Whirling noise
Melting Slicks
Joined: Dec 2009
Posts: 3,233
Likes: 657
From: Thunder Bay
Hard to say based on your description alone, but I suspect it's the fan blade. The original fan clutches allowed the fan to freewheel until it got hot. Those clutches are no longer available. Modern clutches are much 'stiffer' and do not permit as much freewheeling. The result is a noisy fan. I had to replace my original fan clutch a couple of years back. I researched the heck out of it, but you simply cannot get original spec fan clutches, unless you get lucky and find something NOS. The noise is annoying but I've learned to live with it.
1967 Pedal Car Champion
Joined: Mar 2020
Posts: 9,137
Likes: 4,247
From: US-PNW
Hard to say based on your description alone, but I suspect it's the fan blade. The original fan clutches allowed the fan to freewheel until it got hot. Those clutches are no longer available. Modern clutches are much 'stiffer' and do not permit as much freewheeling. The result is a noisy fan. I had to replace my original fan clutch a couple of years back. I researched the heck out of it, but you simply cannot get original spec fan clutches, unless you get lucky and find something NOS. The noise is annoying but I've learned to live with it.
"Is something wrong? I don't know..." <VGG>
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Is my vette stock?? HAHA
Joined: Oct 2015
Posts: 20,213
Likes: 9,352
From: Im not allowed to tell you
2020 C3 of the Year Finalist - Modified
2020 Corvette of the Year Finalist (performance mods)
2019 C3 of Year Winner (performance mods)
2016 C3 of Year Finalist
maybe your clutch arm is adjusted in to far and your throw out bearing is constantly spinning on the cltuch fingers and now is wearing