Generation IV Internal Engine 2005-2014 LS2 | LS3 | LS7 | L92 | LS9

6.0 Sewing Machine noise, source found.

Thread Tools
 
Search this Thread
 
Old Aug 16, 2025 | 09:58 PM
  #1  
Planefixer4's Avatar
Thread Starter
Registered User
 
Joined: Aug 2025
Posts: 4
Likes: 1
Default 6.0 Sewing Machine noise, source found.

2014 Caprice PPV. DOD delete, TSP Stage 1 can, Speed Engineering long tubes....etc.
So, the noise is really annoying. I found the source of it....for the most part. As I was cruising at about 40-50mph, the noise is most prevalent. I took off my flip flops (florida) and slid my feet towards the firewall. As soon I hit the firewall....the sound diminished significantly. I thought I was losing my mind. So I did it again, same results. The next day, I had another person in the car....same situation, and they confirmed a noticeable difference in the noise.
Just send this out there because I KNOW we all hate the noise. GOOD LUCK
Reply
Old Aug 17, 2025 | 12:18 PM
  #2  
wannafbody's Avatar
TECH Senior Member
20 Year Member
Community Builder
Liked
Loved
iTrader: (3)
 
Joined: Apr 2006
Posts: 5,642
Likes: 1,160
From: Pittsburgh
Default

You think it's a vibration noise?
Reply
Old Aug 17, 2025 | 03:41 PM
  #3  
Planefixer4's Avatar
Thread Starter
Registered User
 
Joined: Aug 2025
Posts: 4
Likes: 1
Default

No, it's not vibration. It's simply the valvetrain making it's normal noise that is exaggerated by stiffer valve springs, more cam lobes, and thin wall header pipes.
Reply




All times are GMT -5. The time now is 08:05 PM.

story-0
10 Reasons Daily Driving a Swap Project SUCKS! (& 1 Reason to Do It Anyway)

Slideshow: 10 reasons daily-driving a swap project might not be for you. Or is it?

By Michael S. Palmer | 2026-06-17 09:39:05


VIEW MORE
story-1
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-09 14:55:56


VIEW MORE
story-2
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-06-18 10:26:23


VIEW MORE
story-3
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-4
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-5
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-6
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-7
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-8
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-9
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE