Glasspacks anyone?
03-11-2018, 12:25 PM
#21
Burning Brakes
Thread Starter
Sorry to hear that Bruze.
03-11-2018, 12:37 PM
#23
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03-11-2018, 12:55 PM
#24
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When I first saw the thread title I thought it was gonna be about pictures or old videos going back 50 years in time, to some old hotrods (Corvettes?) that had glasspacks.
TBH, I didn't even think they still made glasspacks, what with all the catalytic converters, sensors, yadda yadda all over the exhaust system and into the computer system.
TBH, I didn't even think they still made glasspacks, what with all the catalytic converters, sensors, yadda yadda all over the exhaust system and into the computer system.
03-11-2018, 01:22 PM
#25
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03-11-2018, 01:24 PM
#26
Burning Brakes
Thread Starter
Not really. I guess I should have known. Kinda sad.
Anyway, I was watching "American Pickers" on TV and a car they were looking at had glasspacks. I had heard the term before, but wasn't really sure what exactly they were. Did some online research and found that they can be an inexpensive, fast and easily reversible way to experiment with exhaust sound. I even found some videos of people who had installed them on their C6. I thought I would try to get more info from the members here. That was obviously a poor choice on my part. Oh well...live and learn.
03-11-2018, 01:39 PM
#27
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I had glasspacks on my first car, a '61 Corvair. They were from J.C. Whitney and I believe the total cost was about $9.95. (I worked part-time for a farmer for 75¢ per hour, earning $15-18 per week, cash, depending on how many hours I worked. So the ten bucks for the exhaust, plus shipping, pretty much wiped out one week's pay 
).
Being a rear engine, flat-6, the entire DUAL (vs. stock single) exhaust system had only two parts: a short pipe with muffler, one assembly per side. The placebo effect on horsepower gains was amazing. I'm sure it gained 20-30 HP.
Fifty-one years ago:
).Being a rear engine, flat-6, the entire DUAL (vs. stock single) exhaust system had only two parts: a short pipe with muffler, one assembly per side. The placebo effect on horsepower gains was amazing. I'm sure it gained 20-30 HP.
Fifty-one years ago:
Last edited by Bruze; 03-11-2018 at 01:42 PM.
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Randy_in_MD (03-11-2018)
03-11-2018, 01:46 PM
#29
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03-11-2018, 01:51 PM
#30
Burning Brakes
Thread Starter
I get it guys. No offense taken. It's all in good fun.
I actually thought the videos I saw with Cherry Bomb glasspacks installed on a C6 sounded pretty good. Maybe my ear for exhaust sound is as bad as my palette for fine wine (I always have liked Boones Farm).
I actually thought the videos I saw with Cherry Bomb glasspacks installed on a C6 sounded pretty good. Maybe my ear for exhaust sound is as bad as my palette for fine wine (I always have liked Boones Farm).
03-11-2018, 01:53 PM
#31
Race Director
I had a set of 36" glasspacks on my 1st car, which was a 1972 Mustang with a 302. It sounded great; they provided a very deep, not-too-loud sound with no drone.
There is another choice besides glasspack to consider - a company called Classic Chambered. I considered trying one on my Avalanche but ultimately did not.
I like the idea of picking up a cheap midpipe and trying them out, if I was so inclined to give it a try. I am perfectly happy since I converted to a stock NPP system.
There is another choice besides glasspack to consider - a company called Classic Chambered. I considered trying one on my Avalanche but ultimately did not.
I like the idea of picking up a cheap midpipe and trying them out, if I was so inclined to give it a try. I am perfectly happy since I converted to a stock NPP system.
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Randy_in_MD (03-11-2018)
03-11-2018, 02:13 PM
#32
Well, I had glass pack exhaust systems back in the 1970s.
They use to "burn out" farily quickly and get louder over time.
I am sure they moaned and droned, yet I don't recall specifics.
I imagine he OP is considering removing the OEM mufflers and then installing straight glass packs into this location. Plus perhaps working with a budget.
I am swayed to recommend to look toward some other mufflers (Borla, Billy Boat and all the names) that are race track products.
No mention of whether the OP car already has Long Tubes, Cats, X pipe, NPP variable mufflers.
FWIW I would not do glass packs and instead install header first with what ever mufflers are currently on the car and then evaluate tone/ sound.
Best of luck in your decision.
They use to "burn out" farily quickly and get louder over time.
I am sure they moaned and droned, yet I don't recall specifics.
I imagine he OP is considering removing the OEM mufflers and then installing straight glass packs into this location. Plus perhaps working with a budget.
I am swayed to recommend to look toward some other mufflers (Borla, Billy Boat and all the names) that are race track products.
No mention of whether the OP car already has Long Tubes, Cats, X pipe, NPP variable mufflers.
FWIW I would not do glass packs and instead install header first with what ever mufflers are currently on the car and then evaluate tone/ sound.
Best of luck in your decision.
Exhausts sound VERY different depending on if you have shorties, longtubes, cats, x-pipe, h-pipe, a cam, etc. Also, there are different types of glasspack/bullet mufflers as well. There are old school louvered glasspacks like the old days, which effectively reduce the exh diameter and quiet down a bit, and there are modern perforated core bullets which are straight through and cut a bit of drone and change the tone, but do not do much for the actual sound level of the exhaust.
On a bone stock car with nothing else done, just replacing the mufflers with test pipes will sound great since it is basically an "always on" NPP. Bullets instead of test pipes will take a bit of the higher RPM bark out of that setup, but won't make a huge difference in the grand scheme of things.
Once you add longtubes or remove the cats though, it will sound terrible like that...very loud and TONS of drone. If you plan on future mods, especially if you live in a no-emissions state and don't mind removing cats, a proper exhaust system is the way to go unless you enjoy tons of highway drone and not being able to have a conversation in your car.
The real answer to this questions is, what are your current mods, and what do you plan for the future?
Last edited by PuckDracon; 03-11-2018 at 02:21 PM. Reason: spelling
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Randy_in_MD (03-11-2018)
03-11-2018, 04:47 PM
#33
Burning Brakes
I had glasspacks on my first car, a '61 Corvair. They were from J.C. Whitney and I believe the total cost was about $9.95. (I worked part-time for a farmer for 75¢ per hour, earning $15-18 per week, cash, depending on how many hours I worked. So the ten bucks for the exhaust, plus shipping, pretty much wiped out one week's pay ).
Being a rear engine, flat-6, the entire DUAL (vs. stock single) exhaust system had only two parts: a short pipe with muffler, one assembly per side. The placebo effect on horsepower gains was amazing. I'm sure it gained 20-30 HP.
Fifty-one years ago:
).Being a rear engine, flat-6, the entire DUAL (vs. stock single) exhaust system had only two parts: a short pipe with muffler, one assembly per side. The placebo effect on horsepower gains was amazing. I'm sure it gained 20-30 HP.
Fifty-one years ago:
In 1968 I bought a brand new Camaro, red, 327. Put glass packs on it. People would stop me all the time wanting to know about the sound. It kept up with Z28s. Met my wife in it. Loved that car. Still love that wife.
Craig
03-11-2018, 05:41 PM
#34
And if mem serves the more silent Thrush were called "Hush Thrush", and not "Thrush Hush"....
03-11-2018, 05:52 PM
#35
Alternative to Cherry bombs.....
I had cherry Bombs on my '69 Camaro when I was in high school (late 1970's), but got tired of the noise, and it just didn't sound crisp when you hit the throttle, so I put on Turbo mufflers. Sounded awesome !!! To this day, have not heard a sweeter combination of fairly quiet when your going slower, but when you punched it, it just had a great clean , sharp sound. They were shorter than a stock muffler, but still oval when you look at it from the end.
Hope this helps.
Hope this helps.
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Randy_in_MD (03-11-2018)
03-11-2018, 06:19 PM
#36
I had a set of 36" glasspacks on my 1st car, which was a 1972 Mustang with a 302. It sounded great; they provided a very deep, not-too-loud sound with no drone.
There is another choice besides glasspack to consider - a company called Classic Chambered. I considered trying one on my Avalanche but ultimately did not.
I like the idea of picking up a cheap midpipe and trying them out, if I was so inclined to give it a try. I am perfectly happy since I converted to a stock NPP system.
There is another choice besides glasspack to consider - a company called Classic Chambered. I considered trying one on my Avalanche but ultimately did not.
I like the idea of picking up a cheap midpipe and trying them out, if I was so inclined to give it a try. I am perfectly happy since I converted to a stock NPP system.
Last edited by roboticjunky; 03-11-2018 at 06:19 PM.
03-11-2018, 06:47 PM
#37
Melting Slicks
I knew a guy that put a pair on his motorcycle.
Sounded good and much, much cheaper than slip-ons. Not saying his bike looked so good. Classic Italian sportbike with Cherry Bombs.
Sounded good and much, much cheaper than slip-ons. Not saying his bike looked so good. Classic Italian sportbike with Cherry Bombs.
03-11-2018, 10:27 PM
#38
Le Mans Master
https://www.corvetteforum.com/forums...ffler-mod.html
Go to post #7, and read from there on. A stock muffler mod which does not look too difficult to do, and which those who have done it are quite happy.
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Randy_in_MD (03-12-2018)
03-12-2018, 12:08 AM
#39
Le Mans Master
The cherry bombs i had on my 51 jeep wagon with a 283 vette engine in the late 60ths were about 14" long (I ThinK) and was round and red in color and everyone liked the sound.....I don't think they make them anymore.
03-12-2018, 12:37 AM
#40
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Randy_in_MD (03-12-2018)