The torque specs for the manifolds is 17-19 lbs/ft. Torque in the following pattern.... 1 through 8, #1 is the top one closest to the exit (or crossover) flange. #2 is the lower one on the same port. #3 is the top one on the next port over. #4 is lower one, same port., ect, ect,.
45 ft.lbs.
22
24 ft lbs lower intake 115 inch lbs exhaust
18 to 22 lbs
29ft lbs
17 foot pounds.
18 ft lbs
18 ft lb
According to the Chilton manual, the torque settings are 15 to 20 foot pounds or 21 to 27 Newton Meters.
25 NM25 NM
18 foot pounds
The only reference my manual has to exhaust manifold bolts says to tighten them and bend the locking tabs over.