'79 CJ5 Steering - Manual -> J20 Power - Pitman Arm? - JeepForum.com
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post #1 of 7 Old 06-23-2021, 01:36 PM Thread Starter
X-Army
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'79 CJ5 Steering - Manual -> J20 Power - Pitman Arm?

We've decided on the J20 power steering gear (variable ratio), along with the Rugged Ridge 18003.10 Steering Box Mount. We ordered the reman gearbox outright, so no used arm on hand.

I've searched around the forum but can't find much on the Pitman Arm for this setup.

Our case ('79 CJ5) has a 2.5" OME YJ spring conversion, slightly longer (greaseable) shackles, and a flipped drag link. With the manual steering still in place, the drag link is almost level, so we probably don't need a drop arm.

What Pitman Arms have y'all used with the J20 power steering box?


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post #2 of 7 Old 06-23-2021, 11:25 PM
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The J20 box is a GM part, a Saginaw 808 used in large cars and trucks. This gives you a wide range of GM pitman arms.

It is physically the same size as the stock CJ Saginaw 800 and, as far as I can recall has the same output shaft. (If I recall correctly the change in 1980 was to the input shaft and hose connections, not the output shaft). In which case any CJ or J20 arm will fit. I would stick with FSJ pitman arms just to be sure, BJ Offroad has some.

I do not believe the output is the same size as on the manual box.

BagusJeep lives in Bali with far too many 4x4s:
1981 CJ7 258ci - Bagusjeep
1984 CJ7 258ci - Puthijeep
1981 J20 258ci - Gladys
1951 Willys CJ3A/MB/M38 - Little Willy
1995 Cherokee 4.0 - CHEROKEE
1980 Land Rover Series III 109" troop carrier - ROVER
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post #3 of 7 Old 06-24-2021, 09:24 AM Thread Starter
X-Army
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Thanks, Bagus. I caught your discussion about the 808 gearboxes on other threads, which is what led me in this direction.

I have found lots of aftermarket Pitman Arms, but most have drops that I don't think I need. I'll do some matching on spline counts and see what I can find based on that and length. I'm sure there's a MOOG part out there that's perfect, and I've also read about some using Astro pitman arms...but that may have a drop, too.

I ordered the steering gearbox for a '76 J20...do you think I might get lucky and get my '79 lower column to fit that input shaft, since both are pre-1980?
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post #4 of 7 Old 06-24-2021, 11:59 PM
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IF you get the right part it will have a 13/16-36 input shaft.

There is a different lower steering shaft and coupler for power steering on a CJ but I would wait until you get the part and have a look at the spline counts and diameter because my information is that the manual box had 36 splines.

BagusJeep lives in Bali with far too many 4x4s:
1981 CJ7 258ci - Bagusjeep
1984 CJ7 258ci - Puthijeep
1981 J20 258ci - Gladys
1951 Willys CJ3A/MB/M38 - Little Willy
1995 Cherokee 4.0 - CHEROKEE
1980 Land Rover Series III 109" troop carrier - ROVER
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post #5 of 7 Old 06-25-2021, 12:03 AM
BagusJeep
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For pitman arms you need to identify large GM cars of the same period with the 808 and look at those arms, most of them are flat. then compare specs.

BagusJeep lives in Bali with far too many 4x4s:
1981 CJ7 258ci - Bagusjeep
1984 CJ7 258ci - Puthijeep
1981 J20 258ci - Gladys
1951 Willys CJ3A/MB/M38 - Little Willy
1995 Cherokee 4.0 - CHEROKEE
1980 Land Rover Series III 109" troop carrier - ROVER
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post #6 of 7 Old 06-30-2021, 03:42 PM Thread Starter
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Quote:
Originally Posted by BagusJeep View Post
IF you get the right part it will have a 13/16-36 input shaft.

There is a different lower steering shaft and coupler for power steering on a CJ but I would wait until you get the part and have a look at the spline counts and diameter because my information is that the manual box had 36 splines.
The remanufactured steering box showed up today. It's CARDONE part 27-6529, for a 1976 Jeep J20.

Input shaft - 13/16" diameter, 32 spline
Output shaft - 1 3/16" diameter (at spline start), 32 spline.

The input shaft has one large flat; the output has small four flats at 12, 3, 6, and 9:00.
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post #7 of 7 Old 07-01-2021, 04:33 PM
CSP
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You all are making this way too difficult.

Use a pitman arm for a CJ with power steering. The CJ output shafts are the same as the J-truck box.

Use a CJ power steering bell coupler as well. You don't need the entire lower shaft. The manual bell coupler is for a 3/4" input shaft.
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