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#1 |
Registered User
Join Date: Jan 2006
Location: So. NV.
Posts: 153
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Swapping a 205 for a Rockwell
I just bought a divorced NP205 from an older Dodge and have plans to replace the leaky, noisy clapped out 221 in my '66 burb. Any tips you guys have on this? It's set up for the 1310 joints, and the one piece rear shaft should make it fairly simple. I'm keeping the sm420, I just need to figure out the mounts and shifter. My yokes and Us are pretty worn as well, so It needs a complete makeover. Ideas/expierences?
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‘66 Suburban 4x4 LQ4/4L80e Dana 60’s ‘67 Camaro RS/SS convertible 350/700r4 ‘74 K10 Stepside 402/TH350 |
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#2 |
Post Whore
![]() Join Date: Feb 2000
Location: Rose Hill, KS, USA
Posts: 12,684
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Re: Swapping a 205 for a Rockwell
If you can, post up some more pics of how the divorced Rockwell is suspended. How was the NP205 suspended? I don't have any experience with divorced transfer cases but since you are just putting one divorced t/c in place of the other divorced t/c that shouldn't be too difficult. The transfer cases are different lengths but the short shaft from the tranny to the t/c should be where you can address the length issue.
I'm in the process of swapping a married Rockwell for a married NP205. You'll note the Rockwell's rear output is very low, while the NP205's is high, that will cause you a little rear driveshaft length issue I would imagine. I don't know how the front output compares for the two divorced cases, but here are dimensions from my married units for you to at least compare. The NP205 is an early Chevy unit, not sure how different the Dodge one will be. I'm very interested in watching your conversion and learning more about the divorced units.
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1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14 Last edited by Yukon Jack; 04-16-2009 at 04:54 PM. |
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#3 |
Registered User
Join Date: Feb 2003
Location: The Rubber City
Posts: 5,498
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Re: Swapping a 205 for a Rockwell
i've seen people take divorced cases from dodges and take the whole crossmember that holds the case in those trucks. i think chevy framerails are wider, so you may have to lengthen it, but it will probably be the best, outside of just custom fabbing a crossmember out of tube.
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1969 GMC K2500 ![]() 1996 Honda Accord 2007 Kawasaki KLR 650 |
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#4 |
Registered User
Join Date: Sep 2008
Location: Swartz Creek Michigan
Posts: 19
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Re: Swapping a 205 for a Rockwell
Just did this very thing in my lwb stepside i will get some pics of the mounts i built and post up tomorrow. I didnt have the 221 case with my truck but it came with a 72 np205 and looks like it will work fine.
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If it Aint broke tear it apart anyway |
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#5 |
Well, Whoop-dee-do!
![]() Join Date: Mar 2003
Location: Easton, Mo. pop.- me & scarcely a few others
Posts: 2,302
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Re: Swapping a 205 for a Rockwell
Most of the divorced Dodge 205's I have seen had the "big" input & both output shafts all the same. Meaning, the same yoke will fit all 3 shafts. So, if you wanted to go 1350 joints all- around, you just need 3 rear output yokes from the rear outputs of 3/4 ton Chevy/ GMC 205s. Possibly even off the rear of a 203.
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'68 GMC shortbox 4x4 350/SM465/T221- bought it in '83 SOLD ![]() '72 K20 500 Cad/TH400/NP205 SOLD ![]() '92 Chevy 2500 6.5 mech TD 4L80E crusty daily driver '72 Monte Carlo... sweet low mile toy '11 Dodge Challenger IE 392 6spd... midlife car ![]() |
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#6 |
Registered User
Join Date: Jan 2006
Location: So. NV.
Posts: 153
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Re: Swapping a 205 for a Rockwell
Thanks for the replys. The new 205 should be here by next week. Hey fixie, did you keep the divorced setup?
__________________
‘66 Suburban 4x4 LQ4/4L80e Dana 60’s ‘67 Camaro RS/SS convertible 350/700r4 ‘74 K10 Stepside 402/TH350 |
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