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Old 05-29-2017, 11:44 AM   #9
'63GENIII
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Join Date: Sep 2008
Location: San Carlos, Ca.
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Re: 1976 K20 - Factory front Posi?

Quote:
Originally Posted by Brad54 View Post
Don't walk away from it yet: If it's an auto, but it has locking hubs, it could be a posi. I don't know if manually locking hubs were an option of automatci-equipped trucks: I just know that every time I've run across an automatic 4x4 in the junkyard from that era--be it Chevy or Dodge-- they all have fixed hubs with no manual locks.



It's very possible someone might have added locking hubs to that truck, and then added a posi-unit, too. Ask for pics of the hubs, and when you get there pull the cover to see if it's a posi unit. (or just spin one tire and hold the other, with the hubs engaged. If they both spin, it's posi, if you can stop one, it's not)

-Brad
(on a side note, I enjoy every post you've made about your truck!)
Thanks for the kind words. I think I got a little frustrated with the guy's "I know what this stuff is worth" attitude. For the money that he wanted, Id be well on my way to a D60. I figured that he might have been a younger kid trying to sell the stuff.

Quote:
Originally Posted by special-K View Post
I don't know what years did what, but at some point an automatic with locking hubs became an option along side of the full-time option. These would have NP205s. It seems all '76s were full-time, but could be wrong. I know in '79 they could be had part-time auto for sure. Then on posi front, I don't know about in '76 but I know i the 69-72 era it was offered. I wonder if this guy is getting posi and full-time mixed up. The term "Loc" is used for shifting the NP203
Quote:
Originally Posted by B. W. View Post
DeadheadNM has a '72 K5 with a factory LSD listed on the spid (IIRC)
Hmmm. Interesting. Just never seen a factory LSD. Although I do like the idea of a traction aid in front, Im more inclined to look towards a selectable type like ARB or OX Locker.

The Posi was just was too tempting to pass up. Couldn't deal with the guy's attitude though.

Quote:
Originally Posted by nonstop View Post
Depending what he's asking - pick n pull has a half off sale this weekend, might be worth picking up a front end and swapping gears if they aren't the same ratio.
There's a thought! wonder if the have any Chevy 4x4s down there.
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'63 k15 long step
Vortec 7.4 - L29 Blackbear tune, Five 0 Motorsports injectors, Chris Straub Cam, NV4500, divorced 205
52" front and 63" rear spring swap
D44 / 14bff - disc axles
Milemarker 9K and 10.5K hydraulic winches

63" & B52 Spring Install http://67-72chevytrucks.com/vboard/s...ng+swap+thread


NV4500 Reverse Build Thread http://67-72chevytrucks.com/vboard/s...=reverse+build

L29 - 7.4 Vortec Build http://67-72chevytrucks.com/vboard/s...&highlight=L29
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