I have a 1966 Plymouth Belvedere II and want to replace my waterpump.
The waterpumps at my local auto parts stores do not fit. The pump that came off the car has a plastic impeller that is concave in the center. The new pumps have metal impellers and they hit the block and bind up.

Any help would be appreciated, Skipjaz

Email Skipjaz@aol.com

Wow, that's really interesting that the pumps you're buying are hitting the block. Sounds like your parts store has got a run of improperly-assembled ones. The plastic (or cast iron) impellers were used through about '67, stamped metal after that, stamped metal supplied as service replacements for all slant-6s, and the two types are fully interchangeable, unless you're dealing with improperly-made pumps.

Suggest you try a different pump supplier, make certain there's no crusty buildup on the block that's preventing you installing the pump, and make sure you're using the correct "gasket sandwich" (block-gasket-plate-gasket-pump) when installing the pump.

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