Muncie 4-speed or 5-speed Conversion?

Discussion in 'Transmission & Driveline Topics' started by Billy73, Aug 2, 2019.

  1. czizza

    czizza Veteran Member

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    I had a ST10 behind my 409 SBC in my 79Camaro and I broke the transmission 3 times ... I got a TKO500 on Craigslist with a drive shaft for a Cutlass. I got lucky because it was 1000.00 dollars for the stuff.

    The conversion for me was super easy, I had a manual clutch and a 521 bell housing and a 28 spline input shaft. My floor needed a little cutting as my shifter was from the cutlass but the transmission fit in the tunnel with no issues. I got an SST crossmember and the drive shaft from the cutlass had to be shortened. I was out the same day I stated the install.

    http://www.nastyz28.com/threads/tko-500-install-scored-on-craigslist.297319/
     
  2. G72Zed

    G72Zed Veteran Member

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    To the OP, assuming if your 3.73/26.5 tire, look at the Richmond SS 5spd or TKO600 as they have the same first gear 2.89 vs 2.87 and this would give you a 10.66 overall first gear ratio, and at 6,200 rpm, = 45+ mph in first gear.

    Looking at your stroke of 3.750, the sweet spot for overall first gear ratio would be 10.38 if you come in at 3,750# with driver, so only a little over that with either trans.

    I have driven several Camaro's/Chevelle's with TKO600/3.750 stroked engines , 400sbc/bbc and they both used a 4.10 rear gear (12 bolt), first felt very good and usable in both cars, and the .64 OD was close to perfect for the highway at 70-80 mph. Hope this helps out.
     
  3. 76z28

    76z28 Veteran Member

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    If going from auto, the cost of the muncie is not worth it--especially if buying new parts.
    Go 5 or even 6.
    When I priced mine I got the 6 speed within about 400 bucks of the 5 speed. I can't wait to get it in. Not sure when that will be though.
     
  4. czizza

    czizza Veteran Member

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    ... That's no fun ... nothing like banging gears and downshifting on turns.
     
  5. 76z28

    76z28 Veteran Member

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    Just so much going on...
    May get started soon but we will see.
    I hope to start some time this month
     
  6. Kricka

    Kricka Veteran Member Lifetime Gold Member

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    I installed a TKO600 (0.64 OD) in 2005. I use my car as a daily driver in the summer and have ~22000 Miles on it.
    It is the best mod i have done so far.
     
    G72Zed, dave@ztech and tom3 like this.
  7. ZEN357

    ZEN357 Veteran Member

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  8. Jeep43

    Jeep43 Veteran Member

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    Has anybody confirmed if the box modifications that some relailers perform for tunnel clearance are required for a 2nd gen? I guess I am asking is has anybody swapped in a box stock TKO into a 2nd gen instead of buying a "kit".

    upload_2019-8-13_9-4-2.png
     
  9. tommy1727

    tommy1727 New Member

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    Silver Sport Transmissions has TKO 5 speed or Magnum 6 speed conversion kits. Check them out. Great kits and customer service. They probably even have YouTube videos of that conversion.
     
  10. diamondr

    diamondr New Member

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    I have a 1973 Z-28 (bought new) I have a 383 500 horsepower in it. Came from factory with 4 speed pulled the original engine and transmission. Put a TKO 600 behind the 383 works great. Used my 4 speed T- handle from in the 70's. Everyone thinks it is still the 4 speed. I also can run my console. Have the 3.73 original rear runs 1800 to 2000 RPM at 70 mpg in 5th . 5th is .64. Car is a driver not a show queen.
     

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