FJ40 With 37's

Discussion in '40- & 55-Series Tech' started by rantoy2, Dec 12, 2005.

  1. rantoy2

    rantoy2

    Messages:
    25
    Location:
    Arizona
    Would like to know what engine, axles, springs, you are using while running on 37 inch tires. Using a sway bar? How much did you have to trim the body? Also would like to see pics of your 40 with 37's. I would like to run 37's on my 40 but want to get informed first.
  2. Mace

    Mace rock scientist.. Staff Member s-Moderator

    Messages:
    18,076
    Location:
    Las Vegas
    stock everything, no sway bar.
    Springover.

    Body cutting a must.
  3. CruisinGA

    CruisinGA

    Messages:
    6,152
    Location:
    Georgia Tech
    SUA with 4" lift running 38.5" SX's.

    Rear is trimmed up as high as possible, and as far back while keeping the bottom radius. Rear springs are flipped.

    Will likely have to remove the front fenders until I get a set of tube fenders installed...

    Sm420 for gearing, full chr0-moly front axle.
    Rear axle stock, needs some chromoly shafts from polyperformance.com

    My setup is untested, just picked up the 38's.

    A friend is running a 2" body lift and 4" SUA lift with 37" MTR's. All he had to do was lengthen the rear wheel well. (also has flipped springs).
    Last edited: Dec 12, 2005
  4. andrewfarmer

    andrewfarmer

    Messages:
    800
    Location:
    Wellington, NZ
    all stock (ish) except springs.
    you'll need 2" bs rims to clear the inner tubs at rear.
    See my ROTW thread for pics, more details on springs etc
  5. 66fj40x2

    66fj40x2

    Messages:
    3,970
    Location:
    Montgomery Co. TEXAS
    I run 37" MTR's on the street and 38.5 SX's on the trail.

    2F, SM420, 3 spd case, 4" BDS SUA, '78 front axle, '77 rear and it took me a year to break an axle with these heavy SOB's. Friday I'll order the new Poly Performance rear axles and if the wife hasn't killed me by the 30th I'm ordering Long's 27 spline chromo's for the front. My front springs are flipped so the fenders really must be cut. You'll need to cut the back too, but you can put a TJ flare on it and it looks good.
    mike2.JPG punisher13small.JPG
  6. CruisinGA

    CruisinGA

    Messages:
    6,152
    Location:
    Georgia Tech
    Mike- I was not planning on flipping my front springs "yet." Do you think its possible to run the 38.5's without doing it? Or should I just go ahead and work at getting them flipped without trying it?
  7. 66fj40x2

    66fj40x2

    Messages:
    3,970
    Location:
    Montgomery Co. TEXAS
    I flipped the springs for better approach angle and slightly longer wheel base. It actually forced me to cut the fenders more on the front because of the tire location. I really like having the axle moved forward. Besides .......







    It's only sheet metal:D
  8. rantoy2

    rantoy2

    Messages:
    25
    Location:
    Arizona
    Does anyone recommend a SR with a SUA?
  9. mudnyreye

    mudnyreye Walkin' thru raindrops SILVER Star

    Messages:
    404
    Location:
    Atlanta, GA
    SUA with Shackle Reversal, 4" Softrides 1-1/2"o.s. shackles front/2-1/2" o.s. shackles rear. 1" body lift. Running 36-13.50 Iroks (36.9") on 9" wagons with 1-1/2" wheel spacers No rubbin.
  10. treerootCO

    treerootCO Where are my keys?! SILVER Star

    Messages:
    3,198
    Location:
    Wheat Ridge CO
    Last edited: Dec 13, 2005
  11. treerootCO

    treerootCO Where are my keys?! SILVER Star

    Messages:
    3,198
    Location:
    Wheat Ridge CO
    the fronts will rub (SR will help). I have metal-tech fenders in the garage, just need to weld them up.
    IMG_1698.JPG

  12. 71-CRUISER

    71-CRUISER Supporting Vendor

    Messages:
    1,745
    Location:
    Atlanta, GA
    Mine is a 71 w/ a 351w and a NP435 and 3 speed case. SOA front, shackle reversal w/ stock 40 springs that have the short side forward (flipped). Chromo front axles w/ Aussie locker. The rear springs are flipped with a welded stock 3rd w/ stock axles. I moved my front fenders up about 4 inches and forward about as much. The rear is trimed up as far as I could go without raising the wheel wells. 2" BS wheels 15x10 to keep the tires out of the inner wheel well. I am curently runing 36x14.50s but I am going to get some 38.5 SXs or some 37" PitBulls in the neer future.

    I have beat on it a few times out with absolutly no problems.



    Can you say poser shot? These are the only current pictures that I have on this computer.
    DSC00366_small.JPG DSC00273.JPG
  13. 74fj40

    74fj40

    Messages:
    2,197
    Location:
    Littleton, Colorado
    thats neat, when you gonna do soa on the rear?
  14. 71-CRUISER

    71-CRUISER Supporting Vendor

    Messages:
    1,745
    Location:
    Atlanta, GA
    As soon as I have a place to work on my truck and the time to make a wrap bar. I have 5" Alcans in the rear now so they flex pretty well but I am going to do the rear SOA as soon as I gat a chance.
  15. tomsryd

    tomsryd SILVER Star

    Messages:
    151
    Location:
    Hanford,Ca.
    37 mtr's , trailready beadlocks w/2 inch back spacing, cruiser axles soa'ed w/ ringless Longfields, alcan centered springs w/ anti wrap leaves 1 inch taller than stock.....Had to trim a little off the rear quarter panel to center the tire in the wheel well using TJ flares..........Barely touched the front fenders at full stuff with 35's.......Had to add bump stops to keep the 37's from hitting :D .....



    Top shot at gatekeeper w/37's

    Bottom at Calico w/35's
    RUBICON 05 0011.jpg album_pic.jpg

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