2.5 or 3 inch
02-27-2005, 01:45 PM
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Join Date: Oct 2004
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Posts: 477
2.5 or 3 inch
here is my motor...347 ci..pro top line heads..rpm intake 750 holley..all msd..10.5-1 comprrssion..cam is .520 with 292 dr..the headers are full lenght 1-5/8 with 3 inch collector..should i get 2.5 inch or 3inch exaust system
02-27-2005, 02:07 PM
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Join Date: Nov 2004
Location: Charleston, SC
Posts: 1,538
RE: 2.5 or 3 inch
3 inch. youre gonna be making lots of exhaust, plus it looks cooler
02-27-2005, 07:39 PM
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Join Date: Mar 2004
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RE: 2.5 or 3 inch
for a small block like a 347 I would think a 2.5" exhaust would be plenty big enough after the collectors.
02-27-2005, 07:41 PM
6th Gear Member
Join Date: Jan 2004
Posts: 5,836
RE: 2.5 or 3 inch
Not too positive but you may lose power going with pipeing that big.
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