Shouldn't you be sticking it directly in the top of the rad? Coolant overflow may not always be used so may not properly reflect the temp of the coolant in the rad.
-- Edited by Astro Jet at 12:25, 2008-08-08
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Hillar
1970 LS4 (eventually an LS5) Laurentian 2dr hdtp -and a bunch of other muscle cars...
OMG Hillar !! .....I got a 450 degree automotive probe style thermometer. We take the temp at various locations on the block BUT the hottest and most consistent seems to be at the intake manifold behind the thermostat housing. We checked Darryl's car too because he has a trio set and the reading seem accurate enough at least within 10%. The readings may not be spot on but 187 is a far cry from the 250 the first gauge showed espepcially when Darryl's reads so close to his trio gauge. It is accurate enough to prove the gauge wrong and the new gauge reading 190 correct in my opinion.
My car was running 205-210 by the electric autometer guage I am installing new aluminum rad TODAY Will let you know how it works.. Supposed to drop temp 20 degrees.....
I swapped out my old t-stat for a GM performance parts 180 degree one. Sure enough ,the old one was stamped 195. Anyway, I fired her up, bled out the air and went for a long drive. The needle stayed at the half way mark, even when I drove the car like gas was only 50 cents a gallon! I'm happy.
Yes, you are right. I did the t-stat during the time I did the cam. I simply picked one up at Carquest and didn't even think to look at the temp rating! Live and learn!