Guys, I have a heating issue that I cannot, for the life of me, figure out!
Here's the issue. I put in a new 5.0 short block. The motor has less than 50 miles on it. It was running good for a week or so (hence the 50 miles), then it suddenly started overheating. The temp will slowly rise to about 200, then move quicker to 220, after that it spikes - I mean literally JUMPS to 230-240. That's when I scramble to kill the engine.
I pulled the heads, thinking it was a head gasket. Sent them to the machine shop for reconditioning, cleaning, magnafluxing, and resurfacing. Put them back on the motor with FelPro 9333 gaskets. Drained and flushed the oil. Replaced oil and filter. Also put on a new water pump, intake gaskets, thermostat, and installed a new 3 core radiator.
When it was all done, I fired it up, giving it a few minutes to evacuate the air out of the system. Everything looked good, then after 10 minutes of running, it did it again!!! The upper rad hose was still cold. Like the thermostat didn't even open (it's the 4th thermostat I've installed troubleshooting this issue!) WTF??
I'm out of ideas.
Mike - 95 Cobra SVT 5.0
Here's the issue. I put in a new 5.0 short block. The motor has less than 50 miles on it. It was running good for a week or so (hence the 50 miles), then it suddenly started overheating. The temp will slowly rise to about 200, then move quicker to 220, after that it spikes - I mean literally JUMPS to 230-240. That's when I scramble to kill the engine.
I pulled the heads, thinking it was a head gasket. Sent them to the machine shop for reconditioning, cleaning, magnafluxing, and resurfacing. Put them back on the motor with FelPro 9333 gaskets. Drained and flushed the oil. Replaced oil and filter. Also put on a new water pump, intake gaskets, thermostat, and installed a new 3 core radiator.
When it was all done, I fired it up, giving it a few minutes to evacuate the air out of the system. Everything looked good, then after 10 minutes of running, it did it again!!! The upper rad hose was still cold. Like the thermostat didn't even open (it's the 4th thermostat I've installed troubleshooting this issue!) WTF??
I'm out of ideas.
Mike - 95 Cobra SVT 5.0