4 speed to 5 speed swap ?

Discussion in 'Engine/Drivetrain' started by hilux dully, Nov 7, 2012.

  1. hilux dully

    hilux dully Enthusiast

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    Location:
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    Truck:
    78 crewcab dually and 73 hilux
    what year truck 5 speeds will drop in my 78 20r truck?
     
  2. oldschool64bus

    oldschool64bus Veteran

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    I dont think there was a 5 speed untill they changed body styles in 79, I put one in my old 77. Bolts to the engine fine but since it came out of a truck with torsion bars the trans crossmember was in the wrong place.
     
  3. crazytexan

    crazytexan Member

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    I'm planning on the same thing. If I remember correctly a tranny from before 85 should bolt up. But I'll have to look at my notes I took when I get back to the shop tomorrow to know forsure.
     
  4. oldschool64bus

    oldschool64bus Veteran

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    it will bolt to the motor but 78 and older trucks are coil spring, 79 and up are torsion bar so the tranny crossmember is different
     
  5. crazytexan

    crazytexan Member

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    thankyou for highlighting that. So would the proper crossmember for the 79 and up tranny work on the 78 vehicle? Or is it just a simple case of minor modifications made to the xmember to make it fit?
     
  6. oldschool64bus

    oldschool64bus Veteran

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    we just modified the stock a bit on my truck so I never really looked into it. Now that I think about it my problem could have been the fact I went from a 3 speed auto to a 5 speed also. The mount on the 5 speed sat behind the cross member an inch or 2.
     

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