I have a worn 24:1 Manual Steering Box and would like to switch it to a 20:1 Manual Steering Box. Is there a way to tell the difference from the exterior? Did they come in certain cars? (Donor) or was it an option? -Thanks Dan

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1964 Dart GT

20:1 worm gears were aftermarket for the longest time, the 16:1 boxes were stock on the big block A-body cars...Not too long ago the 20:1 gears weren't available anymore unless NOS, rumors had it that some new ones came out and were chinese (soft material used in the worm). I know Firm-Feel hasn't had any for a few years now.

I will say though, in a Pre-73 A-body with a slant 6 the 20:1 box is a good upgrade to steering....

Good luck on the hunt. (I know that manual steering boxes in general in junkyards are not easy to find anymore, period...)

-D.Idiot

You can figure it out by seeing how many turns lock-to-lock on the steering gear.

I believe the 24:1 is 4.5 turns.

20:1 is 3.5 (from memory, could be wrong....)

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Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

Ed- My 24:1 is just over 5 turns to stop! Adjusted all the way in and still alittle sloppy.
I'll keep scrounging around, we still have a few good yards in my area.

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1964 Dart GT

Found this during my search:
http://www.jegs.com/i/Mopar-Performance ... 2/10002/-1
Anyone ever use one of these? is this the Chinese repop? Price is a bit stout!

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1964 Dart GT

Stock 24:1 is about 5.5 turns, 20:1 is 4.5 turns, 16:1 is 3.5 turns. For the money of that Jegs/MP part, you can almost buy a brand new Flaming River 19:1 box. I have one of those and they work very well (comparable to a freshly rebuilt 20:1 Mopar).

Lou

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Home of Slant6-powered fun machines since 1988

Flaming River 19:1 box? I haven't seen that, 16:1 is all they show on their site. Do you know the part#?

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1964 Dart GT

Flaming river only shows the 16:1 manual box...they only are offering the 20:1 boxes in GM/BOP platforms. I also see that they no longer offer the mopar power steering box that had some quality control issues a few years ago...

-D.Idiot

I recall reading that the 16:1 label was misinformation, the box behaved lock-to-lock as if it were a 19:1. It caught on and people have called it 19:1 out of habit, but they are referring to the 16:1 labeled box.

I have seen 16:1 and 19:1 listed for that same (only one) Flaming River box. It has pretty close to 4.3 turns lock-lock, so I am betting it is 19:1. It doesn't feel as tough to turn as my Mopar 16:1 either.

Lou

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Home of Slant6-powered fun machines since 1988

Dan, a call to Jegs and a few questions should get the answer you need. The ad says Mopar Performance, was that where the Chinese junk came from?
More knowledgeable folk on the forum,please speak up.

BC

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'64 Dart GT convertible, 64 Dart 170 2-door post sedan in faded blue and rust (the Az Dart) & a sixty THREE Dart 170 2-door post sedan in faded blue and rust. (future project)
Early Dart Disorder (EDD) is real, and I've got it!

Yes, sadly The guy at Flaming River thought I was an idiot asking if the 16:1 was really more of an 19:1, but I think he was reading text right out of their catalog!

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1964 Dart GT

Last year (or was it '11) Mopar Performance and I think Steer and Gear got a "new" batch of 20:1 worm gear sets, since these had been out of stock for a few years (I think Midi got the last real one from Firm Feel and they no longer offer 16 or 20:1 any more)...After people jumped on the new batch there were sporadic reports about the material being 'softer' and the gears falling out of adjustment to easily and tolerances not being correct.

Although in the beginning there were some QA issues with some of Flaming River's stuff, if their 16:1 is a 19:1 and it holds up to Lou's suspension mods and abuse, it should work OK in a pre-73).

-D.Idiot

Which pitman arm does the flaming river use (early or late)?

And I forgot the cutover date between the early and late arms.........

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Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

I bolted the FR box right into my '66 Valiant w/stock small sector pitman arm. Do not expect FR to answer your questions in an informed way, unless you somehow get to the engineer(s) who designed the box. I have never gotten a satisfactory answer out of anyone on this.

Lou

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Home of Slant6-powered fun machines since 1988