[davepl]

Originally Posted by geezer#99

Swap out that 160 stat.
At present it stays wide open and your coolant doesn't have enough retention time in the rad to cool properly.
You need a stat that closes a bit to impede flow.
Try a 195 first.

Gotta disagree on this, it's an old wives tale that coolant needs to somehow "linger" in the radiator. No restriction or t-stat is required for cooling, only for proper warmup and operation. It's not worth an argument unless someone is genuinely curious, but increasing the t-stat set point won't help it run cooler.