B&M; Transpak Shift Kit; 1965-87 GM TH400/375/M40
The next step up from the Shift Improver Kit is the Transpak. It has all the features in the Shift Improver Kit, plus it provides additional driver manual control (TH400, TH350 only). Most stock automatic transmissions won't...
B&M; Super Trans Kit; 1965-87 GM TH400/375/M40
B&M Tranny In a Box! This is the most comprehensive kit available. Provides parts or necessary part numbers to upgrade your transmission into a true performance transmission. Comes with instruction sheets that provide the...
Painless 200-4R Transmission Lock-Up Set
Now you can control the lock-up function on your 200-4R overdrive transmission with your carbureted engine without having to buy expensive computer controlled equipment. The 200-4R will give you quicker acceleration and...
Painless 700R4 Transmission Torque Converter Lock-Up Set
This TH700R4 Transmission Torque Convertor Lock-Up Kit takes all the guesswork out of controlling the lock-up function on your TH700R4 overdrive transmission. This kit will work with both carbureted and fuel injected engines...