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Can I use a ZZ4 SBC long neck water pump ( part#12529305 or 88894341), on a 1978 350 SBC engine assembly, in place of a std 1969 type long neck water pump ?

Thanks for all replies!

John Lighthart
Charleston, SC
 

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yes, but your PS pump and upper alternator brackets won't bolt up.
you could drill out the threaded hole and use a washer as a spacer to hang the PS pump, and put a spacer behind the upper alternator bracket or get one from a 76-87 car or truck to make it work.
 
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