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Stock exhaust diameter?

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15K views 3 replies 4 participants last post by  william_04_X  
#2 ·
I believe the downpipe is 3", the rest of the exhaust is 3.5". Some folks claim that deleting the muffler gives them good results. Others have installed a Walker BTM (big truck muffler) and are happy with the results. Then there are those who have installed new systems from front to back and are happy. Mine is still stock...
 
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99 & up 7.3L Power Stroke Engine & Drivetrain 6.0L Power Stroke Engine and Drivetrain 99 & up Upgrades and Aftermarket - 7.3L Engine Power Strokes 1994-1997 General 7.3L IDI Diesels (Not Powerstrokes) 1988-1993