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I've searched and havent found a CLEAR answer yet, which glasspacks flow the best? Cherry bombs, purple hornies, thrush, ill even throw in bullets (even though not a true glasspack) I'm thinking of going with true dual 2.5" and glasspacks dumped before the rear. Cherry bombs are only 20 bucks and they are a classic muffler. But if something flows better and isn't that much more id go with them. Also what about using a 3" glasspack in a 2.5" system?
I'm not sure there is much of a straight answer to this one. Unlike a conventional muffler, a glass pack is basically a tube with fiberglass wrapped around it. The exhaust gas really isn't restricted or re-directed as with the mufflers that are standard on our car. I've always thought that glass packs were simply equivalent to straight piping from a flow standpoint. Dropping a 3" glasspack in a 2.5" exhaust would probably be the same as dropping a section of 3" pipe in there.
when i put a cherry bomb on my car it was where the cat was suspose to be and without it it sounded really loud and with it it was quieter but still obnoxiously loud
The problem with the typical Cherry Bomb and other glass packs is the perforated tube is smaller than the inlet, which leads to restriction. Using a 3" muffler in a 2.5" system would help alleviate that.
Bullets have the same size internal tube as inlet/outlet.
if you want a real glasspack, go with a thrush. i have one and no complaints. just be aware that true dual side exits are hard to do and it will cost you ground clearance. good luck!
LG4 305ci 4bbl motor, 2.5" Cherry Bomb Extreme muffler- side exit exhaust, Cragar 15x7 Black D Window wheels (4" backspacing), Cooper Cobra Radial GT tires (P235/60R15), 36mm hollow front sway bar with wonder bar, 24mm rear sway bar, Energy Suspension endlinks and Guldstrand bushings, Edelbrock Elite 4222 air cleaner with K&N filter, FF Dynamics 16" Cyclone electric fan, Flex-a-lite Variable Speed Fan Controller, custom fixed headlight conversion with 5000K HIDs and Silverstar Ultra H7 bulbs, Pilot PL-362W driving lights with Hella 100W H3 bulbs, Deka Intimidator 9A78DT AGM battery
The problem with the typical Cherry Bomb and other glass packs is the perforated tube is smaller than the inlet, which leads to restriction. Using a 3" muffler in a 2.5" system would help alleviate that.
Bullets have the same size internal tube as inlet/outlet.
Not necessarily. I think you are referring to a louvered core rather then a perforated core. Perforated core good, louvered core bad when it comes to glasspacks.
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Quote:
Originally Posted by punkdude908
if you want a real glasspack, go with a thrush. i have one and no complaints. just be aware that true dual side exits are hard to do and it will cost you ground clearance. good luck!
Totally!!!!!!! I have gone through this before and it is a nightmare.
Save yourself the trouble if this is the case and spend good money on the proper pipes.
Last edited by Guro 305; 05-24-2008 at 01:25 AM.
Reason: Automerged Doublepost
im not going to do side exits, im going to dump em right before the rear end. I think im going to go with thrush.
Keep in mind that you'll need about 2.2 cfm per crank hp for optimum performance. 400 hp requires al least 880 cfm of flow. The pipe diameter is not necessarily and indication of it's flow potential.
I'm researching myself and came across a couple of web sites.
