What's ya' need to torque, Capt'n... If it's the head 55 lb's will do just fine but be sure to torque it in the proper sequence and take it to 40 pounds first... The sequence is somewhat flewible but you need to alternate bolts and work the entire head rather than starting at the front and work to the back...

If it's not the head then use good judgement... Like the manifolds certainly won't like 55 pounds... Maybe 20 or so pounds and then if you have a leak youi can always tighten 'um a little more but 55 will break 'um and then you'll be drilling and easyoutin' (which it ain't)...

Motorhead/bluesman Bobert