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Discussion Starter · #1 ·
I am trying to figure out which steering box to order...I was considering an upgrade to a manual rack and pinion unit, but from everything I can find its endless issues with reduced turning radius and bump steer from every kit out there...which is fine, I have nothing against the factory steering box...except mine is 53 years old and needs to be replaced or rebuilt. Rock Auto has a couple options(same boxes carried by CJ Pony Parts and who knows who else) for $211 with no core("new")...or $137.00 with a core("remanufactured") One box in a 22:1 ratio and one box in a 16:1 ratio. This leads me to some questions...from what I have read the manual mustang box is supposed to be either 19:1 or 16:1 with the falcon box being 22:1(My assumption here is that they are selling the falcon boxes...at least as far as ratio goes).

Which box would you suggest for my setup?

-Manual Steering
-14" Steering Wheel
-16" wheels with a 215/55/16 tire

The car is being built for spirited street driving with maybe an occasional track day. I know that the difference in lock-to-lock turns will be roughly 1 full turn...but as an example...right now with the stock manual box(19:1 ratio?) when pushing the car around the parking lot I can easily turn the stock steering wheel(15") while pushing the car by the a-pillar(cant be moving more than 2mph doing this) to maneuver it wherever I need it, which leads me to believe maybe I can deal with a numerically lower ratio...but these are also stock wheels with whatever puny tire size they come with....so suggestions are appreciated. An aftermarket under-the dash EPAS unit is not out of the question...at least for speeds under 10mph(I would have it shut off for higher speeds)
 

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My car came with 19.9 to 1, I converted it to the 16 to 1 manual and I enjoy the fewer turns to move about but it takes a little more effort at low speeds like in a parking lot. Main thing was to have a more precise box and for it to be right if I converted to power steering later on. EPAS isn't something I would personally do but the sixteen to one box would make that more enjoyable as well.
 

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Discussion Starter · #3 ·
My car came with 19.9 to 1, I converted it to the 16 to 1 manual and I enjoy the fewer turns to move about but it takes a little more effort at low speeds like in a parking lot. Main thing was to have a more precise box and for it to be right if I converted to power steering later on. EPAS isn't something I would personally do but the sixteen to one box would make that more enjoyable as well.
I dont care for the idea of power steering either...the appeal of the electric version is that you can set it to turn off at anything over a given speed and leave you full-feeling manual steering when you want...not so much with hydraulic.
 

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I am trying to figure out which steering box to order...I was considering an upgrade to a manual rack and pinion unit, but from everything I can find its endless issues with reduced turning radius and bump steer from every kit out there...which is fine, I have nothing against the factory steering box...except mine is 53 years old and needs to be replaced or rebuilt. Rock Auto has a couple options(same boxes carried by CJ Pony Parts and who knows who else) for $211 with no core("new")...or $137.00 with a core("remanufactured") One box in a 22:1 ratio and one box in a 16:1 ratio. This leads me to some questions...from what I have read the manual mustang box is supposed to be either 19:1 or 16:1 with the falcon box being 22:1(My assumption here is that they are selling the falcon boxes...at least as far as ratio goes).

Which box would you suggest for my setup?

-Manual Steering
-14" Steering Wheel
-16" wheels with a 215/55/16 tire

The car is being built for spirited street driving with maybe an occasional track day. I know that the difference in lock-to-lock turns will be roughly 1 full turn...but as an example...right now with the stock manual box(19:1 ratio?) when pushing the car around the parking lot I can easily turn the stock steering wheel(15") while pushing the car by the a-pillar(cant be moving more than 2mph doing this) to maneuver it wherever I need it, which leads me to believe maybe I can deal with a numerically lower ratio...but these are also stock wheels with whatever puny tire size they come with....so suggestions are appreciated. An aftermarket under-the dash EPAS unit is not out of the question...at least for speeds under 10mph(I would have it shut off for higher speeds)
Falcon box has a different case and won’t fit a Mustang..... found that out the hard way with a NOS Falcon box I bought for dirt cheap..... bummer.
22:1 would be a Mustang steering box ratio, considering all the steering gear attached, not just the internal ratio of the box itself.

ex-Global West GM
1991-1995
 

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^^^ Right. The 19:1 box is sometimes called the 22:1 ratio... confusing, ain't it?

I have a 16:1 box, Shelby Quick-Steer, 14-inch steering wheel and 205/65R15's up front and no power assist. Yeah, it's a bit "stiff" when stopped but the minute you're rolling it's fine. One handed cruising not a problem.

PS: I'd contact Dan Chockley (Chockostang) about a rebuilt box vs. any of the el cheapo boxes put together on an assembly line by some gum-chewer making minimum wage.
 

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Discussion Starter · #7 ·
^^^ Right. The 19:1 box is sometimes called the 22:1 ratio... confusing, ain't it?

I have a 16:1 box, Shelby Quick-Steer, 14-inch steering wheel and 205/65R15's up front and no power assist. Yeah, it's a bit "stiff" when stopped but the minute you're rolling it's fine. One handed cruising not a problem.

PS: I'd contact Dan Chockley (Chockostang) about a rebuilt box vs. any of the el cheapo boxes put together on an assembly line by some gum-chewer making minimum wage.
Thanks for the advice...its probably the what I will do. Question on the quick steer...how much of a difference did that make?
 

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Thanks for the advice...its probably the what I will do. Question on the quick steer...how much of a difference did that make?
The Quick-Steer took about 1/2 turn away lock-to-lock. Don't know what YEAR you have, but only available for '65-66, unless somebody has come out with a version lately for newer cars.
 

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Precision? Either box, rebuilt by dan, with a roller idler arm and Good tie rods and tie rod adjusters.

19:1 with the quick steer would be pretty decent me thinks. If you've already got it!
 

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66 manual steering here, took the 19:1 out and went with a 16:1 and love it. Doing a I6 to V8 conversion and rebuilt my entire frunt suspension and steering. No slop, when you turn left, it goes left now. Some advice if you go with a 16:1 box, 1) Chockostang rebuild and 2) Try and find a steering box from a former power steering car and use its box. It should be a 16:1 unit, during its life, was power assisted, so it should not be as worn internally than a 16:1 manual steering box.
 

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Discussion Starter · #13 ·
Thanks for the suggestions guys. Since I have the 19:1 box...a Chokostang rebuild, combined with the Shelby quick steer and the ORP roller idler arm seems like it may be the ticket...but if I do manage to find a 16:1 box before then I will go for that. I am probably getting ahead of myself on that one by a couple months though, still have about 40 hours of metal work to finish up first...then I get to build some type of rotisserie.
 

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Like mentioned above, something the data on steering ratio is related to the overall ratio (steering box and steering linkage) and sometimes to just the box. The 16:1 box will result in a ~21:1 overall ratio (forgot the exact number) with the standard linkage on a 65-66. 67+ steering is actually a little quicker, due to shorter steering arms on the spindle (6.75" vs 7.125", so a 5% difference)

My 65 has the quick steering box, Shelby pitman arms and 70 spindles, for a 18:1 overall ratio. Earlier, the steering was really heavy but now with a properly rebuilt, adjusted and (most importantly) lubricated steering box (basically 100% full with grease, so that the gears push the grease around instead of out of the way) and a roller idler arm, the steering is very nice. Not excessively heavy and reasonably quick. Not like a modern car, but fine nonetheless.
 
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