Head Torque spec's Help

[drmiles]

Ok not a Hummer question, But I am helping my son change head gaskets on 98 chev z71. The torque specs say 22 ft lbs then add'l 45 deg for short bolts, 65 deg for med bolts, and 75 deg for long bolts. (degrees from memory will check book again for exact)

Question
1. my Torque is in inch pounds. Is it a simple conversion 12 in lbs = 1 ft lb?

2. Is there a degree wrench or do you just estimate the number of degeree's to tighten??

Thanks
Jerry Miles