What does tighten an additional 55 degrees mean?

Question

97 Chevy silverado cylinder head tightening. It says to tighten all to 22 lbs, then to tighten the short ones an additional 55 degrees, the med one 65 degrees and the long ones 75 degrees. How much of a turn is this?

Answer 1

You need a degree wheel. It hooks up to your torque wrench and is really simple to use. Basically it means once you have reached the proper torque turn the bolt an additional 55 degrees to seat the bolt. about an 1/8th of a turn.
I did not know GM used this method but it is common in BMW's and Mercedes to use a degree wheel with torque.

Answer 2

Ive never heard of degrees in torqing bolts. Only foot pounds. But if any help, 90 degrees equals a 1/4 turn, 55 is 1/8 turn and so on.
But i would go on foot lbs. There is a lot of torqe in an engine. I just done the heads on my 327 chevy motor and i used 65 foot lbs on all. Just remember to do the bolts in each proper sequence specified in the assembly manual.
good luck.......

Answer 3

I hate that crap, once you reach torque you need to keep going another 55 degrees,, say it clicks torque at 3 oclcok from you,, then you need to go to the 5 oclock position for 55 degrees ( approx ) or 6 oclock ( right at you ) for 90 degrees,

Answer 4

There is 360 degrees in a full turn. This is around a 1/4 turn but I would get the tool that attaches to your torque wrench that will tell you exactly how far to go.

Answer 5

First time I have seen so many correct answers on any question. If you want to do it the right way pick yourself up a degree wheel they are not costly and use it as several have described.

Answer 6

55/360=0.152 or 1/6, 65/360=0.18 or between 1/6 & 1/5, 75/360=0.20 or 1/5