LS Transmission Crossmember for B-Body Chassis
When swapping an LS transmission into your classic 1971-1976 B-Body, the Sure-Fit Crossmember (Only) 1971-1976 B-Body delivers the precise mounting geometry needed to align driveline components without guesswork. This transmission crossmember bolts directly to the factory frame rails and supports the gearbox at the correct angle, cutting down fitment errors and saving time in the garage. Built from thick steel with a protective finish, it maintains chassis rigidity under stress and keeps your drivetrain properly aligned through rigorous driving conditions.
Precision Engineered Geometry for LS Drivetrain Alignment
The Sure-Fit Crossmember is crafted to match the exact factory frame contours of a B-Body chassis, ensuring the LS transmission settles into perfect alignment. By holding the gearbox at the correct angle, it minimizes driveshaft vibration and reduces wear on universal joints. This level of accuracy removes the need for trial-and-error measurements, cutting installation time and maintaining the original driveline geometry. Precision alignment also contributes to smoother power delivery and a more refined driving experience.
Heavy Gauge Steel for Robust Chassis Support
Constructed from heavy gauge steel, this crossmember serves as a solid link between the frame rails, preserving chassis stiffness. The sturdy steel resists bending and warping even under the torque loads of an LS engine, while a protective finish helps ward off corrosion. This combination of material strength and surface protection extends the service life of the component, ensuring it remains a dependable support point in your powertrain. Over time, the reinforced rail connection helps retain the original handling balance of your classic Impala.
Direct Bolt Fastening for Effortless Fitment
Designed to match factory mounting holes, this crossmember bolts directly to the frame rails without welding or fabrication. Using the stock drill pattern allows you to reuse existing hardware, eliminating the need for extra brackets or studs. This straightforward approach cuts installation time and complexity, making it accessible for new builders and seasoned mechanics alike. Clear instructions guide you through each step, so you can focus on the engine swap rather than custom modifications.
Superior Rigidity Under Aggressive Driving Conditions
The reinforced design of the Sure-Fit Crossmember stands up to spirited driving by maintaining consistent gearbox support through cornering and acceleration. When a chassis flexes, driveline angles can shift and introduce noise or clutch wear; this crossmember locks the transmission in place to prevent those shifts. As a result, it preserves clutch life and keeps power delivery smooth under load. Enthusiasts will appreciate the confidence that comes from a stable mounting platform during demanding driving sessions.
For a related CRS product see our 1958-1964 B-Body Sure-Fit Crossmember (Only). MuscleRods stands behind each crossmember with proven quality and fit.