A 160 thermostat won't fix anything. It's overheating because the temp of the
coolant is higher than that of the thermostat at all times menaing it's staying
open and coolant is not staying in the radiator to cool down. There is a such
thing as running too cold. Flex fans are junk...period. They flow LESS air
then the RPMs are in the mid range. You should be running a 180-185 thermostat
in a 402 along with a 19" 7 blade clutch fan and the correct fan shroud. GM
engineered this for a reason...it works. I have a stock cooling system on my
70 SS 454 and never have overheating problems with it. Another thing that
comes into play in this situation that alot of people don't realize is the size
of the water pump pulley. Does it have the correct one on it? Another water
pump won't fix anything if the pulley is the problem.
Tom Rightler
MCC Newsletter Editor
----- Original Message -----
From: Trooper
To: [EMAIL PROTECTED] ; The Chevelle Mailing List
Sent: Saturday, May 31, 2008 9:01 AM
Subject: Re: [Chevelle-list] Is there really a "high flow water pump?"
Dropping the temp of your thermostat will not affect an overheating problem.
----- Original Message -----
From: Jim H. Thompson
To: 'The Chevelle Mailing List'
Sent: Friday, May 30, 2008 6:53 PM
Subject: Re: [Chevelle-list] Is there really a "high flow water pump?"
Test show that if you have the proper capacity radiator that copper vs
aluminum is a break even.
Go to a 160 thermostat, flush the block, make sure your hoses are not
collapsing inside (do not take out that bottom spring). Test the pressure of
your radiator cap that's important for your over flow system. If you have a
clutch fan replace with an aluminum flex fan. Make sure your fan blades come to
the back lip of your shroud.
Jim
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of tabius
barrett
Sent: Friday, May 30, 2008 2:42 PM
To: [email protected]
Subject: [Chevelle-list] Is there really a "high flow water pump?"
Hello all...I have a 71 SS 402 and I am still fighting the summer time
over-heat monster. I plan to order an aluminum radiator soon but I remember
someone telling me that the so-called "high flow" water pumps are no better
than a standard water pump. My overheating seems to really occur at idle (stop
light, traffic, etc.). So here is the question: Has anyone really found a
high-flow water pump for my car and if so, where can i get it and how much?
Also, do you think the aluminum radiator will help?
Thanks,
tbDallas
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