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water pump
- Thread starter memaw777
- Start date
you have two pumps; a circulating pump and a raw water pump. the circulating pump has a stainless impeller, which is not like its automotive cousin. The raw water pump is not present in a car. If you need more volume, you likely have a blockage somewhere or need new risers due to corrosion. What problem are you trying to solve?
An automotive water pump will fit you 350. But it'll have a base metal impeller that you won't get a season out of. Once it goes away all you'll have is an overheat with troubleshooting problem. That and a belt tensioner.
When I last needed one, engine in signature, it turned out the Sierra at West Marine was the least expensive. The Sierra I bought was supposed to work with both clockwise and counterclockwise rotation (Vee and Serpentine Belts) and also with metal or composite (plastic) timing covers. I do not know if that compatibility goes back to your earlier year. In the midst of another search, I saw that pump referred to as "Short."
For Heaven's Sake, don't let it leak into the belts and pulleys!!!
When I last needed one, engine in signature, it turned out the Sierra at West Marine was the least expensive. The Sierra I bought was supposed to work with both clockwise and counterclockwise rotation (Vee and Serpentine Belts) and also with metal or composite (plastic) timing covers. I do not know if that compatibility goes back to your earlier year. In the midst of another search, I saw that pump referred to as "Short."
For Heaven's Sake, don't let it leak into the belts and pulleys!!!
As an aside, if you can change a flat tire you can change the circulating pump on a small block Chevy. Four bolts through a couple little gaskets that I've sometimes applied Permatex and re-used. But the impeller's got a metal cover and screws that may or may not come out after years in place. So an impeller inspection isn't really practical even though the pump comes off easily.
Yeah, the circulating pump just 'circulates' water thru the block. It can wear out the bearing in the front. Look for dripping water from the weep hole as an early indicator. If the pulley wobbles, you're getting dangerously late in your maintenance inspections.
Marine circulating pumps have straight vanes so they work in either direction.
Marine circulating pumps have straight vanes so they work in either direction.