Water Pump Pulley Question
Thread Starter
Heel & Toe
Joined: Feb 2002
Posts: 19
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From: Houston Texas
Water Pump Pulley Question
What size water pump is on a 1969 corvette 350/350 hp, Long or short? I 'm having a problem with the Har. Bal. pulley and the water pump pulley touching and clattering when running. Also I need to know if the pulleys are correct. The bottom is three groove and the water pump is two. How do you size them? Thank you for your help
Drifting
Joined: Jun 2000
Posts: 1,955
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Re: Water Pump Pulley Question (Blane Johnson)
Should be the short water pump.
I called March Pulleys this week to ask some questions. Their engineer told me that the Corvette water pumps are actually a little shorter than other "short" water pumps. If you look at their kits the ones for Corvettes are a different part number. If you can, remove the pulleys and look for part numbers stamped on them. Then you can call the Chevrolet dealer or post the part numbers on the Forum and see if they are the right ones. Sounds like you have the wrong pulley diameter.
Mine run pretty close but don't touch. Another thought...is your water pump shaft bent?
Jeff
I called March Pulleys this week to ask some questions. Their engineer told me that the Corvette water pumps are actually a little shorter than other "short" water pumps. If you look at their kits the ones for Corvettes are a different part number. If you can, remove the pulleys and look for part numbers stamped on them. Then you can call the Chevrolet dealer or post the part numbers on the Forum and see if they are the right ones. Sounds like you have the wrong pulley diameter.
Mine run pretty close but don't touch. Another thought...is your water pump shaft bent?
Jeff
