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Check to see if you have a water pump for racing, 440 source used to send them out without telling you and the fins were shaved down to redue flow at idle. thant was my problem and solved with a new mopar performance pump. Ralph

thank you

Does it matter which size hose mates up to the water pump housing. I have a 73 RR with a mopar hi po pump and it has two opening for the fitting at different locations - see photo. Does the 5/8" hose go inboard of the pump or does the 1/2" hose. I have heard that if its not correct you will...

I bought a new alum radiator and mopar performance water pump and housing and understand from some other threads that there is a way to plumb them in. I ave a 73 RR big block without air and it has a 1/2 " hose & 5/8" hose going to the heater core. I also want to have a water temp gauge...

thanks to all

Stupid question - rather ask first since this is my first time and I have alot invested in this car. Seems others would like to know as well. Dex cool & Proline stated on the container for aluminum radiators at PEP boys I am using green antifreeze now with copper radiator and alum heads and...

the one that stated for use in aluminum radiators was dex cool If i do not get any other feedback I will try dex cool Thanks for your assistance Ralph

I have aluminum heads on my 1973 RR 440 and decided to buy a aluminum radiator from champion for it. They stated I should use ethylene glycol anti freeze and distilled water for aluminum radiators. I looked at the auto parts store and they all have other ingredients added besides the ethylene...

what year are you looking for - I may have one Ralph

I took the heater box out of my 1973 roadrunner without ac and noticed the heater box rod support was missing. Does anyone know where i can get one or someone who has one they are willing to part with. Thanks for your assistance. Ralph

Has anyone used the Champion type radiator with the twin fans - see attachment. And have you good things to say about it. The Be Cool unit is pricey. Thanks for the information Ralph

Cooling system fix Thanks to everyone for helping me solve my cooling system problem. The solution was to get a mopar performance 8 blade water pump which did the trick. The previous one installed was a 440 source unit which look cut back for race applications - wrong application...

72 Sat, looks like the rear bracket on your PS pump is angled and pushing it too far forward towards the radiator Ralph

PS bracket Last two

PS bracket 72 sat, here are your photos on a 73 RR. two sets of photos

72Sat, thanks for the help on the cooling system. I will take a picture of mine tonight and post it for you - the bracket does not seem correct. I do not have that problem. Ralph

72 satellite 440, funny you should say that I noticed the water pump design did not look right so I looked up the Mopar performance water pump from Jegs and it looks different - 8 blades in a more aggressive design to accomaodate flow. So I ordered it and will try this first along with getting...

So far I have confirmed that the thermostat is good, the water pump is removed and looks solid from 440 source and pretty new. The radiator drains good when i pour liquid in the top and the hoses are off. Still with no thermostat at idle there seems to be no movement until I raise the RPM to...

how would i determine an air pocket ? Thanks ralph

I will pull it out and check it Thanks ralph