Do I have stock mufflers?
Thread Starter
Advanced
Joined: Aug 2010
Posts: 57
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From: Reading PA
Do I have stock mufflers?
Hi I am a new member and new owner of a '77 L82. This is also my first vette. The previous owner put true dual exhausts on the car but claimed to use the stock mufflers. The car has a nice sound, but not what I'm looking for...I want a deep 'muscle car' rumble (no fart cans!) and was looking at dynomax super turbo's or magnaflows. Nothing too loud as I like my neighbors and want it to stay that way.
However, I am not sure I actually have stock mufflers and I dont want to waste my money to get something less aggressive. There is not any branding or labeling on the mufflers, the right rear has 'HOM2286' stamped on it. Both mufflers are 16" long, 9" wide, 7" high in an oval shape (these are outside dimensions)....Does this sound like the size of a '77 stock muffler???
Could these be a generic auto shop brand? The tubing coming in seems to be 2 1/4" OD, I guess thats 2" ID? I don't know if its a straight through design, both inlet and outlet are offset, not centered.
I can take a few pics, they are nothing special, no stainless, no chrome, just look like run-of-the-mill mufflers. Hope that wasn't too confusing; any suggestions, pointers, information are appreciated. I am looking for a starting point.
However, I am not sure I actually have stock mufflers and I dont want to waste my money to get something less aggressive. There is not any branding or labeling on the mufflers, the right rear has 'HOM2286' stamped on it. Both mufflers are 16" long, 9" wide, 7" high in an oval shape (these are outside dimensions)....Does this sound like the size of a '77 stock muffler???
Could these be a generic auto shop brand? The tubing coming in seems to be 2 1/4" OD, I guess thats 2" ID? I don't know if its a straight through design, both inlet and outlet are offset, not centered.
I can take a few pics, they are nothing special, no stainless, no chrome, just look like run-of-the-mill mufflers. Hope that wasn't too confusing; any suggestions, pointers, information are appreciated. I am looking for a starting point.
Melting Slicks
Joined: Mar 2009
Posts: 3,126
Likes: 15
Those dimensions are the approx. size of what I have on my car now. Exhaust is a Volunteer Vette 2 1/2 in. true duals system installed this year. Previous mufflers were small turbos and they were several inches shorter. Some of the guys are going with the chambered systems or high end systems with big name brand mufflers. My car is stock L82 and I did not want to go with a loud system. I am old however. Good luck. mike...
Last edited by mds3013; Aug 19, 2010 at 09:07 PM.
Le Mans Master
Joined: Jul 2000
Posts: 6,664
Likes: 162
From: columbia city in
does it matter what you have ?you want to replace them anyway.flowmaster, magna flow all the major brands have what you want.some muffler companys have sound clips on there web sites.
Drifting
Joined: May 2006
Posts: 1,480
Likes: 2
From: Circleville Ohio
Vader Vette
Hi I am a new member and new owner of a '77 L82. This is also my first vette. The previous owner put true dual exhausts on the car but claimed to use the stock mufflers. The car has a nice sound, but not what I'm looking for...I want a deep 'muscle car' rumble (no fart cans!) and was looking at dynomax super turbo's or magnaflows. Nothing too loud as I like my neighbors and want it to stay that way.
However, I am not sure I actually have stock mufflers and I dont want to waste my money to get something less aggressive. There is not any branding or labeling on the mufflers, the right rear has 'HOM2286' stamped on it. Both mufflers are 16" long, 9" wide, 7" high in an oval shape (these are outside dimensions)....Does this sound like the size of a '77 stock muffler???
Could these be a generic auto shop brand? The tubing coming in seems to be 2 1/4" OD, I guess thats 2" ID? I don't know if its a straight through design, both inlet and outlet are offset, not centered.
I can take a few pics, they are nothing special, no stainless, no chrome, just look like run-of-the-mill mufflers. Hope that wasn't too confusing; any suggestions, pointers, information are appreciated. I am looking for a starting point.
However, I am not sure I actually have stock mufflers and I dont want to waste my money to get something less aggressive. There is not any branding or labeling on the mufflers, the right rear has 'HOM2286' stamped on it. Both mufflers are 16" long, 9" wide, 7" high in an oval shape (these are outside dimensions)....Does this sound like the size of a '77 stock muffler???
Could these be a generic auto shop brand? The tubing coming in seems to be 2 1/4" OD, I guess thats 2" ID? I don't know if its a straight through design, both inlet and outlet are offset, not centered.
I can take a few pics, they are nothing special, no stainless, no chrome, just look like run-of-the-mill mufflers. Hope that wasn't too confusing; any suggestions, pointers, information are appreciated. I am looking for a starting point.
Magna flows .Either way they will sound way better than stock.
Thread Starter
Advanced
Joined: Aug 2010
Posts: 57
Likes: 0
From: Reading PA
For instance the Dynomax Super turbos are said to be a good choice, but only "a little" louder than stock. I dont want to move backwards and replace these mystery mufflers with a Dynomax model that is actually quieter.
If these do seem like stock, then I have a better baseline for what to put on. Im not even sure, what was stock exhaust pipe size ? 2 inch ? when people say they have a 2 1/2 inch exhaust, is that the pipe ID ? or OD .... guess I could use a crash course on Exhaust measurements
Magnaflow keeps coming up do they all mostly sound the same ? I see Advanced Auto has a ton of different models, is the only difference inlet size and position, or do magnaflows have different sounding models as well ?
Sorry for the dumb questions
Safety Car
Joined: Sep 2005
Posts: 4,063
Likes: 104
From: Southeast, Tennessee
St. Jude Donor '09 thru '26
i decided to be a bit more aggressive, and am running striaght pipes all the way back, with no mufflers that exit through monza "tips" that have resonators only built into them. they exit our the rear with dual tips on each side. if i remember correctly, i bought them from midamerica.
