C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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Old Sep 19, 2010 | 10:43 PM
  #1  
JED77Vet's Avatar
JED77Vet
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Cruising
 
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Default Flex Fans

Have any replaced their clutch fan with a flex fan? If so, what brand?

Any improvement in HP or cooling problems?
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Old Sep 20, 2010 | 07:34 AM
  #2  
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markdtn
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From: Chattanooga TN
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You will not have a HP increase, in fact it will decrease. Car Craft May 2000, page 50 and 51. Dyno test. Max power:

alternator, no fan 496 hp
plastic flex fan 460 hp
low-profile flex fan 466 hp
hi-perf flex fan 476 hp
6-blade rigid fan 449 hp
4-blade ridid fan 473 hp
HD thermal clutch fan 476 hp
thermal clutch fan 487 hp
non-thermal clutch fan 485 hp
alternator, electric fan 494 hp
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Old Sep 20, 2010 | 12:43 PM
  #3  
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cv67
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From: altered state
St. Jude Donor '05
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had no idea the plastic one sucked so much power.
Used to run one on mine and loved it because it was so light and wasnt noisy, going to strictly electric these days and give that a try.

Every metal flex fan Ive used except for one eventually let go of a blade and took out a water pump bearing with it.
Dangerous if youre under the hood!
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