I'm running a 350 chevy in my '88 -- and can't shake an overheating issue. I had the truck running for a few years with a griffin rad, and it ran super cool, no matter what the temps -- dead of summer 95 degrees and humid, truck ran at a rock steady 190 degrees. Since then, the griffin rad sprung a leak, and I replaced with a novack kryo-flow, with integrated shroud with 3 e fans. I'm having chronic overheating issues on the highway... drove it yesterday in about 95 degree heat. It takes a while, but temps keep creeping around 210, then 230.. then I hit traffic, and I was done. Had to pull over and let everything cool off.
so, before I return this rad to novack, here's what I've done. Let me know if I'm missing anything:
1) pulled *everything* away from the front of the truck. I removed the Winch, lights, everything. nothing impeading airflow. didn't help.
2) drained, flushed, and replaced antifreeze. changed all hoses in case there was some blockage I was missing. no difference.
3) pulled the thermostat completely. Took a little longer to overheat, but other than that, no difference.
4) replaced water pump. No difference.
5) I *do* have a stock a/c condenser and trans cooler in front of the rad -- but I had the same set up using the griffin rad, and it didn't cause issues. Just to make sure, I drained the a/c, pulled the condenser, and tried running without it. No difference (can't really pull the trans cooler, since the kryo flo rad doesn't have a trans input,but that thing is pretty small)
6) I've confirmed all three e-fans are running properly, and kick on right at 190degrees.
is there ANYTHING else I can try? I'm sure novak will replace the rad, but I want to run down everything before I go this route.
so, before I return this rad to novack, here's what I've done. Let me know if I'm missing anything:
1) pulled *everything* away from the front of the truck. I removed the Winch, lights, everything. nothing impeading airflow. didn't help.
2) drained, flushed, and replaced antifreeze. changed all hoses in case there was some blockage I was missing. no difference.
3) pulled the thermostat completely. Took a little longer to overheat, but other than that, no difference.
4) replaced water pump. No difference.
5) I *do* have a stock a/c condenser and trans cooler in front of the rad -- but I had the same set up using the griffin rad, and it didn't cause issues. Just to make sure, I drained the a/c, pulled the condenser, and tried running without it. No difference (can't really pull the trans cooler, since the kryo flo rad doesn't have a trans input,but that thing is pretty small)
6) I've confirmed all three e-fans are running properly, and kick on right at 190degrees.
is there ANYTHING else I can try? I'm sure novak will replace the rad, but I want to run down everything before I go this route.