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How hard to change 99 Trans am from auto to 6 speed?

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  • How hard to change 99 Trans am from auto to 6 speed?

    How hard would it be to change a 1999 Trans Am with automatic tranny to a 6 speed? what all would be needed besides the tranny, clutch and pedals?

  • #2
    Check LS1 Tech, this should get you started though.

    Originally posted by dragonZ28 View Post
    OK. Here is a parts list needed for swapping out a 4L60E for a T56 in an LS1 Fbody:

    master + slave cylinders (prefer 01 up) (also, master cylinder u-bolt and nuts)
    new pedal assembly with clips for clutch rod and brake rod
    new console tray with shift boot, and lower shift boot
    pilot bearing, bellhousing, T56, crossmember, T56 torque arm mount and bolts, shifter
    pressure plate, flywheel, clutch, and all related bolts and clutch tool
    You will need to have your PCM flashed to a 6spd PCM, but you do not need a new PCM

    THE SAME DRIVESHAFT CAN BE USED

    REWIRING instructions: (disconnect battery)

    connect the orange w/ black stripe and the black wires together for hatch release

    connect the purple w/ white stripe and the dark green to the clutch switch so the clutch pedal needs to be depressed before the car will start

    connect light green and brown into the reverse switch located on the passenger side of the T56 for the reverse lights to work. You can buy the pigtail, or engineer a way to get the wires to hold and be protected. I put the wires in and pinched them into place. The pigtail will run about $50 of unneccesary spending

    WATCH THE FOLLOWING FUSES: starter, gauges, Turn/BU lights.

    Troublesome parts:

    The hardest part is mounting the master cylinder. Pulling the auto is no big deal. You will need a long extension or two, and a swivel joint to get this thing out though.

    The steering column will need to come out, but it is pretty simple. 6 bolts hold it in. 1 is under the hood at the joint in the column, 3 are on the firewall behind the pedals, and two are holding it to the underside of the dash. Afetr these are removed and all electrical connectors are unplugged, wiggle it out of there. It should be free of any connections at this point, except the safety device on the top of the column. Follow the device that hooked to your auto shifter up to your column. Take this off. I believe it has 2 screws holding it in place. This locks the ignition until the car is in park. Since you no longer have "park", this thing needs to go.

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