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73-87 Chevy _ GMC Trucks => Brakes, Frame, Steering & Suspension => Topic started by: brimac50 on December 14, 2010, 11:25:47 am

Title: Power steering box interchange ...
Post by: brimac50 on December 14, 2010, 11:25:47 am

I might be  replacing a sloppy power steering box, on my 1980 3/4T, 2wd.  What newer year boxes , are a direct bolt-in replacement?

Thanks

Title: Re: Power steering box interchange ...
Post by: Captkaos on December 14, 2010, 04:58:05 pm

Generally speaking 1973-80 for standard.  1981-87 for metric. 

Title: Re: Power steering box interchange ...
Post by: brimac50 on December 16, 2010, 10:56:10 am

Do all those years have the same diameter and spline count, on the steering column shaft, or .......  are there some variations?   Also, are all power steering box shafts,  (to rag-joint) , the same?

Title: Re: Power steering box interchange ...
Post by: Tater502 on December 16, 2010, 11:10:19 am

I put the steering box of a 90 4x4 blazer on my 79 4x4 gmc. The only difference is the hose fittings that go into the box.

Title: Re: Power steering box interchange ...
Post by: snibook7537 on December 18, 2010, 05:53:09 pm

I am pretty sure there is a difference between 4x2 and 4x4

Title: Re: Power steering box interchange ...
Post by: beastie_3 on December 18, 2010, 08:00:55 pm

Quote from: snibook7537 on December 18, 2010, 05:53:09 pm

I am pretty sure there is a difference between 4x2 and 4x4

Correct

Title: Re: Power steering box interchange ...
Post by: 1979C20 on December 18, 2010, 09:05:01 pm

I put the power steering box from an 86 4wd burban on my 79 c20. Direct bolt up. Only thing I can tell that is different is the pitman arm I believe. And it makes my trucks turning much more reactive to the wheel and its misaligned slightly to the left, so my wheel is about a 16th turn to the right to go straight. Only thing I can tell. But, the powersteering box may have been replace with a 2wd one on the burban before I got it, I wouldn't know.