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hotrodcbx · 04-14-2021, 07:26 AM

There was an interesting test on horsepower draw using various fan types on you tube (believe it was motor wars). Dyno tests showed the "flex" type fan, as used by Coopman showed the worst fan for horsepower loss. The least loss was from the viscous type fan which is basically a temperature driven clutch type fan. Back in the day I ran a flex fan on my SS/H Cobra Jet after removing the clutch fan. My best time was 11.56 at 112 mph. Wish I still had that car, I sold it in 1975 when you couldn't give those cars away for $1000.00. Probably could have shaved 1/10 second if I left the stock one on.

04-14-2021, 07:26 AM	#8
hotrodcbx Senior Member Join Date: Jul 2010 Posts: 136	Re: Electric fan over a belted fan There was an interesting test on horsepower draw using various fan types on you tube (believe it was motor wars). Dyno tests showed the "flex" type fan, as used by Coopman showed the worst fan for horsepower loss. The least loss was from the viscous type fan which is basically a temperature driven clutch type fan. Back in the day I ran a flex fan on my SS/H Cobra Jet after removing the clutch fan. My best time was 11.56 at 112 mph. Wish I still had that car, I sold it in 1975 when you couldn't give those cars away for $1000.00. Probably could have shaved 1/10 second if I left the stock one on.