The TCI Circlematic Transmission is a Powerglide-based automatic built for circle track racing. This unit features a 1.82 low gear, reverse shift pattern, clutchless operation and a standard-capacity aluminum pan (528300). It uses a steel drum and hub. Compared with a manual four-speed, the automatic saves roughly 50 to 60 pounds and gives responsive corner exits and restarts. Each transmission uses high-performance clutches and bands and is triple tested for valve body function, static hydraulic pressure and final dyno operation.
- Powerglide-based circle track automatic
- 1.82 low gear
- Reverse shift pattern
- Clutchless operation
- Standard-capacity aluminum pan (528300)
- Steel drum and hub
- Part number: 742010
FAQ
What type of transmission is the TCI 742010?
It is a Powerglide-based Circlematic automatic built for circle track racing.
What are its main features?
It has a 1.82 low gear, reverse shift pattern, clutchless operation and a standard-capacity aluminum pan.
How does it compare to a manual four-speed?
The automatic saves roughly 50 to 60 pounds and provides responsive corner exits and restarts.

