Pipe Sizes
Thread Starter
Joined: Jun 2005
Posts: 32
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Pipe Sizes
Hey guys, i searched the forum and couldn't find the exact answer i was looking for.
I Want to know the size of the in and out pipes of the stock muffler, for a 1999 5.9l 1500, and i also wanna know what Size In/out i should get for the Flowmaster 40 series...and also if i should get a dual out, or just dump it before the axle. Any help would be appreciated
I Want to know the size of the in and out pipes of the stock muffler, for a 1999 5.9l 1500, and i also wanna know what Size In/out i should get for the Flowmaster 40 series...and also if i should get a dual out, or just dump it before the axle. Any help would be appreciated
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Joined: Jan 2004
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RE: Pipe Sizes
I think the stock sizes are 2.5" in & out.
if you have a 2x4 you could go with dual 2.5" outs and you should be ok, you will loose a little low end torque but the top end will rock. if you have a 4x4 i'd go with the dual 2.5's knecked down to 2.25" right out of the muffler. this will be slightly larger in flow area than a single 3" out
if you have a 2x4 you could go with dual 2.5" outs and you should be ok, you will loose a little low end torque but the top end will rock. if you have a 4x4 i'd go with the dual 2.5's knecked down to 2.25" right out of the muffler. this will be slightly larger in flow area than a single 3" out