Recommend a muffler for 1986 Chevrolet K20 350SBC

[c502cid]

I used this system on my square body plow truck. It fit really well, only used for one season though.

Thrush Turbo Header Back Dual Exhaust Systems 89024​

 

[TheLastWord]

Decided to try a pair of these Dynomax after listening to so many exhaust videos on youtube that my head is spinning. We'll see how they sound and how long they last.

It is a proven design, very popular with mild mods and car clubs of all makes, etc.

I first installed on 74 Pontiac 455 wagon, duals, 30+ years ago, last year before cats. And others since then including 350 SBC. Surprised the price has not changed much. Free shipping and warranty.

Let us know how they work out.

 

[slacktide_bitog]

Decided to try a pair of these Dynomax after listening to so many exhaust videos on youtube that my head is spinning. We'll see how they sound and how long they last.

Drill a hole at the bottom of the muffler, if it doesn't already have a hole. Some mufflers come pre-drilled, including the last Walker I used (a SoundFX).

The hole doesn't have to be that big, maybe 1/8 of an inch or a few mm is all you need

Here is an example:

 

[4WD]

Walker Quiet Flow SS if you don't want loud. Flowmaster, Thrush, Dynomax, Magnaflow, all of those will be louder than stock. Don't buy the cheap Amazon junk, you WILL be replacing it in a year. The Quiet Flow lasted a few winters for me on my Jeeps where the Amazon mufflers and Flowmasters lasted one before rusting out.

I used to buy the WQF made for the 454’s - but use them with SBC’s.
Muffler guy welded it all anyway … Nice/light tone at throttle …

 

[DuckRyder]

Super Turbos are good mufflers. Should have reasonable sound levels.

DynoMax is the performance side of Walker.

 

[Creekside]

Super Turbos are good mufflers. Should have reasonable sound levels.

DynoMax is the performance side of Walker.

I didn't know that. Thanks for the info

 

[Creekside]

I put the Dynomax 17749 on yesterday morning and I’m super happy with them. Slight rumble at idle and you can’t hardly hear it running on the highway.