exhaust question ?
Thread Starter
Burning Brakes
Joined: May 2009
Posts: 1,014
Likes: 7
From: Ft Wayne IN
exhaust question ?
I bought my 92 with the factory exhuast removed from the cats back. They installed 2 3/4 or 3" pipes with the louder 40 series flowmaster mufflers and removed the resonator. The system sound nice but is just a hair to loud on the interior especially at hwy speed. Is there anything I can do besides change mufflers to help with the resonance. Will an H pipe installed change sound I was thinking of doing this anyway. In the future I will probably run some shorty headers. Im not sure what the stock system even looked like. were they true duals or did they go to duals after a resonator? Any sugestions?
Le Mans Master
Joined: Jan 2006
Posts: 6,564
Likes: 6
From: Woodstock Georgia
Factory is 2 3/4" pipes and true duals. The series 40 flowmasters will be loud, maybe find some LT1 stock mufflers if you want it quiet.
ps - some say shorty headers on the LT1 is just a waste of money.
ps - some say shorty headers on the LT1 is just a waste of money.
Melting Slicks
Joined: Jan 2009
Posts: 3,482
Likes: 196
From: folsom california
I had the exact same setup. Not only was it way too loud. the drone at freeway cruise was unbearable. I later found that the driver's side cat was completely blown out which couldn't have helped. I installed a Corsa exhaust which was expensive, but with which I am very satisfied.
For about a $1,000 less, try reinstalling the resonator.
Good luck and save the wave
For about a $1,000 less, try reinstalling the resonator.
Good luck and save the wave
Thread Starter
Burning Brakes
Joined: May 2009
Posts: 1,014
Likes: 7
From: Ft Wayne IN
I didn't do the exhaust so I don't have the resonator. Does the resonator restrict the exhaust ? does it quit the exhaust all around or just in the resonance rpm range? Does the X pipe make a diff in noise?
Drifting
Joined: Nov 2005
Posts: 1,324
Likes: 5
From: Charlotte NC
I wouldn't bother with shorty headers. You'll gain some savings in weight, but other than that, the stock headers do just as well. Now long tubes are where you'll get both weight and performance increases. 
Le Mans Master
Joined: Jun 2006
Posts: 5,642
Likes: 5
From: One day you're a Comet...the next day you're dust... Arkansas
Your real problem is those damn Flowmasters. Those are for teenies.
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
Le Mans Master
Joined: Jun 2006
Posts: 5,642
Likes: 5
From: One day you're a Comet...the next day you're dust... Arkansas
The stock LT1 exhaust is very good. The cat back by Corsa gets the best reviews for sound and performance. I don't know if you can buy just the mufflers. I put on Magnaflow dual outlet stock replacements on my L98 and really like them.