Do the short wires that go to the spark plugs on an ls1 just pop off or are they threded or something? I am pulling really hard and they dont come off?

Also, All i am trying to do is pull one plug to see what it looks like, do I need to do anything else before hand?

 

the stock wires are realy tight . pull the end off the coil first and then pull realy hard on the plug end.

 

Hey man just do as conan said. But DO NOT pull on just the wires or you will either be repairing the stockers or buying new ones so be careful. Chris