Size of Bonneville DP? - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat

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Old 11-30-2004, 10:42 AM   #11
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All your discusion has helped me make up my mind. I have a chance at a 3 inch mandrel bend pipe for 150 installed. will be getting it at ASCIII here in Texas. My NA will get the DP first and I'll bring another one home sine I can only drive one car at a time. Should knock about .2xx off the quarter mile time.
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Old 11-30-2004, 02:20 PM   #12
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Originally Posted by OLBlueEyesBonne
The stock 2.5" DP is crimp bent, so a 3" crimp bent DP will still be a benefit. but if you can get a mandrel bent 3" DP made, for under $100 I say go for it. Then get a 2.5" or 3" Magnaflow/Carsound high flow catalytic convertor to go with it from or ebay (both places have free shipping on purchases over $50). The cat will cost less than $65 including shipping, and with the install (recommend having it installed at the same time as new DP) the total cost of the new 3" mandrel DP, new cat and installation should be around $210 or less.
With the crimp bent DP everything should cost under $150.
olblue i see what your sayin and yes a 3" crimp bent will still yield gains and is prolly more cost effective.

Originally Posted by jr's3800
A couple of pics... Most likely will do no good... But hey why not... lol

The 91

The 95
jr your 91 should have a 2.25" downpipe and your 95 should have a 2.5" downpipe, thats why the 95 downpipe looks bigger
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