about two fingers tight on a mini-wratchet. don't over-tighten ... any kind of rubber seal over-tightened may not seal correctly. it's plastic - over-tightening plastic can warp the plastic. they are easily accessible - no big penalty for not over-tightening if you need to re-tighten later.

for head bolts i dont' remember - but those you must NEVER follow "dealer" procedure. for those torq them, wait a day, torq again, wait a day, continue this until when you come back they are still the same torq. never do head bolts in one day "over under torq procedure one time only" on your own car. it's not right.

 

Intake Plenum Bolts ... 25 N·m ... 18 lb ft

 

Lower intake:
Stage 1 - 22 ft-lbs
Stage 2 - 30 ft-lbs

Upper Intake:
Stage 1 - 6 ft-lbs
Stage 2 - 13 ft-lbs