C4 Torque Converter Sat Night Special 24sp 66-69

The TCI C4 Torque Converter Saturday Night Special is a 12-inch diameter torque converter engineered for C4 automatic transmissions in 1966–1969 vehicles. This converter features a 1600–2000 RPM stall range and a 10.5-inch bolt circle, delivering the street performance characteristics demanded by drivers seeking responsive acceleration and improved launch capability in classic muscle car and hot rod applications.

The 1600–2000 RPM stall specification positions this converter in the Saturday Night Special category—a proven platform for operators who balance street manners with strong off-the-line performance. The 12-inch diameter and 10.5-inch bolt circle ensure proper fitment with factory C4 installations, while the converter's hydraulic design allows engine speed to rise to the specified RPM range before full fluid coupling engagement. This delayed lock-up translates to quicker throttle response and measurable acceleration gains without requiring transmission modifications or exotic fuel requirements.

This converter serves drivers and builders restoring or upgrading 1966–1969 model-year vehicles equipped with C4 transmissions who want documented improvements in launch feel and 0–60 performance. The Saturday Night Special designation indicates streetable characteristics—not a dedicated race-only converter—making it suitable for drivers who operate their vehicles on both highway and road course environments. Weighing 29.73 pounds, it integrates as a direct replacement for original equipment, requiring no custom driveline work or exotic supporting modifications.

TCI (Transmission Control Inc.) has established itself in the transmission and driveline market as a manufacturer focused on bolt-in performance upgrades for classic and modern powertrains. The C4 Saturday Night Special represents a midrange entry in their converter lineup—more aggressive than stock but engineered for drivers who demand reliability alongside spirited acceleration.