Flowmaster exhaust
 

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I have a 97 GMC Sierra K1500 with a 5.7 Litre.
I just bought a dual cat-back kit from Flowmaster (#17187) and am just about to install it. I am concerned because it comes with a 70 series Big Block 2 muffler, which is Flowmaster's quietest muffler!
I want to hear my new exhaust!... Will I be satisfied with this kit?
Any opionions are greatly appreciated.I posted this in the GMC sierra forms, thought I'd get your opinions too!

RE: Flowmaster exhaust
 

It will be quieter than the 40 series, but I still think will sound OK. Try going to the flowmaster site and listen to the sound clips.

RE: Flowmaster exhaust
 

I had the 70 series on my 99 z71 and i liked them better than the 40 series that i now have on my 02 z71.The 40 series to me have to much "in cab noise".

RE: Flowmaster exhaust
 

I had the 40s on my 93 z-71 and it was only loud in the cab under heavy accelleration. Just cruizing it was not bad at all.

RE: Flowmaster exhaust
 

70 series should do just fine. 40 series is the loudest no doubt.I had two 40 series on my 95 Z-71 with hooker headers and no cats. It was so damn loud it would wake the dead! I loved it!!

RE: Flowmaster exhaust
 

Hey thanks guys.
I installed it on Friday, and I love it! It's loud when I want it to be, and sounds nice and quiet on the highway.
I was worried that it wouldn't be loud enough, but I am happy. 40 series must be awsome loud, cause this 70 kit sounds sweet too!

RE: Flowmaster exhaust
 

I'm glad it worked out for ya bro! Enjoy your new exhaust and goose it a little when you pass those ricers!;)