headgasker torque ?????

[Schmoky]

Had to replace the headgasket on my 1998 chev 1/2 ton 350 vortex. Found torque specs on the internet of 65ft lbs. Thought it was the correct one as the bolt pattern was the same. Tightened them to that then had access to a book and it says to tighten the bolts to 22 lbs then turn them additonal 55 or 65 or 75 degress (different degrees for bolt length). What the hell type of torque is that. How do I accurately measure degrees? The original figure of 65 ft lbs I think comes from pre 1997 heads. The wierd numbers are for this motor but I can't figure out how to get them torqued properly. What happens if I just leave them at 65 and run it? Am I taking a real big chance? I took one of the lower outside short bolts out and torqued it to 22 lbs then by eye tried to turn it another 55 degress. Made it about 40 degrees and stopped, it is REALLY tight. To go any farther I will have to lean hard on the torque wrench. Scared to go any farther concerned I will break a bolt or something. Any Idea what the torque would be after turning them an additional 55-75 degrees? HELP, what can I do? Smokey