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Opinion Please - steering box

Discussion in '1965-1970 Shelby Mustang GT350 & GT500' started by Texas GT350, Feb 18, 2010.

  1. Texas GT350

    Texas GT350 Well-Known Member

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    On my 1966 GT350 clone the steering is very hard to turn and the car wanders at highway speed, I think it is the steering gear and plan on replacing it. I have the following questions:
    1. Is the Flaming River replacement a good choice over stock? Also it comes in 16 to 1 and 19 to 1 ratio, which one is best for manual steering?
    2. With the 42" shaft that goes through the steering column is it hard to change out? I read the article in Mustang Monthly on the change out but they did it with the engine out.
    3. Should I just opt for the rack and pinion change out and a new steering column?

    Any opinions would be welcomed and if you have changed out the steering gear any advice too.

    Thanks,
    Ron
     
  2. shlby66

    shlby66 Well-Known Member

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    Re: Opinion Please

    Just have the stock steering box rebuilt. You don't have to spend big bucks
    on the Flaming River piece ( not too many success stories there ) or the
    pricey rack and pinion set ups, unless you feel the need to spend more
    money.

    Just make sure you check out all your other front suspension and steering
    pieces to make sure they are up to the job. A good front end alignment
    be on your list and what condition are your tires? Should be able to get the steering box out without too much hassle. Got the maintenance manual?
     
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  3. zrayr

    zrayr Well-Known Member

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    Re: Opinion Please

    above post is 100% right. Just have the steering box rebuilt. This guy did mine & at a reasonable price too. You won't believe the dramatic difference that will make.

    http://www.stangerssite.com/


    and, as mentioned above, every part of the steering linkage should be examined closely by someone who knows these old cars and replaced as needed.

    Z. Ray
     
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  4. SHELB66

    SHELB66 Member

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    Re: Opinion Please

    I would hold off on rebuilding the box until the rest of the suspension has been checked. As mentioned above, there are so many other suspension components that can affect steering. My '66 Hertz was impossible to steer. It badly needed an alignment but that could not be done until some of the suspension parts were replaced due to age/wear (primarily upper and lower control arms along with ball joints). After all of the repairs were done, steering resistance returned to normal. It's like driving a different car. My box was never touched. This may not be the same in your case but worth looking into. Good luck!

    Craig R.
     
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  5. Texas GT350

    Texas GT350 Well-Known Member

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    Re: Opinion Please

    Thanks for the great advise. I will have the unit rebuild, sounds like the best way to go. I will go over the front end and check, according to the records the front ball joints (upper and lower) were just replaced. I am not sure about the tie rod ends, idle arm, etc but I will check them all. I will replace what I can in the steering column while it is out.

    Part of the problem with the hard steering I believe is in the alignment, the wheel will not return to center on its own when turning left or right and must be put back. I think the camber is off but not sure. I would start with an alignment but you can feel the slack (loose feeling on center) in the steering wheel.

    The previous owner gave me a Haynes automotive repair manual that seems a little vague on removal and installation of the steering gear especially the part about checking steering gear preload. It shows using a inch-pound torque wrench but does not give the amount of torque that should be applied.

    On the alignment I am not sure where to take the car, I am in Houston and would thing that most of the alignments done at Goodyear and such would not be great, I have used a place called Cotton Brothers in the past, and old fashion sort of place that have a lot of experience.
     
  6. rsimkins

    rsimkins Well-Known Member

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    Re: Opinion Please

    Texas GT350,

    Please be aware that the Pitman arm and idler arm are unique to these cars (S1MS 3590-A, Steering Gear Sector Shaft Arm; S1MS 3734-A, Steering Idler Arm). If the alignment shop suggests that the idler arm needs to be replaced because it is worn, have them rebush it (Mustangs Unlimited sells the bushing for about $10, other Mustang specialty companies may as well).
     
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  7. 2+2GT

    2+2GT Well-Known Member

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    Re: Opinion Please

    On my 1966 GT350 clone the steering is very hard to turn
    This is normal on a GT350, so I'd have to ask how close this "clone" is to OEM.

    and the car wanders at highway speed,
    This is alignment or worn parts, or both.

    I think it is the steering gear and plan on replacing it.
    Not unless the gearbox is shot. Reconditioning is as good as new if the gears and bearing races are not damaged.

    I have the following questions:
    1. Is the Flaming River replacement a good choice over stock?
    Fine, if you have no choice.

    Also it comes in 16 to 1 and 19 to 1 ratio, which one is best for manual steering?
    Shelbys always had the quicker 16:1 box. Harder, but quicker. The 19:1 was for little old ladies. Shelby used special pittman and idler arms in 65-66, making it even quicker.

    2. With the 42" shaft that goes through the steering column is it hard to change out? I read the article in Mustang Monthly on the change out but they did it with the engine out.
    The box is easy. Remove the pittman. Remove the driver's seat. Remove the steering column. Remove the export brace. Remove the LH valve cover. Remove the #7 and #8 spark plug. Remove the steering gearbox.

    3. Should I just opt for the rack and pinion change out and a new steering column?
    Waste of money, IMHO, magazine articles notwithstanding.

    Any opinions would be welcomed and if you have changed out the steering gear any advice too.
    I have done them, I recited the above procedure from memory.
     
  8. zrayr

    zrayr Well-Known Member

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    Re: Opinion Please

    if you have wider tires the steering will be harder. For me there was a dramatic difference going from 225/60-14's to 195/70-14's.

    Z. Ray
     
  9. Texas GT350

    Texas GT350 Well-Known Member

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    Re: Opinion Please

    Again thanks for all the good advise. The tires currently are 205-70 14's not an overly large tire I would not think. The tips on the removal of the steering gear was great, I hope I will not have to get to that point. The advise on the pitman arm bushings was good too, I think I will buy one to take with me just in case. I plan on taking it to the alignment shop this week, I will let you know what I find out.
     
  10. SFM6S087

    SFM6S087 Well-Known Member

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    Re: Opinion Please

    Texas GT350, If you find a good alignment shop in Houston that understands these cars, please come back here and let us know. I live next door in Pasadena and may need that service some day.

    Thanks,
    Steve
     
  11. Texas GT350

    Texas GT350 Well-Known Member

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    Re: Opinion Please

    Steve,

    Will do, I plan on going to Cotton Brothers, they worked on my 1966 Mustang GT many years ago and did a great job. They use to be more old school and not so much on fancy equipment. It would be nice if I had the specification for the alignment, I see that Branda list the specs for the alignment after you move the upper A arms 1" down.

    Ron
     
  12. s2ms

    s2ms Well-Known Member

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    Re: Opinion Please

    If you need to replace the idler arm bushing you might consider a roller bearing kit.
     
  13. Texas GT350

    Texas GT350 Well-Known Member

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    Re: Opinion Please

    Good advice, I just ordered a new idler arm and pitman arm from Branda today to take with me just in case one of them is the problem, I did not want to get caught short and end up leaving the car at the shop while the parts come in.

    I looked at the suspension last night and overall it looks pretty good, I noticed that the upper ball joint that was just replaced was missing the cotter pin, I guess I was lucky driving it back the 1200 miles from Florida, that would not have been fun if it came undone.

    Ron
     
  14. rsimkins

    rsimkins Well-Known Member

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    Re: Opinion Please

    I have one of those kits on the Hertz car. Been looking for a source for more for as while now. Where can I get a kit?
     
  15. zrayr

    zrayr Well-Known Member

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    Re: Opinion Please


    NPD has them.


    Z.
     
  16. Texas GT350

    Texas GT350 Well-Known Member

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    Re: Opinion Please

    Good advice, thanks!
     
  17. 67200F5A02206

    67200F5A02206 Well-Known Member

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    Re: Opinion Please

    More positive caster will help with the "wandering" problem. Unfortunately it also increases the steering effort.

    I have driven a lot of Mustangs with 195 series front tires and manual 19:1 steering and they are a handful to turn. I have also moved a 16:1 PS car around with the engine off and it is all I can do to turn the steering wheel at rest.

    With a 16:1 box you will find that you will be able to steer or shift but not both at the same time.
     
  18. zrayr

    zrayr Well-Known Member

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    Re: Opinion Please

    anytime you want to watch a skinny old dude (me) perform this feat of strength swing on down to TX and I'll demonstrate how it's done in my 1966 Shelby Mustang: 16:1 steering, no power steering needed (girlie men need not apply).

    Z. Ray
     
  19. 1966GT350-5

    1966GT350-5 Active Member

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  20. 2+2GT

    2+2GT Well-Known Member

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    Re: Opinion Please

    I did, in my daily driver from 1974-1997. 15 years of that was with the Shelby quick steer added.
     

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