Quote:
Originally Posted by dv657172
Revisiting this issue...sort of
While it sounds like a 20-25 degree temp increase is normal on a run, I am still bothered by how fast the temp increases at idle even when its just idling in my shop or in the staging lanes. Temperature also doesnt begin to cool down until I get back to my pit after a run and shut it off leaving the fan and WP running.
What size CFM fan should I be running?
Current electric fan is a SPAL 16" rated at 1,918 True CFM which I bought from Griffin along with radiator & shroud (see pic) many years ago. A couple websites I read recommend 3,000+ CFM for 400+ engines.
Car has 461", 16 heads, Meziere Heavy Duty Electric WP, and I use a 5/8" water restrictor in place of a thermostat. Have only ever run distilled water and car is dedicated drag car.
Car also has a seperate B&M SuperCooler Trans cooler in front of radiator.
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I run twin Spals rated at 4000cfm in a Derale Shroud with four relief flaps. Yours looks like a heat sink...not enough airflow and no flaps.
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466 Mike Voycey shortblock, 310cfm SD KRE heads, SD "OF 2.0 cam", torker 2,generic one inch open spacer
373 gears 3200 Continental Convertor
best et 10.679/127.5/1.533 60ft
308 gears best et 10.76/125.64/1.5471
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