What 5 or 6 speed to use?

Discussion in 'Transmission & Driveline Topics' started by Bentley, Aug 15, 2020.

  1. Bentley

    Bentley Member

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    That I won't have to cut up the tunnel too badly or at all?? Such a thing exist..

    Thanks for any help here..
     
  2. 72BIGBLOCK

    72BIGBLOCK Veteran Member

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    I used a t56 from a 2001 Pontiac trans am ws6 and didn’t have to cut the tunnel, I did have to shorten the driveshaft and move my console back an inch and a half but my cars a 69 oh and I did have to open the slot for the shifter a bit but nothing major 343B92D0-F0C5-4756-AF3D-32B512FE3478.jpeg
     
  3. tom3

    tom3 Veteran Member

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    I'm liking that shift pattern plate you have there. Nice finishing touch.
     
  4. tom3

    tom3 Veteran Member

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    I'm running a Tremec TKO five speed. Motor pretty much built for mid range and torque rather than a big cam version. No major changes or high priced parts needed to swap except for shortening the driveshaft. Runs good with a 2:73 or 3:08 rear gear with the trans. ratios.
     
  5. biker

    biker Veteran Member

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    There are a few companies that offer a tremec tko 500/600 kit that bolts in without cutting. I have one from SST. But they are expensive. I think the 5 speeds from the 3rd gens bolt in, but they aren't really strong.

    I really like my TKO, but if you can find a T56 used that you can make fit for cheap, they are a great trans.
     
  6. redriderjf87

    redriderjf87 Veteran Member

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    +1 on the TKO and what was said above. A tight fit around a couple of the corners of the shifter, but overall went in pretty easily. Also recommend the kit companies like Hurst or SST at least in my experience.

    Also there are a few different variants of the overdrive ratio depending on how tall you want it.
     
  7. 72BIGBLOCK

    72BIGBLOCK Veteran Member

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    Thanks
    It’s better now it sits flush
     
  8. czizza

    czizza Veteran Member

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    +TKO and you can re-use your original Bellhousing and manual clutch just need to shorten driveshaft and a buy different cross member.
     
  9. Lowend

    Lowend Administrator. .a car, a man, a maraca. Staff Member Lifetime Gold Member

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  10. G72Zed

    G72Zed Veteran Member

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    Another option is the Richmond Super Street 5spd, It's one of the closest in dimensions to the Muncie's our cars came with. They offer 10 or 26 spline input and have 3 choices of 1st gear ratios and uses the "middle of the road" .77 5th gear compared to the TKO's .82 or .64.

    I think all that's needed in a stock application is move the trans cross member back 2 inches and uses the same drive shaft with TH400 yoke. It's a tuff trans, but keep the rpm's under 6,800 and you will be OK.
     

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