The TCI Saturday Night Special torque converter is built for early 66 to 69 Ford C4 transmissions with a 24-spline input. It provides a 1600 to 1800 RPM stall behind small blocks and 1800 to 2000 RPM behind big blocks. A popular choice for show cars and street rods, it uses many features of full competition TCI converters, including furnace-brazed fins and a hardened, pre-ground pump hub. For an accurate stall estimate, TCI support can review vehicle weight, engine displacement, power adders, rear gear ratio and tire diameter.
- Fits 24-spline early Ford C4 transmissions
- Advertised 1600-2000 RPM stall depending on engine
- Furnace-brazed fins
- Hardened, pre-ground pump hub
- Part number: 450600
FAQ
What is the stall speed of the TCI 450600 converter?
It carries an advertised stall of 1600 to 1800 RPM behind small blocks and 1800 to 2000 RPM behind big blocks.
Which C4 transmissions does it fit?
It fits early Ford C4 transmissions with a 24-spline input.
How can a more precise stall rating be determined?
TCI support can provide a more accurate stall range given the vehicle weight, engine displacement, power adders, rear gear ratio and tire diameter.

