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Old 03-06-2019, 06:23 PM   #25
alsriv2
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Join Date: Sep 2010
Location: Formerly MD and San Diego, now loving life in Arizona
Posts: 1,636
Re: How hot do Big Blocks normally run?

My BB396 was built professionally 7 years ago. (Shown in profile picture) We finally got the truck up and running just last year after much work. The truck has a 3 core radiator, a fixed fan with no shroud and always runs cool, even here in the SE Arizona desert. The heads are from a '71 402, meaning they are not the small peanut port heads. We actually had to add a 180 thermostat as the Holley Sniper control system did not like the cool temps. It was nothing to see the truck at 80mph/3000rpm stay cool at 160deg. The Holley system is a bit happier now, but the TQ converter is all wrong for the Cam installed. That will be the next item I have to fix. I wish I could give better details on timing and such, but we have it set for the builders dyno setup at 34 all in. Per the builder, I am NOT running vacuum advance, we are running a full MSD ignition that is also tied into the Sniper control system. TO say that I am happy after 7 years of pain would be an understatement.
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Alan

2012 Ram 3500 Dually Crew Cab 6.7 Cummins
2014 Palomino Columbus 340RK 5th wheel
'69 Chevy C10 396BB
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