I was turning my 383 crank with a torque wrench set to 60 ft. lbs to verify TDC. I have six plugs out, with two others loose. I was using a piston stop and found it from one side and was going around to the other side when the bolt suddenly got looser. Now the bolt will neither tighten nor loosen, it just spins. I can’t turn it with my hand and I can’t pull the bolt straight out. A ratchet will spin it easily. Did I just royally screw something up? How do I get the bolt out? Thanks.
Bry68
Its probably stripped and this is exactly why I tell people to never use the bolt to turn the engine over. There are tools for that reason.
You should be able to get it out with a pair of vise grips like ss327 said. Then you can either helicoil it or tap it out to big block size. It can be tight doing it in the car but it can be done.
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You should be able to get it out with a pair of vise grips like ss327 said. Then you can either helicoil it or tap it out to big block size. It can be tight doing it in the car but it can be done.
I found a stock GM bolt and it measures 2.300 under the head so the ARP one should be fine. The one you have now almost looks like the Pioneer ones.-
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