3sp/t221 swap to sm465/np205 questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

67gmcstepside · 01-31-2010, 11:50 AM

I can get a great deal local to my home on a 72 blazer sm465/np205. I have in my 67 a 3sp/t221. Is this a direct swap as far as trans/transfer cross member/drive shafts?
Thanks as always,
Don

67gmcstepside · 01-31-2010, 12:27 PM

http://www.6066gmcguy.org/3-to-4-speed.htm

Just found this great thread!

**Yukon Jack** · 01-31-2010, 11:50 PM

This prior post of mine will help you somewhat - I previously swapped my three speed to the SM465 - that didn't require any major mods, but the swap later to the NP205 did require some mods.

**Captainfab** · 02-01-2010, 12:13 AM

Hey Don
I tried to reply to your PM but your inbox is full. I'll get you a shipping cost tomorrow. You can either clear your inbox or send me a PM with an email for you. Thanks

67gmcstepside · 02-01-2010, 09:02 AM

Thanks for this info Yukon Jack. I had no idea the cross member and driveshafts would be an issue.
Captain Fab, PM sent.

Thanks guys!!

**Yukon Jack** · 02-01-2010, 10:46 AM

The different location of the rear output shaft definitely makes things a bit more difficult.

67gmcstepside · 02-06-2010, 08:46 PM

Sorry if I am confused but if the 67 and 68's are almost the same and 68's could come with 465's and 205's would all the requires componets like cross members and drive shafts be readly available? The more I read the more it seems like I should change out the T221 since I am getting rid of the 3 spd anyway. If you aquire the right parts shouldn't it be just replacing these parts?

01-31-2010, 11:50 AM	#1
67gmcstepside Registered User Join Date: Jan 2010 Location: jackson Posts: 676	3sp/t221 swap to sm465/np205 questions I can get a great deal local to my home on a 72 blazer sm465/np205. I have in my 67 a 3sp/t221. Is this a direct swap as far as trans/transfer cross member/drive shafts? Thanks as always, Don

01-31-2010, 12:27 PM	#2
67gmcstepside Registered User Join Date: Jan 2010 Location: jackson Posts: 676	Re: 3sp/t221 swap to sm465/np205 questions http://www.6066gmcguy.org/3-to-4-speed.htm Just found this great thread!

01-31-2010, 11:50 PM	#3
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,686	Re: 3sp/t221 swap to sm465/np205 questions This prior post of mine will help you somewhat - I previously swapped my three speed to the SM465 - that didn't require any major mods, but the swap later to the NP205 did require some mods. __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14

02-01-2010, 12:13 AM	#4
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,252	Re: 3sp/t221 swap to sm465/np205 questions Hey Don I tried to reply to your PM but your inbox is full. I'll get you a shipping cost tomorrow. You can either clear your inbox or send me a PM with an email for you. Thanks __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

02-01-2010, 09:02 AM	#5
67gmcstepside Registered User Join Date: Jan 2010 Location: jackson Posts: 676	Re: 3sp/t221 swap to sm465/np205 questions Thanks for this info Yukon Jack. I had no idea the cross member and driveshafts would be an issue. Captain Fab, PM sent. Thanks guys!!

02-01-2010, 10:46 AM	#6
Yukon Jack Post Whore Join Date: Feb 2000 Location: Rose Hill, KS, USA Posts: 12,686	Re: 3sp/t221 swap to sm465/np205 questions The different location of the rear output shaft definitely makes things a bit more difficult. __________________ 1970 Blazer with a 400 sbc and 4" lift 1980 Pontiac Trans Am, 455 Oldsmobile 2012 Kawasaki Concours 14

02-06-2010, 08:46 PM	#7
67gmcstepside Registered User Join Date: Jan 2010 Location: jackson Posts: 676	Re: 3sp/t221 swap to sm465/np205 questions Sorry if I am confused but if the 67 and 68's are almost the same and 68's could come with 465's and 205's would all the requires componets like cross members and drive shafts be readly available? The more I read the more it seems like I should change out the T221 since I am getting rid of the 3 spd anyway. If you aquire the right parts shouldn't it be just replacing these parts? Last edited by 67gmcstepside; 02-06-2010 at 08:57 PM.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.