Aluminum Cylinder Heads
Lightly coat each head-bolt thread with motor oil before torquing to spec. The correct order and specs for tightening the bolts is included in the Edelbrock instructions. They also need to be tightened in three steps, and we found the specs for those steps in the 1996 Comet, Falcon, Fairlane, and Mustang shop manual. Following the sequence during each step, torque first to 50 lb-ft, then 60, then 70. The final step in the tightening procedure is to torque the long (upper) head bolts to 80 lb-ft. If you’re installing the heads on a 351W, the final torque specs for its 1/2-inch bolts are 100 and 110 lb-ft. Be aware that in many cases aluminum heads are torqued to different specs (often lower) than cast-iron heads. Read the instructions carefully! View Related Article
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