sweet thunder exhaust
Postmaster
Joined: Oct 2009
Posts: 3,432
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They are basically high quality versions of glasspacks. They seem to be engineered towards the loud side, but I don't find anything spectacular about them.
They use louvers inside to catch and redirect the exhaust flow. When glasspacks and similar designs have been tested, they were found to have lower CFM ratings than other mufflers of similar size. Expect these to be on the low end of the performance scale. Basically, they have a bark, but not much bite. Save your money and buy some glasspacks.
They use louvers inside to catch and redirect the exhaust flow. When glasspacks and similar designs have been tested, they were found to have lower CFM ratings than other mufflers of similar size. Expect these to be on the low end of the performance scale. Basically, they have a bark, but not much bite. Save your money and buy some glasspacks.
Posting Guru
Joined: May 2004
Posts: 2,161
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From: Prince George, B.C.
They have no packing, and pretty much hold true to the design used in the late 60s and the 70s on GM Muscle cars, only now as choked down. (original had a louvered 1-7/8" flow tube through them)
Classic Chambered is another to look at.
Classic Chambered Exhaust Inc. - Home Page
Classic Chambered is another to look at.
Classic Chambered Exhaust Inc. - Home Page
Postmaster
Joined: Oct 2009
Posts: 3,432
Likes: 7
Agreed there, if you want a glass pack type muffler, go for a cheaper one, these sweet thunders are about the same thing as a glass pack that has blown the packing out already. Save your money and get a glasspack.
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