5/8 Ball Valve
Thread Starter
Instructor
Joined: Dec 2020
Posts: 126
Likes: 27
From: Mesa, AZ
5/8 Ball Valve
Hello everyone,
I'm replacing most of the cooling system components and took off the frozen 5/8ths Four Seasons shut off valve that I could pick up at Autozone. I don't care for this style and much rather prefer going the ball valve route. Searching around Amazon and ebay shows a lot of Chinese made stuff and I don't have the greatest of confidence in it. Did a search on the forum here and got a few leads but most are from many years ago and the valves have been discontinued. This is for a 74 350 short block to turn off the inlet to the heater core. Any guidance or leads would be much appreciated. Thank you.
I'm replacing most of the cooling system components and took off the frozen 5/8ths Four Seasons shut off valve that I could pick up at Autozone. I don't care for this style and much rather prefer going the ball valve route. Searching around Amazon and ebay shows a lot of Chinese made stuff and I don't have the greatest of confidence in it. Did a search on the forum here and got a few leads but most are from many years ago and the valves have been discontinued. This is for a 74 350 short block to turn off the inlet to the heater core. Any guidance or leads would be much appreciated. Thank you.
Le Mans Master
Joined: Jun 2019
Posts: 7,649
Likes: 2,466
From: Indiana
Hello everyone,
I'm replacing most of the cooling system components and took off the frozen 5/8ths Four Seasons shut off valve that I could pick up at Autozone. I don't care for this style and much rather prefer going the ball valve route. Searching around Amazon and ebay shows a lot of Chinese made stuff and I don't have the greatest of confidence in it. Did a search on the forum here and got a few leads but most are from many years ago and the valves have been discontinued. This is for a 74 350 short block to turn off the inlet to the heater core. Any guidance or leads would be much appreciated. Thank you.
I'm replacing most of the cooling system components and took off the frozen 5/8ths Four Seasons shut off valve that I could pick up at Autozone. I don't care for this style and much rather prefer going the ball valve route. Searching around Amazon and ebay shows a lot of Chinese made stuff and I don't have the greatest of confidence in it. Did a search on the forum here and got a few leads but most are from many years ago and the valves have been discontinued. This is for a 74 350 short block to turn off the inlet to the heater core. Any guidance or leads would be much appreciated. Thank you.
https://www.mcmaster.com/4082T14/
they also list country mfer..
see post 8 and 13
https://www.corvetteforum.com/forums...e-79-w-ac.html
Last edited by interpon; Feb 13, 2021 at 03:17 PM.
2026 Loser of the Year
Joined: Sep 2013
Posts: 36,579
Likes: 7,018
From: New Or-leens Loo-z-anna
For what it's worth....
I installed electrically operated valves on the heater inlet hose AND the heater return hose (vacuum valves will also work depending on the type of heater controls the car has).
When the heater is turned on both valves open to allow hot coolant into the heater core.
This saves me the trouble of opening/closing ball valves multiple times when the weather changes. (I didn't mind the effort the 1st year)
(I'm thinking two valves will eliminate any possibility of hot coolant from entering the heater core on hot summer days
).
I installed electrically operated valves on the heater inlet hose AND the heater return hose (vacuum valves will also work depending on the type of heater controls the car has).
When the heater is turned on both valves open to allow hot coolant into the heater core.
This saves me the trouble of opening/closing ball valves multiple times when the weather changes. (I didn't mind the effort the 1st year)
(I'm thinking two valves will eliminate any possibility of hot coolant from entering the heater core on hot summer days
).
Melting Slicks
Joined: Sep 2004
Posts: 3,223
Likes: 666
From: Northeast
Link to 74 AIM, SB with AC. Perhaps non ac got the valve?
https://www.corvetteforum.com/forums...alve-need.html
Doc Rebuild's solution ?
https://www.corvetteforum.com/forums...ater-core.html
https://www.corvetteforum.com/forums...alve-need.html
Doc Rebuild's solution ?
https://www.corvetteforum.com/forums...ater-core.html
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