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Old 08-16-2012, 04:18 PM
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What engine? The older engines were not designed to run at a high temp. The newer engines run at a higher temp as designed. If it's an older engine (computerless), I would have them come on at around 210ish. If it's a newer type, 230ish would be safe. Also, make sure you put the correct thermostatic switch in. I installed a switch in an older SBC 350 but it would not work. Come to find out the switch was made for a computerized system. It does make a difference. Good Luck.
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