1957 270 HP water pump

[Scott G.]

I need to get a correct water pump for a 1957 270 HP. From what I have seen it should be casting 3736493 without support ribs, with a flat back plate. What is confussing me is, I have seen this casting number listed on suppliers sites as being applicable to 1955-56 & 1961-68. Is this an error on the sellers web site or is there a difference is the machining of the casting?

[David L.]

Re: 1957 270 HP water pump

Scott,

This is what I have in my notes about Corvette water pumps:
55 3704911 wo/boss
56 3704911 w/boss
57-60 3736493 wo ribs on drivers side
61-62,E63 3782609

Noland Adam's 53-62 restoration book states the following on page 132: "The 1957 Corvette water pump was part number 3736492 or 3741034, casting number 3736492 or 3736493." I have never seen a pump with a 3736492 casting number.

I have about a dozen water pumps in my collection but both of my 3736493 pumps have ribs, "GM1 TX" and "GM4 T X" (Tonowanda).

Dave

[David S.]

Re: 1957 270 HP water pump

Scott I have attached a few pictures of an original 57 water pump. I just removed this from a car I recently purchased. Original car built late July 1957 tucked away in a garage for the past 34 years. Pump still had the original lower radiator hose and corbin clamps. Scott 57 pumps will not be dated.

[Jerry C.]

Re: 1957 270 HP water pump

Contact Ron Burke in AZ, He does them correctly. chevycool@msn.com or 480 720 8000 & 480 860 6463

[Steven B.]

Re: 1957 270 HP water pump

Scott I have attached a few pictures of an original 57 water pump. I just removed this from a car I recently purchased. Original car built late July 1957 tucked away in a garage for the past 34 years. Pump still had the original lower radiator hose and corbin clamps. Scott 57 pumps will not be dated.

Congratulations on the new acquisition! Any details on the new '57? Thanks! Steve

[Scott G.]

Re: 1957 270 HP water pump

Thank you everyone, I now have a pump on order.