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Old 04-25-2017, 01:11 PM
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Tom Wells Tom Wells is offline
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Cobra Make, Engine: E-M / Power Performance / 521 stroker / Holley HP EFI
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Mike,

I run the 180 and it seems fine. Running temp is in the 190-210 range. I use a 16lb cap.

What temp the engine needs to run correctly seems to be a 6-beer discussion, so just my opinion that the 190-210 range is fine.

I do put a small hole in the flange of the thermostat to allow air to escape even if it isn't open. 3/32 is probably OK.

If you want the fan(s) to run less you might consider adjusting the on-off temps a bit. Mine come on at around 190 and off about 180.

Tom
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