oil pump drive shaft is loose

Grumpy

The Grumpy Grease Monkey mechanical engineer.
Staff member
I put in a new Melling m-55 oil pump with amoroso steel collar shaft #22070 in my 350 crate motor. With the distributor installed and fully seated, the shaft can move up and down 1/4 of an inch and this shaft doesn’t snap on to the pump as it does with the plastic sleeve.Is this normal? Thanks in advance
mor-22070_xl.jpg

chevy oil pump drive shafts are available in several lengths, because various brands of oil pumps vary considerably in the length required.
you can also install a BBC oil pump on a SBC engine, in some cases, and applications.
there should be about vertical .050- .060 play in the oil pump drive with the distributor clamped in the intake
morpumpdrive.jpg


milpumpdrive.jpg





http://garage.grumpysperformance.co...l-pumps-pressure-bye-pass-circuit-works.3536/



read the linked threads and sub linked info its well worth the effort to do so
 
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