Thrush Tin Can muffler info?

[JRC99]

Did they ever come in 2.5 inch inlet/outlet? I'd love to find a pair, but they rarely come up for sale, and never in that size. They'd be for the Camaro. I don't want to go bigger on the exhaust, and I'm definitely not reducing it. I figure this can also serve as a general discussion thread for these. Also, I'm aware of the Cherry Bomb Hot Rod mufflers. They don't come in 2.5 unfortunately.

[67 Nova Boy]

Does this help any? Ask if you need any info

Dave
67 Nova Boy


https://photos.app.goo.gl/Tu9hjpx5JbUnfWqR7

https://photos.app.goo.gl/ypJmDhPdxih8TWak6

https://photos.app.goo.gl/eto4PZuHyFDDVXXc8

https://photos.app.goo.gl/jfhWKpiYsnaALkbj6

https://photos.app.goo.gl/JEiRchBnpwF8XPKm6

https://photos.app.goo.gl/5ACz8vARLkt1b8uJA

https://photos.app.goo.gl/yL9SiPM6biBGq2ud8

[JRC99]

Interesting. I see one with a 2 1/2 inlet but a 2 1/4 inch outlet, and that's as big as they got . That's a bit of a bummer. Thanks.

[JRC99]

I wonder if they made them in bigger sizes later on? I don't know when they quit producing them but I'd imagine they had to have made them larger eventually, as exhaust systems got bigger.

OR WAIT. Am I reading it wrong? I didn't take OD vs ID into account. Looks like I'm measuring tail pipes tomorrow. I know I'm wrong about *something* here.

Hell, just ignore my rambling lol

[cheveslakr]

I've got a single 2.5", not positive it isn't od in and id out......it's up in the attic and can't check right now. I've been searching for a mate for it for maybe 3 years????

[JoeC]

I have a set that are 2 1/4 on one end and 2 3/4 on the other and 35 inches long overall

[Burd]

I have a Gratiot Auto Supply catalog but I can’t find it at the moment. I had this on a winter beater. I kept the ad. Not what your looking for but it’s Thrush

[JRC99]

Alright, measured the pipes on the car. 2.25" ID, 2.5" OD

[8secchevelle]

I bought a set of 2 1/2 in 2 1/2 out in 1985 from a local shop , he had them in stock I used them till late 86 and had to replace them after going through a state police road block and receiving a ticket for being too loud 😳. We had several cars in town with them the best sounding one was a 340 duster with w2 heads and .590 solid lifter cam it sounded like it was gonna blow the mufflers off😀

[SMGCO]

Btw, don't waste your money on current day Hush Thrush mufflers. They are now made by Dyno Max, sound totally different from the original Hush Thrush and are also restrictive !

[JRC99]

Btw, don't waste your money on current day Hush Thrush mufflers. They are now made by Dyno Max, sound totally different from the original Hush Thrush and are also restrictive !

Wasn't planning on it! I want the old school round ones.

[PeteLeathersac]

'

Here's a couple links to some old style round ones currently for sale on Kijiji Canada.
First one's used also stamped 3154, is there a # on the one you have?
Second link is an NOS pair of 4243's w/ # listing on box end as pic below but 3154 not listed?:hmmm:
~ Pete

https://www.kijiji.ca/v-other-auto-parts-and-accessories/winnipeg/thrush-muffler-rat-rod/1445312066

https://www.kijiji.ca/v-engines-and-engine-parts/ottawa/new-old-stock-vintage-thrush-mufflers/1266852181

.

[JRC99]

I now have my answer for certain. Hot Rod's October 1973 muffler test lists a 2.5 inch diameter round Thrush muffler. Now if only I could find a pair for sale that I can afford....

https://i.imgur.com/BvQyPBm.jpg