Looking for BBC water pump recommendation
Thread Starter
Race Director
Joined: Jun 2000
Posts: 10,046
Likes: 675
From: FL
Looking for BBC water pump recommendation
OK, here is situation. Running March Performance serpentine setup with Edelbrock 8850 water pump. Investigating speaking belt and discovered that there is play in water pump shaft. 
This is Edelbrock pump number 2. First one starts leaking from the weep hole at about 16k miles. No play on shaft. This one has only maybe 5k on it.
Want to stay with an aluminum pump. Also needs to have 5/8" shaft to fit the March Pulley. The Edelbrock also has countersunk screws on the back plate so no issues with my aluminum timing chain cover.
Options:
- Edelbrock 8850. Again. $$$.
- Stewart Stage 2. Reviews on Summit mention that bolts on back plate touch timing chain cover and that centerline of pulley is lower than stock.
- Weiand Team G or Action Plus. Reviews say they leak from back plate.
- Tuff Stuff 1495AC. No reviews out there but I have their PS pump and it works well. Looks like it also has the bolts on the back plate to deal with.
Anybody got any suggestions for a good water pump. Aluminum, 5/8" pilot, short BBC profile and will clear aluminum timing chain cover.
This is Edelbrock pump number 2. First one starts leaking from the weep hole at about 16k miles. No play on shaft. This one has only maybe 5k on it.
Want to stay with an aluminum pump. Also needs to have 5/8" shaft to fit the March Pulley. The Edelbrock also has countersunk screws on the back plate so no issues with my aluminum timing chain cover.
Options:
- Edelbrock 8850. Again. $$$.
- Stewart Stage 2. Reviews on Summit mention that bolts on back plate touch timing chain cover and that centerline of pulley is lower than stock.
- Weiand Team G or Action Plus. Reviews say they leak from back plate.
- Tuff Stuff 1495AC. No reviews out there but I have their PS pump and it works well. Looks like it also has the bolts on the back plate to deal with.
Anybody got any suggestions for a good water pump. Aluminum, 5/8" pilot, short BBC profile and will clear aluminum timing chain cover.
Last edited by SteveG75; Feb 21, 2021 at 11:31 PM.
Le Mans Master
Joined: Nov 2016
Posts: 9,258
Likes: 950
From: Lake Tahoe, CA
https://www.kmjperformance.com/search.html?q=water+pump
https://www.kmjperformance.com/i-316...3Dwater%2Bpump
Never used this brand but maybe give them a call.
https://www.kmjperformance.com/i-316...3Dwater%2Bpump
Never used this brand but maybe give them a call.
Melting Slicks
Joined: Dec 2009
Posts: 3,233
Likes: 657
From: Thunder Bay
I have had an Edelbrock pump for about 20 years with no problems so I would suggest you might have something else going on. They offer a rebuild service so I had them do mine a few years back when I was changing engines. Cost was pretty reasonable - about the cost of a good replacement pump (if there is such a thing nowadays).
Thread Starter
Race Director
Joined: Jun 2000
Posts: 10,046
Likes: 675
From: FL
Well, got in touch with Edelbrock tech support. They are moving the rebuild facility so can't so anything for me until March/April. 
Trying to get confirmation from Stewart on their pump centerline. Found a thread on Chevelle board that says they lowered the pump axis 3/4". Same comment on pump review on Summit racing. That won't work with my serpentine belt pulleys.
Trying to get confirmation from Stewart on their pump centerline. Found a thread on Chevelle board that says they lowered the pump axis 3/4". Same comment on pump review on Summit racing. That won't work with my serpentine belt pulleys.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Thread Starter
Race Director
Joined: Jun 2000
Posts: 10,046
Likes: 675
From: FL
Thread Starter
Race Director
Joined: Jun 2000
Posts: 10,046
Likes: 675
From: FL
Probably made in China, but anyone have experience with the Speedway Motors pump.
https://www.speedwaymotors.com/Big-B...Pump,7035.html
$60
https://www.speedwaymotors.com/Big-B...Pump,7035.html
$60
