Dean Martin's GT4 Mustang

Discussion in 'Shelby GT350 Mustang' started by Epiphany, Jul 13, 2017.

  1. Epiphany

    Epiphany Well-Known Member

    Vehicle(s):
    Quick
    Joined:
    Oct 11, 2015
    Location:
    Global
    Posts:
    4,218
    Likes Received:
    5,260
    0   0   0
    #1 Epiphany, Jul 13, 2017
    Last edited: Jul 13, 2017
    Multimatic learned quite a bit with the recent GT350R-C car and you can see much of it with the latest GT4 effort. I was lucky enough to have the opportunity for a pretty thorough study last weekend when Dean Martin and his Kohr Motorsport team came to Mosport up in Bowmanville, Ontario to run in the Continental Tire Sportscar Challenge. A second car being run by the Volt team was there as well. Anyway, I'll share what I can here and hope it provides some insight into just what goes into these cars. And maybe you'll decide to click and add one to your cart.:)

    https://www.kohrmotorsports.com/product/2017-ford-mustang-gt4-racecar/



    This car is a beast.

    xz%20IMG_4131.jpgThe car starts off as a body in white with a FIA-compliant roll cage and a seam welded body. The engines are done by Roush and restricted to certain class requirements. It uses a CPC crank and not a FPC. The TR3160 6 speed the GT350R-C cars used is gone and has been replaced with a Holinger sequential gearbox. An aftermarket one-piece aluminum driveshaft replaces the typical two-piece steel S550 shaft. The rear axle housing uses a Torsen differential with stock Ford axles. Brakes are all Brembo, six piston up front and four piston out back.


    Starting off with the interior cabin, these cars are all business. You can see numerous fiber pieces along with a host of safety, data acquisition, and communications equipment everywhere you look.

    xz%20IMG_4095.jpg


    xz%20IMG_4088.jpg


    xz%20IMG_4089.jpg


    xz%20IMG_4081.jpg


    xz%20IMG_4082.jpg


    xz%20IMG_4084.jpg




    The engine uses the regular GT intake manifold, ducting, and airbox. The GT350R-C car used the system from the GT350 but this car doesn't have that luxury. I believe the tubular exhaust manifolds are from the GT350 with the exhaust all custom after that.

    xz%20IMG_4031.jpg



    Dry sump oil reservoir.

    xz%20IMG_4037.jpg



    True dual exhaust system, just as God intended.

    xz%20IMG_4077.jpg


    xz%20IMG_4092.jpg




    The aforementioned Brembo brake system stops this badboy on a dime. The fronts...

    xz%20IMG_4046_1.jpg


    xz%20IMG_4047.jpg


    xz%20IMG_4048.jpg


    xz%20IMG_4050.jpg




    Rears...

    xz%20IMG_4091_1.jpg


    xz%20IMG_4054.jpg



    The Dynamic Suspesnion (Multimatic's own) DSSV 2-way coilover dampers (bump and rebound) are absolutely state of the art.

    Front...

    xz%20IMG_4045.jpg


    Atop the front struts are Multimatic's own camber plates. State of the art, they allow quick, repeatable camber changes by simply moving shims from one side to the other. Note the stitch welds on the strut tower, done via mig in ~1" beads with about an inch of space in between.

    xz%20IMG_4106.jpg


    xz%20IMG_4040.jpg


    xz%20IMG_4038.jpg


    xz%20IMG_4068.jpg


    Sorry guys, if you want these for your street going Mustang, they aren't going to work with your production style struts and suspension. Price is just under 1k per side if you want them anyway.


    Rear dampers...

    xz%20IMG_4053.jpg


    xz%20IMG_4059.jpg




    Not to be out done by the front, the rear suspension uses a pretty trick sway bar that ties into a gorgeous CNC billet aluminum lower control arm.

    xz%20IMG_4057.jpg


    xz%20IMG_4056.jpg



    The cars were using a fabricated arm which was recently upgraded to the hardware you see here.

    xz%20IMG_4061.jpg



    The Continental series require Continental tires, naturally. On nothing less than the best - Forgeline. Wheel studs and lug nuts are from MSI Racing in Mooresville, NC.

    Front...

    xz%20IMG_4044.jpg


    Rear...

    xz%20IMG_4122.jpg




    The body is a mix of stock GT350 and Multimatic fabricated carbon fiber panels. To begin with, the hood, easily the most eye catching short of the massive rear wing. This baby is all fiber.

    xz%20IMG_4063.jpg


    xz%20IMG_4062.jpg


    xz%20IMG_4064.jpg


    xz%20IMG_4108.jpg


    xz%20IMG_4103.jpg


    xz%20IMG_4096.jpg


    Hood latches are from Aerocatch.

    xz%20IMG_4101_1.jpg


    xz%20IMG_4104.jpg


    Want one?

    https://performanceparts.ford.com/part/M-16612-GT4


    The doors are not to be outdone either. Feather light with a perfect fit.

    xz%20IMG_4093.jpg


    xz%20IMG_4094.jpg



    The grill panel behind the honeycomb is from the GT350R which utilizes a slightly smaller opening than that of the non-R GT350. Front hook can be purchased from the Ford Racing catalog.

    xz%20IMG_4035.jpg


    The lower, outside fascia openings are completely blocked off behind their respective honeycomb panels. The idea is to reduce excess airflow into the engine bay and its subsequent lift. The GT4 cars don't place coolers there ala the factory GT350 anyway.

    xz%20IMG_4034.jpg



    The canards, or dive planes used up front are CF (but formerly sheet aluminum prior to homolgation) and are purely for aero, 100%.

    xz%20IMG_4032.jpg


    xz%20IMG_4051.jpg



    They attach to the fender as well as the CF splitter below.

    xz%20IMG_4033.jpg



    The splitter, yet another Multimatic custom CF piece, attaches to the body at the stock pickup points as well as via a pair of cable lanyards.

    xz%20IMG_4097.jpg



    The rear wing was optimized for drag as much as it was for downforce. It is simply gorgeous.

    xz%20IMG_4069.jpg



    Ignore the silly blue car that interrupted my all important wing documentation.

    xz%20IMG_4195.jpg




    Miscellaneous. Fuel system...

    xz%20IMG_4073.jpg


    xz%20IMG_4074.jpg



    Axle vent...

    xz%20IMG_4078.jpg




    xz%20IMG_4085.jpg


    Air jack system and safety blocks...



    xz%20IMG_4080.jpg


    xz%20IMG_4049.jpg


    xz%20IMG_4118.jpg


    I have a bit more to share but wanted to get this much up first. Dean/Kohr and Multimatic have worked very hard to make this happen. In my view they have a fantastic job with it. What do you think?
     
  2. Bcobb85

    Bcobb85 Well-Known Member

    Vehicle(s):
    GT350
    Joined:
    Jul 28, 2016
    Location:
    Houston, Texas
    Posts:
    212
    Likes Received:
    124
    0   0   0
    Nicely done detailed pics :thumbsup:
     
    jdilissio likes this.
  3. Twin Turbo

    Twin Turbo Super Moderator
    Moderator

    First Name:
    Paul
    Vehicle(s):
    Mustang '05 GT
    Joined:
    Aug 2, 2012
    Location:
    England
    Posts:
    8,373
    Likes Received:
    4,584
    0   0   0
    Brilliant photos...............gorgeous GT4. And Dean's a great guy :)
     
  4. snaproll

    snaproll Well-Known Member

    First Name:
    Bruce
    Vehicle(s):
    350R/88LX/FR500S
    Joined:
    Feb 17, 2016
    Location:
    Naples Florida
    Posts:
    378
    Likes Received:
    176
    0   0   0
  5. FlowForm_Wheels

    FlowForm_Wheels Well-Known Member

    First Name:
    HRE Wheels
    Vehicle(s):
    Mustang
    Joined:
    Jan 22, 2014
    Location:
    Vista, CA
    Posts:
    1,328
    Likes Received:
    763
    Occupation:
    Wheel Manufacturer
    0   0   0
    So awesome, thanks for posting up the photos :)
     
  6. FP350S

    FP350S Well-Known Member

    First Name:
    Robear
    Vehicle(s):
    16 TY GT350
    Joined:
    May 14, 2017
    Location:
    Decatur, Texas
    Posts:
    223
    Likes Received:
    104
    Rating:
    100%
    2   0   0
    :ford: Cool Shit...:coolphotos:
     
  7. Clink

    Clink Well-Known Member

    Vehicle(s):
    '14 Focus
    Joined:
    May 22, 2014
    Location:
    FL
    Posts:
    4,147
    Likes Received:
    1,263
    Rating:
    100%
    1   0   0
    Amazed as I kept scrolling, awesome pics thanks for sharing!
     
    machsmith likes this.
  8. HISSMAN

    HISSMAN Large Member

    Vehicle(s):
    2016 Oxford White GT/PP Premium
    Joined:
    Jun 10, 2016
    Location:
    West Virginia
    Posts:
    2,995
    Likes Received:
    1,441
    Rating:
    100%
    3   0   0
    Those camber plates are sex!
     
  9. Muligan

    Muligan ARRR!

    Vehicle(s):
    JR265 (base 920A)
    Joined:
    Dec 16, 2016
    Location:
    North Central Illinois
    Posts:
    819
    Likes Received:
    739
    0   0   0
    Great pics - lots of detail.... thanks for sharing.

    I can say from experience, that stitch welding is very labor intensive. Been doing a bunch of it lately on my '65 Mustang vintage racer.......

    IMG_20170319_150604403_zpsbjbvwa4y.jpg
     
  10. Tank

    Tank 9/11 - Never Forget

    First Name:
    Jim
    Vehicle(s):
    G0853 Never Forget
    Joined:
    Feb 19, 2016
    Location:
    New England
    Posts:
    2,554
    Likes Received:
    1,342
    0   0   0
    #10 Tank, Jul 13, 2017
    Last edited: Jul 13, 2017
    Awesome stuff [MENTION=19066]Epiphany[/MENTION] :cheers:
    Thanks for posting :thumbsup:
    Amazing access and pics!
     
  11. JT1

    JT1 Well-Known Member

    Vehicle(s):
    2017 GT350
    Joined:
    Apr 25, 2017
    Location:
    PA
    Posts:
    428
    Likes Received:
    211
    0   0   0
    Is the HP reported anywhere?
     
  12. dron_jones

    dron_jones Well-Known Member

    Vehicle(s):
    Me crazy, and I can't help myself
    Joined:
    Mar 31, 2016
    Location:
    Fell into a pot hole in Michigan and can't get bac
    Posts:
    1,182
    Likes Received:
    905
    0   0   0
    I had the good fortune of visiting their shop which is right down the road from my house about 8 weeks ago and saw the cars up on the lift..... So much want.....

    I am having Dean and team do the install of my lowering springs, camber plates and a few other small items. Very excited to have such a professional performance shop close by to do the work on my car.

    For anyone who has never talked to Dean before, couldn't be a nicer guy, never once did he make me feel unwelcome or too good to talk to me about the work on the car. It was a very refreshing experience compared to some of the other shops I have been to in the past.
     
    saleen367, CVCashmere and jdilissio like this.
  13. Demonic

    Demonic Well-Known Member

    First Name:
    Austin
    Vehicle(s):
    GT350R
    Joined:
    Feb 21, 2017
    Location:
    Boston
    Posts:
    944
    Likes Received:
    874
    0   0   0
    Weren't the first GT350R-C's using the FPC's? I could have sworn I remember reading an article about the sound being what made them easily recognizable during the Continental championship. Awesome pics, thanks. And yeah, stitch welding was always done on the BMW race cars too. It was one of those signs of someone's car having gone off the deep end into being a race car.
     
  14. FogcitySF

    FogcitySF Well-Known Member

    Vehicle(s):
    BMW E90 M3 | GT350R | Porsche 911 GT3 RS (991)
    Joined:
    Jan 28, 2017
    Location:
    San Francisco
    Posts:
    238
    Likes Received:
    168
    0   0   0
    Really awesome thread. Keep the pics and info coming!
     
  15. kart125

    kart125 Well-Known Member

    Vehicle(s):
    2017 GT350/2008 Saab TurboX SC
    Joined:
    Oct 6, 2016
    Location:
    Montreal, Qc
    Posts:
    277
    Likes Received:
    110
    Rating:
    100%
    1   0   0
    Wow it's like having access to God's shop just before he created humanity!! Nice write up as always Epiphany! If those canards are ever available I'll take a set!
     

Share This Page