View Poll Results: 2.25 inch or 2.5 inch
Voters: 25. You may not vote on this poll
2.25 or 2.5 inch exhaust piping?
02-23-2009, 10:41 PM
#3
4th Gear Member
Join Date: Mar 2008
Location: Houston, TX
Posts: 1,241
02-23-2009, 10:49 PM
#5
5th Gear Member
Join Date: Sep 2006
Location: Australia
Posts: 2,266
bigger aint always better.
I'm sure there's a theoretical point which someone has done the math for.
the best sounding 351 i ever heard was around 480hp thru 2x 2.25"
a smaller pipe IMO sounds crisper and cleaner. bigger pipe will give you deeper if thats what you like.
this poll should be good for at least 2 days of arguments
I'm sure there's a theoretical point which someone has done the math for.
the best sounding 351 i ever heard was around 480hp thru 2x 2.25"
a smaller pipe IMO sounds crisper and cleaner. bigger pipe will give you deeper if thats what you like.
this poll should be good for at least 2 days of arguments
02-24-2009, 08:05 AM
#10
5th Gear Member
Join Date: Apr 2007
Location: Texas Hill Country
Posts: 2,100
I would say at 300hp (350cid) or so, you need 2.5" duals. When you start getting above 400hp (400cid), 3" duals is needed to prevent exhaust pulse issues. More important than the sizing, though, are the restrictions. Do not put 2.5" pipe in, and then bend it with a regular bender. That defeats the entire purpose of larger pipe. Either weld J-Bends or mandrel bend the pipe.
FWIW, I put dual 3" with welded J bends on my 383. It flows nicely and sounds pretty dang good if I may say so myself.
FWIW, I put dual 3" with welded J bends on my 383. It flows nicely and sounds pretty dang good if I may say so myself.