Unrivaled Customer Service
And Expert Tech Advice!  
Same Day Shipping Before 11 PM ET
My Cart
Shop By Vehicle
Shop By
Close Menu
Shop By Vehicle
Top Categories
All Categories

Top Categories

All Categories

Free Catalog
E-Mail Signup
My Account
Track Order
Gift Certificates

TCI Transmission Package GM TH350 Circlematic 2-Speed Transmission

TCI 312021


jegs shipping
Estimated to ship directly from the manufacturer on 07/31/18
Easy Returns
Easy Returns
Lowest Price Guarantee
Lowest Price Guarantee
Truck Freight: $119.00
TCI Transmission Package GM TH350 Circlematic 2-Speed Transmission $1,604.99
Transmission Package
  • GM TH350 Circlematic 2-Speed Transmission
  • FastLap Torque Converter

  • Specifications:

    Manufacturer's Part Number:

    The Circlematic Transmission and FastLap Torque Converter could be the perfect solution to improve throttle response and acceleration. Due to a significant increase in efficiency, this combination also reduces engine speed by 300-400 RPM for better temperature control.

    Best of all, it provides maximum engine braking to help slow the car down going into the corner, making it perfect for stock cars and trucks that are limited on allowable rear end gearing. For classes that mandate the use of GM Powerglide and TH350 transmissions, there is no better choice for asphalt or dirt racing competition. As with every TCI transmission or converter, these units are triple tested (including a complete dyno certification of the transmission) and rigorously inspected to provide unmatched performance and race-after-race durability.

  • Specially-matched transmission and torque converter packages provide instant throttle response and superior engine braking capabilities
  • Clutch doesn't require adjustment before each race
  • Torque converters reduce slippage by up to 10% for off-the-corner acceleration improvements
  • Lap times can be reduced by one to two-tenths of a second

    Note: Speedometer drive gear and driven gear not included.

  • What is the final drive ratio 1:1 or other ?

    Asked by: Swoop
    This transmission has a final drive of 1:1
    Answered by: Rusty B
    Date published: 2017-09-08
    • y_2018, m_7, d_18, h_6CST
    • bvseo_bulk, prod_bvqa, vn_bulk_2.0.8
    • cp_1, bvpage1
    • co_hasquestionsanswers, tq_1
    • loc_en_US, sid_10001_10001_1014792, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_jegs
    Some parts are not legal for use in California or other states with similar laws / regulations