Hey everyone, this is my first time on here and was wondering if someone could tell me if it is worth the money to put a 40series flowmaster on a 4.2 v6. Would i be better off to go with just replacing the stock muffler or should i get a (1 inlet, 2 outlet) and run the pipes out the back? The truck is stock right now.

 

Do you want it loud? Personally, I don't like the 40 series. I have the 50 series DF SI/DO and it is plenty loud. It still sounds like a V6 though...if you get it done, get the SI/DO.

 

i have a 4.2 with dual 40 series and dumps, plenty loud almost sounds like a tractor!! bad investment

 

ok thanx guys, maybe i will save my money for some other mods. What are some good bang for the buck mods for this truck. Mines a 5 speed, shortbox, flareside and it only weights 4000 pounds so its not gutless off the line(chirps going into second)but more power is always nice. I was thinking about a poweraid throttle body spacer. Wouldnt this be better on a truck that had tbi? My 2000 has multiport doesnt it? Does anyone sell gear drives for the 4.2?

 

 

If you are looking for an alternative to a k&N filter... check out accel kool blue. I just picked one up from jegs... seems to be exactly the same as a k&N for about $10 less.
Matt

 

Ok.. 40 series or even the single chamber is not loud on our 4.2's. I drive my truck with no muffler at all w/ factory cats. It's still not loud enough. You'll be happy with a flowmaster although I do not recommend them. I perfer the sound of Magnaflow or Borla on our 4.2's. Even MAC mufflers sound good.

Don't waste your money on a spacer... this I'm tellin ya.

btw, My truck weighs 3,905 with me in it and I chirp 3rd hard.