Domain

Hey guys,
I ordered a flowmaster 40 series muffler and the stock muffler in my 99 f150 is longer in length than the flowmaster is. Does this matter, or when you remove the stock muffler, the pipes are longer than what it looks? Also it seems to look as if the stock muffler is welded on, and I have no cutting tools, not really sure what my best bet is. Should I take it to a shop? Will I need to buy myself some clamps?

BrowningSCrew

You'll need a filler piece of pipe to make up the difference and the old muffler has to be cut off

Domain

Where can you get these fillers

BrowningSCrew

Tour local pats store should have it

Domain

Not sure why flowmaster would say the fitment is for my year and model if I need to buy extra piping...
http://www.autopartswarehouse.com/de...QF1342543.html

http://www.flowmastermufflers.com/sh...le=&orig=42543

both of those websites say it should fit.

redfisher584

flowmasters are universal just as any aftermarket muffler..... to an extent of course

BrowningSCrew

The pipe size is the same, but I takes a little extra to make it connect

jcavers

Just buy a few more feet of pipe and dump it out in front of the back tire. Cheap n easy

7700SCREW

You spent the money to buy your self a good muffler,so don't cheap out on the install if you don't have the tools to do the job!
Take it to a shop have them install it. They will weld the seems and add a piece of exhaust tubing for a leak free exhaust.

gryffinwings

+1, take it to a shop.