Solving heat soak gas vaporization with elec fan

[Ranger16]

Going from a factory 190° thermostat to a 180° and adding a should to my 383 with a stock 7 blade direct drive fan solved my problem, but then I am running stock exhaust manifolds so my experience may be irrelevant.

 

[Don Frelier]

I wrapped the headers on my 383 I'm sure that helps, it's not super hot when I shut it off.
But I have a hood scoop so the heat can escape when parked.
You could run a pusher fan and still leave the mechanical fan.
I think 5-10 minutes without the engine running would not run down the battery too much.

 

[beanhead]

My 440 with TTI headers and 850 demon would run at or above 200 and boil gas after driving even in nice weather. Switched to an RV 7-blade fan and clutch for more airflow at idle. Tuning was a factor, too. Dialed in mixtures and timing and that helped. Added a 1" phenolic carb spacer and wrapped fuel line with some DEI-brand thick adhesive foil tape stuff, even back at the tank where the line gets around the exhaust. After prolonged driving around town in 100°+ temps it will read 194-195° with the IR gun and no more gurgling at the bowl vents and runs mid-180s most of the year

 

[chtampa]

I blocked the heat crossover with stainless sheet metal at the Valley Cover, installed a 1/2" wood spacer under the carb, added the 440 return line to my 383 RoadRunner with a 22" radiator. Eliminated my problem with "Global Warming".