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Where should I get a new (rebuilt) 4R100?

Discussion in '2nd Generation' started by walt460, Feb 12, 2019.

  1. walt460

    walt460 SN95 Judge Established Member

    Messages:
    243
    Joined:
    Feb 1, 2010
    Location:
    Boulder City, NV
    I am finally going to do some updates/improvements to my 162K mile 2001 Lightning. I am going to install a used engine I bought a while back, it has nearly 100K miles but it has Trickflow heads with only 2K miles on them. (This is a good running motor, well maintained, from a buddies HD truck that was attacked by a large pole that distroyed his truck from the B pillar back.)

    Since I am changing the engine, and my trans is getting tired, I want to install a new (rebuilt) trans. But, where to get one?

    The HD motor with the Trickflow heads and stock cams made 405Hp and 474 ft-lbs at Powertrain Dynamics in Huntington Beach, CA after being tuned. It has a 2.7 blower pulley and stock lower pulley, ported blower, and larger injectors. I will be going back to a stock blower pulley and stock injectors and detuning as I use my truck for towing. Power will be more like 360Hp and 410 ft-lbs. (My truck was tuned by Paul's HP in Jackson, MI and made 323HP and 363 Ft-lbs when it had 101K miles on it.)

    So, given all the above and knowing I want durability and reliability for towing, where do I get a 4R100 to meet my needs without spending a fortune?

    Thanks, all advise will be appreciated.

    Walt
     
  2. GAGT1

    GAGT1 New Member

    Messages:
    3
    Joined:
    Nov 14, 2018
    Location:
    Roc, NY
    New here and to the game but from what I understand, you run the R100 until it dies. It is rated for more power than you make and will make. Stick a valve body in it and enjoy.
     
  3. SID297

    SID297 OWNER/ADMIN Staff Member Administrator

    Messages:
    48,547
    Joined:
    Mar 27, 2003
    Location:
    Myrtle Beach, SC
    At that power level you'll be fine.
     
  4. walt460

    walt460 SN95 Judge Established Member

    Messages:
    243
    Joined:
    Feb 1, 2010
    Location:
    Boulder City, NV
    Well, what I have found is that, well, opinions vary.

    First, I found that Ford Dealers no longer serv.ice any 4R100s for Lightnings. So no chance to get a new or FoMoCo authorized rebuild via the Ford Dealer.

    Next, I checked all the normal sources like auto parts stores and local trans builders and even Jasper. All these either lump the Lightning trans into all the other 4R100 applications or don't service the Lightning. Jasper does have a listing for the Lightning and HD Supercharged packages, but if you check their recent feedback with consumer groups, their are a lot of complaints with failures early and/or just after warranty ends. Local trans builders either did not want to touch it or wanted to do an exchange with a national rebuilder. In most all options there is only a 2-year warranty and only if the shop installs the trans.

    Next I started checking on-line sites for the 7.3L Diesel, and there I quickly found a lot of recommendations for BTS ( Brian's Truck Shop, in Lead Hill AR). So I started checking into his transmissions and clearly he can provide a trans that has capabilities way in excess of my needs, but that will likely last longer than I will.

    So, I called BTS and arranged to get into line for one of his 4R100 builds, which he custom calibrates to match your truck and how you use it. I also found that he works with my tuner, so now the plan is to set my truck up for about 375 HP and 450 ft-lbs and still be safe for towing and use of 91 octane fuel (all we get out West).

    Now I am considering a future move to a JL short block........
     
  5. Dusten

    Dusten Well-Known Member Established Member

    Messages:
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    Joined:
    Jan 20, 2006
    Location:
    Marysville, Wa
    Give a1 a call. Trust me.

    A1 Transmission of Ga Inc
     
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  6. ViperRed91GT

    ViperRed91GT Lightning Guru Established Member

    Messages:
    892
    Joined:
    Nov 9, 2006
    Location:
    Moore, OK
    Agreed. Stock is fine, it’s been proven. Hell, you’re barely above stock power. You seem steadfast on building it, and that’s fine too. A1 should’ve been your call
     
  7. walt460

    walt460 SN95 Judge Established Member

    Messages:
    243
    Joined:
    Feb 1, 2010
    Location:
    Boulder City, NV
    Thanks,

    I wish I would have known about A1 sooner. Never heard of then until your posts. I had to decide and order due to timing of my trucks build. BTS trans should arrive Monday.
     
  8. Lightningman33

    Lightningman33 New Member

    Messages:
    2
    Joined:
    Sep 4, 2019
    Location:
    Sacramento
    I have a built 4r100 I can let go for 1000
     
  9. Dusten

    Dusten Well-Known Member Established Member

    Messages:
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    Joined:
    Jan 20, 2006
    Location:
    Marysville, Wa
    I know this is way late, but Brian will not steer you wrong. His trans are beasts
     
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