500 Series Power Steering Conversion Box 1958-64 Chevy Fullsize

Part #
CP50003-2
In Stock
$449.00
1958-64 Chevy Fullsize, Fits Most Radiators, Column Shaft Modifications or Replacement Needed, 14-1 Ratio, 3.5 Turn to Turn, 34 x 30 Splined
The CP50003-2 500 Series Power Steering Conversion Box 1958-1964 Chevy Full Size features late-model steering technology with a 14:1 ratio and all-new components. This box bolts directly to your frame, removing the need for extra brackets or adapters. It’s engineered to enhance your driving experience, delivering a modern, tight steering feel for improved handling and control in your Chevy Full Size.
More Information
Product Name 500 Series Power Steering Conversion Box 1958-64 Chevy Fullsize SKU CP50003-2
Gear Box Type Power Ratio 14-1
Pitman Arm Included No Pitman Arm Shaft Size 1" GM with 32 Splines and 4 Master Keys
Input Shaft 3/4 x 30 Pressure Port 11/16 x 18 Flare (Located Closest to the Engine)
Return Port 5/8th x 18 Flare (Located Closest to the Input Shaft) Reccomended Gallons Per Minute 2.8-3.5 (3.0-4.0 if Runnig A HydraStop)
Reccomended Pressures 1,100-1,250 (1200-1300 If Running a HydraStpo Also) New Or Rebuilt Gearbox New
Turn To Turn 3.5 Warranty Yes
Prop65 Yes Brand CPP 500 Series
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Customer Questions
Do I need to buy a special pitman arm to use this box (Part CP50003-2)?
The CP50003 steering box works with your original pitman arm off of the manual steering box. But we do recommend upgrading to the 6164SLK linkage kit if it shows signs of wear.
Will I have to notch my radiator to be able to use your gear box?
CPPs gear box works with 90% of original and aftermarket radiators. If your radiator sits lower than stock or is a larger capacity, there is a chance it will require being notched to prevent interference. 
Can I use my stock rag joint to hook it up?
You will need to modify or replace your steering shaft to install the 500 Series box. We offer an RJC-605L that will allow you to modify your stock shaft or you can replace it with a shortened steering shaft 55020/55022 depending on your application.&...
How do I know which is the pressure port?
The pressure port is the larger, 11/16-18, port and sits higher on the casting.
Is 500 steering box more narrow than stock 69 impala
Our CPP 500 Series Power Steering Gearbox will be narrowed a bit at the adjusting sector section but overall pretty similar in size compared to the original. Please call our tech line if you need measurement. 
My car is a stock 1960 Impala convertible, 348 engine, floor shift. Please explain: “Column Shaft Modifications or Replacement Needed” If needed, do you sell the necessary parts? Thanks.
If you have a the factory column you will need our RJC-605S and 55020-B or ...
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