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77nighthawk wrote:I don't know what the s10 ratio is, but I know the Saginaw 525 gearbox has the same dimensions as my power gearbox did, and bolted right in place, using the power steering pitman arm. The Saginaw 525 is something like 24:1 ratio, 6 turns stop to stop. Not the quickest by any means, but a direct bolt in for my application. You can buy one from speedway motors, for about $250 US. They also have some pitman arms, but I don't know if any fit Monza or Vega. I'll post links in a little bit. Brad
Here's the one for my swap:
viewtopic.php?f=10&t=43821
Here's the one for Speedway Motors, direct to gearbox, looks like the price went down a little:
http://www.speedwaymotors.com/1965-1991 ... ,6723.html
cosvega76 wrote:<br abp="768"><br abp="769">Brad,<br abp="770"><br abp="771">I'm curious how far up the spline that power steering pitman arm fit on that manual box compared to the power steering spline. The blueprints I'm looking at for '68 - '74 Novas (which would use the same steering boxes) show a small end of taper dimension for the spline of 0.992" tip-to-tip and 1.061" valley-to-valley for the manual box vs. 1.100" tip-to-tip and 1.181" valley-to-valley smaller end of the spline taper for the power box. I would think a spline dimension of .100" larger would place the pitman arm higher on the spline. Whether that would affect the nut position and clamping force, or the side-to-side alignment of the centerlink, I don't know.<br abp="772"><br abp="773">Chuck77nighthawk wrote:I don't know what the s10 ratio is, but I know the Saginaw 525 gearbox has the same dimensions as my power gearbox did, and bolted right in place, using the power steering pitman arm. The Saginaw 525 is something like 24:1 ratio, 6 turns stop to stop. Not the quickest by any means, but a direct bolt in for my application. You can buy one from speedway motors, for about $250 US. They also have some pitman arms, but I don't know if any fit Monza or Vega. I'll post links in a little bit. Brad<br abp="762"><br abp="763">Here's the one for my swap:<br abp="764">http://forums.h-body.org/viewtopic.php?f=10&t=43821<br abp="765"><br abp="766">Here's the one for Speedway Motors, direct to gearbox, looks like the price went down a little:<br abp="767">http://www.speedwaymotors.com/1965-1991-GM-525-Manual-Steering-Box-w-3-4-30-Input-Spline,6723.html
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