[1970TA]

Will a power steering box off a 70 firebird fit on a 70 GTO?

[2002Z4CSS]

If there both the GM 800 gear box it should fit fine.

[PMDRACER]

According to NAPA Online, the part numbers of the steering box for both cars is the same.

[1970TA]

Thanks

[Shiny]

Check to see if turning radius is the same.

[PMDRACER]

Actually, the turning radius will not change, that is dictated by the stops between the lower a-arm and the spindle. What can be different between the two steering boxes is the number of turns lock-to-lock. 1970 was the changeover year from the slow +/- 4 turn box to the quicker 2-3/4 turn box.

[Shiny]

PMDRacer I'm sure you are right about the stops, but the specs I have seen online say the pitman arm lock to lock radius may be smaller on the firebird box. If I remember right, there are stops for the piston travel inside the box.

In 70, they have a variable-ratio that starts slow near the center, then gets faster at the extremes..not quite the same as the fixed "quick-ratio" boxes but still fewer turns.

Here's one reference I found for chevies. Not sure if Pontiac did the same, but this says camaro box was 37 degrees radius and chevelle was 43:

http://www.chevelles.com/techref/shea_3.html

If Pontiac was the same, then I think this means the GTO would not turn as tight with a Firebird steering box.

But I'm probably all mixed up if the catalogs show the same part number.

[thadeal4real]

Originally Posted by Shiny

PMDRacer I'm sure you are right about the stops, but the specs I have seen online say the pitman arm lock to lock radius may be smaller on the firebird box. If I remember right, there are stops for the piston travel inside the box.

In 70, they have a variable-ratio that starts slow near the center, then gets faster at the extremes..not quite the same as the fixed "quick-ratio" boxes but still fewer turns.

.

not a good idea without codes and or modification (internal to box)