Has anyone had bolt on header glasspacks? - Chevelle Tech
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post #1 of 18 (permalink) Old Jul 4th, 18, 12:46 PM Thread Starter
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Troy
 
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Has anyone had bolt on header glasspacks?

In the 80's I had a 69 Chevelle with headers and bolt on header glasspack with no exhaust pipe after that...I forget how loud it was but from what I remember it wasn't too loud. Anyone have this on their car and how loud is it? On my current 69 Malibu I have right now, I might put headers on it with bolt on glasspacks just like I had back then...my car is being built as a 70's/80's style car like what we drove back then, Cragars, wide tires in rear, slightly raked in rear, stickers on 1/4 windows, might even do ladder bars.
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post #2 of 18 (permalink) Old Jul 4th, 18, 2:09 PM
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Lang
 
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Re: Has anyone had bolt on header glasspacks?

Yes.......They are Heavy as ****, and will damage your headers if left unsupported(ask me how I know this), and very loud in the car(ok if your 20 and think its cool). Been there and done that. Good idea only to get it to a Muffler Shop. Also any leaks into the car, and you will be smelling the exhaust(not to mention the Carbon Monoxide).

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post #3 of 18 (permalink) Old Jul 4th, 18, 2:19 PM
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charlie
 
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Re: Has anyone had bolt on header glasspacks?

have them on my 1972 Chevelle since the 1980 sound good to me ,they quieted up since I put the tail pipes on back in the 1990
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post #4 of 18 (permalink) Old Jul 4th, 18, 7:11 PM
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jeff
 
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Re: Has anyone had bolt on header glasspacks?

I have long glass packs and tail pipes they are very loud. I make about 375HP.
I got the perforated ones not the louvered.. perforated as in small holes drilled.

I actually saved a bunch on headers and glass packs from advanced auto. Look up the part and then look up 25% or 30% off discount codes.
Headers for my 57 chevy were %125 to my door and the glass packs cost me like 16 bucks each.
Just saying you may save a buck or more

My car went slower with headers and glass packs vs exhaust manifolds and turbo mufflers.
I had to rejet and got the power back and then some
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post #5 of 18 (permalink) Old Jul 4th, 18, 7:21 PM
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John
 
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Re: Has anyone had bolt on header glasspacks?

Had them on my Camaro.
Purple Hornies they were.
Loud as hell. Bolted right to the collector and had a small turndown at the end.
Too loud. drove me nuts driving on the highway for 20 minutes. After that I had to get out. The exited right before the rear tires/axle, so you could smell exhaust and if on a dirt road, they puffed up dust underneath the car.
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post #6 of 18 (permalink) Old Jul 5th, 18, 4:58 PM
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Steve
 
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Re: Has anyone had bolt on header glasspacks?

Quote:
Originally Posted by Arch Stanton View Post
Had them on my Camaro.
Purple Hornies they were.
Loud as hell. Bolted right to the collector and had a small turndown at the end
Me too, a set of Cherry Bombs. Freaking loud. I’ve only used them for initial start up and cam break-in. Then limping it to the muffler shop. As stated earlier, they are heavy to just be supported by the headers - IMO.

Back in the day I also had some on my 66 SS 396. 2 1/2” back to the rear end with turn downs.
Loud enough that I got a few fix-it tickets.
Replaced them with a set of Turbos, using same pipes.
While it ended the fix-it tickets, it also ended the 3rd gear posi marks that I enjoyed laying down.
Though I will say that the power loss I experienced probably wouldn’t have occurred if I’d have had the kind of mufflers that are available now.

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original paint, M20, & 3:31 posi.
Unrestored, but dreaming of doing so
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post #7 of 18 (permalink) Old Jul 5th, 18, 5:07 PM
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Jim
 
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Re: Has anyone had bolt on header glasspacks?

Just sold these. Nothing beats the sound when you get on it. After that its tough to listen to for the rest of the ride.
There is so little "muffling" in them a straight pipe would only be a little louder.
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post #8 of 18 (permalink) Old Jul 5th, 18, 6:10 PM
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Jeff
 
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Re: Has anyone had bolt on header glasspacks?

Yep had them in the seventy's and my ears are ringing right now as I type... Dynomax Super Turbo 17749 is your friend......
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post #9 of 18 (permalink) Old Jul 5th, 18, 6:33 PM
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Bob
 
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Re: Has anyone had bolt on header glasspacks?

73-76 on my 69 convertible 327 Thrush bolted right to header then short pipe with 45 degree in front of year tire . Those and blue walker swinger round glass packs like them red ones pictured above . Neighbours hated them and that was country living
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post #10 of 18 (permalink) Old Jul 5th, 18, 7:53 PM
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John
 
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Re: Has anyone had bolt on header glasspacks?

Quote:
Originally Posted by 67 SuperSport View Post
Just sold these. Nothing beats the sound when you get on it. After that its tough to listen to for the rest of the ride.
There is so little "muffling" in them a straight pipe would only be a little louder.
Wow! really old school !
Flanges drilled for 3 bolts! Ha! Just like A broke high school kid!. Made me smile!
My Purple Hornies were 3 bolt with a turndown at the end. 3 inch. Can look straight through them and see straight to the turndown. My ears are ringing just looking at them. Ha!
They did sound good when you punched it, but I say again, after 5 minutes, you'll want to hear the radio, or talk to whomever is next to you, or hear your own thoughts..... or...….
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post #11 of 18 (permalink) Old Jul 5th, 18, 10:02 PM
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Re: Has anyone had bolt on header glasspacks?

I have the Purple Hornies on my street LUV truck now, just to get it in and out of the shop. When I get around to painting the truck, I plan on side pipes...
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post #12 of 18 (permalink) Old Jul 6th, 18, 6:31 AM
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Initially had a set of purple hornies on my s10 to clear the stock fuel tank, obnoxious! 10.25:1 385 EQ220'S and 288R Crower cam. Thrush welded turbos now

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post #13 of 18 (permalink) Old Jul 6th, 18, 7:32 AM
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Pugsy
 
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Re: Has anyone had bolt on header glasspacks?

Love the glass packs.


These have full 2-1/2" pipes off manifolds but not too loud at all. Just a nice rumble, unlike the Borla fart can sound that seems so popular with the young crowd.


But, ya dumping right under your butt will be loud for sure. Use the longest size you can find.



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post #14 of 18 (permalink) Old Jul 6th, 18, 7:42 AM
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Rick
 
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Re: Has anyone had bolt on header glasspacks?

Cragar Hot Pipes back in high school in a 70 Nova. Really loud. Harsh loud, not pleasant at all.

But an "inadequate silencers" ticket from Officer Carter forced me to add tail pipes from just under the front seat to the back bumper and things got a lot quieter. Looking back on it now, he did me a favor.


Rick

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post #15 of 18 (permalink) Old Jul 6th, 18, 8:13 AM
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Mike
 
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Re: Has anyone had bolt on header glasspacks?

a friend of mine had them on his 400 trans am. They were freaking obnoxious...
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