Running Hot On Highway Corrected...
Race Director
Joined: Oct 2002
Posts: 12,065
Likes: 2
From: Smalltownville Michigan
Cruise-In 5, 6 & 10 Veteran
St. Jude Donor '09
not sure about that flapper door on the L-82s.. i have the indy spoiler on mine too.. i think it helps with cooling as well as helps to stick the nose of the car down as well at speeds...
Burning Brakes
Joined: Apr 2003
Posts: 844
Likes: 0
From: Central KY
Originally Posted by glen242
At 70 MPH, shouldn't there be enough air flow through the rad to make the fan superfluous?
Drifting
Joined: Jun 2004
Posts: 1,881
Likes: 9
From: staten island ny
DO you think it pays to replace the fan clutch for 50 bux or so or go 40 bux for a flex fan? Just how noisy are those flex fans? I'm grasping at straws here because I dont know exactly why it runs hot on the hiway. I hate to just keep throwing money around but the 220 temps on the hiway concern me. Since everything elsi is brand new, water pump, 4 row rad, hi0flow thermostat etc I'm willing to try anything. If the clutch or flex fan doesnt do it than maybe the pace car spoiler.
ESU
ESU
Drifting
Joined: Sep 2004
Posts: 1,532
Likes: 4
From: Fairview Heights Illinois, near Saint Louis MO, STL C3 Shark
Im curious about this too. My 76 has same symptoms. I'll replace the radiator eventually, but I also suspect the clutch. The flex fans are pretty noisey in 1st gear. My brother had one on his 68 Chevelle LT-1 conversion. Sounded GOOD if you ask me. Kind of like a gear drive - sort of.
You guys mention a thermal clutch - this is opposed to what other kind of clutch?
Somebody else on the forum said you can feel or hear the fan clutch engage on the interstate, I'll have to say, I've never heard mine kick in so Im sure mine isn't working properly.
You guys mention a thermal clutch - this is opposed to what other kind of clutch?
Somebody else on the forum said you can feel or hear the fan clutch engage on the interstate, I'll have to say, I've never heard mine kick in so Im sure mine isn't working properly.
