1968-1981 GM TH350 Automatic Transmissions.The B&M Transpak is the next step up from the B&M Shift Improver kit. It has all the features in the Shift Improver kit, plus it provides additional driver manual control (GM TH 400, 350, Ford C 6 and Chrysler Torqueflite only). B&M Transpak kit for 1968 1981 GM TH350 automatic transmissions. Most stock automatic transmissions won't downshift into low gear above 15 mph, and automatically upshift at a predetermined speed no matter what gear you're in.

and feature a fine-tuned spring rate (150 lb/in front) to give you great handling and a smooth ride

4038 - 1964-1972 A-Body Lower Control Arms- Poly/Roto-Joint

This allows the adjustment range to be tailored to how the vehicle is set-up and how the vehicle will be driven or used for competitive purposes

5 Ratio for Chevrolet/SBC w/ 7/16" Stud

less prone to kinking) outer jacket for durability and dependability

uses OEM hardware

Also features Stainless Steel spacers and Black Anodized 2024-T351 Aluminum alloy turnbuckles for lightweight strength

It includes a transmission crossmember and a new adjustable torque arm for easy bolt-in installation

and the coil design allows the springs to be compressed to coil-bind without affecting spring rate or free height

slick tracks or allow for easy-up weight transfer or rear separation

5° negative beyond stock (OEM spring size limits inboard travel slightly compared to the generally smaller sized coilover springs)

454-R EFI intake manifold is designed for competition 396-502 big-block Chevy engines with rectangular-port cylinder heads