Hi Everyone, I have a 68 that I replaced the power steering pump last week and now when i went to take it for a drive ( with the top down)and there was no power steering. I was dying to drive the car with the top down and I couldn't do it. What else would cause that problem ? THe oil level was fine in the pump. This was the first nice day in New York to take the car out with my KIds and I had to cancel. So if some one knows what else could cause the problem let me Know. Thanks everybody. Luis I have a 1974 New Yorker and i would like to know what parts would fit my 68. It has a 440. Is it the same as mine? I've heard that some are big blocks and small blocks. The ac,brakes,booster,PS,radiator, heater system or anything else. I know the tranny is different. THanks Luis --- W Bell <cbody67tx@xxxxxxxxxxxxx> wrote: > On the more modern power steering pumps, the > "orifice" is in a screw-in fitting near where the > pressure line screws into it on the back of the > pump. If the orifice is too large, it can cause an > overboost situation where the wheel will turn if you > breathe on it the wrong way. It's the size of the > orifice that determines the amount of boost the > system has. On the Saginaw pumps, there were > basically two diameter orifices--one for cars and > one for light trucks, with the cars having the > larger/higher boost orifices, at least back in the > 1960s, and the heavier cars probably having a > slightly larger one than the lower level and lighter > weight vehicles. Just a few thousanths of an inch > difference in the hole diameter can make a bigger > difference than you might suspect. > > The distance of the orifice from the pump may well > have something to do with reducing a harmonic caused > by the fluid flow in the hose, so making sure all of > the dimensions are "dead on" from the production > hose is important. > > Just some thoughts, > W Bell > __________________________________ Do you Yahoo!? Yahoo! Photos: High-quality 4x6 digital prints for 25¢ http://photos.yahoo.com/ph/print_splash