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Re: Temperature switch for 350 SBC with modern heads
Man, I'd try to find an over-temp switch that closes at 200 or more. I'd say 210 would be more like it. Why? Because it's not uncommon for coolant temp to go up to 200 or more on a hot day in traffic, and even 210 isn't going to hurt your engine or blow coolant out of the radiator. And to me, a red warning light means "danger".
I have no idea at what temp a GM switch closed, but I'd guess it's 200 or higher.
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Mike
1969 C10 LWB -- owned for 34 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, AAW wiring harness, 5-lug conversion, 1985 spindles and brakes.
1982 C10 SWB -- sold
1981 C10 Silverado LWB -- sold, but wish I still had it!
1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming.
Retired as a factory automation products salesman.
Worked part-time over the years for an engine builder and a classic car repair shop.
Member here for 23 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then!
Last edited by MikeB; 01-23-2017 at 11:32 AM.
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