75gmck25
Full Access Member
- Joined
- Oct 13, 2016
- Posts
- 2,236
- Reaction score
- 2,156
- Location
- Northern Virginia
- First Name
- Bruce
- Truck Year
- 1975
- Truck Model
- K25 Camper Special TH350 NP203
- Engine Size
- 5.7
In answer to the original question - 210 degrees is not a problem for the engine, but a good cooling system should keep it closer to about 5 degrees above the thermostat value (200 degrees with a 195 thermostat). Modern engines run as much as 230 degrees, but have electric fans that kick in to keep it from going higher.
I'm using a 195 degree high flow thermostat, Stewart stage 1 high flow water pump, HD fan clutch and metal blade OEM fan, and a Champion 3 row aluminum radiator I got from Jegs. This is by far the most stable combination I've had in my truck.
I also installed a Stewart Warner mechanical temp gauge so that I would get an accurate temperature measurement. Normal running temp is about 185-190 degrees, and I've never seen it higher than about 195, even while idling with the A/C on in 90 degree weather.
Bruce
I'm using a 195 degree high flow thermostat, Stewart stage 1 high flow water pump, HD fan clutch and metal blade OEM fan, and a Champion 3 row aluminum radiator I got from Jegs. This is by far the most stable combination I've had in my truck.
I also installed a Stewart Warner mechanical temp gauge so that I would get an accurate temperature measurement. Normal running temp is about 185-190 degrees, and I've never seen it higher than about 195, even while idling with the A/C on in 90 degree weather.
Bruce