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73-87 Chevy _ GMC Trucks => 4 Wheel Drives => Transfer Cases and Front Drivelines => Topic started by: Irish_Alley on February 20, 2010, 01:58:59 am

Title: 203 swap for a 205
Post by: Irish_Alley on February 20, 2010, 01:58:59 am

OK thinking about swapping out my 203 for the 205 the 203 has ubolt style flange at the case while the 205 has the circle and since i broke 2 and the bolts are giving me heck i want to swap them out my question is both are comming off a 465 will anything need to bee done to the 203's rear drive shaft to make it fit for the 205? the 205 is out of a blazer so using that shaft is out of the question. cant remember what the 205 had but mine (203)is a slip shaft and the 205 might be a slip yoke could that cause a problem? or would it just be easer to swap the whole tranys out

Title: Re: 203 swap for a 205
Post by: joesgarage71 on February 20, 2010, 09:54:49 pm

should have a flange bolted to the output of the 205 and theres a deal that bolts to the flange for your driveshaft. I think you can get them at ORD, or other 4x4 parts houses.

Title: Re: 203 swap for a 205
Post by: Irish_Alley on February 21, 2010, 12:25:27 am

this is what i found out in my journey today. the 10 spline flange is pre 77 and the 32-30 is post 77, so i have a pre 77 and every transfercase i had laying around and my buddy also was post 77 with the round flange you can take a 208 and swap the flange with a 205 and 203 as long as its the same spline count, but from what i understand the ubolt type flange that i have is also a pre 77 and once they swapped over to the post 77 style they did away with the u bolt type.

Title: Re: 203 swap for a 205
Post by: Irish_Alley on February 21, 2010, 12:34:19 am

also check this out
http://www.4wheeloffroad.com/howto/47538/photo_15.html
it looks like they have 10 spline square and 10 spline u bolt type what give am i missing something

Title: Re: 203 swap for a 205
Post by: Irish_Alley on February 21, 2010, 01:08:28 am

http://www.driveshaftsuperstore.com/Drive_shaft_custom_flanges.htm
think I'm getting closer

Title: Re: 203 swap for a 205
Post by: Irish_Alley on February 22, 2010, 04:38:49 am

well still no flange found but i think i found the next best thing
(http://www.customdriveshafts.biz/images/AdapterFlange_160x200.jpg)
http://www.customdriveshafts.biz/FlangedCV.html
now that I'm looking at it more i don't know if its what i need I'm sending them an email to see

Title: Re: 203 swap for a 205
Post by: fitz on February 22, 2010, 07:10:57 pm

Spicer still makes the flanges and yokes, I had to get new yokes when I swapped in a 205. Most driveshaft shops can get them for you.

Title: Re: 203 swap for a 205
Post by: joesgarage71 on March 03, 2010, 06:24:10 am

there ya go part numbers and everything.