Evette76

I have the hooker header side mount header side pipes on my 76 and I have been battling trying to get them quieter! Since I've had them I had the STS spiral baffles in them and decided I wanted to quiet the car down since you can't even here yourself think in it especially on the highway! So I did classic chambered baffles a year ago thinking it would be quieter talking to a guy who had them here on the net. Turns out they're just as loud. They sound way better then the spirals but just as loud. I am looking for something that will still flow decent and sound nice but not nearly as loud. Any thoughts? Or maybe ideas on quieting down what I have now? The engine is your typical built 355 aluminum heads and intake with a voodoo cam.

LT1M21Vette

Subtle and quiet are not words I'd associate when I think about side pipes.

Bigeddie

if your trying to offload that loud std baffle for the low let me know, i thought sweet thunder inserts were quieter until you punched it(so i have heard). i am running open pipes but its only a stock low compression motor so its not too loud or at least thats what i tell myself.

jgcable

I have hooker side headers and side pipes on my 77. I am running the glass packs and to my ears.. they aren't loud.

keithinspace

If you aren't upset about losing a little bit of power, I'd consider running Reverse Flows if you really want to quiet it down. I'm not sure how much of a hit you would take, but it would certainly quiet things down a bit.

If you wanted a little more edge, the next step would probably be the simple Hooker Glass Pack inserts. Not the "Max Flow" inserts...just the basic deal.

Beyond that, the ONLY other thought I'd have is to try the STS system again and stuff some rough steel wool in with the baffles. I haven't tried it before, but it would stand to reason that the addition would 'muffle' the sound a bit more. May be a bad thought, but I figured I'd toss it out there.

Keith

MelWff

the reverse flows are great if you want quiet but they are a real drain performance wise. I went from them to STS baffles and I couldnt believe the difference in seat of the pants power, very very noticeable. I also found the STS to be too loud for my taste and went to Sweet Thunder 2". They are not as bad, have a deeper bass sound, but at cruising speeds of 3,500 rpm they are still pretty loud.

OldCarBum

I built and rode high performance Harley Davidsons for years. There were two ways to easily quiet the exhaust. One trick I used was to weld a steel washer onto a metal standoff, and then weld the standoff onto the metal baffle, about an inch from the trailing edge of the baffle, so the washer was standing upright and the center of the washer was centered in the baffle. My baffles were approximately 2" id and I used a 3/8" narrow flange washer (one that would just cover the flange of an allen bolt, not a fender washer). We did it for performance reasons, but by adding the washer to the baffle we found that it drastically reduced the decibel levels coming from the exhaust system. Give it a try. Another trick was to simply wrap the metal baffle with fiberglass insulation. This works great as well. Have fun.

Alwyn678

Give them to me

Convertible may help with the wind noise interference

Evette76

Thanks for the idea with the washer! I did some research on google and guys are calling it the lollipop exhaust baffle. Google image search that and see if that is the same thing you are talking about. I just wanted to have a picture for a reference. I really want to give this a try because I like how the baffles I have now sound, but they're just too loud.

widowmaker221

No welder is needed for this. Just drill one hole near end of sidepipe and install a thumbsrew using two locking nuts for the same effect!!

vstol

I currently have sweet thunder on myLS3 427 and I like it. I have the 2.5 inch flow through but you can get other sizes and they are made very well. t

7t9l82

I have sweet thunder 2.5" and they are loud I've thought of wrapping them with steel wool and drilling some holes to let the gasses take a path through the steel wool BUT, I don't think I'm going to do it because they sound so much better than the local cobra kit guys car it isn't even funny.

cv67

Side pipes being quiet enoguh to talk?

Maybe consider an undercar exhaust hard to have your cake and eat it too

7t9l82

Yep its silly when you think about it. If you can't deal with the noise don't have the exhaust exit a foot from your ear

Evette76

Thumbscrew? pics? Size?

Evette76

Thumbscrew? Pics of what your talking about? Size?

Sayfoo

Please let us know what you do and if it works

Knerf

these are dougs with maxflows on a 383, i think they are too quiet

cottoneg

Wow, mine were MUCH louder

KWIL

Something like this: