Gold Lifetime Member
Join Date: Jan 2005
Location: 2 Dog Town in West Texas
Re: Engine overheating
My first thought was to make sure all air was out of the system, even if it meant pulling one heater hose , on the pump and watch to see if air is not in the area, fill the hose and reinstall, get motor running and don't fill full, with the cap off , look down inside the core tubes, is water flowing .
As someone mentioned, about the correct head gaskets , you may have covered a block jacket hole.
As for the water pump, if you do pull it and replace, look for water pumps with the enclosed or covered impellers.
I believe Elderbrock started this using enclosed impellers, Then others followed, What this does is keep cavitation out of the pump. I use a Stewart pump. There are also 'cooler discs" that are nothing but a flat round plate riveted to any open impeller pump. Cost less than $10 .
When you replaced the water pump, its been known to drill two 3/16" holes in the flat plate. This allows water to flow before that stat temp rises. I use 170į stat.
Check to see if your cap is holding 16#. You didn't mention what fan or clutch you are running.
Hope that helps. Ignore what I repeated from others.
Consider this if you have to replace head gaskets, Felpro has gaskets that give you instructions to drill additional water passage in block, to match heads.
TC # 349
Zdld17:69 Z/RS,306, NOR141111, 9N554XXX, 12A, X3G, 59/59,723, AFR 195,CCC282/290HR, TKO 600, BU1122B1E Owner since Dec 1968
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.