Tranny Swap

Discussion in 'Classic Mustang Specific Tech' started by Celtic Warrior, Dec 17, 2013.


  1. Celtic Warrior

    Celtic Warrior New Member

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    I have 1972 Mustang Convertible.with a 351 Cleveland and FMX trans. Looking to put either a T-5 or Tremec 5 speed in. Any advice would be helpful. What yr T-5 should I get? Best place to gets conversion kit? Want to do it, but lost
  2. geostang351

    geostang351 Member

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    The T-5 you want is a 90-93 out of a Mustang. It is rated at 300 ft/lb as the 83-89 are at 265 ft/lbs. If you can find a 93 Corba Mustang T-5, that is slightly higher. Not sure the strength of your motor so maybe a beefier one if you have crazy torque.

    Modern Driveline has very thing you need!

    http://moderndriveline.com/catalog/product_catalog.htm#
  3. chris66dad

    chris66dad Member

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    We put a T5 in the 66 but only have a 289. You can get a bullet proof Astro T5 that is good for 550 hp if you have deep pockets and are going to beat the car hard on the track.
    http://www.pro-forceperformance.com/astro_a-5.htm (about $2200)
    Useful info from my swap for you to view:
    http://chris66dad.tripod.com/id38.html
    http://chris66dad.tripod.com/id33.html
    http://chris66dad.tripod.com/id32.html
    http://chris66dad.tripod.com/id34.html
    http://chris66dad.tripod.com/id44.html

    I did a bargain change for about $1390.
    Here was my parts list and price:
    350 T5 transmission (used but good)
    25 T5 bell housing (used but good)
    25 T5 block plate
    110 28 oz flywheel that mounts a 10 1/2 clutch
    225 I went with a hydraulic clutch actuator
    150 10 1/2 inch King Cobra clutch package
    15 T5 clutch fork
    35 ARP flywheel and clutch bolts
    150 Transmission cross member and rubber mount
    0 Possibly a new yoke (check fit first)
    299 Check drive shaft for 1/2 to 3/4" free play (new aluminum)
    5 New speedometer gear
    ----------------------------------
    1389 total
    The 300 aluminum drive shaft was not really required but was a nice addition.

    I could have saved another 75 on the hydraulic slave bracket if I made my own. Modern Driveline has a nice one that is just a piece of angle iron that would be easy to make. check my link above on hydraulic clutch

    I searched for a long time before I found a guy who was parting out his 89 Mustang. He wrecked the car but "said" the T5 and engine were in good shape. So far it has worked out. I did put a steel retainer and new rear seal in it ($40)
  4. geostang351

    geostang351 Member

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    Where did you find the T-5? And all the other inexpensive parts (clutch;flex plate0?
  5. chris66dad

    chris66dad Member

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    T5 & bell was from a wrecked 89 Mustang that was on Craigslist.
    eBay for most of the other parts.
    Small items (Fork, ARP bolts, etc) came from NAPA parts

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