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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Jan 2010 Posts: 19 New Guy | | New Guy Joined: Jan 2010 Posts: 19 | I have a 1950 3100 with a 54' 235 engine.Does the harmonic balancer suppose to have a bolt in the center of it?I do see something that either looks like a broken bolt or pin?In front of it I do not see any threads? | | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | No bolt on the early 6 in the balancer. Or at least not from the factory. Some guys will drill and tap the crank to take one, though. Otherwise, it's just a press fit.
Bill Burmeister
| | | | | Joined: Jan 2010 Posts: 19 New Guy | | New Guy Joined: Jan 2010 Posts: 19 | Thanks Bill!My belt is not aligned it looks like the harmonic balancer has pulled away a little bit.Should I take it off and make it more snug on the crank?I tried to take a rubber hammer to it to make it slide on more but it didnot budge. | | | | | Joined: Jan 2010 Posts: 19 New Guy | | New Guy Joined: Jan 2010 Posts: 19 | Also the noise I get sounds like some kind of grinding!It only happens at idle and not during acceleration I checked the water pump bearings and the generator bearings and they seem fine.Would the harmonic balancer cause a grinding sound at idle if it is pulled away from the crank a little? | | | | | Joined: Nov 2009 Posts: 72 'Bolter | | 'Bolter Joined: Nov 2009 Posts: 72 | Rubber hammer is not going to cut it, not enough force to slide Harmonic Balancer on Crank. I just put mine back on this afternoon using an 8 inch block of 2x4 and a sledge hammer and it slid right on. Just make sure you place that 2x4 on the Harmonic, don't want to risk tweaking it. Good luck | | |
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