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#1 |
Senior Member
![]() Join Date: Jan 2002
Location: Williston, ND
Posts: 2,999
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4wd question
Can you take a 205 from a 4-speed and, with the correct adapter, put the 205 behind a TH350? I say no, but my brother says yes, so I was curious.
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68 Chevy CST/10, 50th Anniversary, 327/th400, 373 posi, buckets 68 GMC Shortbox Stepside, 402/th400, Tilt, Tach, Bucket Seats, 3.08 Positraction 69 Chevy Camaro SS, 383, 4 speed, positraction 70 Chevy El Camino SS396, Triple Black, 454/th400, Tach 70 Chevy Shortbox Stepside 4x4, 350/th350, Tilt, Tach, Cab Lights, Bumper Guards, Tow Hooks 70 Chevy 3/4 Longbox, 350/auto, 70k, SURVIVOR 71 Chevy Blazer, CST, 350/auto 71 GMC Sierra K2500, 454, 4 speed, 4.10 posi, 37s 71 Custom/30, Open Road, 350/th400, tilt 72 Chevy Shortbox Fleetside, 496 Stroker/th400, Tilt, Tach, Bucket Seats, 3.42 Posi 72 GMC Sierra Grande 2500. 427/th400, tilt, a/c, tool and stowage, buckets/console, 3.54 posi |
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#2 |
Registered User
Join Date: Mar 2006
Location: USA
Posts: 21,020
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Re: 4wd question
Yes,I belive you can.It will require work though.
Last edited by 1969k10stepside; 02-11-2007 at 11:39 AM. |
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#3 |
Registered User
Join Date: Mar 2006
Location: USA
Posts: 21,020
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Re: 4wd question
Ok,this will help you:
Anyway, just FYI, there are 4 different input designs for the 205 in GM trucks that I know of. Your best bet is to get a 205 that was originally behind whatever transmission you're planning on running. Here's the input/trans combos that I know of; 205 Input Trans 10 spline male SM465 4 speed 27 spline male TH350 Auto 32 spline female, (short) TH400 32 spline female, (long) Later model 4 speed? (Not sure if these are still the SM465 and the "long" female input may have also been behind some TH400 transmissions? Not to familiar with the "long" input. Here's some more; the 10 spline and 27 spline male input 205's use a smaller input bearing than the 32 spline female input. So, for example, if you were going to run a 4 speed, (10 spline), or a TH350 trans, (27 spline), the 32 spline input 205 cannot be used. You can't change the input to the smaller bearing inputs because the hole in the case for the bearing is to big. Now on the other hand, if you were to go the other way around, you can always have the smaller bearing hole machined out to fit the larger input bearing. |
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#4 |
Registered User
Join Date: Dec 2004
Location: NW, WA.
Posts: 1,421
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Re: 4wd question
the 4 different input gears for the NP 205 transfer case.
Right to left: short 32 spl long 32 spl 10 spl 27 spl You bro is right, just swap the 10 spline unit for the 27 spline and Git 'er done! You will need a K-case th350 with the rear adaptor on the tail. Last edited by Americanrider; 02-11-2007 at 03:44 PM. |
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#5 |
Firefighter
Join Date: Feb 2001
Location: Yellville, Ar, USA
Posts: 1,943
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Re: 4wd question
Yes it can be done, with the right adapter.
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'72 Chevy SWB 350 Auto '67 GMC LWB 350 4 speed '70 Chevy 4x4 Stepside 350 Auto Yellville, Ar. USA ![]() ![]() |
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