3" Double Barrel - Page 6 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

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Old 03-13-2006, 10:07 PM   #51
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The only place that may be doesnt look mandrel bend is the 3-4 inch pipe to fit the cowbell, but hey, what a curve!

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Old 03-13-2006, 10:10 PM   #52
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That'* correct. From the Y pipe to the mufflers is not mandrel bent. It had to be a custom bend because no one makes pipes for this car.
The connection from the 2 1/2" muffler to the 2" original tips was really tricky to fabricate because I wanted to keep the original tips in their original location. Actually I moved them back about 1/2" for a slightly better look.
Because the tips are only 2", I wasn't going to be fussy about slightly elongated bends in 2 1/2" tubes.
The sound is deep and sweet.
I opened it up during a ride a few minutes ago and I don't hear the whine of the supercharger much at WOT now
I really need to use those drag slicks now. Traction or rather lack of is very noticeable. I almost get the feeling that mileage will improve too, as long as the right foot stays off the floor.
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Old 03-13-2006, 10:14 PM   #53
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Nice custom install That looks great and I'm sure the tone is sweet
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Old 03-13-2006, 11:04 PM   #54
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It'* all 304 stainless steel too.
except those aluminum cowbells.

I can hear the engine growl.

....maybe I should do a trial fit on the 2.8" pulley.
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Old 03-13-2006, 11:10 PM   #55
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Yeah do the pulley thing

No pics of the res?
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Old 03-13-2006, 11:32 PM   #56
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Here'* one for you O'Neil.

The 3" tubing looks small compared to the tunnel....should've gone with 6"

Notice the extra O2 plug I had installed for that wideband analyser.



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Old 03-14-2006, 12:48 AM   #57
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Thanks, too bad the link dont work though
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Old 03-14-2006, 01:09 AM   #58
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Wow thats purdy.
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Old 03-14-2006, 02:48 AM   #59
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Looks good, I bet it sounds amazing
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Old 03-14-2006, 02:58 AM   #60
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Just came back from another run.
OMG, this Bonne has just undergone a transformation.
There is absolutely no knock retard with the 3.2 pulley. Tires will break free at any speed.
The sound is indescribeable.
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