temp gauge question

[LockDoc]

Originally Posted by Day 2 C10

what I have is a 4 core radiator with twin electric 13" fans plus a factory shroud with a 160 fan clutch on a old 426 hemi aluminum blade fan (my off topic stuff is all gen 2 hemis) the grill area is shrouded to force the most air into the rad. the water pump is a moroso short hi flow unit the intake has been modified to have rear to front external lines. Plus it runs a big block style bypass in the front

engine bay pictured (its a 621rwhp street truck at @5500-6000ft elevation)

I wonder if the restrictor isn't slowing down the water flow enough. Especially with the high flow pump. If the water flows through the radiator too fast it will not cool it enough to cool the engine down. I would try installing a thermostat and see what it does.
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