saginaw info

[alf]

Sorry for the cross posting but not eveyone is cross-pollinated

Okay guys here is the mother load of info on Saginaw boxes. Happy reading.


http://www.chevelles.com/techref/ftecref29.html
http://www.chevelles.com/techref/ftecref29.html
http://www.chevelles.com/techref/ftecref29.html

Not sure what is meant by "effort", "t-bar size" or "travel" on the spec
pages. Is travel the figure we need to use in determining the number of
turns lock to lock? I do know that AGR's SB2 box that has variable ratio is
16-13:1.


Kevin

 

[Poser]

Way to go alf...

Fantastic info!!!

Thanks!!

-Steve

 

[alf]

I reviewed this info in detail last night and was able to glean some info:

1. The stearing ratio is the number of degress you rotate the steering wheel to produce a 1 degree rotation in the output shaft. Lower the ratio the quicker the steering.

2. To determine the number of turns you multiply the ratio by travel by 2 then divide by 360 (r*t*2/360). It appears that the true four turn boxes are 17.5:1 ratio with about 41-43 degrees of travel.

3. Before 1977 Saginaw boxes had 13/16" 36 spline input shafts. 1977 and later they are 3/4 by 30

4. Before 1980 they had flare fittings, after they are o-ring.

5. I believe Effort equates to steering feel. The lower the number the softer the feel. The higher the number the firmer it will feel. This number correlates to the t-bar size as well.

Casting numbers don't dictate the performance characterisics of the box. So don't be fooled by people saying just go get a box with casting # 5691676 unless it is coming off a vehicle that has the steering characteristics you are looking for.

If anyone believes otherwise let me know.


Happy hunting


ALF