The
Flowmaster American Thunder Cat-Back Exhaust would be an awesome choice for the '87 to
'93 LX Fox owners and all '86 GT owners who want one of the most iconic and popular systems
ever created for the original 5 liter Mustang.
Now, the American Thunder will provide you with plenty of bark through the Super 44 series
mufflers and will combine aluminized steel and stainless steel for around that mid-$400
price point.
Your installation will involve some minor cutting with these older Fox Bodies, of course,
but still should be pretty straightforward overall, so let's go strong one out of three
wrenches on the difficulty meter with a little bit more detail coming in the video.
So, I think I'm not alone in saying that the Fox Body should have come from Ford with a
set of two-chambers from Flowmaster pre-installed as it just sounds so damn good.
In fact, I'd even go a step further and say that there might not be a more recognizable
sound out there in the Mustang world.
You could line up 100 cars and blindfold me, and I can easily pick out the Fox Body with
the Flowmaster combination.
It's just that recognizable.
But enough about all of that, let's get into the system we have here on the table and talk
about it a little further.
And, as you guys heard with our sound clips, the American Thunder is certainly going to
wake up that pushrod five liter so much so that I'm willing to go strong three out of
five here, maybe even soft four out of five, on my patented one to five or one to wake
the neighbors scale.
That really is no surprise, seeing as though Flowmaster calls the Super 44 series muffler
here their most aggressive and best performing 2-chamber muffler in their lineup, thanks
to that patented Delta Flow technology.
So, we know that the Super 44 here is a 2-chamber muffler, but I do also wanna point out that
it features a series of internal metal baffling, which will help shape the sound, of course,
but it's also gonna help shape the flow without hurting, or without the risk, I should say,
of blowing out or changing over the years like maybe some other internally packed muffler
might.
Listen, that's the way they've done it ever since the beginning, and I've no reason to
believe that Flowmaster's gonna change up their method anytime soon.
Now, as I pointed out earlier in the video, you are gonna be receiving a combination of
materials here with the Flowmaster, a bulk of which will be aluminized steel for the
mufflers themselves, in addition to that two and a half inch mandrel-bent tubing.
The stainless steel can be found solely right here with the tip section, about 25 inch long,
two and a half inch also in diameter, and then polished to this brilliant shine, etched
with that Flowmaster logo.
Finally guys, Flowmaster does apply their signature black paint to the aluminized steel
Super 44 series mufflers which should help reduce any corrosion over the years, but nevertheless,
if you should run into any issues with their system, Flowmaster does have your back with
their 3-year limited warranty.
But now, let's get into the installation a little bit more, and, on the surface guys,
again, you're looking at a strong one out of three wrenches on the difficulty meter
due to the small amount of cutting.
And to help walk you through that a little bit further, here is one our AM installers.
After you have raised the vehicle, the first step is gonna be to cut the tailpipes to make
removal easier.
Next, using some WD-40, we're gonna remove the hanger off of the rubber mount.
Next, using a 14 millimeter and an impact gun, we're gonna remove the mufflers from
the factory H-pipe.
Next, we wanna remove the hangers at the muffler.
We can start installation by mocking up the muffler.
And we're gonna use the factory rubber hangers to mount our new mufflers, and we're gonna
put these on hand-tight until we're all the way finished.
Start these bolts hand-tight, and we're gonna slide our muffler into the factory rubber
hanger.
Next, we're gonna install the tailpipe.
Put our clamp over the muffler, go over the axle, and pop this guy in the hanger back
here first.
So, working from back to front, we wanna position the exhaust so it doesn't hit anything, doesn't
hit the axle, and we're gonna start off by tightening up this clamp right here.
Next, we're gonna tighten up the cat-back to muffler section.
We're gonna use a 14 millimeter with a universal and an extension to tighten this up.
After you finish tightening everything up, your installation is complete.
Wrapping this one up, if you're looking for one of the best combos in the Mustang world,
the two-chamber and the five liter Fox Body, be sure to check out the American Thunder
right here at americanmuscle.com.