What could cause this????

[ubtripn]

I installed a new engine and, yes I admit it was dumb, used my old harmonic balancer and crank pulley. Well after about fifty miles of driving I finally noticed the harmonic balancer wobbling. I replaced it, the crank was not scored, not extra sleeve required, re-assembled and the harmonic balancer is dead on no wobble at all but the crankshaft pulley has a slight wobble. Should I replace that too? (Yes I torqued it correctly.) I really need your collective genius because I am sooooo close to what I want. A slightly beat up truck that is mechanically new. What do you think?

By the way - this truck has become a crusade for me, my goal is to have a truck, a back up vehicle and something not reliant on microchips. I am almost there but I have two sons and I am always working on their cars. Who would buy new today with so many good deals out there if you know what to look for? Anyway, thanks for the help. I should have made my user name bloodyknuckles.

[Redline novdog]

If it is indeed a slight wobble,use it. The only problem would be at higher rpms.All said and done, yes it would be better to replace it.I don't know what the truck is going to be used for. If you happen to take it off again, see if there is a GM part # on it. Then post in the want adds, someone here might have one laying around.

[ubtripn]

will do and thank you!

[hamjet]

If it's a new engine, the crank snout should be threaded for a balancer bolt. Do use one and the balancer won't walk off. (it shouldn't any way)...

[midniteblues]

I would use it as long as it's not cracked or has a extreme wobble.
Keep an eye on your belt/s if they start wearing prematurely then replace it
Also be sure the balencer and pulley are seated properly

[ubtripn]

got it, thanks all!