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10-24-2024, 02:27 PM | #1 |
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Join Date: Aug 2005
Location: Clovis, Ca
Posts: 134
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steering box spline size??
Trying to swap an aftermarket column into my 63 C10. It has a power steering box from a 1971 or 72 that I put on years ago. The new column is double D style so I ordered a D to 3/4"-36 adapter thinking that would be the one. When I popped the old rag joint off, the steering box spline looked different than I had thought. It has too flat sides so it is tough to count the splines but it measures around .800 and the adapter definitely doesn't fit. Any ideas what I'm looking at? Thanks
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10-25-2024, 01:17 AM | #2 | |
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Re: steering box spline size??
Quote:
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Richard 1972 K10 Custom Deluxe SWB Fleetside My build https://67-72chevytrucks.com/vboard/...d.php?t=800746 |
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10-25-2024, 02:27 PM | #3 |
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Location: Temple City
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Re: steering box spline size??
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10-25-2024, 06:10 PM | #4 |
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Re: steering box spline size??
I put what was reported to be a 81 2wd suburban box in and the joint I used was 3/4 x 30
13/16x36 was too large FWIW my original '64 manual box is 3/4-36 and the rag joint that was on the early 70s column I initially used was also 3/4-36 . Last edited by leegreen; 10-25-2024 at 06:26 PM. |
10-26-2024, 12:26 AM | #5 |
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Re: steering box spline size??
Cannot say for sure. Box I used is for 68-76 2wd. I think it was the same as my original 4wd box. Just to note, the factory tilt column is 3/4"x 36 spline.
Edit- The PSC box (what I used) for 80-93 2wd or 4wd with crossover is listed as 3/4"x 30 spline
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Richard 1972 K10 Custom Deluxe SWB Fleetside My build https://67-72chevytrucks.com/vboard/...d.php?t=800746 Last edited by Richard; 10-26-2024 at 12:33 AM. |
10-25-2024, 06:14 PM | #6 |
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Join Date: Aug 2005
Location: Clovis, Ca
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Re: steering box spline size??
Seemed like that might be the case so I ordered one before I saw your reply. I didn't see any with dampners. I was also thinking about drilling for a pin or bolt on the column side, unless that is supposed to be free to slide. It's an amazon column and didn't come with any instructions.
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10-26-2024, 12:21 AM | #7 | |
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Location: Southern California
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Re: steering box spline size??
Quote:
Not sure on your column so will not comment about the pin.
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Richard 1972 K10 Custom Deluxe SWB Fleetside My build https://67-72chevytrucks.com/vboard/...d.php?t=800746 |
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10-27-2024, 10:39 AM | #8 |
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Join Date: Jun 2019
Location: Chehalis, WA
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Re: steering box spline size??
2WD PS boxes, I think...
70 - 76 is 13/16", 30 splines w/ 1 flat (36 spline coupler) 80 - 86 is 3/4", 25 Splines Last edited by Willshook; 10-27-2024 at 10:52 AM. |
10-27-2024, 09:52 PM | #9 |
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Location: Southeast Michigan
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Re: steering box spline size??
'67-'76 C10/20/30 used 13/16" - 36 spline input shaft
'77-'91 C/R10/20/30 used 3/4" |
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