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Old 04-01-2003, 11:10 PM   #1
HotRod929
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Anyone ever run these glasspacks???

I ordered these really cheap 2.5" glasspacks that are called "Thunderbolt Glass Packs" and I was wondering if anyone has ever run these and could tell me how they are as far as sound. I got them from this place: http://www.racerpartswholesale.com/tbolt1.htm
Let me know. Thnaks

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Old 04-01-2003, 11:14 PM   #2
Blackhawkdc
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Not those exact ones, but they look awefully close to the Flo-Pro glasspacks I've got on my truck. I've got the 3"ers, but my buddy has a big block with 2.5"ers and loves the sound
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Old 04-01-2003, 11:31 PM   #3
MU72
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Not sure what brand mine are, but they are 12" long and sound great. What size did you get, the length will make a big difference in the sound you get.
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Old 04-01-2003, 11:32 PM   #4
krazy_texan
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never heard of them but i love the thrush glass packs the muffler shop put on mine the are 3"ers
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Old 04-01-2003, 11:41 PM   #5
HotRod929
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I got the 2.5" diameter and 18" long ones.

HotRod
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1970 Chevy C-20
350 V-8
Turbo 350 w/ shift kit
Dana 60 w/ 4.10 gears AND Powr-Loc POSI
New Additions:
Summit Headers
135amp alternator
Proform HEI
Edelbrock 1406 600cfm carb
Sunpro Tach
Powr-Loc POSI
Edelbrock Performer RPM Intake
MSD 6A Ignition Box

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Old 04-04-2003, 12:30 PM   #6
OregonLonghorn
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I replaced mine with new ones when I rebuilt everything. The originals sounded good with the stock exhaust manifolds but I do not like the sound with headders. I am converting to flowmasters as soon as $ permits.
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