You could also do it Laguna Seca style. Put an elbow on the back that you can change the direction of. Figure out which side the sound meter is on and point the exhaust up and away from it.
Quietest muffler for V8 Z?
Posted 01 March 2017 - 01:36 PM
I don't have a shot while on the rack, but this may help. I copied a friend's car that has an old school SBC with the same piping & muffler and it sounded good, as well. Not the prettiest, but functional and didn't cost me a fortune.
Do you happen to have any pics of the underside of the car with this exhaust installed?
Gary Savage - http://www.Savage42.com
Posted 01 March 2017 - 04:26 PM
It's going to end up with how much HP are you willing to trade off for being quiet.
When I decided on the layout for my car, after digging it seemed that glass-pack type mufflers were the best balance of performance vs sound reduction.
I read through a bunch of Vizard and other's stuff. Actual testing across manufacturers on the same setup is shockingly difficult to find. Half the articles about mufflers cite professionals from one company or another who always insist their own design is best.
I did find this post when I was looking: http://www.bangshift...ffler-test-info
I ended up with a pair of these https://www.summitra...arts/sum-633222 tucked up next to each other where the stock muffler should be. I don't think what I did will fit with the stock bumper shocks.
I have this video, but, I have no idea how much normalization my phone does by default for sound being recorded. It is noticeably quieter when the car is actually on the ground. And probably because you're then much higher than the exhaust compared to where my phone recorded this from.
Posted 02 March 2017 - 06:57 PM
Check out Walker mufflers, there far too quiet for my tastes lol
Best mufflers I have ever owned are T66 turbonetics turbo's
Edited by Ryan Merrill, 02 March 2017 - 07:01 PM.
Posted 04 March 2017 - 11:40 AM
Here is my 77 280 with 2 1/4 in back to the diff then 2 1/2 to chambered muffler. I do not have carpet just two rubber mats. I have to roll down my windows to here exhaust, and I have 60,000 miles on the muffler it was put on in 2014 I had a turbo muffler before that.
Edited by 720fast, 23 March 2017 - 02:19 PM.
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