Quote:
Originally Posted by skokie
I got my new balancer today. Its a 8 inch with the timing mark line up with the keyway slot. Had a issue with the other one having the timing mark 10 degrees off. Well as usual when I go to do something on the 68 I usually find something wrong or out of wack. This time was no exception. As I was getting ready to remove the crank pulleys I noticed that they were off a bit. So I got my tape out and sure enough the one thats on there now is about 1/8 -1/4 of a inch narrower and that is how much the pulleys are off by  Imagine that. Heres the pics..
Pulleys
New Balancer

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looks like you need to replace crank pulley with one for a long shaft waterpump, or shim the pulley on balancer