swapping the GT350 rear valance onto my GT Premium

Discussion in 'V8 5.0L Engine / Mods: Bolt-ons, Exhaust, Tuning' started by Mustangpaul05, Aug 29, 2019.

  1. Mustangpaul05

    Mustangpaul05 Member

    First Name:
    Paul
    Vehicle(s):
    17GT PP/ 04 cobra / 86 GT
    Joined:
    Aug 28, 2019
    Location:
    New York
    Posts:
    19
    Likes Received:
    7
    Occupation:
    Dayjob + Ebay seller
    0   0   0
    Hi - I have the GT350 rear valance on order. It has the fake tips in it. I am planning to put it on my 17 GT Premium.

    Any suggestions on an exhaust that will install nicely that is not too aggressive sounding? I am not into the overly loud mustangs (unless they're older)

    Anything to watch out for on the install?

    Should I get this part to compliment it:
    https://www.ebay.com/itm/2016-2017-...e=STRK:MEBIDX:IT&_trksid=p2060353.m1438.l2649


    hoping I can get some tips and advice here. Thank you to all who are kind enough to lend a hand.
     
  2. Rocketman

    Rocketman Keep it stupid, stupid

    Vehicle(s):
    2017 GT PPPPPPP
    Joined:
    Jun 13, 2017
    Location:
    Texas
    Posts:
    226
    Likes Received:
    97
    0   0   0
    I installed the GT350 valence with the Borla Sport exhaust onto my 17 GT Premium and it took about 2 hours on a lift. The scariest part is just having to saw off the bumper insert but it's not as bad as it sounds.
     
  3. OP
    OP
    Mustangpaul05

    Mustangpaul05 Member

    First Name:
    Paul
    Vehicle(s):
    17GT PP/ 04 cobra / 86 GT
    Joined:
    Aug 28, 2019
    Location:
    New York
    Posts:
    19
    Likes Received:
    7
    Occupation:
    Dayjob + Ebay seller
    0   0   0
    It actually sounds horrifying to cut up the original part lol. Any chance you have a picture of how it came out?
     
  4. Boston23

    Boston23 Well-Known Member

    First Name:
    Bruce
    Vehicle(s):
    2017 GT PPP Ingot Silver
    Joined:
    Jun 16, 2015
    Location:
    South Carolina
    Posts:
    522
    Likes Received:
    461
    Rating:
    100%
    2   0   0
    #4 Boston23, Aug 29, 2019
    Last edited: Aug 29, 2019
    The Ebay part that you linked is for the GT350 close out panel. It’s a bit beat up but it will be under the car so you won’t see it. That said, it will only work with the OEM GT350 rear valance. Not sure it will work with aftermarket GT350 valances without modifications. As for the big question, I believe Borla sells both an axle back and catback but both units come with the valance as a kit and not sold separately. Corsa sells a catback for the actual 350 which lines up with the valance but doesn’t fit the GT. I don’t think there is anything off the shelf that will line up with built in tips but I’d be interested if you do find something. Other members in your situation have fabricated the tips on the muffler to align with the valance which may include modifying the hanger. It’s trial an error but can be done.
     
    Mustangpaul05 likes this.
  5. 17Magnetic5.0

    17Magnetic5.0 Well-Known Member

    Vehicle(s):
    2017 premium mustang gt black accent package
    Joined:
    Oct 11, 2018
    Location:
    Florida
    Posts:
    311
    Likes Received:
    125
    0   0   0
    There’s this

    https://performanceparts.ford.com/part/M-5200-M8

    It’ll line up with the tips on the balance but I’m not sure they sell the exhaust separate from the balance. Maybe you can return yours and buy this one? Probably a good option for you since you can either have it be loud or close a tip and have it be quieter. Downside is that’s it’s expensive.
     
  6. OP
    OP
    Mustangpaul05

    Mustangpaul05 Member

    First Name:
    Paul
    Vehicle(s):
    17GT PP/ 04 cobra / 86 GT
    Joined:
    Aug 28, 2019
    Location:
    New York
    Posts:
    19
    Likes Received:
    7
    Occupation:
    Dayjob + Ebay seller
    0   0   0
    #6 Mustangpaul05, Aug 30, 2019
    Last edited: Aug 30, 2019
    Thank you for all this intel! if I got stock mufflers from a GT350 - do you think they would fit the GT? I see someone has them on eBay for like 350. I would probably be happy with that since I don't want this car too loud.

    Does the close out panel do anything? I am going to google it now..but I'd like your opinion also.
     
  7. OP
    OP
    Mustangpaul05

    Mustangpaul05 Member

    First Name:
    Paul
    Vehicle(s):
    17GT PP/ 04 cobra / 86 GT
    Joined:
    Aug 28, 2019
    Location:
    New York
    Posts:
    19
    Likes Received:
    7
    Occupation:
    Dayjob + Ebay seller
    0   0   0
    I’m actually getting a valance off a gt350 part-out so finding the separate exhaust is on me. I got it for like 160 shipped (damn shipping from Texas to New York!!!) so I have some wiggle room on exhaust
     
  8. jkartchner10

    jkartchner10 Well-Known Member

    First Name:
    Jacob
    Vehicle(s):
    Ruby Red GT Premium PP
    Joined:
    Oct 16, 2017
    Location:
    Atlanta, GA
    Posts:
    85
    Likes Received:
    48
    Garage Profiles:
    1
    Rating:
    100%
    1   0   0
    I installed the GT350 rear valence and removed the fake tips.

    Purchased an "AWE Touring Edition Cat-back Exhaust for 15-17 S550 Mustang GT - Quad Outlet - Diamond Black Tips (GT350 Valance)" directly from them and it fits perfectly and sounds great with no drone.

    I'll try and upload some photos this weekend for you.
     
    Mustang Tony likes this.
  9. Boston23

    Boston23 Well-Known Member

    First Name:
    Bruce
    Vehicle(s):
    2017 GT PPP Ingot Silver
    Joined:
    Jun 16, 2015
    Location:
    South Carolina
    Posts:
    522
    Likes Received:
    461
    Rating:
    100%
    2   0   0
     
  10. Boston23

    Boston23 Well-Known Member

    First Name:
    Bruce
    Vehicle(s):
    2017 GT PPP Ingot Silver
    Joined:
    Jun 16, 2015
    Location:
    South Carolina
    Posts:
    522
    Likes Received:
    461
    Rating:
    100%
    2   0   0
    The close out panel is for air flow under the GT350. No real added benefit other than keeping gravel and road debris out of your rear bumper and the lower valance. As for the GT350 mufflers, the piping size is different between the two cars so the muffler from the GT350 would need to be stepped down before welding to your mid pipe. In addition the motors on the GT350 mufflers wouldn’t function. Also not sure what the Exhaust note would be as it was designed for the Voodoo motor and not the Coyote. I’ve googled it and haven’t found any one that’s done a muffler swap or full catback swap from the 350 to the GT. There is a thread on the forum of a member that modified mufflers from the older GT500 to fit the GT350 valance. Not sure it’s worth the effort to fab GT350 mufflers with all the unknowns, especially what it would sound like even if you could mate it up.
     
  11. GEBRONI

    GEBRONI Well-Known Member

    First Name:
    Jacob
    Vehicle(s):
    2017 Mustang GT
    Joined:
    Jan 13, 2019
    Location:
    Florida
    Posts:
    130
    Likes Received:
    86
    Garage Profiles:
    1
    0   0   0
    what do you mean saw off bumper insert? I have Borla Touring catback which are single exhaust tip.. did you keep the single exhaust tip or y pipe for exhaust tip inlet on the valance?
     
  12. Rocketman

    Rocketman Keep it stupid, stupid

    Vehicle(s):
    2017 GT PPPPPPP
    Joined:
    Jun 13, 2017
    Location:
    Texas
    Posts:
    226
    Likes Received:
    97
    0   0   0
    Premium package Mustangs have a middle piece in the bumper that needs to be removed for the GT350 valence.

    I got the whole package so it has the quad tip exhaust. So I have the exact same setup as a GT350 exhaust.
     
    GEBRONI likes this.
  13. GEBRONI

    GEBRONI Well-Known Member

    First Name:
    Jacob
    Vehicle(s):
    2017 Mustang GT
    Joined:
    Jan 13, 2019
    Location:
    Florida
    Posts:
    130
    Likes Received:
    86
    Garage Profiles:
    1
    0   0   0
    Gotcha, makes sense. I ended up getting this sweet deal for $1k since I have a base bumper. Now trying to figure out what tips I need to replace the ones on my Borla Touring. Not sure is just y pipe or tips to remove the ones on the valance. Screenshot_20190926-230129~2.png Screenshot_20190926-230110~2.png
     
    Mustangpaul05 likes this.
  14. OP
    OP
    Mustangpaul05

    Mustangpaul05 Member

    First Name:
    Paul
    Vehicle(s):
    17GT PP/ 04 cobra / 86 GT
    Joined:
    Aug 28, 2019
    Location:
    New York
    Posts:
    19
    Likes Received:
    7
    Occupation:
    Dayjob + Ebay seller
    0   0   0
    I haven't got around to putting mine in yet :( so many mustang projects. I got the 350 mufflers also, so I have to figure out a rig to make them open and close without the stock switch. It doesn't seem like rocket science, just reversing polarities. Good luck with the swap! And I hope the blacks match up well..such a tricky color (but aren't they all in a way)
     
    GEBRONI likes this.
  15. Silveryote

    Silveryote Active Member

    First Name:
    Randy
    Vehicle(s):
    2015 GT Premium
    Joined:
    Oct 14, 2017
    Location:
    Hiram,GA
    Posts:
    36
    Likes Received:
    71
    0   0   0
    I recently bought a nice used Oem GT 350 lower valance and installed it on. My GT. Yep I had to cut the painted lower section out of my GT premium bumper. It was simple. I did not use the fake exhaust tip bezels from the gt 350 valance. I already had Roush Axel backs with clamp on single tips on my '15. I searched and found a pair of clamp on quad tips on eBay that were actually for a Subaru but the perfect sizes I needed. I had to cut some of the length off of the fronts of the tips where they contact the muffler's because they ended up a tad too long once installed. I clamped them on and presto it worked out with the Gt350 valance. IMG_20190914_134525732_HDR.jpg
     
    GEBRONI likes this.
Loading...

Share This Page