Re: Harmonic Balancer ???
A 350 h/bal is thicker, 1-1 1/16" on the rim than a 327, 3/4 inch. The width is determined by the crankshaft and its rotating mass. A 350 has more mass inside the crankcase, hence, the thicker h/bal.
Also, year application is different. 68 & older have the timing mark offset from the keyway than a 69 or newer, they are closer in-line. Checking pictures, they have been posted by JohnZ in this section, will confirm this.
The hub the pulleys bolt upon, are the same height among both, so replacement pulleys, I don't think, will be needed.
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