Head Bolt Torque for 4.0 Head Swap + other ?
Okay....almost all the forums say to torque the 4.0 head to the 4.2 block using the 110 ft-lb torque specs of the 4.0 head. But since you are really torqing into the 4.2 block, why would you not use the 85 ft-lbs as whats specified for the 4.2 head bolts?
Also, i've been trying to figure out pushrod length. it looks like using the 4.0 pushrods (9.640") is about 0.040" too long. Anyone else confirm this? If I had 9.600" I'd be between 0.020-0.040" of preload.
One more....I have a comp cam 252H grind. It is supposed to be mild, but not recommended for FI, which I'm converting too. Anyone know if this will really give me a problem?