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    Author Topic: 4 Speed Differences  (Read 1333 times)

    Offline punisher72

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    • 70Challenger 440 4 speed yeeehaaaaa!!!!!!!
    4 Speed Differences
    « on: March 21, 2010 - 04:04:54 AM »
    Is there a sb 4 speed and a bb 4 speed? My challenger id tag says it has a heavy duty 4 speed! Will this handle a 440 with around 400 hp? Its currently running a 318!  :aussie:
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    Offline Changin Gears

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    Re: 4 Speed Differences
    « Reply #1 on: March 21, 2010 - 05:43:31 AM »
    Your trans will handle the power, no problem.

    There is an important difference though.  The front bearing retainer is smaller in diameter on the small block, so it will not align the trans to the clutch.  This can be corrected by replacing the retainer with one used on big blocks 4 speeds that use the 307 input bearing.  It has the larger outer diameter.  You can also correct it with the adapter ring that comes with Lakewood blowproof bellhousings.
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    The goal never changes - Stop the 60' timer with your back tires

    Offline punisher72

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    • 70Challenger 440 4 speed yeeehaaaaa!!!!!!!
    Re: 4 Speed Differences
    « Reply #2 on: March 21, 2010 - 07:32:56 AM »
    Thanx Changin gears. Im happy that is the case. I wasnt sure if i should just look for an auto or not! As i want to keep the box i have :) Im just gathering imformation so i can plan my big block transformation  :burnout: :2thumbs:  :aussie:
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    Offline Changin Gears

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    Re: 4 Speed Differences
    « Reply #3 on: March 21, 2010 - 08:50:23 AM »
    Stay away from the light, keep the stick.
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    The goal never changes - Stop the 60' timer with your back tires

    Offline femtnmax

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    Re: 4 Speed Differences
    « Reply #4 on: March 24, 2010 - 09:14:42 PM »
    Quote from: punisher72 on March 21, 2010 - 04:04:54 AM
    My challenger id tag says it has a heavy duty 4 speed!
    Better inspect to see if you have the original 4 speed.  There is a part number stamped on the pass side of the 4 speed main trans housing that should match some of the VIN number.
    « Last Edit: March 24, 2010 - 10:31:25 PM by femtnmax »
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    Phil

    Offline punisher72

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    • 70Challenger 440 4 speed yeeehaaaaa!!!!!!!
    Re: 4 Speed Differences
    « Reply #5 on: March 25, 2010 - 07:43:49 AM »
    Im away this weekend with the good girlfriend  :droolingbounce: So i will check when possible :)
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    Offline dodj

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    Re: 4 Speed Differences
    « Reply #6 on: March 29, 2010 - 09:48:30 PM »
    Quote from: punisher72 on March 21, 2010 - 04:04:54 AM
    My challenger id tag says it has a heavy duty 4 speed!
    Is there a light duty e-body 833? :dunno:
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    Scott
    1973 Challenger  440 4 spd 
    2007.5 3500 6.7 Cummins Diesel, Anarchy tuned.
    Good friends don't let friends do stupid things. ........alone.

    Offline Chryco Psycho

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    • 70 Challenger R/T SE 70 tube Chassis Cuda now sold
    Re: 4 Speed Differences
    « Reply #7 on: April 01, 2010 - 01:19:07 PM »
    Yes , there are basically 3 4 spds , the light duty which is stronger than virtually any other 4 spd has the smaller 307 front brg & 4.35" diameter front brg retainer & 23 spline input shaft , then the big block 4 spd with the 308 front brg & the 4.80" front brg retainer also with the 23 spline input shaft , then the HD 4 spd , also with the 308 brg & 4.80" retainer & 18 spline input shaft
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    Challenger - You`ll wish You Hadn`t

    Offline punisher72

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    • 70Challenger 440 4 speed yeeehaaaaa!!!!!!!
    Re: 4 Speed Differences
    « Reply #8 on: April 05, 2010 - 05:41:25 AM »
    Thanx Cryco! Thats gr8 imformation  :2thumbs: :aussie:
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    Offline Blue Stone

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    Re: 4 Speed Differences
    « Reply #9 on: April 06, 2010 - 09:01:22 PM »
    Quote from: Chryco Psycho on April 01, 2010 - 01:19:07 PM
    Yes , there are basically 3 4 spds , the light duty which is stronger than virtually any other 4 spd has the smaller 307 front brg & 4.35" diameter front brg retainer & 23 spline input shaft , then the big block 4 spd with the 308 front brg & the 4.80" front brg retainer also with the 23 spline input shaft , then the HD 4 spd , also with the 308 brg & 4.80" retainer & 18 spline input shaft

     Is one of those the T/A 4 speed?
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