I have a brand new Chev 350 crate engine installed and the previous 350 had the same problem of overheating up to 280F. I put a brand new downflow aluminum rad in it with an electric fan and it has a 180F thermostat. Everything is brand new including the water pump. Can anyone who is familiar with the 41 to 46 Chev tell me what I've done wrong. Most of the rodshops that I've looked at online say the minimum CFM airflow for the fan should be 2500CFM with a 70 amp relay. That sounds powerful. I don't know what the CFM of the 16" fan I put in is. I'm getting desperate to find out the solution. Can anyone help. Bob.T
Last edited by bobt; 03/28/2015 5:42 PM.
