Hey all..what would sound deeper and more aggressive on a 454 chevelle...Flowmaster 40's or any kind of Borla mufflers? Everyone keeps talkin me outta Flows and into Borlas for a more aggressive tone...I want that deep sound that you can feel in your chest when it drives by( serisouly...on the border of illegal....lol...whats the best??)

I have heard a lot of people saying good things about the Dynomax Super Turbos.

Borlas will give a similar sound to the Dynomax ST. I had them on a previous 69 SS396, and will put them on my current ride as well. I don't find the Borla price out of line, as the Dynomax Ultra Flo are about the same.

The Dynomax ST would certainly be cheaper than Borla or FM.

if I threw the Dynomax on the 350...any deeper/louder than 40 flows??

I've ran both, from Top 10 Shootout Flowmasters to the XR-1's. The Flowmasters depending on motor size sound raspy and tinish. The XR-1's have the deep pulsation of sound I think your looking for. I do like the DynoMax race magnums as well and for the price in a 3" you can't go wrong. Your neighbors will love ya :D

WALKER ULTRAFLOWS for performance (substance).

BORLA for a FLOWMASTER-type effect ("style").


The choice is: substance or style?

Sound (noise) is not indicative of power. Sorta reminiscent of putting balloons on your bicycle spokes.


BUT: Like me ol' Pappy always said:
"You pays your money...you makes the choice."

Balloons in bicycle spokes :confused: we used to use playing cards or those 1000.00 baseball cards :(

arent flowmasters required on Mustangs? :D I don't like the sound.

Gotta try the Pypes system also. They have sound clips on their site and a couple of their mufflers sound like just what you are looking for.

www.pypesexhaust.com

I personally don't like Flowmasters. It makes your car sound like its gargling.

I personally don't like Flowmasters. It makes your car sound like its gargling.
I have 3 chamber flowmasters on my car with a built 454 and it doesn't gurgle. It roars.

Spintech! I just got my new exhaust installed with spintech mufflers, it's pretty awsome. it's a unique sound though, nothing like Flows or Borla or Dynomax. The best thing about them is the lack of resonance in the car. Outside the car they have kind of a husky, really 'angry' sound, nothing mellow about them.
I wouldn't buy any brand where they can't produce flow numbers for the mufflers. I believe the general rule is 2.2cfm per horsepower total. If you have dual exhaust you divide that by 2 to get the optimum flow rate you need for each muffler. Flowmaster tech support tried to tell me that due to the design they couldn't put their mufflers on a flow bench. yeah, right.
Spintechs are made to order and are very well constructed.

I'm droping my car off Friday to have a 3 1/2" Dr Gas X pipe with 3 1/2" Spintechs installed. I can't wait to hear it!

I have an x-pipe and 40's series flows on my car. The muffler dumps out before the axle and I think its sounds awesome. My car is pretty mild with a basically stock 350 with a manifold, carb and headers added. Can't wait to here what it sounds like when I get my 383 stroker with a noticable cam.

I'm droping my car off Friday to have a 3 1/2" Dr Gas X pipe with 3 1/2" Spintechs installed. I can't wait to hear it!

3 1/2!?!! that's out of control! :) It will be extremely loud.

Mine is 2 1/2" with an H-pipe, exiting in front of the tires. I set off car alarms rumbling through the work parking lot :)

Yup, I'm going to run dumps too. My Velle is more strip than street and the local law is really pretty lenient.