A word about 800 series pitman arms...
78-88 G-body (with RPO NY8, the 800 series box) use the same p/n pitman arm, GM p/n 7837648 (was p/n 7829470). The engineering/casting number is 7828464. Now, I've seen these cast numbers followed up with another number as well. Anyone know what this number is for? Glancing at it, it looks like a + symbol in between, but close inspection shows these are 4 directional arrows. WTF? The number I have as far as NOS part is 6. I've seen 5 and 6 so far. The factory setup I haven't checked as there's blue paint on the arm, plus I haven't crawled under the car to even check that. I wonder if it's a foundry mold number or something.??.
Interestingly, I've had this pitman arm (and the entire piece by piece steering linkage setup) for about 312 years. It's lived in the closet and under climate controlled conditions all these years I've had it. Interestingly, I got it from ebay, and the bag-o-nuts that came with it were a tad rusty INSIDE the package when I got it. But the arm itself barely has any discoloration on it. Easy cleanup for sure. I can't imagine what it would look like if it were in a damp basement for the last 25 years or so.
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Always be on the look out for this casting number 7828464 when trying to find an 800 series arm for most of your G-body needs.
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And the underside. It's about 1.5" drop, and approximately 6.25" center to center.
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