454 Running Hot

turbojimmy wrote:

MitchF150 wrote:
What has been your maintenance schedule for the rad/coolant/engine in general?

Sounds like you have either old coolant, old T-stat, plugged rad or other??

Could even have a blown head gasket by the sounds of it??

As to the other oil cooling going thru the rad, that's normally fine, but if you are heating up like you are on the coolant, it's also heating up those other fluids too... Not so much the other way around.

Good luck!

Mitch

Thanks for the reply. I should have provided more info.

I bought the RV with a blown engine. It had sat for at least 6 years in a tow yard. I put a 20k-mile 454 in it. new water pump,new hoses, new thermostat. The radiator is original. The coolant I took out of it looked good (no signs of corrosion or anything).

I remember reading on here before from others with 454, that something about the water flow for the 454 used in RVs is not the same as the standard 454, and the impeller blades are reversed. If you bought the reguar 454 water pump, the impeller blades will be the wrong direction and it will not move much water. I'll search and see if I can find the thread, but I remember the problem was a lot like yours, and it took that poster much time and many parts to discover there was a difference.


Here is the link. Kind of an old thread but seems relevent to you.

http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/24281867.cfm