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Re: 327 exhaust pipe size
Wont hurt a thing to run either 2.25 or 2.50 don't think you could tell a difference in either with or without a balance pipe besides sound wise. Seat of the pants dyno says you wont but if you put it on a real dyno you will see it on paper then. JUST MY OPINION 
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2001 Silverado K-1500
2005 FXDWG stage3
69 CHEVY Short/Step 327/4L60 373 posi
63 IMPALA 327
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