T5 transmission compatibility

Discussion in 'Technical' started by bryson123, Jan 19, 2019.

  1. bryson123

    bryson123 Member

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    hello I was looking to do the t5 swap and someone locally has a t5 but it is from a 94 v6 it is a world class. My question is would this hold up the same as 5.0 t5 and the only thing I believe I have to do is switch input shafts. Could I use the bell housing from the v6? Thanks here is the I’d tag number 1352-238
     
  2. BBMS18

    BBMS18 Member

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    C04EF4A6-AFDF-4A57-A07D-6FDB2BC0D839.jpeg
    238 is 95-97 Mustang 3.8 ltr rated at 265 ft lbs. I believe the 3.8 and 5.0 share the same bell bolt pattern. The 94-95 T5 has a 5/8” to 1” longer bell, you can swap the input, front bearing retainer and bell from the earlier T5 to shorten it.

    You may find the info in this link helpful.
    http://www.mustangandfords.com/how-...ever-wanted-to-know-about-the-t-5-five-speed/
    It looks like the 3.8 and 5.0 share the same 10 spline input shaft.
     
    Last edited: Jan 19, 2019
  3. baddad457

    baddad457 Member

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    Almost every Ford manual transmission used a 1-1/16" 10 spline input. 'Cept for the big block Toploaders. Probably all the T5's used the same input diameter and spline.
     
  4. BBMS18

    BBMS18 Member

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    Yes the T5 4 cylinder uses a 10 spline input but NOT the same as 3.8 & 5.0.

    Copied from the link I posted earlier.

    Ford also used the T-5 in 2.3L four-cylinder cars through the years. While the four-cylinder T-5 may appear to be the same externally as the V-6 and V-8 versions, they are not the same box. Most four-cylinder T-5 transmissions received a 3.97:1 gear set with a 0.79 overdrive and smaller input pilot bearing shaft. A four-cylinder T-5 should never be used behind a V-8, even when the pilot bearing’s inside diameter is decreased to match shaft pilot size. These smaller input shafts will not hold up to the added torque and provide too low of a First gear ratio. Torque rating is just 240 lb-ft.
     
  5. baddad457

    baddad457 Member

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    25 ft/lbs ain't a whole lotta difference in strength. That first gear though would be a deal breaker making it all but useless on the street.
     
  6. Krazy Comet

    Krazy Comet Tom

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    Second gear in the 265 ft lb 5.0 version(1352-169) will not stand up to repeated power shifts, especially with sticky tires. I have the T-shirt for that one. When I rebuilt it, bought the '90-'93 gear set rated at 300 ft lbs. Never had another issue.

    AFAIK the 3.8 V6 T-5 is same as early 5.0 with exception of a slightly longer input shaft. Requires a deeper bell that moves transmission rearward in the '94-up. All this was over shifter location.

    BTW the 3.8 v6 & 5.0 do share bell bolt patterns. DO NOT use v6 flywheel on 5.0
     
    Last edited: Jan 19, 2019
  7. RMiller

    RMiller My name is Rick

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    You could use it as is with a flywheel from a 5.0 truck. That was my plan until I picked up a TKO and a 347!
     
  8. Krazy Comet

    Krazy Comet Tom

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    Don't trucks generally have a 164T flywheel vs 157T for 5.0 Stang? I know the different tooth count flywheels require a matching bell. Also if 302 is early version(before 1981) with 28 oz balance, it will require early 302/5.0 or 351 flywheel.
     
  9. RMiller

    RMiller My name is Rick

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    They do but so does the V6. If you use the V6 trans and bell with a late model 5.0 like I was going to do the truck flywheel will work with it.
     
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