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Thread: Mustang Transmission Options

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  1. #1
    Senior Member Carroll Shelby marshall_mosty's Avatar
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    Mar 2006
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    My vote would be an A-5 conversion for the T-5. Best shifting transmission I've owned. Do spend the extra few hundred bucks for the upgraded mainshaft. Facebook reminded me that I broke my stock mainshaft in my A-5 3 years ago at MSR-H... LOL

    Michael drove a 3550 for 10 years before it finally literally wore out. It never "broke" and once he upgraded a few parts on the 5th gear side, it worked flawlessly. His box has a RR 5th gear and I'm sure he would sell it, but according to Joe Dietrichs it needed about $800 worth of "love" to get it back to "new-ish" condition. He's currently using a TKO-600.
    Marshall Mosty
    AI/SI Texas Regional Director
    2011 NASA-TX American Iron Champ
    AI #67 "Mosty Brothers' Racing" (RIP)
    ST6 #21 Toyota Corolla (being revived)...

  2. #2
    Senior Member Site AdminCarroll Shelby michaelmosty's Avatar
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    Mar 2006
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    Quote Originally Posted by marshall_mosty View Post
    My vote would be an A-5 conversion for the T-5. Best shifting transmission I've owned. Do spend the extra few hundred bucks for the upgraded mainshaft. Facebook reminded me that I broke my stock mainshaft in my A-5 3 years ago at MSR-H... LOL

    Michael drove a 3550 for 10 years before it finally literally wore out. It never "broke" and once he upgraded a few parts on the 5th gear side, it worked flawlessly. His box has a RR 5th gear and I'm sure he would sell it, but according to Joe Dietrichs it needed about $800 worth of "love" to get it back to "new-ish" condition. He's currently using a TKO-600.
    Yup, I still have my 3550 just sitting at the shop. It ran "good" when I pulled it out but had a decent grind shifting from 2nd to 3rd. Everything else about it felt great. I had Joe look through it and he said to do it right it would be $700-800 to change out the worn parts and I figured after racing on it for 10-years to just spend the extra and buy a new one.
    It does have the road race 5th gear which is an expensive conversion because you have to get a new main shaft and 5th gear together.
    If you are interested in it give me a call and we can discuss, 972-897-1424.
    -Michael Mosty
    CMC #11 Mosty Brothers' Racing
    Director - TX Region

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