Coyote Stroker Kits

Discussion in 'V8 5.0L Engine / Mods: Bolt-ons, Exhaust, Tuning' started by crimson_crowd_eater, Oct 20, 2019.

  1. crimson_crowd_eater

    crimson_crowd_eater Well-Known Member

    First Name:
    Tony
    Vehicle(s):
    2018 Mustang GT Premium
    Joined:
    Mar 26, 2019
    Location:
    Daytona Beach, FL
    Posts:
    187
    Likes Received:
    44
    Garage Profiles:
    1
    Occupation:
    Aerospace Engineering Student
    0   0   0
    I was wondering if anyone on the forum as any links to posts of people who have purchased and run one of the 344/351 Coyote Stroker kits. I can't really find what I'm looking for, but maybe someone has seen a thread or videos with dyno pulls and info.
     
  2. lemony

    lemony New Member

    Vehicle(s):
    f350
    Joined:
    Sep 11, 2017
    Location:
    us
    Posts:
    1
    Likes Received:
    0
    0   0   0
  3. OP
    OP
    crimson_crowd_eater

    crimson_crowd_eater Well-Known Member

    First Name:
    Tony
    Vehicle(s):
    2018 Mustang GT Premium
    Joined:
    Mar 26, 2019
    Location:
    Daytona Beach, FL
    Posts:
    187
    Likes Received:
    44
    Garage Profiles:
    1
    Occupation:
    Aerospace Engineering Student
    0   0   0
  4. Ebm

    Ebm Well-Known Member

    First Name:
    Guy
    Vehicle(s):
    '14 GT
    Joined:
    Nov 21, 2016
    Location:
    North Carolina
    Posts:
    2,616
    Likes Received:
    900
    0   0   0
  5. EFI

    EFI Well-Known Member

    Vehicle(s):
    5.Br0
    Joined:
    May 19, 2015
    Location:
    Boston
    Posts:
    1,627
    Likes Received:
    501
    Rating:
    100%
    2   0   0
    Well unfortunately that example is not just simply a stroker crank in a production Coyote block. That has an aftermarket sleeved block which means big $$$. Also it's a custom billet crank and billet rods, so once again big $$$.

    You should be able to save money by keeping the stock block and going with a basic H beam 6.125 rod (LS rods). But that will have to be done by a machine shop, I'm not sure RGR offers those cost saving options.
     
  6. Ebm

    Ebm Well-Known Member

    First Name:
    Guy
    Vehicle(s):
    '14 GT
    Joined:
    Nov 21, 2016
    Location:
    North Carolina
    Posts:
    2,616
    Likes Received:
    900
    0   0   0
    Gotcha,

    I'd say the average person wouldn't need a block capable of over 1000 horsepower.
     
  7. olaosunt

    olaosunt Well-Known Member

    Vehicle(s):
    Guard,base,M6,KB-2.DIB,auto,Hellion TT,2016 GT 350
    Joined:
    Jan 10, 2015
    Location:
    Indiana
    Posts:
    2,803
    Likes Received:
    720
    Rating:
    100%
    1   0   0
    crimson_crowd_eater likes this.
  8. OP
    OP
    crimson_crowd_eater

    crimson_crowd_eater Well-Known Member

    First Name:
    Tony
    Vehicle(s):
    2018 Mustang GT Premium
    Joined:
    Mar 26, 2019
    Location:
    Daytona Beach, FL
    Posts:
    187
    Likes Received:
    44
    Garage Profiles:
    1
    Occupation:
    Aerospace Engineering Student
    0   0   0
  9. Zinc03svt

    Zinc03svt Well-Known Member

    Vehicle(s):
    2018 GT shadow black, 10r80, PP
    Joined:
    Jun 3, 2018
    Location:
    USA
    Posts:
    1,655
    Likes Received:
    830
    Garage Profiles:
    1
    0   0   0
    We need a 7.0L 427 stroker gen3 coyote. ;).
     
    crimson_crowd_eater likes this.
  10. OP
    OP
    crimson_crowd_eater

    crimson_crowd_eater Well-Known Member

    First Name:
    Tony
    Vehicle(s):
    2018 Mustang GT Premium
    Joined:
    Mar 26, 2019
    Location:
    Daytona Beach, FL
    Posts:
    187
    Likes Received:
    44
    Garage Profiles:
    1
    Occupation:
    Aerospace Engineering Student
    0   0   0
    Ford should offer us a new Boss with a modern 460 Big Block!
     
    Zinc03svt likes this.
  11. TnWHTMARE

    TnWHTMARE Well-Known Member

    Vehicle(s):
    2019 CAMARO SS
    Joined:
    Oct 3, 2017
    Location:
    Knoxville
    Posts:
    372
    Likes Received:
    98
    Garage Profiles:
    1
    0   0   0
    I'm sorry sir, that money was spent on the Mach E. j/k...j/k :)
     
  12. OP
    OP
    crimson_crowd_eater

    crimson_crowd_eater Well-Known Member

    First Name:
    Tony
    Vehicle(s):
    2018 Mustang GT Premium
    Joined:
    Mar 26, 2019
    Location:
    Daytona Beach, FL
    Posts:
    187
    Likes Received:
    44
    Garage Profiles:
    1
    Occupation:
    Aerospace Engineering Student
    0   0   0
    But... But... Big block :crying:
     
  13. CrashOverride

    CrashOverride Well-Known Member

    Vehicle(s):
    2015 Mustang GT
    Joined:
    Aug 18, 2018
    Location:
    West Coast
    Posts:
    493
    Likes Received:
    264
    0   0   0
    That's a cool deal, but if you look at it, just going over bore alone gives you 0.2L. Even cheaper to make yourself a 5.2L Cross Plane Coyote. Plus overboring is easier on the rotating assembly than stroking.
     
    MeLurkYouLongTime likes this.
  14. olaosunt

    olaosunt Well-Known Member

    Vehicle(s):
    Guard,base,M6,KB-2.DIB,auto,Hellion TT,2016 GT 350
    Joined:
    Jan 10, 2015
    Location:
    Indiana
    Posts:
    2,803
    Likes Received:
    720
    Rating:
    100%
    1   0   0
    Yeah .
    I spoke with 3 different engine builders (not MMR of course) and 2 of them discouraged it . There concern was clearance issues and “ how much the piston skirt comes out of the bore on bottom dead center “— Greek to me but they are the experts .lol
    Another builder had done a few but said the rotating assembly needs some “serious balancing”.
     
    MeLurkYouLongTime likes this.
  15. CrashOverride

    CrashOverride Well-Known Member

    Vehicle(s):
    2015 Mustang GT
    Joined:
    Aug 18, 2018
    Location:
    West Coast
    Posts:
    493
    Likes Received:
    264
    0   0   0
    That's really the one bad thing about the Mod motor in general - they are already "stroked". Ford had to do it to remain competitive with GM, but at the same time digging their heels, refusing to retool Romeo to accommodate a larger bore center. Larger bore = larger valves. Longer stroke really puts the hurtin' on everything because it drastically changes the acceleration of the piston. Plus, it throws off the rod to stroke ratio, and scuffs the crap put of the cylinder sides and pistons. To fix that, you gotta run a deeper skirt, which makes the piston heavier and more friction, and like you said, you basically get to the point where the piston almost falls out of the cylinder.

    The LS7 (Corvette Z06 // 427 // 7.0L) had this exact problem. GM fixed the problem by lengthening the cylinder sleeves. It's a hack, yet worked quite well. Depending on the block geometry, it might technically be possible on a coyote, but by the time you do all that, you might as well just buy a racing block with a taller deck allowing you do to it right. I'm not sure why the balancing would be difficult other than the pistons or crank were lousy on the tolerances -- but I'm not an assembler, so I'm speaking as an internet quarterback does LOL.

    Although I am not convinced Ford is willing to do a complete redesign of the coyote (electrification trumps everything right now) but if they did, it would be in their best interest to increase the bore centers. No other change (Short of using a better quality oil pump gear) will improve it more.

    I'm an engine guy, I typically buy an engine and happen to get whatever car it's packaged in. I love the sound of the coyote and that it revs sky high over the LT1, and that's why I bought my mustang.

    I found this blog post by JE Pistons which will help explain the "greek" for you :)
     
    MeLurkYouLongTime and olaosunt like this.
Loading...

Share This Page