Last week I had my stock muffler swapped for a Flowmaster Delta Flow 50 Series. My truck is a 1998 XL with the 4.2 V6. I was really hoping it would be a little louder than it is. It's barely louder than the stock muffler I had removed. I'm thinking of switching to the Flowmaster 40 Series. Any other 4.2 owners have the 40 Series on their trucks? Are you happy with the sound? Also, what's the part number for this muffler? Thanks for your suggestions...

Dave

 

when i had the 4.2, i had the flowmaster 40 on it and i liked it alot! sounded real good, i would recommend it.

 

I've got a 40 series flowmaster on my 99 extended cab flareside sport. I would definately recommend it. Sound is louder than stock.......but not annoyingly loud or "rice" sounding. At idle, it makes it sound like a V8. I've had many people ask my if I was running a 4.6 or 5.4. They are very suprised to hear me say 4.2 V6. Then ask me what kind of exhaust I'm running.

There is very little drone in the cab at highway speeds either. The sound is definately noticeable. I just removed the stock muffler and installed the flow with a nice 3" stainless steel Magnaflow tip out the side behing the rear passender wheel. Looks and sounds like it should have from the factory. 8)

 

My cousin said the same thing about his '02 4.2L with the 50 series. He's actually thinking about buying the 40 series as well. I hope the 40 series will give you the sound you are looking for!

 

I've got Flowmaster 40 on my F-150 w/the 4.2 L V6 and I like it alot!

 

i got the 40 series on mine i just used the existing system and put the Flowmaster in there minus the factory muffler....it sounds nice, i dont get V-8 sound like my mustang but it is def. louder than stock