Mac exhaust ?

[MY 85 GT]

Im getting ready to have Mac long tubes...Mac H-pipe no cats....And Mac cat Back,...will it be loud? how does it sound....how much power will i see with doing this over my stock exhaust thats on my 85 now?

 

[DemonGT]

it will likely take a week or so to break in..once it breaks in it will be fairly loud....cruising speed shouldnt be bad but once you steap it down she will yell pretty good....here are a couple vids..one is my 91 and the other is my 89..both have mac exhaust

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[Ike83]

Im getting ready to have Mac long tubes...Mac H-pipe no cats....And Mac cat Back,...will it be loud? how does it sound....how much power will i see with doing this over my stock exhaust thats on my 85 now?

I'm guessing probably about 35-40% louder.

 

[85_SS_302_Coupe]

If you get MAC i would get it with an X pipe and run them with full tail pipes..they sound SOOOo good that way. I ran'em for a long time and got bored and traded them off, i wish i would've kept'em. They especially sound good if you've got a nice cam.

Right now i've got Magnaflow and they sound pretty awesome too.

 

[Deleted member 87397]

It will definitely be loud. Just make sure those long tubes are single flange and not individual flanges on the primaries The ones with individual flanges warp like a mother and will usually not go back on right if you have to take them off for some reason. Individual flanges FTL.

 

[85_SS_302_Coupe]

Here's my buddy's 347 with all MAC exhaust all the way back:

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[damystikal69]

I have BBK long tubes, BBK shorty H-pipe and Mac pro dumps and it sounds awesome. You can carry on a normal conversation instead of a yelling match.

 

[85_SS_302_Coupe]

I have BBK long tubes, BBK shorty H-pipe and Mac pro dumps and it sounds awesome. You can carry on a normal conversation instead of a yelling match.

That's what i love about these Magnaflows i'm running right now. Even with no dumps and no tail pipes, just open exits they're quieter at idle than anything i've ever ran, but when you step into it they scream and have a really nice "serious but not obnoxious" sound to them. No drone at all on the highway either and i can talk at a normal level and even hear my cell ringing

 

[DemonGT]

the blue car has 1 3/4 long tubes with three inch mac pro chamber and three inch catback

red car has bbk shorties with bbk off road h and 2 1/2 mac catback

 

[MY 85 GT]

Thanks guys im at work so i cant listen to them hear when i get home i'll listen to them...thanks for the replys...Right now i have a bone stock 85 and its so damn quiet...i cant stand it ...plus im sure going to a full length header and H-pipe and a full cat back im surei should see some HP gains too....I hope it sounds awesome...I love they way 5.0's sound so im guessing it will sound awesome.....