Sure-Fit LS Transmission Crossmember for 1971-1976 B-Body
The Sure-Fit Crossmember (Only) 1971-1976 B-Body anchors the LS transmission to factory frame rails with pinpoint accuracy and eliminates alignment guesswork. Crafted from thick steel and featuring factory drilled mounting holes, it bolts into place without welding or additional brackets. By securing the gearbox at the correct angle it minimizes driveshaft vibration, reduces wear on universal joints and ensures LS swap alignment. This precision component maintains chassis stiffness under load and helps preserve original handling balance during spirited driving sessions.
Optimized Transmission Angle for Reduced Driveshaft Stress
The Sure-Fit Crossmember precisely positions the LS gearbox at the ideal orientation relative to the B-Body frame rails. By aligning the output shaft with the driveshaft, it cuts down on universal joint wear and vibration, delivering a smoother ride and extended component life. This engineered geometry eliminates trial-and-error during installation and protects against premature drivetrain fatigue under load. Enthusiasts will appreciate the quieter operation and consistent power transfer at all RPM ranges.
Heavy Gauge Steel Construction Maintains Chassis Rigidity
Fabricated from thick steel plate, this crossmember forms a solid bridge between the frame rails, resisting deflection under high torque loads. Its robust build preserves the original handling dynamics of the Impala by locking in transmission support even during hard acceleration and cornering. The added stiffness minimizes chassis twist, keeping suspension geometry consistent and boosting driver confidence. Over time, this durable structure withstands repeated stress without warping or bending.
Factory Drilled Bolt Pattern Simplifies Installation
This crossmember uses the stock mounting holes in a 1971 to 1976 B-Body frame to secure the transmission without welding or extra brackets. Reusing existing hardware means fewer parts and no custom fabrication, which translates to faster garage time and reduced labor. Clear instructions guide you through each step, making it accessible for both seasoned mechanics and first-time swap builders. The direct bolt fit preserves frame integrity while ensuring a secure connection.
Protective Finish Guards Against Corrosion
A robust surface coating is applied to all steel surfaces to resist rust and environmental damage over years of use. This finish acts as a barrier against moisture and road debris, extending the service life of the crossmember and maintaining its structural integrity. Paired with the heavy gauge construction, the corrosion resistance ensures that your transmission support remains dependable through seasonal weather changes. Routine inspection and cleaning will keep the protective layer performing at its best.
Count on MuscleRods for durable transmission support and precise LS swap alignment. For a related CRS product see our 1958-1964 B-Body Sure-Fit Crossmember (Only).