[hinoonaz]

Here goes my 2 cents. Hi volume water pump, drill two holes in thermostat and the fan shroud has a good seal with large cfm fan. I suffered through overheat issues for a long time. When the engine was rebuilt I had the shop drill and tapped holes in the intake manifold across the firewall end (used marine grade fittings and line) with a line going forward to water heater point. I have hit two hundred but was running high rpms for awhile. Immediately goes back to 180-185. In Arizona at 110 no problems. Stop and go non issue.