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Also known as the Grand Sport.

A one year special. 1000 were made to honor both the end of the C4 and the original racers, called Grand Sports, fr...
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Big_John Exhaust questions
Guru Newb
32 Posts
Member since:
2005/9/19 0:00



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I need a few opinions here. I have my '85 Corvette that I'll be using 1 3/4" primary Hooker 2151's with 3" collectors. Yea, I know 1 5/8 is better..what ever, I got a deal on these. Anyway, we'll be using the car for autocross only with no street driving, so no cats will be used.

The rules I have to follow are simple, I have to run mufflers and the exhaust has to end behind the driver. I'll use some Dynomax race mufflers that are basically glass packs. From past experience, the cars are a little quieter with turndowns pointed at the pavement, so I'll use those too ending under the car just past the driver. I'm looking for mid range power and torque here.

So..this brings me to my questions. After the collector, should I run 3" or 2 1/2" pipe to the muffler. Mufflers can be had in 3" BTW. Should I run a X-pipe?
Posted on: 2005/11/2 21:30
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AdvancedAutoCC RE:Exhaust questions
Guru Newb
Cape Coral, FL
6 Posts
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2005/10/6 0:00



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Run 3" collectors back to a 3" X-pipe, then into 3" mufflers. An excellent choice for race mufflers are Twister race mufflers. I've put a few pair on race cars, and have had lots of positive feedback. Details on my website.

Good luck to you!
Posted on: 2005/11/3 17:26
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Robert
"The poster known as RacerX on Corporate Forum" ;)
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Big_John RE:Exhaust questions
Guru Newb
32 Posts
Member since:
2005/9/19 0:00



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Quote:
Run 3" collectors back to a 3" X-pipe, then into 3" mufflers. An excellent choice for race mufflers are Twister race mufflers. I've put a few pair on race cars, and have had lots of positive feedback. Details on my website.

Good luck to you!


I didn't see a price on your website for those mufflers. I did a little looking and its got me curious.

I'm still undecided, but I'm leaning towards 3" with an x pipe.
Thanks
Posted on: 2005/11/4 2:15
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bogus RE:Exhaust questions
Grand Imperial Pooh-Bah
San Pedro, CA
20856 Posts
Member since:
2005/9/7 0:00



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you all but need, nay require, an xpipe. It will help with the drone.

it will also help with performance.
Posted on: 2005/11/4 5:08
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LAB RE:Exhaust questions
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Fort Worth, Texas
1 Posts
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2006/7/4 0:00



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Where can you purchase x pipes? Does anyone make a x pipe for a 96 with stock exhaust?
Posted on: 2006/7/5 1:36
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bogus RE:Exhaust questions
Grand Imperial Pooh-Bah
San Pedro, CA
20856 Posts
Member since:
2005/9/7 0:00



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magnaflow makes xpipes, but for a stock exhaust, there won't be much benefit.
Posted on: 2006/7/5 5:07
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