JOHNNY MILLER Posted September 20, 2018 Share Posted September 20, 2018 ANYBODY HAVE LUCK WITH A HELPER FAN (PUSHING), IF SO WHAT BRAND. PROBLEM 1972 ORIGNAL 402 LIKES TO RUN 200 TO 225 NEW 4 CORE ALUMIUM RADIATOR, NEW WATER PUMP ECT. ANY ADVICE WOULD ME GREAT AND APPRECIATED Quote Link to comment Share on other sites More sharing options...
72-CLASSIC_RIDE Posted September 20, 2018 Share Posted September 20, 2018 Have you checked your thermostat? What Temp is it designed to Open/Close? Also, what is reading your Temp? Possibly a false reading? Historically, what temp was it running before? Do you have the correct Radiator Pressure Cap? I have a 402 and my factory temp gauge doesn't get above 190 degrees tops in the hottest days but I don't believe that gauge is all that accurate either. I haven't worried about it since I put a 2 Core Aluminum Radiator in around 7 years ago. I have heard Big Blocks don't like heat, so the lower you can maintain that Temp, I guess all the better. Good luck. Doug Quote Link to comment Share on other sites More sharing options...
A_Rescue Posted September 20, 2018 Share Posted September 20, 2018 If the cooling system is functioning and the gauges are intact... check the ignition timing.... john Quote Link to comment Share on other sites More sharing options...
Leghome Posted September 20, 2018 Share Posted September 20, 2018 I had a bad sending unit in one of my vehicles that acted the same way Quote Link to comment Share on other sites More sharing options...
JOHNNY MILLER Posted September 20, 2018 Author Share Posted September 20, 2018 THANKS FOR ALL THE INFROMATION 160 DEGREE THERMOSAT.GAUGE COULD BE OFF, BUT IT VALOR LOCK ONE TIME. THAT WHAT GOT ME WORRIED. THAT THE REASON I WAS THINKING OF HELPER FAN. ENGINE IS OLD COULD NEED REBUILTING. THANKS Quote Link to comment Share on other sites More sharing options...
dejh22 Posted September 21, 2018 Share Posted September 21, 2018 Do you have a fan shroud? Do you have the bypass hose installed? Quote Link to comment Share on other sites More sharing options...
JOHNNY MILLER Posted September 21, 2018 Author Share Posted September 21, 2018 YES, BUT FAN IS ABOUT 6 INCHES FROM FAN Quote Link to comment Share on other sites More sharing options...
dejh22 Posted September 22, 2018 Share Posted September 22, 2018 The fan should be inside the tunnel. I run a flex fan with a 2" spacer. I have the correct big block shroud with the tunnel. The tunnel is the same on small block and big block. I'm running a 180 thermostat. On a hot summer day my big block will run at about 190. Let me add that I just rebuilt the engine a year ago. Quote Link to comment Share on other sites More sharing options...
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