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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: May 2017 Posts: 50 'Bolter | | 'Bolter Joined: May 2017 Posts: 50 | I've been working on my rebuilt 57 235 and have run into a snag. I have a short shaft water pump and pulley from Classic Parts and stock harmonic balancer. Either the balancer is pressed on too far or the pump some how isn't right, because the water pump pulley groove is about 1/4" closer toward the radiator than the balancer. Any thoughts? Is it possible for a balancer to be pressed on too far, or could something else be off? I received the engine in pieces so I don't know much about how it was before it was taken apart. The water pump is new. | | | | | Joined: Feb 2004 Posts: 29,851 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,851 | The "short shaft" water pump is just one that's had its hub pressed back to supposedly align with the single groove in the older balancer. Take the back plate off the pump and push the hub back carefully until the grooves line up. Then cut a little more off the pump shaft if necessary. A much better idea would be to get the pump relocation plate Pre 68 Dave sells and install a 216 style water pump. Then the vertical position of the fan will be right as well.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!
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