Results 1 to 5 of 5
  1. #1
    Join Date
    Apr 2015
    Posts
    33
    Country Flag: United States

    tko600 to t56 magnum for autocross

    Making some changes to my autocross/roadtrack 69 camaro(ls3 427 650Hp). Having trouble with tko600 missing shift to second at higher rpm. I have to either shift early or shift slower to let rpm drop. The trans has the carbon fiber synchros that were done about 3 yrs ago. Seems like getting worse. So debating freshening up or go to t56 magnum. I am looking at a race prepped t56 but the gearing has me thinking. I am used to 2.87/1.89/1.28/1.00 with the tko and 3.73 rear. The t56 has 2.29/1.60/1.21/1.00. I want to keep ability to pull strong out of corners in second. So not sure how would like the lower 2nd gear ratio. Anyone with experience with these gears?
    1969 Camaro rs
    ls3 427

  2. #2
    Join Date
    Oct 2018
    Location
    San Jose, CA
    Posts
    425
    That trans probably works better with a 4.11
    1971 Camaro - 406 / T56
    2016 Camaro SS convertible
    2018 Colorado 4x4

  3. #3
    Join Date
    Apr 2012
    Location
    Woodstock, IL
    Posts
    2,363
    Country Flag: United States
    What he said ^^

    -Dale
    SchwartzPerformance
    The leader in bolt-in muscle car chassis
    SchwartzPerformance.com | GMachineChassis.com | Facebook | Twitter | Instagram

    Dealer for: Forgeline, RideTech, Tremec, American Powertrain, Silver Sport Transmissions, GM Performance Parts, RECARO, Cerullo Seats, TMI Products, Vintage Air, Baer Brakes, Wilwood, BeCool, AFCO, Tanks Inc, Holley / Hooker, Ultimate Headers, Rick's Tanks, Moser Engineering, Currie, TechAFX, Stainless Works, II Much Fabrication, and many more

  4. #4
    Join Date
    Apr 2015
    Posts
    33
    Country Flag: United States
    Decided to go with bowler transmissions stage 2 t56 magnum with 2.66/1.78/1.30/1.00 gears. Going with the night stick shifter. They are doing some modifications to improve shifting, carbon fiber synchros, vesel shift fork pads, and upgrades to second gear as well as 1-2 synchro hub. Looking forward to improvements during autocross. Jeff at Bowler helped out a lot and came up with a good package for the tranny swap. Name:  640EEC38-93D5-463C-ADB6-7216DF5104E4_1_105_c.jpeg
Views: 69
Size:  229.5 KB
    1969 Camaro rs
    ls3 427

  5. #5
    Join Date
    Oct 2018
    Location
    San Jose, CA
    Posts
    425
    Awesome. Bowler is great. I bought my magnum and much of the conversion from them as well.

    1971 Camaro - 406 / T56
    2016 Camaro SS convertible
    2018 Colorado 4x4