exhaust pipes/gas tank...safe??? - Team Camaro Tech
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post #1 of 3 (permalink) Old Nov 15th, 01, 11:20 AM Thread Starter
Join Date: Nov 2001
Location: Dayton Ohio U.S.A
Posts: 29

i have a 67' camaro with headers and true dual exhaust. i am haveing the hardest time figureing out where to have the exhaust pipes come out. i know there supposed to aim down right behind the rear wheels....but i want something with a little more pizzaz than that. i wanted 2 3/4" pipes all the way through but had to use 2 1/4" in order to fit the pipe over the rear axle, back down and out at the back,right next to the back end of the rear quarter panel, because thats the only place it will fit,so we thought. but apparently it doesnt fir there because no matter what i do, they rattle against the side, theres simply not enough room. i want visible exhaust pipes,and the only other option i can think of is to just bring them up over the axle, and back down under the gas tank. is that safe. it wont be too close. but i am worried. anyone know if that'll work, or know a better solution?
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post #2 of 3 (permalink) Old Nov 15th, 01, 10:21 PM
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Join Date: Jan 2001
Location: skiatook, ok
Posts: 3,692

I use a flowmaster force II system on my 77 nova (very similar underneath)...2 1/2" pipes exiting under the back bumper. Clearance is no problem...and I know many others use similar systems on camaros also with no problems. My pipes run between the lower rear quarters and the tank, just like your car would, and I have plenty of clearance on both sides. Enough even for a 3" system with a little room to spare. My system uses a crossflow muffler, and the tailpipes actually intrude on the rear wheel wells just a tad, but are in no danger of hitting the tires. How much clearance is between the body and the fuel tank? Has the car ever been wrecked that you know of?

375hp 78 Chevy truck
77 Chevy Nova
95 Chevy Lumina 3.4L
and building a 78 Nova
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post #3 of 3 (permalink) Old Nov 16th, 01, 06:00 AM
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Join Date: Oct 2001
Location: Londonderry, NH
Posts: 1,010

I run the Flowmaster Force II on my '68. It has 2 1/2" pipes front to back and fits very nicely. The 2 1/2" tailpipes run over the leaf spring and just below the quarter panel and exit straight back under the taillight panel.

I doubt that you need 2 3/4" pipes. My 450 HP, 331 breathes just fine through this system.

I have always believed that:

1)Loud cars just attract unwanted attention!
2)If you are looking for massive power gains from your exhaust, forget about it. Once you've added the headers and duals, for most cars there isn't 10 HP difference between the best and worst system. On the street it just doesn't matter that much whether you have 430 or 450 Horsepower!!

Paul D.

68RS, 331, 10.5:1, 4spd, 3.90 9", lowered, 245-45-16's all 'round
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