anybody got or have an opinion about putting 3" exhaust on a 4.9?

 

Single would be ok, but duals I wouldnt go above 2.5

 

Probably a bit too big for a stock 4.9, on that a 2.5 works really well in place of the stock 2.25(?) (I changed mine so long ago I don't remember if it was 2.25" or 2".)
Give it some head work and a cam and 3" should be just right,

 

What i did was 3 inch in to 2.5 dual outlet muffler.

 

You might loose some back pressure depending on what muffler you use, an if its manual, you can count on popping.

 

I don't have any muffler on now, just 2.5" straight pipe out the side, sounds pretty mean, but not very loud, i was thinking about putting some clifford headers on, but then i'd pretty much have to get a new cat(s). And i don't know how much "head work" and a cam would cost. any guesses?