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Ayuh,..... Take it off, 'n look for a number or name on it,...... I believe the ole stringer drives had the pump in the drive,....This must be a very rare pump. Any suggestions on replacement? Very little room in front of crankshaft for a pump there. This has a belt driven pump located right in front of the fuel pump on the Chevy small block.
Here are some pictures that is the only thing I can see on pump. I am told it’s an original OMC and no parts are available for it. So I made the gaskets, cleaned it up, new, bearing and seal and put it back together. Something must be wrong with it.