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I am installing a 605 steering box in my 55 do i need to get a different pitmann arm or can i use my original one off the car it did not have factory power steering ?
I thought the 605 was kind of an outdated steering box. Aren't most guys using the 500 now? I don't know much about them since I have a corvette steering rack in my car.
56 Nomad, Ramjet 502, Viper 6-speed T56, C4 Corvette front and rear suspension
Other vehicles:
56 Chevy 2-door BelAir sedan
56 Chevy 210 4-door sedan
57 Chevy 210 4-door sedan
1962 327/340HP Corvette
1961 Willys CJ3B Jeep
2001 Porsche Boxster S
2003 Chevy Silverado 2500 HD Duramax
2019 GMC Sierra Denali Duramax
thats common with the 605 box,most guys today go with the 500 box elimates play and is much tighter,feels like a new car. I made the switch 2 months ago from the 605 to the 500,the 605 is too easy to turn the 500 takes a little more effort and seems to turn shorter
The CPP500 box is a brand new clone of a Delphi 670 box, with a custom housing to mount to a 55-57 frame, and a custom sector gear so you can use a stock pitman arm. It is made in China by a company that makes OEM steering boxes for Mercedes among others.
The Borgeson box is a real Delphi 670 box that has been modified with a fabricated and welded on lower housing to fit a 55-57 frame. It also has a custom sector gear so you use the stock pitman arm.
Delphi 670 boxes were used in Tahoes around 2000-2002, maybe longer. Also on Jeep Cherokee, maybe Liberty, similar time frame.
I've never heard anything truly bad about either box. They are different ways of doing the same basic design. They have both been on the market for 5-7 years, maybe longer, they aren't a new deal any more. Header clearance, etc. should be almost identical.
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