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  •  » AOD

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    11/14/2024 7:33 AM  #1

    Brents65
    I FYI 24-7

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    From: Upstate NY
    Registered: 7/22/2013
    Posts: 512

    AOD

    Well, it’s apart and I’m still going down the rabbit hole so why not switch to an overdrive trans? I see Summit and Jegs have AOD trans for about $1800. What would be a good torque converter stall speed for my set up? I’m not looking to pull the front tires off the ground necessarily but do want some performance. Thank you in advance for your advice!

    65 mustang coupe, 351W, C6-  2800 stall, B&M blower, 9inch- trac-loc 3.70 gears
     

    11/14/2024 7:40 AM  #2

    Bullet Bob
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    From: Montrose, Colorado
    Registered: 4/01/2013
    Posts: 4,861

    Re: AOD

    I ran a 2800 in mine for years.  Mostly stock 5.0, 3.55 gears, didn't find it to be weird in any way. 

    BB
     

    "you get what you pay for, good work isn't cheap, and there are NO free lunches...PERIOD!"
     

    11/14/2024 10:05 AM  #3

    wsinsle
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    From: Belle Vernon, PA
    Registered: 4/01/2013
    Posts: 1,694

    Re: AOD

    You got the Mustang and have $1800 left to buy an AOD, you must of had a really good divorce lawyer.

    If this forum can't fix it, it isn't broke.
     

    11/14/2024 10:11 AM  #4

    Brents65
    I FYI 24-7

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    From: Upstate NY
    Registered: 7/22/2013
    Posts: 512

    Re: AOD

    I actually got bent over and spanked. Not even a get ready kiss on the cheek! But I’m looking forward and keeping on keeping on!

    65 mustang coupe, 351W, C6-  2800 stall, B&M blower, 9inch- trac-loc 3.70 gears
       •Thread Starter
     

    11/14/2024 10:25 AM  #5

    TKOPerformance
    Hyper FYIFORD ADDICT

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    From: Newark, DE
    Registered: 12/15/2014
    Posts: 7,350

    Re: AOD

    The converter needs to be matched to the engine and rear gear and intended use.  Cruise RPM and stall speed will determine whether or not a lockup converter is necessary. 

     

    11/14/2024 10:45 AM  #6

    Raymond_B
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    From: Fort Worth, TX
    Registered: 4/01/2013
    Posts: 1,167

    Re: AOD

    TKO is right, I would give Circle D a shout, go over your combo and see what they recommend. They are great to deal with and are located in Houston.

     

    11/14/2024 11:14 AM  #7

    Rufus68
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    From: Knoxville, TN
    Registered: 4/26/2017
    Posts: 847

    Re: AOD

    That is a good question.  With my T5, my cruise RPM is 2000 +-200 (depending on cruise speed).  What would the expected cruise RPM be for you with an AOD?

    1968 T-code Coupe with a 302.  Nice car, no show stopper for sure, but I like it.
     

    11/14/2024 11:38 AM  #8

    Brents65
    I FYI 24-7

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    From: Upstate NY
    Registered: 7/22/2013
    Posts: 512

    Re: AOD

    I have a 3.70 gear and will be on the highway occasionally at about 70-75 so ideally would like to keep below 2500 rpm.

    65 mustang coupe, 351W, C6-  2800 stall, B&M blower, 9inch- trac-loc 3.70 gears
       •Thread Starter
     

    11/14/2024 12:32 PM  #9

    Ron68
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    From: Mukilteo, Washington
    Registered: 4/01/2013
    Posts: 1,508

    Re: AOD

    351W, 4R70W, 2400 stall converter, 9" 3.25 rear end  - cruise rpm at 60 is ~ 2000

    68 coupe - 351W, 4R70W, 9" 3.25 -- 65 convertible - 289 4v, C4, 8" 3.00
     

    11/14/2024 2:04 PM  #10

    6sally6
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    From: Surfside Beach,SC
    Registered: 4/02/2013
    Posts: 6,709

    Re: AOD

    Do they make a 2800+ stall converter that locks up ?!  (just wondering!)
    3.70:1 gear-in-the-rear might still sound pretty busy at 70+ MPH.......(butt then again... with a blower whining along you're not going for the 'quiet-cruiser' ride anyhow !)

    I realize those rides with the 'Wuhhhh-Wuhhh-Wuhhh'  blower surge go'in on is a sign of a combination that's not set up correctly BUTT............Man does it sound wicked cruis'in through the lot !!!
    {Remember....Pitcherz....lotsa Pitcherz maybe a few videos when complete !}
    6sal6

    Get busy Liv'in or get busy Die'n....Host of the 2020 Bash at the Beach/The only Bash that got cancelled  )8
     

    11/14/2024 3:55 PM  #11

    TKOPerformance
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    From: Newark, DE
    Registered: 12/15/2014
    Posts: 7,350

    Re: AOD

    6sally6 wrote:

    Do they make a 2800+ stall converter that locks up ?! (just wondering!)
    3.70:1 gear-in-the-rear might still sound pretty busy at 70+ MPH.......(butt then again... with a blower whining along you're not going for the 'quiet-cruiser' ride anyhow !)

    I realize those rides with the 'Wuhhhh-Wuhhh-Wuhhh' blower surge go'in on is a sign of a combination that's not set up correctly BUTT............Man does it sound wicked cruis'in through the lot !!!
    {Remember....Pitcherz....lotsa Pitcherz maybe a few videos when complete !}
    6sal6

    Sure, but they get expensive because a car needing a high stall speed is a monster typically so the lockup parts need to be a lot stronger.  That's why I asked, because a non lockup converter is cheaper.  If your cruise speed is above the stall speed there's no need to run a lockup, because the converter is going to basically be locked up anyway.  If you run a nonlockup and cruise at a lower RPM you create a lot of heat, and could kill the trans, because the converter is basically slipping all the time. 

    Here's a high stall lockup converter for an AOD.

    https://www.summitracing.com/parts/ape-26401/make/ford

    Keep in mind stall speed is a relative thing, which is why talking to the company you buy from is a good idea.  Engine size, compression cam, rear gear, vehicle weight, etc. can all effect exactly where a converter stalls, so it may be listed as a 2,400 RPM stall, but that assumes a bunch of stuff.  In your car it might stall lower or higher based on how far from those assumptions you are. 
     

     

    11/18/2024 11:14 AM  #12

    Bullet Bob
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    From: Montrose, Colorado
    Registered: 4/01/2013
    Posts: 4,861

    Re: AOD

    Keep in mind that the AOD converter is "locked up" in overdrive no matter what rpm its turning.  In OD it is using the "outer" input shaft exclusively and that is solid to the TC shell.  If I remember that keerectly.

    "you get what you pay for, good work isn't cheap, and there are NO free lunches...PERIOD!"
     

     

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