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Old 10-04-2017, 08:06 AM   #1
collin70k/20
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14 bolt dually rear

Hey guys I want to get rid of my Easton ho52 underneath my 1970 k20. Easton is starting to go down hill slowly. I bought a 14 bolt but it came out of a dually truck. I measured and obviously going to cut the perches but I'm thinking everything else should work. Just curious to see if I screwed up or if the dually rear will work. Thanks in advanced Collin
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Old 10-04-2017, 09:32 AM   #2
mongocanfly
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Re: 14 bolt dually rear

a 14 bolt drw actually comes from a cab and chassis truck..
a dana 70 drw comes from a dually (pickup)
there are differences in width between the two
if I remember right I think the 14 bolt wms to wms width is going to be different than your ho52
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Old 10-04-2017, 09:41 AM   #3
mongocanfly
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Re: 14 bolt dually rear

roll down through this down to where it talks about 14 bolt differences...
srw..67.5 wms
c&c..63.5 wms
drw...72 wms
http://www.pirate4x4.com/tech/billavista/14b_bible/
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Old 10-04-2017, 12:41 PM   #4
jeffahart
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Re: 14 bolt dually rear

The easy button for your truck is the 1ton SRW corp14. I will bolt right into your 3/4 ton, you only need to change the shock mount tabs. Basically no fab, you could drive to welder with no shocks and have tabs welded in if you don't weld. And have some zero rate leaf blocks on hand. I forget exactly but I think I ended up 1/2" one way or the other with the drive shaft length. Very close, near non issue. Read the link that Mongo posted from pirate, it is an excellent read. You will then know which year you want, base on neck down, brake drums with no axle pull and that sort of thing. Good luck with the DRW!
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Old 10-04-2017, 05:13 PM   #5
obijuan
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Re: 14 bolt dually rear

Just put single wheel hubs and swap to disc brakes and you have a nice axle to put in it.
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Old 10-04-2017, 08:44 PM   #6
franken
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Re: 14 bolt dually rear

If I remember right, the perch center to center and maybe the WMS are different on 4x4 and 2wd.
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Old 10-04-2017, 09:15 PM   #7
jeffahart
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Re: 14 bolt dually rear

Quote:
Originally Posted by franken View Post
If I remember right, the perch center to center and maybe the WMS are different on 4x4 and 2wd.
That could well be. There may need to be a qualifier of the donor 14 being a 4wd. Mine came off a CUCV, so there you go. But betting GM is cheap and keeps the same setup for the modern one tons is a fair bet. Anyhow he can change the perches easy enough, plus he can get the added benefit of building in the pinion angle. Looks like collin the OP can weld. Depending on how much he paid for the rearend, he might just chase down an axle with correct gears, locker and a quick bolt in. Looks like he's going to be going after hubs anyway. Either way, all good.
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Old 10-04-2017, 10:12 PM   #8
obijuan
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Re: 14 bolt dually rear

For 73-87:

1 ton spring perches are the same cab and chassis or not.
1/2 and 3/4 ton share the same perch width.

2wd and 4wd shock mounts are different.
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Old 10-12-2017, 08:40 AM   #9
collin70k/20
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Re: 14 bolt dually rear

Thanks everyone
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