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3rd gen dual exhaust

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Old 07-03-2008, 01:32 PM
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Default 3rd gen dual exhaust

I dont know where to put this topic I got a 1992 Z28 soon I will install Hedman LT and Im thinking of making it dual exhaust currently it got Magna flow cat back and I dont know if I should switch to dual exhaust or stay the same way,who got dual exhaust on his 3rd gen or 4th gen and what mufflers are you using?My Z28 is 350ci TPI with March pulleys,MSD wires and Blaster coil,TB bypass,smog pump deleted along with catalytic converter,timing gear,tranny cooler,shift kit and 3.73 so should I go dual exhaust? what mufflers do you suggest if I go dual exhaust?
Old 07-03-2008, 02:09 PM
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Powersticks


I had 3" tru duals over the axle on my 383ci IROC-Z, back in the day, forget what mufflers I had back then. My new LS1 set up will be using powersticks, something similar to this:

Old 07-03-2008, 02:45 PM
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Thirdgen.org has tons of helpful stuff for us third genners.
Old 07-03-2008, 04:17 PM
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Hedman longtubes, Hedman S-xtension pipes w/ ball and socket, Summit 2-1/2" x-pipe kit, and 2 Flowmaster 1-chamber mufflers, and 2 45* turndowns.
Old 07-03-2008, 09:16 PM
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Personally I say not to limit your already precious ground clearance. Go with a properly built y-pipe setup instead as it will support just as much as a properly designed dual setup will.

Some even think that a proper y merge will create a better scavaging effect than an x (best you can get for duals) pipe will. Plus the flowmaster y (about the best you can get) is CHEAP from Jegs. I paid under $70 shipped for mine.
Old 07-03-2008, 11:56 PM
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ROCNDAV the true dual Im thinking about is half kit like this



so what mufflers do you suggest? I want something loud and nice sound
Old 07-04-2008, 04:02 AM
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I ran straight pipe all the way out the back of my 89.




It is not bad at idle and driving, but it wakes up when you get it.
Old 07-04-2008, 08:47 AM
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I found this muffler in Summit I think I will go with them http://store.summitracing.com/partde...0&autoview=sku the thing that made me interested in them is "Wild sounding muffler with just the right noise, a deep, throaty sound, similar to the muscle cars from the early 70's" so what do you think?
Old 07-04-2008, 08:51 AM
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Originally Posted by ZONES89RS
I ran straight pipe all the way out the back of my 89.




It is not bad at idle and driving, but it wakes up when you get it.
thats crazy man btw we look the same what you got under the hood? specs plz
Old 07-04-2008, 10:48 AM
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i have 3" duals bullets on my 86'. i notched and boxed the subrame along the tranny tunnel so it tucks the pipes up in very nicely. i'm taking off the bullets though and putting borla xr1 on it. the bullets are a little to loud for my liking.
Old 07-04-2008, 01:57 PM
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Originally Posted by F-Body Lover
ROCNDAV the true dual Im thinking about is half kit like this



so what mufflers do you suggest? I want something loud and nice sound

I had similar mufflers (flowmasters) , but back then (1988) there wasnt as many choices as there are today.
Old 07-04-2008, 02:50 PM
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Originally Posted by F-Body Lover
thats crazy man btw we look the same what you got under the hood? specs plz
WAS a 383 with dart 230 cc heads, custom grind comp cams roller, hooker super comp headers, RPM air gap, 750 holley. Now, i pulled it because of the damn oil pressure acting funny. I think it is a cam bearing. So now i just installed a L98 from a 87 TA just to drive my car. The truck sucks on gas so i had to do something. Glad you like it.
Old 07-05-2008, 07:43 PM
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Originally Posted by ZONES89RS
WAS a 383 with dart 230 cc heads, custom grind comp cams roller, hooker super comp headers, RPM air gap, 750 holley. Now, i pulled it because of the damn oil pressure acting funny. I think it is a cam bearing. So now i just installed a L98 from a 87 TA just to drive my car. The truck sucks on gas so i had to do something. Glad you like it.
thats sweet my man,ok my set up will be Hedman Hedders a straight 2.5" pipe and it goes throu SLP LM1 resonators and 3" turndowns is this set up is loud?
Old 07-05-2008, 08:33 PM
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It will be pretty good, might pop too much for your liking, or just right. Depends on the person.
Old 07-05-2008, 08:34 PM
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I want something loud really loud that ppl get scared when I arrive
Old 07-05-2008, 08:44 PM
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I got these parts waiting to be installed Hedman LTs,Jegs tranny cooler,Jegs ring and pinion 3.73 with richmond complete kit,March pulleys,Jegs timing gear noisy,B&M Quick silver shifter and soon I will order SLP resonators
Old 07-06-2008, 03:37 AM
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Sweet, you will feel a great difference when they are all installed at one time.
Old 07-06-2008, 04:12 AM
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I will stick to the stupid TPI for now and wait till the fuel injection system die on me and then carburetor all the way
Old 07-27-2008, 10:04 AM
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I have tru duals on my 87 trans am with dynomax headers and dual 2-1/2" piping
with no cats or AIR. I have glasspack mufflers and its somewhat quiet at idle but still noticeable when I get on it though you wouldn't think I even had mufflers.
Old 07-27-2008, 03:05 PM
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Originally Posted by F-Body Lover
I found this muffler in Summit I think I will go with them http://store.summitracing.com/partde...0&autoview=sku the thing that made me interested in them is "Wild sounding muffler with just the right noise, a deep, throaty sound, similar to the muscle cars from the early 70's" so what do you think?
a guy in my town has those on his 41 chevy pickup, it has a 383, and those mufflers sound awesome. basically the sound of a flowmaster and a magnaflow put together. i like them.


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