I wanted to go fishing and find out if anyone had any experience with these "muffler" things:

http://www.speedwaymotors.com/eccStoreFront/product_images/900-949%202ND/910-13984_L.jpg

I am considering using these as secondary mufflers back in the tailpipe on my El Camino. The full 3" dual system with H crossover and 22" long Hooker Aerochambers is just a bit louder than I was shooting for (BB, 11.5:1 compression, HR cam, headers). So I am looking at something simple that I can add into the back end. This is one alternative, another is adding an 2.5" x 18" glasspack into each tailpipe. I already have the glasspacks but that requires cutting and welding, and these appear to just slide right in.

Good idea? Horrible idea? Just turn the tunes up louder :cool:

You know the old saying. If its too loud, Your too old.

I've never seen those. A friend of mine had a Pro-Street Camaro with the headers exiting behind the front wheels. He cut the outer housing off of a set of chambered muff's. It left him with just the mesh inserts that he slid into the ends of the headers and secured with a set screw. Cut the exhaust noise by about 30% and didn't effect his ET's at all.

Keep it loud! Give them back to this guy! He hasn't been able to finish his fence ever since... http://www.vintageprojects.com/tractors/postholeaugerpic%20copy.jpg

I have those in the tailpipes of my el camino. Sadly, it is nowhere near running yet, so I can't report on how they work. The Moroso version supposedly reduces the sound by 6-9 decibels, so it can't hurt to try. As for the noise, to each his own. I will be autoxing my car and we have sound rules so I need my car to be as quiet as possible (below 96 db).

I will be installing Pypes Race Pros (basic oval case straight thru design muffs). I have considered installing a set of chambered pipes in front of the muffs.

Had a set of mufflers similar to those; installed in the 3" collectors of my boat's headers.

WAY TOO LOUD. 'Course, those were the ONLY mufflers on the boat. They were better than NOT having the augers installed--but no treat to be anywhere near.

Happily ripped those headers off; installed shorties with a Flowmaster "transverse" dual inlet--dual outlet 80 series. MUCH improved!

I'm guessing they would add considerable back pressure. I had a boat with a Mercruiser 260 (350 Chevy) IO. I wanted a thru-hull exhaust and installed one with capped off orig thru-prop exhaust. Well it was loud and sounded like crap IMO at idle, kind of like an open car exhaust direct from exh manifolds. It did increase the top speed by about 3 mph though. I bought some bronze spiral inserts that went in the hoses to the thru-hull fittings. They quieted it down some but it lost the 3 mph gain.