Power Steering Box Saginaw 700 12.7:1 Ratio

The Power Steering Box Saginaw 700 12.7:1 Ratio from BORGESON is purpose-built for classic and custom vehicle restorations where modern steering responsiveness meets vintage aesthetics. This recirculating-ball steering box serves as the core steering component for drivers who demand precise input-to-wheel response without sacrificing the authentic feel of period-correct hardware. Whether you're building a street rod, restoring a muscle car, or retrofitting a classic truck with improved drivability, this Saginaw 700 unit delivers the steering geometry that separates a truly dialed-in build from an afterthought.

At its core, the 12.7:1 ratio means the steering wheel rotates 12.7 turns lock-to-lock—a ratio preferred by drivers who value highway stability and reduced steering effort over tight autocross maneuverability. The recirculating-ball design uses ball bearings recirculating through a worm gear and nut assembly, distributing load across multiple contact points for durability and smooth steering feel that power-rack systems cannot replicate. BORGESON's manufacturing maintains OEM Saginaw specifications, ensuring compatibility with period-correct steering columns and shaft splines while supporting modern power-steering pumps and hoses. The unit weighs 29.95 lbs and fits standard mounting pads, making it ideal for frame-off restorations where original steering geometry is paramount.

Restoration enthusiasts and hot-rod builders favor this box for its proven reliability and ability to mate with both classic and modern steering components. The 12.7:1 ratio excels in highway cruisers and multi-purpose classics where driver fatigue matters; steering effort remains manageable even without modern power-steering assist. Installation requires verification of input shaft spline compatibility, mounting pad alignment with your frame, and matching the output shaft taper to your steering linkage. Professional mechanics often pair this unit with period-appropriate power-steering pumps and hoses for seamless integration into comprehensive suspension and steering upgrades.