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Old 04-02-2011, 11:45 PM   #1
trapperjack
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67 K20 Rockwell 221 shifting question

T-case was rebuilt professionally by PO. Shifts smooth and easy, except....won't stay in 2wd....in the photo below, in the circled area, should there be a nylon or rubber bushing or something? Everything looks and works well on it except it won't stay in 2wd.
Thanks, ya'll.
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Old 04-03-2011, 11:13 PM   #2
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Re: 67 K20 Rockwell 221 shifting question

Anyone? Ideas?
Thanks
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1962 Chevy K10 factory 4x4 stepside longbed
http://67-72chevytrucks.com/vboard/s...d.php?t=494632
1967 Chevy 3/4 ton 4x4 long bed (Henrietta) traded
1968 Chevy 1/2 ton panel wagon, V8 and powerglide
http://67-72chevytrucks.com/vboard/s...d.php?t=483345
1978 Ford F250, beater stepside
2008 Jeep Wrangler 4 Door
2010 Chevy 4x4 plain jane work truck
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Old 04-04-2011, 12:00 AM   #3
LeftCoast32
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Re: 67 K20 Rockwell 221 shifting question

I can check my '66 for you tomorrow.
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Old 04-04-2011, 08:59 AM   #4
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Re: 67 K20 Rockwell 221 shifting question

Thanks LeftCoast. I've just about got it back on the road.
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1962 Chevy K10 factory 4x4 stepside longbed
http://67-72chevytrucks.com/vboard/s...d.php?t=494632
1967 Chevy 3/4 ton 4x4 long bed (Henrietta) traded
1968 Chevy 1/2 ton panel wagon, V8 and powerglide
http://67-72chevytrucks.com/vboard/s...d.php?t=483345
1978 Ford F250, beater stepside
2008 Jeep Wrangler 4 Door
2010 Chevy 4x4 plain jane work truck
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Old 04-04-2011, 09:06 PM   #5
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Re: 67 K20 Rockwell 221 shifting question

I checked mine and all my linkage is soild pins and no bushings. The hole looks worn out completely and you are probably not getting it all the way into 2WD. Go on the transfercase and push the arm on the drivers side all the way back. That should get you all the way into 2WD.
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Old 04-04-2011, 09:46 PM   #6
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Re: 67 K20 Rockwell 221 shifting question

I don't have that extender looking thing on mine.
Mine is a 67/68 Rockwell 221.
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Old 04-05-2011, 05:51 PM   #7
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Re: 67 K20 Rockwell 221 shifting question

Thanks ya'll. Not able to move the lever by hand. It moves easily from in the cab, just won't stay put in 2wd. I wonder if my problem is that extra piece in there? I can't seem to find a diagram on the 221 that would show what was supposed to be there.
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1962 Chevy K10 factory 4x4 stepside longbed
http://67-72chevytrucks.com/vboard/s...d.php?t=494632
1967 Chevy 3/4 ton 4x4 long bed (Henrietta) traded
1968 Chevy 1/2 ton panel wagon, V8 and powerglide
http://67-72chevytrucks.com/vboard/s...d.php?t=483345
1978 Ford F250, beater stepside
2008 Jeep Wrangler 4 Door
2010 Chevy 4x4 plain jane work truck
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Old 04-05-2011, 07:49 PM   #8
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Re: 67 K20 Rockwell 221 shifting question

Really hard to tell with the pictures.

But, I am thinking you are missing the shifter support bracket?
I don't know, but your set up looks custom.
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Old 04-06-2011, 08:11 AM   #9
'63GENIII
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Re: 67 K20 Rockwell 221 shifting question

Does anyone kow if the T221 uses detent balls to hold the shift shafts in place? If so, the springs that are used to keep pressure on the balls may have broken, allowing the shaft to pop out of position. I've never really looked at mine.
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Old 04-06-2011, 10:14 PM   #10
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Re: 67 K20 Rockwell 221 shifting question

I picked up a spare 221 from a buddy today, just for a spare, I know parts can be hard to find for these. It looks just like yours, vectorit. I'm going to play with mine a little to see if I can get it to work right, if not, try swapping the shifter mech. over to mine.Thanks all, I think I'm on the way.
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1962 Chevy K10 factory 4x4 stepside longbed
http://67-72chevytrucks.com/vboard/s...d.php?t=494632
1967 Chevy 3/4 ton 4x4 long bed (Henrietta) traded
1968 Chevy 1/2 ton panel wagon, V8 and powerglide
http://67-72chevytrucks.com/vboard/s...d.php?t=483345
1978 Ford F250, beater stepside
2008 Jeep Wrangler 4 Door
2010 Chevy 4x4 plain jane work truck
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Old 04-07-2011, 06:03 PM   #11
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Re: 67 K20 Rockwell 221 shifting question

After playing with the spare today, I see what's happening on mine. I can take a little prybar and get it into 2wd easily. And it stays in 2wd, bounced around the pasture a while to test it. Once I shift back to 4hi, it won't go into 2wd. Looks like I'll be swapping out the shifter mech.
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1962 Chevy K10 factory 4x4 stepside longbed
http://67-72chevytrucks.com/vboard/s...d.php?t=494632
1967 Chevy 3/4 ton 4x4 long bed (Henrietta) traded
1968 Chevy 1/2 ton panel wagon, V8 and powerglide
http://67-72chevytrucks.com/vboard/s...d.php?t=483345
1978 Ford F250, beater stepside
2008 Jeep Wrangler 4 Door
2010 Chevy 4x4 plain jane work truck
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