B-Body LS Transmission Crossmember for 1965-1970 Chevy Impala and Caprice
When converting a 1965 to 1970 Impala or Caprice into an LS powered classic, securing the transmission with precise alignment can be a major hurdle. This crossmember is engineered to drop into the original frame rails on convertible models, positioning the driveline exactly where it belongs. It accepts 700R4, 4L60 and TH350 transmissions without modifying the tunnel and its robust steel construction offers consistent support whether you are on a long highway run or pushing the car on back roads. Enthusiasts tackling LS engine swaps will value the sure fit and uncomplicated installation this component delivers.
Contoured Design for Convertible Frame Rails
The B-Body crossmember features a shape that fits precisely within the factory rails of 1965 to 1970 convertible Impalas and Caprices. By matching the original frame contours, it positions the engine and transmission in the exact factory location, preserving interior floor height and driveline angle. This approach eliminates the need for tunnel modifications, safeguarding the vehicle's structure and detailing. As a result, your restored classic retains its visual integrity while gaining modern powertrain capability.
Precision Fit for LS Engine and Automatic Transmissions
This crossmember accepts 700R4, 4L60 and TH350 transmissions without any alterations to the tunnel, allowing plug and play installation for popular LS conversions. Even when pairing with a heavier 4L80E unit, only minor tweaks are needed to maintain proper clearances. The precisely located mounting points ensure consistent driveline alignment that minimizes vibration and wear on universal joints. Enthusiasts will appreciate the way this design streamlines the integration of modern powertrains into a classic chassis.
High Grade Steel Construction for Rigidity and Durability
Manufactured from premium steel plate, the crossmember provides the strength needed to resist bending and flex under load. This rigid support improves chassis stiffness, enhancing cornering precision and reducing body roll in spirited driving. The robust design distributes engine torque evenly to the frame rails, protecting weld points and preserving long term integrity. Drivers will notice a firmer feel at the wheel and confidence when accelerating hard or braking from high speed.
Count on reliable fit and strength for lasting performance. To complement this installation see our Related CRS product 1958-1964 B-Body Sure-Fit Crossmember (Only).