Well this is kind of the thing that I was getting at with the effects of underhood heat. I know that the Doug's introduce ALOT of heat to the engine compartment and early Fbodys are notorious for not evacuating the heat with any kind of efficiency even in stock form. Add 10.7 CR, 500hp and headers that probably would glow in the dark under normally running temp and its definitely a puzzle to be worked out. So far it doesn't seem like the Taurus fan is the magic bullet that some tout it to be, for my car anyway.
I can't really see how changing from a 160 Thermo to a 190 will make any difference because they will both be fully open at the point where the heat begins to be an issue. Seems like it would only limit open flow for a bit longer for faster warm up time. But it won't cost anything and it takes one for thing out of the equation.
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Robert
69 Firebird-462/Edel round ports/currently running the Holley Sniper/4sp/3.23posi/Deluxe Int/pwr st/vintage air/4wl disc( a work in progress-always )
http://youtu.be/eaWBd3M9MN4
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