LS Transmission Crossmember for Chevrolet Tri-5 Frame
If you are converting a 1955 to 1957 Chevrolet Tri 5 chassis for an LS engine, keeping the gearbox in place is critical and this crossmember locates the transmission at precise factory angles beneath the original frame rails. Cast from premium steel with reinforced welds, it resists twisting under heavy torque loads and preserves driveline angles to cut vibration and joint stress. Installation uses factory frame holes on non convertible bodies for a bolt in fit with basic tools and supplied hardware. This plug and play design maintains factory ground clearance and ride height while ensuring a direct fit so builders avoid trimming and get consistent shift quality from day one.
Precision Alignment for LS Powertrains
The Sure-fit crossmember positions the LS gearbox at factory specified angles relative to the frame rails of a 1955 to 1957 Chevrolet Tri 5 chassis. This precise orientation reduces driveline vibration by keeping universal joints within their ideal range of motion. By preserving original driveline geometry, coupling stresses are lowered and premature wear on joints and bearings is prevented. Consistent angle maintenance under load ensures shift quality remains smooth throughout the rpm range. Drivers will notice less noise and a refined response as chassis geometry remains stable during acceleration and braking.
Robust Steel Construction for Torque Resistance
Crafted from premium steel with reinforced welds at key stress points, this crossmember absorbs high engine torque without bending or cracking. The heavy gauge material spreads loads evenly across the frame rails, preventing localized fatigue even under repeated hard launches. Its rigid design protects both the chassis and transmission housing from distortion, extending the service life of mounting points and bushings. Whether on the street or at the drag strip, durability remains consistent mile after mile. Built to handle the power output of LS engines, this component ensures reliable support under continuous use.
Factory Frame Integration with Original Ground Clearance
Every contour of the crossmember matches the frame profile found on non convertible 1955 to 1957 Chevrolet models. It installs flush beneath the chassis to preserve factory ground clearance and ride height without any trimming or grinding. This tailored fit allows the undercarriage to maintain its classic appearance while accommodating modern transmissions. Builders can retain the authentic stance of their Tri 5 while benefiting from hidden reinforcement that does not alter the vehicle s lines. A perfect marriage of vintage style and modern performance is achieved through precise engineering.
Streamlined Bolt In Installation for Reduced Setup Time
The design uses existing frame holes and all required hardware is included to simplify the install. No cutting drilling or welding is needed allowing a bolt in fit with basic tools in a fraction of the usual time. Detailed instructions guide builders through each step and help avoid common fitment errors. By eliminating complex fabrication and bracket work, labor costs drop and the project moves quickly from chassis prep to final tuning. Enthusiasts and professional shops alike can complete the swap with confidence and minimal downtime.
Engineered for a precise fit and reliable support for your LS swap.