C-6 Ford Improver Kit

The B and M AUTOMOTIVE C-6 Ford Improver Kit is a professional-grade automatic transmission shift kit engineered for 1967–1991 Ford C-6 transmissions. Designed for drivers and mechanics seeking sharper, more responsive gear engagement, this shift improver addresses the inherent softness of factory C-6 valve body calibration. Whether you're building a street machine, restoring a classic Ford, or upgrading a daily driver, smoother and more positive shift feel improves driving experience and reduces transmission stress during spirited acceleration.

This kit modifies the transmission's internal hydraulic pressure and shift timing by recalibrating valve body orifices and spring tensions, resulting in firmer clutch apply and quicker throttle response without inducing harsh shifting or durability compromise. The B and M design maintains factory shift firmness within safe operating parameters, preserving OEM band and clutch wear patterns while delivering noticeably crisper shift events. Compact and lightweight at 1.23 lbs, the kit integrates seamlessly into the existing valve body assembly, requiring no external modifications or exotic tuning knowledge—standard transmission service tools and experience suffice for installation.

Mechanics and enthusiasts restoring or modifying 1967–1991 Ford C-6 automatics—including applications in Mustangs, F-series trucks, Broncos, and performance restomod builds—benefit from the improved shift quality and refined drivability this kit delivers. Installation requires removal of the valve body and pan; no core return or transmission removal is necessary. The C-6 Ford Improver Kit pairs effectively with stock converters or performance stall units, making it an ideal first upgrade for those seeking transmission refinement without full rebuilds or exotic shift kits.