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04-18-2002, 10:33 PM
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#1 |
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Registered User
Join Date: Sep 2001
Posts: 2
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Custom exhaust
Anyone running a custom exhaust on their trucks? If so, what do you have? I think Im going to have to rebuild mine, and would like to make it "legal" this time. Right now I'm running true dual exhaust with full length headers, no cats, and 3-chamber flows. I really like how it sounds now, but for it to be "legal" it has to be a single pipe. So Im thinking a good 3-inch system sould be good, any suggestions?
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04-19-2002, 01:53 AM
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#2 |
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I'm back with 2nd truck!
Join Date: Feb 2002
Location: Texas
Posts: 3,774
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I'm running 2.5 all the way from the headers with a X pipe then to 2- 2chamber flomasters 40 series dumped right after tehm before teh axle. You can see it here at http://www.geocities.com/cjhicks1/exhaust.html Also you can hear it here http://www.captkaoscustoms.com/temp/TRUCK.mp3 On yours I would contact the local Department of Transportation and ask them what exaclty do you need and what are the limitaions. If you have to run the single pipe get a high flow cat that has dual inlets and a single outlet. say 2.5 or 2.25 for first pipe then 3 all the way after the cat and through the muffler. That should help you out alot in performance but still being legal with one exiting pipe
------------------ BRANDON 1979 CHEVROLET BONANZA BIG10 350 GM Crate Engine ZZ4,1406 Edelbrock, 1 5/8" Heddman Headers 2 1/2" Dual Exhaust with X pipe and Flowmaster 40 Series Mufflers,350 Turbo Transmission,3.07 Gears My website for the truck.
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1979 Chevrolet Bonanza Big10 "Tootsie Roll" 1985 Chevrolet Silverado (wife's) Member of the Southern Bowties Club "Don't underestimate how sexy a fat man who drinks to excess can be." Homer Simpson |
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04-19-2002, 07:08 AM
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#3 |
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BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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87Grey,
Here are some sound of my truck. It has the stock manifolds, one high flow cat (blown out by accident  ) and one 40 series flowmaster. It has a very nice rumble. My brother has the same setup with a 3" flowmaster and it's way louder. It's a little annoying for the highway. My setup is great for the highway. You can pull up along side and just barely hear it at highway speeds. If want rumble and city driving the 2.5" flow master will work. If want noise add the 3" flowmaster. BAD BOW engine BAD BOW RUMBLE ------------------ Gerardo 1983 Custom Truck TX Plates: "BAD BOW" |
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04-19-2002, 07:43 PM
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#4 |
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Oh,you can't buy that new
 
Join Date: Apr 2000
Location: Pennsville,N.J. 08070, USA
Posts: 2,039
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If you want a first class street legal system ,from front to back,then check into the Edelbrock TES systems. DAVE
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"been there, done that, ruined the T-shirt". 2007 LBZ GMC Sierra, ECSB 2006 LM7 RCSB Silverado 98 Vortec project. 94,3500,6.5L 4L80 81 SWB GMC POS finally gone  73 Pinto, stock, w/CragarSS's-eww  LOTS of Cummins trucks. |
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04-20-2002, 03:07 PM
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#5 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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To be legal, it does not matter the # of pipes coming out. You can run daul exhaust, you just can not relocate your catilitic converter(nor add a second one). They consider that tampering. They way to do it is to get a cat with 2 inlets, and outlets. This is a perfectly legal part, and since your verter is missing, it is legal to install it. (if you have a good cat, it is considered tampering to remove it...even if to just replace it with a new one)
------------------ '69 G.M.C. 350/350. Trying to clean up the left over damage from the Dope-Smokin-Old-Man I've been dubbed the Longhorn Freak/Fanatic/Expert, I just hope I can live up to it. FINALLY got the HORNIAC...a '70 one ton Longhorn with a Pontiac 350/350 and lots of 'personality'. Check out The Longhorn Webite. If you need a pic posted, E-mail me at longhornmail@yahoo.com Andy, in Columbus Ohio |
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