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TCI Circle Track TH350 Automatic Transmission Package 312021
Part Number: TCI-312021
TCI Circle Track Transmission Packages
TH350 2-SPD CIRCLEMAX W/ 242420
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Estimated Ship Date: Oct 21, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
312021
Part Type:
Product Line:
Summit Racing Part Number:
TCI-312021
UPC:
788120044509
Number of Gears:
3
Bellhousing Bolt Pattern Manufacturer:
Chevy
Transmission Shift Pattern:
Reverse
Valve Body Style:
Full manual
Torque Converter Included:
Yes
Flexplate Included:
No
Transmission Controller Included:
No
Wiring Harness Included:
No
Transmission Cooler Included:
No
Torque Converter Diameter (in.):
10.000 in.
Advertised Flash Stall Rating:
1,600-1,800 rpm
Trans-Brake Included:
No
Lockup Compatible:
No
Transmission Pan Style:
Stock
Transmission Pan Material:
Steel
Transmission Pan Finish:
Natural
Input Spline Quantity:
30
First Gear Ratio (Automatic Transmissions):
2.52
Transmission Case Style:
OEM
Transmission Case Material:
Aluminum
Transmission Case Finish:
Black
Transmission Shield Built In:
No
Flexplate Shield Built In:
No
Fluid Fill Location:
Case
Transmission Fluid Included:
No
Dipstick Included:
No
Remanufactured:
Yes
Quantity:
Sold as a kit.
TCI Circle Track Transmission Packages
TCI Circle Track transmission packages use the latest developments in drivetrain technology to deliver superior performance in one convenient package. As with every TCI Circle Track transmission, those used in Circle Track packages include several advantages over the commonly used manual transmissions, including lighter weight (50-60 lbs. over standard), more economical pricing and performance improvements. Some of these performance improvements include instant throttle response, superior engine braking capabilities and quicker lap times. The converters used in these packages are specially designed with a lower "positive lock-up" stall speed which can eliminate up to 10 percent of power robbing slippage found in OEM and lesser quality converters. This can ultimately result in reducing lap times by as much as one to two-tenths of a second. These units are triple tested and rigorously inspected to provide unmatched performance and race-after-race durability. For Circle Track racers looking for the ultimate transmission/torque converter setup, TCI Circle Track transmission packages are the perfect solution.
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