I swapped in a 1998 Vortec 454 with a 4l80e into my 1968 GMC swb truck recently. As soon as I swaped in the 7.4l Vortec in my truck my steering box started leaking. I kinda have a theory but not sure- I used the powersteering pump from the 7.4l motor which was had a hydroboost setup. I have read that the hydroboost powersteering pumps have more pressure and thats what caused the leak...
But on the flip side- I did just swap in the front suspension clip from a 1979 5/8's ton truck with included this steering box, it could have had the leak before..
So does the powersteering pump from a hydroboost system have more pressure?
It only leaks when I shut it off, but it leaks alot out. I have never rebuilt a steering box before, are they pretty simple? And if I did rebuild it- replace a seal or whatever is causing it to leak.... will it leak again because of the powersteering pump????
Thanks----
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