|
|
|
|
Joined: Oct 2006
Posts: 19
Grease Monkey
|
OP
Grease Monkey
Joined: Oct 2006
Posts: 19 |
Just had my radiator boiled and rodded out and need to know if I need to use a 4# or no pressure radiator cap. I have several locals tell me non pressure, and some tell me to use a 4# cap. Both can be purchased at Chev's of the 40s and National Chevy, but I do not want to get the wrong one.
Thanks, Roger
19514me
|
|
|
|
|
Joined: Jun 2005
Posts: 934
ChatMaster - 750
|
|
ChatMaster - 750
Joined: Jun 2005
Posts: 934 |
Roger, I use a 4# on my 53 truck and you can purchase one at Nappa auto parts...Oscar 
OSCAR ALBRETSEN
|
|
|
|
|
Joined: Jan 2002
Posts: 30,701 Likes: 141
ChatMaster - 25,000
|
|
ChatMaster - 25,000
Joined: Jan 2002
Posts: 30,701 Likes: 141 |
Pressure cap history-
1948 cars all had a 4 lb. cap - first year.
1949 cars did not have a pressure cap.
1950-51 stick shift cars did not have a pressure cap.
1950-52 Power Glides had a pressure cap.
1952 sticks had a pressure cap.
1953 all had a pressure cap.
Up to this point they were all a 4 pound.
1954 all had a 7 pound cap, which was used thru 1957.
The "book" says a 1951 stick (and other non pressure cars) can use a pressure cap for "heavy duty" operation.This would include higher altitudes and mountain country.
If the radiator is in good condidtion there is no reason that a 7 pound could not be used in place of the 4 pound.
Last edited by Chev Nut; 06/04/07 05:59 PM.
Gene Schneider
|
|
|
|
|
Joined: Dec 2006
Posts: 837
ChatMaster - 750
|
|
ChatMaster - 750
Joined: Dec 2006
Posts: 837 |
Now that's the kind of answer we should all appreciate.
Thanks Gene very informative.
Denny Graham
Sandwich, IL
|
|
|
|
|
Joined: Oct 2006
Posts: 19
Grease Monkey
|
|
OP
Grease Monkey
Joined: Oct 2006
Posts: 19 |
Thanks for the replies. As always, appreciate the help. I think I can use the 4# since I live at about 5000 feet. The one that was on it was non pressure and worn out.
Thanks again, Roger
19514me
|
|
|
|
|
|
|
