Re: Flex Fan vs Clutch Fan
After my personal experience with my 67' K10 I would say to go for the regular clutch fan. The flex fan was not able to pull the CFM I needed to keep the engine cool. The flex fan is "running" all the time (and sucking power all the time) were the clutch is able to engage/disengage based on the temperature. The flex fan is called a "flex" fan because the blades are supposed to flex and cause less drag, but they are also not pulling much air when "flattened" out. I will never use a flex fan (and never have, the PO had installed this one)
Just my $.02
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2002 Saturn SL2, My D/D
2019 Ford Fusion SE, Ecoboost - Wife's D/D
1993 Camaro Z28, A4, CAI, Cat-Back Exhaust
Project C10 (my 72' C10 w/96' LT1, 700R4, bagged F&R, 18's (for now), Short/Fleet) -- SOLD!
Build Thread: http://67-72chevytrucks.com/vboard/s...d.php?t=313644
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