Water Pump?
Thread Starter
Instructor
Joined: Jun 2019
Posts: 232
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Water Pump?
I've been told that Corvettes have specific water pumps. My '81 appears to be a short pump, as it is 5 5/8". My question is: is it a standard short pump, or is it configured differently. If I don't get the "Corvette" water pump, will I have pulley alignment or some kind of clearance issues?
Race Director
Joined: May 2006
Posts: 18,597
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since we dont know what manufacturer or part number you are considering it is hard to say whether that particular company makes the correct pump. All Corvette small block pumps are considered short pumps. Can you post a link to the pump you are considering?
Le Mans Master
Joined: Sep 2001
Posts: 7,739
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From: Unreconstructed, South Carolina
I've been told that Corvettes have specific water pumps. My '81 appears to be a short pump, as it is 5 5/8". My question is: is it a standard short pump, or is it configured differently. If I don't get the "Corvette" water pump, will I have pulley alignment or some kind of clearance issues?
Standard short is about 5.625" and was on vettes thru 1970. Beginning 1971 vette sbc pumps are a bit longer.
Yours should be about 5.795" or 5.8" with a 3/4" OD pilot. Ask for pump for 350ci 71 thru 82 corvette only.
If you use a standard the pulleys won't align properly.
also, both standard & vette can be had with 5/8" pilot ... your 81 pilot should be 3/4"
Le Mans Master
Joined: Aug 2006
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From: mount holly NC
2025 c3 ('74-'82) of the Year Finalist - Unmodified
2019 C3 of Year Finalist (appearance mods)
Le Mans Master
Joined: Sep 2001
Posts: 7,739
Likes: 630
From: Unreconstructed, South Carolina
Stewart stage 2 pn 23103 is correct and is among best there is ... $155 Summit.
https://www.stewartcomponents.com/in...rice&order=ASC
https://www.summitracing.com/parts/emp-23103
