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3 on the tree

Discussion in 'Manual Transmission & Clutch' started by NicBop03, Dec 27, 2019.

  1. idahovette

    idahovette Full Access Member

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    Back in the day everybody with a tri-five was looking for the Saginaw 3 speeds. We couldn't afford a 4 speed and these were full synchro and direct bolt in except for having to change the slip yoke.
     
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  2. DoubleDingo

    DoubleDingo When In Doubt, Throttle Out

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    The diamond in the rough is the 3 speed with Borg Warner overdrive. Also a direct bolt in but that needs 4.57 rear gears because of the 30% overdrive. Those 4.57's become 3.19's for highway cruising.
     
  3. MikeB

    MikeB Full Access Member

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    That's a flashback! I forgot all about the transmissions in my 55 and 57 Chevy cars with non-synchro 1st gear. But now I remember double-clutching and rev-matching to downshift to 1st while the car was still rolling.
     
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  4. jjester6000

    jjester6000 Full Access Member

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    I just welded some old nuts and washers I had laying around in the place of bushings.

    It does not slip between the gears anymore, and that is all I care about.
     
  5. jjester6000

    jjester6000 Full Access Member

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    I got a buddy with an OD transmission, and I am hoping to swap it into my truck.
     
  6. DoubleDingo

    DoubleDingo When In Doubt, Throttle Out

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    Is it the three speed with overdrive?
     
  7. jjester6000

    jjester6000 Full Access Member

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    yes
     
  8. Octane

    Octane Full Access Member

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    I had a 1967 with a six cyl. and 3 on the tree.Put a v8 in it and after a few months cracked the tranny case down the side.Must have been a 350. gear for 1st gear then.
     
  9. DoubleDingo

    DoubleDingo When In Doubt, Throttle Out

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    Way cool. Do you have 4.57 gears? It's a steep overdrive, 30 percent.
     
  10. jjester6000

    jjester6000 Full Access Member

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    No, I got 4:10, and some bigger tires already.

    With my '30.6 tires, I will probably be turning 2200 rpm on the highway.

    I guess that is quite steep, but I am going to take it storm chasing, and most of my miles will he highway.
     
    Last edited: Jan 15, 2020
  11. DoubleDingo

    DoubleDingo When In Doubt, Throttle Out

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    That makes the final drive ratio 2.87. Hope you have a good torquey engine. 2200 isn't bad, but if your engine is lacking in power you'll notice it quickly. My Crusty Biscuit has that transmission and 4.57 gears, and it doesn't like grades or headwinds in overdrive. 3.19 is my final drive ratio, and my tires 30.7 diameter.
     
  12. DoubleDingo

    DoubleDingo When In Doubt, Throttle Out

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    It's a little bit of a learning curve using that transmission too. The freewheeling feature is blessing and a curse.
     
  13. DoubleDingo

    DoubleDingo When In Doubt, Throttle Out

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    I forgot you have the 250 in your truck.
     
  14. jjester6000

    jjester6000 Full Access Member

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    In theory, can't I engage the overdrive in any gear? I know that is how it works with a Gear Vendors.

    It doesn't really matter though, since if I engaged it in 2nd, it would still be 1.05 to 1, not an overdrive.
     
  15. jjester6000

    jjester6000 Full Access Member

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    Imagine reverse with the gear vendors, that would be pretty fast.

    Imagine driving down the highway in reverse.
     

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