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Old 01-21-2003, 01:21 PM
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Post Big 3" exhaust on '71 Chevelle

I've purchased the 'x-pipe' and flowmasters, (both 3"), and would like to run 3" tailpipes out the rear. This system will be hooked up to a 502/502. Will 3" tailpipes work any better than 2.5" (or is it worth it), and is there someone out there who sells big tailpipes for chevelles? No luck with Summit, jegs, Scoggins, and some of the other restoration vendors. They only have 3" pipes to the mufflers, not tailpipes. Thanks for the advice!!

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Old 01-21-2003, 01:49 PM
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Not much to be gained going to a 3" pipe, except for the sound, run 3" to the muffler and then 2.5 out the back. Besides ever try to get 3" tubing bent?
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Old 01-21-2003, 01:54 PM
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It will be loud.
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Old 01-21-2003, 02:16 PM
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What I did with mine was had my local Meineke (exhaust shop nearby does a lot of custom work) run 2 1/2 inch around the rear and then bumped it up to 3 inches out the back. Looking at the car on the ground you only see the 3 inch out the back. The pictures are large (500K) so I posted two links to the pictures instead of displaying them here if you want to see. One pic shows how it's run under the car and the other how it looks on the ground.

<a href="http://hotrodders.com/cgibin/album/album.pl?photo=00001452/IMAG0004.JPG" target="_blank">underneath car</a>

<a href="http://hotrodders.com/cgibin/album/album.pl?photo=00001452/Mustang5.jpg" target="_blank">car sitting in driveway</a>
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Old 01-21-2003, 02:20 PM
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Any good muffler shop should be able to bend the pipe for you. I have 3" all the way on my Vette.
Welded all in 1 piece and easy to drop to work on.
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Old 01-21-2003, 05:38 PM
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You can get away with a lot more in a Corvette than in most cars because of their suspension. Just look at how low most of them sit to the ground, it's amazing they don't bottom out evey ten minutes. It's one of the things I always liked about Vettes, just looks cool sittin' down low.
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Old 01-22-2003, 07:33 AM
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A friend of mine bought a set of Stainless Steel pipes pre-bent for his Camero that are 3" and fit great with Flowmasters. Loud but nice.
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Old 01-22-2003, 09:20 AM
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For a 502, I would say yes to it working better. I have 3 inch on my SBC400 with flowmasters. It sounds great, and I had no problem getting it bent.

Chris
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