CPP 400 Series: The Ultimate Steering Upgrade for Classic American Muscle
When it comes to modernizing the steering feel of your classic Chevy or GMC, CPP’s 400 Series Power Steering Gearbox stands out as one of the most impactful upgrades you can make. Designed as a direct bolt-in replacement for factory steering boxes, the 400 Series delivers improved road feel, tighter steering response, and the confidence you need behind the wheel — whether you're cruising Main Street or carving corners on a weekend run.
... Why Upgrade to the CPP 400 Series?
Modern Steering Feel Without Cutting or Fabrication CPP engineered the 400 Series gearbox to bolt directly into your existing frame mounts. No welding, no grinding, just a clean, straightforward upgrade that instantly tightens your steering.
Quick-Ratio Performance With an updated internal design and a modern gear ratio, the 400 Series delivers:
- Sharper turn-in
- Shorter lock-to-lock steering
- Better high-speed stability
- Reduced play and wander
Built for Durability and Daily Driving: Every 400 Series gearbox is engineered with all-new components, never remanufactured, ensuring a long service life and consistent, reliable performance. They’re built to handle everything from stock wheels to wider modern tire setups.
Compatible With Factory Steering Links:
CPP designed the 400 Series to work seamlessly with factory-style pitman arms and steering linkage. This keeps installation simple and avoids the cost of converting to an all-new steering system.
... Perfect for Popular Classic Builds
Whether you’re building a mild cruiser or a pro-touring street machine, the 400 Series is an ideal foundation for stable, predictable steering. The CPP 400 Series is available for a wide range of GM classics, including:
- 1967–1982 Chevy C10 / GMC Trucks
- 1967–1969 Camaro
- 1964–1972 Chevelle / A-Body
- 1968–1974 Nova / X-Body
- 1955–1957 Chevy Tri-Five
- and many more…
... 400 Series vs. OEM Steering
- Classic steering boxes are notorious for:
- Excessive play
- Slow steering ratio
- Wandering at highway speeds
- Worn internal components
The CPP 400 Series addresses all these issues by giving your classic car or truck:
- A modern, confident steering feel
- Faster response and improved road feedback
- All-new construction (no cores required)
- Better compatibility with performance suspension upgrades
- Pair the 400 Series box with CPP’s steering shafts, rag joints, and power steering pumps for the ultimate bolt-on steering system.
... Installation-Friendly Design: Installing the CPP 400 Series typically requires:
- Basic hand tools
- Your original pitman arm
- Factory steering linkage
- CPP’s recommended power steering hoses or adapters
Most builders complete the swap in a single afternoon, making it one of the highest-impact, lowest-effort upgrades available for classic Chevy/GMC vehicles.
... Built for Today’s Roads
Modern traffic and higher speeds demand more from classic vehicles than ever before. The CPP 400 Series delivers the confidence, responsiveness, and safety you need — all while maintaining the original character of your vintage ride.
