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I have a chevvy 454 in a HRC Imperial. On a return trip home I noticed that the temp had risen to about 210. It has normally run about 190. After doing the usual things, changing the hoses, fan clutch and water pump. It still continued to run hot. At this point I installed a larger radiator and all electric fans. Still no help. I did have an Edlebrock timing control on it and I removed it and no help. The faster that I drive it the hotter it gets. I have used all sorts of thermostats in it. From a Catapillar thermostat to a 160 degree thermostat.
I am at my wits end with this problem,. And I hate to admit it but I am and ASE Master Tech with 44 years in the field. But if anyone has any suggestions I would greatly appreciate them. I did remove the heads and had them checked for cracks and they were ok.
gain Thank you for any help at all
Al CArroll |