The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 71 350 running hot coolant backup up problem

**Gregski** · 01-27-2018, 08:00 PM

so after she went back all together it was time to test, and to keep things fair and compare apples to apples, I put it all back to the way the General intended

FIRST TEST POST SHORT WATER PUMP SWAP

so 195* Thermostat, Short Water Pump, no bypass hose (heater core delete, remember) and running only water

RESULTS = Favorable but not there yet

the truck did not get hot idling in the garage after 15 minutes like it used to, it used to reach 205* just sitting there, I let it idle for 40 minutes and it just eventually got to 190*

so I took it for a TEST DRIVE...

and gosh darn it I saw it climb to 215* that aint right!!!

01-27-2018, 08:00 PM	#72
Gregski Post Whore Join Date: Aug 2014 Location: Sacramento, CA Posts: 10,810	Re: 71 350 running hot coolant backup up problem so after she went back all together it was time to test, and to keep things fair and compare apples to apples, I put it all back to the way the General intended FIRST TEST POST SHORT WATER PUMP SWAP so 195* Thermostat, Short Water Pump, no bypass hose (heater core delete, remember) and running only water RESULTS = Favorable but not there yet the truck did not get hot idling in the garage after 15 minutes like it used to, it used to reach 205* just sitting there, I let it idle for 40 minutes and it just eventually got to 190* so I took it for a TEST DRIVE... and gosh darn it I saw it climb to 215* that aint right!!!