I'd like to install some high-flow mufflers that have a little more rumble than stock, but not loud. Any recommendations?

 

Alot of folks speak highly of the Dynomax mufflers by Walker. I have Thrush glasspacks on my 71 98 and they are quite loud.

You should consider taking your Olds to a local exhaust shop. The owner can give you advice and may have a "house brand" turbo muffler that sounds good and will save you some money.

 

Go to the Walker Dynomax website. They have sound clips of each of their mufflers.

 

Magnaflow WITH the fiberglass packing. It's a straight through perforated design but has fiberglass packing surrounding the perforated tube through the muffler. No drone.

 

Another vote for Dynomax.

I have used the Magnaflow on my 62, mainly because it fit better in that specific application. I was less than thrilled with the sound quality. At first it was loud and agricultural sounding. Over time, the sound got quieter. I attribute this to either my failing hearing or (hopefully) the fact that the fiberglass packing is getting loaded with carbon soot and thus becoming more sound absorptive.

I don't believe that the Dynomax have packing. I've always been happy with the sound quality and volume in numerous applications over the years.

 

My guess is Walker Dynomax (Long Case) will make you happy.

 

This!

 

Thanks for the info. Looks like a solid case for the Dynomax.

 

Dynomax turbo mufflers

 

Have Some Dyanamax super Turbo's, like em