What is it?
11-18-2016, 07:46 AM
#1
Burning Brakes
Thread Starter
What is it?
Someone gave me an aluminum water pump GM part # 3975928
What is it? It's aluminum and NOS. Is it worth anything?
What is it? It's aluminum and NOS. Is it worth anything?
Last edited by R. Seghi; 11-18-2016 at 07:48 AM.
11-18-2016, 09:25 AM
#3
Race Director
Member Since: Jan 2002
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C2 of the Year Finalist - Modified 2020
I found 4 of them for BB application on e-bay with production dates in the late '80's from $300 to $35. 
Dennis
Dennis
11-18-2016, 12:14 PM
#6
Team Owner
Found this;
This is a big block (BB) Chevy Chevrolet aluminum water pump (GM part Number 3975928, GM Group Number 1.069) for 1967 67 1968 68 1969 69 and 1970 70.
This is a big block (BB) Chevy Chevrolet aluminum water pump (GM part Number 3975928, GM Group Number 1.069) for 1967 67 1968 68 1969 69 and 1970 70.
Last edited by Mr D.; 11-18-2016 at 12:14 PM.
11-18-2016, 01:02 PM
#7
Melting Slicks
the 3975928 aluminum big block water pump was a GM 'service only' part and wasn't used on any production cars at least through the early 70's.
Last edited by Critter1; 11-18-2016 at 01:03 PM.
11-18-2016, 01:58 PM
#8
Burning Brakes
I had a GM aluminum water pump on my small block many years ago. The guy I bought it from said it was a military application. And he should know; he dealt a lot in military surplus. And, he was a car guy, too.
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