1965-1987 GM TH400, TH375 & TH475 Automatic Transmissions. Heat Protection Stage 3 - Competition use

Stage 3 - Competition use Only

Center nut works with both 1/4-20 and 5/16-18 thread studs

This intake manifold can be used on 318 c

these systems include all necessary parts and hardware for easy installation you can do at home

this Hi-Tech checking pushrod is adjustable from 5

1965-1987 GM TH400, TH375 & TH475 Automatic Transmissions. Heat Protection Stage 3 - Competition useThe B&M Shift Improver kits feature two options to recalibrating your 1965 1987 GM TH400, TH375 and TH475 automatic transmissions. First is the HEAVY DUTY set up, giving you firm positive shifts without loss of driver comfort for improved performance in all street vehicles. This is a great option for performance street driving or towing. The second is our STREET STRIP set up. Be warned, this will deliver firm positive shifts you will feel, along with