I'd like to add this link. A lot of guys are switching over to
quick ratio box's and Jim Shea has some great info on different
box's, hoses, etc. This is for A & F body rides but a Saginaw 600
or 608 [80mm dia bore] will go in. Our box's used to be
Saginaw model 800's but are now referred to as model 700's
[70mm dia bore] or 708 for bigger rides [80mm dia bore].
I use a model 700 Alpha code YA out of late 80's Monte
Carlo SS's and it's worked really well. What one should
know for instance is that F body box's will have less pitman
arm travel distance and take more effort to turn, where
A body box's though allowing more pitman travel in
the end, might cause tires to rub on a-arms, etc, so
one needs to choose what steer box one wants carefully.
I use Open Office to view these articles. I think before one
goes changing a steer box to fast ratio, one should know
which one might work best for the app. There is a lot
of other good info in this link and I hope people here
will take a look at some of the articles.
http://jimshea.corvettefaq.com/?page_id=5
HTH's.