2013-2014 Shelby GT500- Bolt On Build Ups: Stage 3

In the 3rd Stage of our GT500 Bolt-On Build-Up, we installed:

Ford Racing Super Cobra Jet Oval Throttle Body - (07-14 GT500)

Stainless Works Off-Road X-Pipe - (07-14 GT500)

Kooks Performance Axle-Back Exhaust w/ Quad Tips - (13-14 GT500)

In the third stage of our 2013 and 2014 Shelby GT500 Ford Mustang build we wanted to help our GT500's Exhaust flow better so removed the cats. In place we used the Stainless Works 2 3/4 X pipe installed eliminating the factory cats to help the exhaust flow more effiiciently. We ditched the factory GT500 Axle-Back in place for the Kooks Performance Quad-Tip Axle-Back with their 3" Oval Race Muffler and dual 4" Polished Tips for that signature GT500 look. With the Stainless Works X pipe and Kooks Axle-Back Exhaust installed we created a truly unique and aggressive sound that will make your GT500 stand out from the pack! Lastly we had Ford Racing's Super Cobra Jet Oval Throttle Body installed. Upgrading the throttle body allowed us to get rid of the OEM bottle neck design and force some air into our 5.8l Trinity motor resulting in some great gains! With the newly installed mods in place we were able to put down an explosive 709 horsepower and 727 pound feet of torque, giving us a peak gain of 52 horsepower over our Stage 2 Results, and gains of 65 horsepower and 57 pound feet of torque throughout the curve!

COMMENT below and let us know what you think we should do next for our 2013-2014 Ford Mustang Shelby GT500 build...

[joehutchens]

I think one thing missing from these bolt on build ups would be a before and after 1/4 mile run, that would be really awesome.

[mclovinn]

who else smiled when you heard the exhaust

[julianroberts]

Hey guys i think it would be really cool if you guys did a build up on an older stang such as a 65' or something around there. Maybe do an engine sway with a modern  5.0 or somethin like that. love the videos and your products.

[RobertKohut]

Nice build.
My 13 GT loves you guys too!!

[lopezzcl]

You guys should do a mach 1 ! That would be sick !

[americanmuscle]

Over 700HP at the wheels thanks to our friends at Bama Performance!  #shelby #shelbygt500 #ford #mustang  

[kurtminault]

Found these videos by accident and am currently looking at a low kilometer, 10, 000 kms (canadian car) 2014 GT500 and will definitely buy these upgrades if I can buy that car.. the sound is AMAZING and the numbers don't lie... good job American Muscle keep up the good work!!

[NZQ]

It's Sick as hell man. You have to go the drag strip and do some 0-60.

[bjornbhGN]

Great share! Combine Stages 1, 2 and 3 and you're looking at just over 3K and that is huge! I think the only thing I would do different is the exhaust setup. I like the sound made by the Shelby 1000. Of course a lot more is done to that engine internally to help with its sound but the exhaust note from it's setup is unparalleled so I would try to replicate it initially with the same setup exhaust wise to start.

[nateonfireball]

Seems like great gains! Couple of questions. A lot of people were wondering where the Long tubes were and I agree, especially if you’re deleting cats anyways. Is there notable power over these parts going with headers? Also I noticed on the graphs that you guys weren’t taking advantage of the 7k rpm in this stage 3 kit. Was the computer cutting it out? Thanks and I love you guys’ content.

[barbcoleman]

I am a huge Mustang fan, and also a big fan of Carroll Shelby. In 2014, there is no doubt that these pony cars were the cheapest muscle cars to buy and modify. Closest bang for the buck competitor was the base Chevrolet corvette. Those were about equally priced, a tad cheaper, but the engines were not designed to produce huge power stock. Those cars typically could handle 650hp safely boosted, I believe it was up to 6.5psi. This Shelby was definitely cooler, more advanced, offers a backseat, and is more iconic than a mass produced baseline corvette.

[ThePismoPat]

not bad about 2k in parts maybe another 1k on install and tune/dyno

700 daily rear HP for less than 60k is amazing

[tripwire]

Saying that exhaust note sounds evil was the understatement of the year. I wet myself listening to it. Oh my god.

[TexasGTO]

Whelp... Me and my GTO are impressed...

[jaredp]

not even gunna lie, that exhaust sounded fucking gorgeous, 100% perfect if u ask me..

[billmeyers]

Question is how much did it cost for that 160 + horsepower upgrade?

[agencyheadquartersdc]

more then hellcat just with few bolt ons

[cesar]

now time to make a video to show what that car can put down at the track. I SO want a GT500 BAD!

[davewhitegt]

It's an awesome car, but desperately needs cams. Look at the drop off after 6k. If you can keep that power up to 6500, watch the E.T.s drop substantially. It's still a nice package you guys have though.

[texasgogetter]

What stage would the whip ole super charger kit be if added to this stage three set up. I'd love to see you do a video adding this kit and other parts needed to run it. Love the videos. I have a 2013 gt 500. Based on these mods U won't have to spend $40, 000 sending my car to Shelby for a supersnake conversion. Looks like if save a lot just adding your parts from the site. Please let me know. Sweet upgrades on this video too.