timing chain
I replaced the stock chain with a ls2 in my 5.3L at 220,xxx when I rebuilt the motor. Chains aren't like timing belts that to to be changed every 100,000.
If your planing on a cam swap or have to replace the oil pump ect I would throw a new ls2 on while your in there.
If your planing on a cam swap or have to replace the oil pump ect I would throw a new ls2 on while your in there.
What year is it? If its a 98 or possibly an early 99 it will have a first design timing chain, but that being said I wouldn't tear the motor apart just to change it unless doing a cam swap or if you have a problem with the chain jumping time...
