The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 08-09-2016, 08:49 PM   #1
Smokintire70
Registered User
 
Join Date: Jul 2016
Location: Santa Rosa California
Posts: 52
GLASSPACKS-Who manufactures the best one?

I really love the sound of a glasspack. Although people have told me that they are all crappy. I somehow don't believe they are all terrible. I need help finding out which one I should purchase. Money is no issue- they are glasspacks.

Thanks everyone. Feel free to start a poll.
Smokintire70 is offline   Reply With Quote
Old 08-09-2016, 09:35 PM   #2
68350
Senior Member
 
68350's Avatar
 
Join Date: Jan 2002
Location: Williston, ND
Posts: 2,999
Re: GLASSPACKS-Who manufactures the best one?

I personally love the thrush glass packs. Nice mellow sound while cruising and loud when you want them to be
__________________
68 Chevy CST/10, 50th Anniversary, 327/th400, 373 posi, buckets
68 GMC Shortbox Stepside, 402/th400, Tilt, Tach, Bucket Seats, 3.08 Positraction
69 Chevy Camaro SS, 383, 4 speed, positraction
70 Chevy El Camino SS396, Triple Black, 454/th400, Tach
70 Chevy Shortbox Stepside 4x4, 350/th350, Tilt, Tach, Cab Lights, Bumper Guards, Tow Hooks
70 Chevy 3/4 Longbox, 350/auto, 70k, SURVIVOR
71 Chevy Blazer, CST, 350/auto
71 GMC Sierra K2500, 454, 4 speed, 4.10 posi, 37s
71 Custom/30, Open Road, 350/th400, tilt
72 Chevy Shortbox Fleetside, 496 Stroker/th400, Tilt, Tach, Bucket Seats, 3.42 Posi
72 GMC Sierra Grande 2500. 427/th400, tilt, a/c, tool and stowage, buckets/console, 3.54 posi
68350 is offline   Reply With Quote
Old 08-09-2016, 09:42 PM   #3
special-K
Special Order

 
special-K's Avatar
 
Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,852
Re: GLASSPACKS-Who manufactures the best one?

I'm not up on what's still around or not, but Cherry Bomb and Thrush are what guys always ran when they were so popular. Not to be yet another guy steering you away, but have you ever considered chambered mufflers? They are what Vette sidepipes had and are bullet shape
__________________
"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed"

GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project)
GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling)
Tim

"Don't call me a redneck. I'm a rough cut country gentleman"

R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~
special-K is offline   Reply With Quote
Old 08-10-2016, 12:16 AM   #4
allchevy58
Senior Member
 
allchevy58's Avatar
 
Join Date: Aug 2011
Location: Reno, Nv.
Posts: 1,436
Re: GLASSPACKS-Who manufactures the best one?

Flow-Pro sound good and last. Back in the day, Purple Hornies sound good.
__________________
1927 Willy's Knight 24,000 original miles, 1958 Impala 283/Powerglide, 1971 Monte Carlo 350/350, 1972 GMC K2500 350/350, 1976 Chev. K10 350/350, 2006 GMC Sierra 2500HD LBZ Duramax/Allison, 2006 Chev. Silverado K3500 LBZ Duramax/Allison
allchevy58 is offline   Reply With Quote
Old 08-10-2016, 12:28 AM   #5
kcsa75
Registered User
 
kcsa75's Avatar
 
Join Date: Oct 2010
Location: Kansas City
Posts: 3,590
Re: GLASSPACKS-Who manufactures the best one?

When I was into that sort of thing, it didn't matter which muffler was "best." We would take a brand new glasspack out of the box, soak the inside with lighter fluid and light it up. That burned out all the fiberglass.
The idea was to be loud. But if you got stopped by the cops, you could say you had a muffler.
__________________
Willie
Swamp Angel Truckers
'72 C10 Highlander


People who blindly follow a GPS end up on television programs on The Weather Channel. Some survive, some don't.
kcsa75 is offline   Reply With Quote
Old 08-10-2016, 05:54 AM   #6
special-K
Special Order

 
special-K's Avatar
 
Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,852
Re: GLASSPACKS-Who manufactures the best one?

Quote:
Originally Posted by kcsa75 View Post
When I was into that sort of thing, it didn't matter which muffler was "best." We would take a brand new glasspack out of the box, soak the inside with lighter fluid and light it up. That burned out all the fiberglass.
The idea was to be loud. But if you got stopped by the cops, you could say you had a muffler.
The first day I ran like that a cop gave me a ticket. He passed going the opposite direction and noticed I was loud, but didn't do anything. He said it wasn't till he could still here me through the woods after we both had turned onto parallel roads with the woods between that he came looking for me! I had picked up my friend and was headed out when he found me 10 minutes later. I guess that was a little loud

I bought my first set of Thrush Hush mufflers that same week. That was Thrush's answer to stricter sound level laws that were being implemented around the country in the mid-70s. Basically, the beginning to the end of glass pack popularity.
__________________
"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed"

GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project)
GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling)
Tim

"Don't call me a redneck. I'm a rough cut country gentleman"

R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~
special-K is offline   Reply With Quote
Old 08-10-2016, 06:22 AM   #7
Ken B
Registered User
 
Join Date: Sep 2015
Location: danbury, ct.
Posts: 568
Re: GLASSPACKS-Who manufactures the best one?

And make no mistake, the round Hush Thrush mufflers were very loud when you nailed it. I had a set on a 69 Dodge Charger R/T with a built 440 with 4 speed back in the 80's and it sounded wicked...
I've had the old style Cherry Bomb's as well, you could start with a pair of them. Not too expensive so if you don't like them you can look for something else...
Ken B is offline   Reply With Quote
Old 08-10-2016, 07:37 AM   #8
67 chevelle
Registered User
 
67 chevelle's Avatar
 
Join Date: May 2013
Location: WEST PALM FLORIDA
Posts: 1,174
Re: GLASSPACKS-Who manufactures the best one?

I also had cheery bombs on my 68 camaro at one point , they were too loud , even for a 18 year old ,off coarse I had nothing behind them , Im sure they would have sounded completely different with a crossover [something we never imagined ] and tail pipes out the back .
__________________
68 Long Fleet , ly6 , turbo 350 , 3-5 drop , original paint , front discs
67 Small window , 7 foot bed , tweaked 6.0 LSX 2004R Medium Olive
58 Apache fleet , 235 , offy intake , dual exhaust , 4 on the floor , red/white
69 Long Fleet , Custom , 6.0, 4l60 , AC , Medium Olive
67 chevelle is offline   Reply With Quote
Old 08-10-2016, 10:12 AM   #9
AnotherWs6
Registered User
 
AnotherWs6's Avatar
 
Join Date: Feb 2016
Location: Westchester, NY
Posts: 602
Re: GLASSPACKS-Who manufactures the best one?

I put this guy on my Silverado a few months ago after my SECOND Flowmaster rusted out again.

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

Running stock manifolds and cats, then back to this thing and it just ends before the axle, no tail pipe or anything. I was impressed by the quality, it is a heavy item too. It really doesn't sound much different than the 2 chamber flowmaster I had dumped in the same spot before. That might be specific to my setup. Not sure how it would sound on a motor with headers, no cats etc. Would buy again.
__________________
1968 C-10 Suburban - Original 396/TH400
2002 Transam WS6 - M6 - Black/Black - Evil Garage Queen
2000 Silverado - DD - Small lift+Body lift+35" Duratracs+4.88's + Eaton TruTrac - Monster Truck
2010 Cadillac CTS Wagon Sport - Wife's DD and the only classy car we have.
AnotherWs6 is offline   Reply With Quote
Old 08-10-2016, 10:15 AM   #10
Ft.ValloniaStreaker
Registered User
 
Ft.ValloniaStreaker's Avatar
 
Join Date: Jul 2013
Location: Southern Indiana
Posts: 160
Re: GLASSPACKS-Who manufactures the best one?

Cherry bombs are my choice. Like stated before, just to prove that you have mufflers. I like the downhill rumble to.....
Attached Images
 
Ft.ValloniaStreaker is offline   Reply With Quote
Old 08-10-2016, 01:32 PM   #11
Stephen717
Senior Member
 
Stephen717's Avatar
 
Join Date: Aug 2016
Location: Loris South Carolina
Posts: 428
Re: GLASSPACKS-Who manufactures the best one?

I am partial to flowmaster and i know they dont make a glasspack (if I had to have a glass pack I'd get a thrush) but they do have a pro series race muffler that I looked at for my truck. part number 815430.
Stephen717 is offline   Reply With Quote
Old 08-10-2016, 03:34 PM   #12
special-K
Special Order

 
special-K's Avatar
 
Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,852
Re: GLASSPACKS-Who manufactures the best one?

I have full length headers, Flowmasters, no crossover, and galvaneel 2 1/4" pipes running all the way back tipped down from behind the Bartens bumper in the rear corners. I did all that in '04 and it still sounds great and still holding together fine without touching a thiing. In fact, just did heads, painted the headers back up, new gaskets and bolts and movin' on down the road sounding great!
__________________
"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed"

GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project)
GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling)
Tim

"Don't call me a redneck. I'm a rough cut country gentleman"

R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~
special-K is offline   Reply With Quote
Old 08-12-2016, 01:41 AM   #13
ck5566
Account Suspended
 
Join Date: Apr 2016
Location: Rancho Mirage, Ca.
Posts: 875
Re: GLASSPACKS-Who manufactures the best one?

Quote:
Originally Posted by special-K View Post
The first day I ran like that a cop gave me a ticket. He passed going the opposite direction and noticed I was loud, but didn't do anything. He said it wasn't till he could still here me through the woods after we both had turned onto parallel roads with the woods between that he came looking for me! I had picked up my friend and was headed out when he found me 10 minutes later. I guess that was a little loud

I bought my first set of Thrush Hush mufflers that same week. That was Thrush's answer to stricter sound level laws that were being implemented around the country in the mid-70s. Basically, the beginning to the end of glass pack popularity.
Speaking of Thrush Hush mufflers back in the late 70's Me & the Wife had a 70 1/2 Z28 350 LT1 pumped just a little and I did install the Thrush Hush shorty mufflers right from the Collector tubes starter tail pipe. Talk about LOUD, yep yep

PS I also had Cherry Bombs on my 57 Cadillac, we ran it on the free way to heat them up and then ran the garden hose up the pipes, probably did the same thing in melting the fiberglass. it was a sweet sounding Cad.

Last edited by ck5566; 08-12-2016 at 01:47 AM.
ck5566 is offline   Reply With Quote
Old 08-12-2016, 09:38 AM   #14
Ironhorse
Senior Member
 
Ironhorse's Avatar
 
Join Date: Jul 2001
Location: Wellington, Ks
Posts: 10,284
Re: GLASSPACKS-Who manufactures the best one?

I personally like the Thrush mufflers myself. Deep, mellow tone until you nail it, then they "talk" to you. I have 40 year old original round galvanized Thrushes on my '57 with headers. Love it! My '71 Chevelle has Thrush Turbo's with full length 2 1/4'' true duals, no X or H pipe. Deep mellow tone and loud enough for me when I hammer it. Not too loud at cruise that I can't hear the stereo cranking out CCR, Bob Seger, Stones or similar. Can't go wrong with Thrushes in my opinion.
__________________
1971 Chevy 1/2T 4x4 LWB 350 V-8
Was sm465-now 350TH/np205
Tilt, Tach, Towhooks
Original Truck AM/FM
Wellington, Ks
Ironhorse is offline   Reply With Quote
Old 08-12-2016, 09:44 AM   #15
Brysenj
Registered User
 
Brysenj's Avatar
 
Join Date: Apr 2016
Location: Wrens , ga
Posts: 28
Re: GLASSPACKS-Who manufactures the best one?

I got duel magnaflow glass packs on mine you can cruise around or have the whole neighborhood hear you
__________________
Brysen and his trucks
1971 Custom/10 (the big c10)
1970 C/10 (the gold truck)
Brysenj is offline   Reply With Quote
Old 08-12-2016, 10:13 AM   #16
Eddie H.
Registered User
 
Eddie H.'s Avatar
 
Join Date: Mar 2001
Location: Paradise TX USA
Posts: 1,200
Re: GLASSPACKS-Who manufactures the best one?

I had cherry bombs back in the old days. One time the county sheriff pulled me over, said he could hear me coming from 3 miles away. I guess the fact that I was doing about 130 mph when I went past him didn't help either.
__________________
"Negative people always seem to have a problem for every solution"
Eddie H. is offline   Reply With Quote
Old 08-12-2016, 10:05 PM   #17
Smokintire70
Registered User
 
Join Date: Jul 2016
Location: Santa Rosa California
Posts: 52
Re: GLASSPACKS-Who manufactures the best one?

Thank you guys so much this has been very helpful! I didn't know there we so many brands. Thanks!
Smokintire70 is offline   Reply With Quote
Old 08-13-2016, 12:49 PM   #18
midniteblues
Registered User
 
midniteblues's Avatar
 
Join Date: Jul 2011
Location: strausstown pa
Posts: 3,394
Re: GLASSPACKS-Who manufactures the best one?

Cha cha cha CHERRY BOMB!

i had the kind that bolted straight too the header and short turn outs out the side. I was stopped twice each time the officer asked me if i had any exhaust....you could clearly see the pipes coming out. Never a ticket just a damn thats loud car warning.

I removed them for a proper exhaust but still have it i keep them around and use them on projects till i get a good system on.
__________________
81 camaro 355 4/spd 342 posi my first love.
67 swb step 454/4spd ott 373 posi 4/7 drop.
2000 s10 zr2 little blue truck that never gets stuck.
'74 heald super bronc vt8. tecumseh powered moon rover.
midniteblues is offline   Reply With Quote
Reply

Bookmarks

Tags
engine, exhaust, glasspacks, muffler


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 08:08 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com