B&M Adjustable Modulator - GM TH350/TH400 Automatic Transmissions - 20234

Overview:The B&M® vacuum modulator is fully adjustable and allows you to fine-tune your shift points and shift feel. This is done by turning the adjustment screw inside of the vacuum line connection for more or less diaphragm preload, thus raising or lowering part throttle shift points and line pressures. For GM TH350 and TH400 automatic transmissions.Features: Allows you to Tailor Shift Points New O-ring Helps Stop Leaks Fully Adjustable B&M Quality Application: Year Make Model Submodel Engine Size 1967 - 1970 Pontiac Executive 1965 - 1969 Pontiac Tempest 1965 - 1969 Buick Special 1967 - 1972 Buick Sportwagon 1965 - 1983 Cadillac Commercial Chassis 1970 - 1974 GMC G35/G3500 Van 1970 Pontiac Tempest Base 1967 - 1974 GMC C25/C2500 Suburban 1967 - 1974 GMC K25/K2500 Pickup 1968 - 1974 GMC K25/K2500 Suburban 1968 - 1974 GMC K35/K3500 Pickup 1971 - 1977 GMC Sprint 1965 - 1971 Oldsmobile 442 1965 Oldsmobile 98 Base 1966 - 198