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Performance Automatic TH350 Transmission Stage 1

Performance Automatic PA35101


made in usa
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Ships directly from the manufacturer
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Truck Freight: $119.00
Performance Automatic TH350 Transmission Stage 1 $1,249.37
TH350 Transmission
  • Stage 1
  • 450HP Rating

  • Performance Automatic PA35101 Details

    Stage 1 Transmissions

    NOTE: Speedometer drive gear not installed and must be purchased separately.

    Performance Automatic Stage 1 Street Smart TH350 - Rated to 450 Horsepower
    Front Pump - New seal, Babbitt bushing, new pump gear, stator half of pump squared flat with rotor to pump clearances set at .0025-.0035

    Forward Drum - 5 Alto forward clutches, clearance for forward clutch pack set to .030"-.045", 4 flat steels and 1 waved cushion steel, for a smoother engagement. All return springs are used.

    Direct Drum - 5 Alto direct clutches, 5 flat new steels, clearance for the direct clutch pack.050-.070. An extra wide drum bushing is added for better support. All return springs are used.

    Intermediate Clutches - 3 Alto Intermediate clutches, 3 flat steels & 1 waved cushion steel for a smoother engagement and it helps keep the intermediate sprag race from breaking.

    Low/Reverse Section - Hand picked planets, input integral gear, reaction carrier, reaction carrier shaft, hand picked reaction sun gear & sun shell, internal reaction gear, internal reaction gear support, sun shell, 5 Alto clutches, 5 steels, HD bronze rear case bushing, new extension housing bushing and new gear on the governor.

    Valve Body - Trans-Go Performance Shift kit modified to street/strip specifications to give more holding capacity. Modified accumulators to give the best possible part throttle shifts, and progressively firmer shifts with more throttle opening. The late design Sealed Power (filtran zero-leak) filter is used in this transmission. An adjustable modulator is used to fine tune part throttle shifts.

    Transmission Pan - Chrome pan with a drain plug for easy servicing when its time to change fluid.


    Safety Rating
    Not SFI Approved
    Case Material
    Yoke Style
    Slip On
    Dipstick Included
    First Gear Ratio (Automatic Transmissions)
    Flexplate Shield Built In
    Fluid Fill Location
    Input Spline Quantity
    Pan Type
    Deep chrome steel
    Sold individually
    Tailshaft Length (in.)
    Trans-Brake Included
    Transmission Shield Built In
    Valve Body Style
    Manufacturer's Part Number:

    Performance Automatic TH350 / TH400 / 700R4 / 4L60E / 4L80E Transmissions
    These Performance Automatic transmissions are designed for Street Rods, Resto-Mods or Street Machines. These units are configured to meet or exceed current offerings in the market place. Not intended for all out race vehicles or for extended use above the recommended horsepower ratings.

    Performance Automatic Super Streeter 4L60E / 4L80E - Rated to 450 Horsepower
    Super Streeter Transmissions are perfect for enthusiasts who need a reliable performance transmission that will handle 450 horsepower and shift on its own. They were designed to give you firm, crisp shifts every time making these transmissions a popular choice among street machiners in the street/strip segment. Heavy duty bands and clutches along with detailed installation instructions are just some of the standard features with each Super Streeter Transmission.

  • Extreme Duty Clutches & Bands
  • Improved Lubrication Circuits
  • Reduced Heat/Prolonged Life
  • Firm Automatic Shifts
  • Improved Thrust Capacities

    Performance Automatic TH350 / TH400 / 700R4 Transmissions
    Whether you need a 3 speed or a non computer controlled overdrive, Performance Automatic has the Transmission or Complete Street Smart Package that's right for you and your application. These transmissions are perfect replacements for your tired and worn out stock units. They use only the best cores available to ensure you the best quality. Each transmissions features reworked shift calibrations and upgraded clutches. All Street Smart Packages come complete and ready to be installed right out of the box. Superior components plus top notch quality manufacturing make these transmissions second to none.

    Stage 1 Transmission Features:
  • Heavy Duty Clutches
  • Valve Body Shift Package
  • Chrome Pan

    Stage 2 Transmission Features:
  • High Performance Racing Clutches
  • Valve Body Shift Package
  • Aluminum Pan

    Note: Performance Automatic TH350, TH400 and 700R4 transmissions do not include the drive or driven gears for a cable driven speedometer or vehicle speed sensor. The differential gear ratio and rear tire diameter are required to purchase these items separately. Performance Automatic 4L60E and 4L80E transmissions require the use of an electronic speedometer.

  • Items You Need
    Some parts are not legal for use in California or other states with similar laws / regulations