manual to auto swap - The 1947 - Present Chevrolet & GMC Truck Message Board Network

cheyenne10 · 12-04-2002, 01:23 AM

I need a complete set of auto trans linkage and tranny inspection cover for T350/NP205 swap.

We are removing SM465/NP205 setup and need all parts before getting started. Refresh my memory on the need to move cross-member and modify drive lines.

Also does clutch pedal just remove or is auto brake assemby need to R/R manual assembly?

How is backup light hookup different? All tips appriciated.

Mike C · 12-04-2002, 10:38 AM

The auto crossmember is different than the manual one. The manual uses bellhousing mounts and a "hanger" for the t-case while the auto uses an crossmember that runs side to side. If memory serves, the auto t-case has different splines than the manual so you should get the whole enchilada or plan to spend big bucks on an adapter from Advance Adapters. Not sure on linkage.

hjalbert · 12-04-2002, 11:31 PM

dont know about yours, but everything on mine is a bolt up. so far, the only thing i am having to deal with is the stud that comes off the frame that the linkage hooks too, allthough i am not sure about that, my crossmember woks though, as do the drive shafts

cheyenne10 · 12-07-2002, 11:52 AM

Does anyone have a complete list of parts needed for the swap?

Is there a difference in tranny humps?

I have never attempted this process before and still need the encouragement or discouragement to go for it. One of the biggest worries I have is how to get the unit down to the ground and out from under truck and then to get next one up into place.

ozarkhippie · 12-07-2002, 12:10 PM

Bob I have never done the swap myself but as far as i know every thing is supposed the change over easily, as far as the clutch ped. you just have to remove it. But I do know for lifting the trans and transfer up you can remove the hump and run a pipe from door to door and use a comealong to help get them into position. But you may not like this way,especialy if your doors or paint is realy good ( I never have been that fortunite)

**breeh** · 12-07-2002, 12:52 PM

When you come up to get that 250 6 cylinder I may be able to hook you up with some of what you need. I have the shifter linkage, the inspection cover and a 4x4 TH350 core if you want it. Also, when I swapped from 4 speed to auto the t-case crossmember was the same for both.

cheyenne10 · 12-08-2002, 01:39 AM

I am still trying to plan that trip up to get the motor. I hope it isn't a storage problem for you. The trans linkage sounds like what I need so filling some of my other needs on trip would be good.
I am PMing you also.

72C10chevy4x4 · 12-10-2002, 09:33 AM

tranny humps for the 4 wheel drive models are the same from what I've read, so no changes necessary. I"m doing the swap currently, but moving to a 700R4 from the SM465. I keep reading about different crossmembers; think that maybe that only applies for 2 wheel drive versions but haven't been able to confirm yet. Try wheeling and dealing with a local (small fry) junk yard-you may get lucky and pick the parts up really cheap.

12-04-2002, 01:23 AM	#1
cheyenne10 Senior Member Join Date: Apr 2000 Location: Oregon Posts: 2,511	manual to auto swap I need a complete set of auto trans linkage and tranny inspection cover for T350/NP205 swap. We are removing SM465/NP205 setup and need all parts before getting started. Refresh my memory on the need to move cross-member and modify drive lines. Also does clutch pedal just remove or is auto brake assemby need to R/R manual assembly? How is backup light hookup different? All tips appriciated. __________________ Bob

12-04-2002, 10:38 AM	#2
Mike C Registered User Join Date: Dec 1999 Location: Austin, TX, USA Posts: 7,713	The auto crossmember is different than the manual one. The manual uses bellhousing mounts and a "hanger" for the t-case while the auto uses an crossmember that runs side to side. If memory serves, the auto t-case has different splines than the manual so you should get the whole enchilada or plan to spend big bucks on an adapter from Advance Adapters. Not sure on linkage. __________________ 44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax

12-04-2002, 11:31 PM	#3
hjalbert cracker Join Date: Sep 2001 Location: Wilmington, NC Posts: 1,021	dont know about yours, but everything on mine is a bolt up. so far, the only thing i am having to deal with is the stud that comes off the frame that the linkage hooks too, allthough i am not sure about that, my crossmember woks though, as do the drive shafts __________________ FOUNDING MEMBER OF THE DRUM BRAKE CLUB Harry John Albert III located in Phoenix, AZ 1972 GMC JIMMY, 1969 lwb Chevy Frame, 1999 bmw k1200 ltc 1992 Kawasaki concours 1991 bmw k75 1973 cortez motorhome

12-07-2002, 11:52 AM	#4
cheyenne10 Senior Member Join Date: Apr 2000 Location: Oregon Posts: 2,511	trans hump Does anyone have a complete list of parts needed for the swap? Is there a difference in tranny humps? I have never attempted this process before and still need the encouragement or discouragement to go for it. One of the biggest worries I have is how to get the unit down to the ground and out from under truck and then to get next one up into place. __________________ Bob

12-07-2002, 12:52 PM	#6
breeh Recovering 67-72 Addict Join Date: Oct 2000 Location: North Bend, WA Posts: 1,788	When you come up to get that 250 6 cylinder I may be able to hook you up with some of what you need. I have the shifter linkage, the inspection cover and a 4x4 TH350 core if you want it. Also, when I swapped from 4 speed to auto the t-case crossmember was the same for both. __________________ 68 Short Fleet 4x4; 427; BTO Level 3 700R4; NP205; Dana 60 front and rear; 4" lift with 35's; Disc brakes; AGR variable ratio steering; factory bucket seats; factory tach and tilt. "Friends call me cruzer cuz I like fast cars and fast women" Last edited by breeh; 12-07-2002 at 12:57 PM.

12-07-2002, 12:10 PM	#5
ozarkhippie Registered User Join Date: Nov 2002 Location: Eureka Springs AR Posts: 494	Bob I have never done the swap myself but as far as i know every thing is supposed the change over easily, as far as the clutch ped. you just have to remove it. But I do know for lifting the trans and transfer up you can remove the hump and run a pipe from door to door and use a comealong to help get them into position. But you may not like this way,especialy if your doors or paint is realy good ( I never have been that fortunite)

12-08-2002, 01:39 AM	#7
cheyenne10 Senior Member Join Date: Apr 2000 Location: Oregon Posts: 2,511	breeh I am still trying to plan that trip up to get the motor. I hope it isn't a storage problem for you. The trans linkage sounds like what I need so filling some of my other needs on trip would be good. I am PMing you also. __________________ Bob

12-10-2002, 09:33 AM	#8
72C10chevy4x4 UK Wildcat Fan! Join Date: Oct 2002 Location: Dover, DE Posts: 515	tranny humps for the 4 wheel drive models are the same from what I've read, so no changes necessary. I"m doing the swap currently, but moving to a 700R4 from the SM465. I keep reading about different crossmembers; think that maybe that only applies for 2 wheel drive versions but haven't been able to confirm yet. Try wheeling and dealing with a local (small fry) junk yard-you may get lucky and pick the parts up really cheap.



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