SWB driveshaft - The 1947 - Present Chevrolet & GMC Truck Message Board Network

VTKidder · 06-17-2003, 12:34 PM

Looking for a driveshaft from a '69 C-10 SWB that will mate the 3 on the column to the 12-bolt rear. The tranny end is a splined hole that slips on the splined end of the tranny, I don't know if you need the center carrier bearing on the crossmember or not for a SWB, but I need one that came from an original SWB 3-speed....u-joints need not be included. Just converting from 4 on the floor back to 3 on the column. I have all the linkage and everything else. Will need to be shipped to Vermont also. Thanks....

**CPNE** · 06-17-2003, 01:56 PM

VTKidder, you may not be aware of the following:

1. The 3 speed tranny makes a difference on length. The synchro'd 3 speed used 69-up with seven bolts on the shift fork cover is longer than the non synchro'd pre-69 tranny (4 bolt covers). If you have the synchro'd version, you can also use a driveshaft from a SWB TH350 truck as the overall length of the auto and 3 speed manuals are the same. I think the slip yolk is the same too.

2. it makes a difference its a small block or I6 (if small block is in forward "factory" position). The I6 uses a shorter driveshaft than it's v8 counterpart.

3. There is no carrier bearing on these, it is a one piece unlike the 4 speed version you already have.

VTKidder · 06-17-2003, 02:16 PM

Know what Jeff? You're really starting to

me off with this extreme knowledge!!!

I didn't know all of these details mattered...okay, what we have.

Factory 350 in it's standard spot, gotta be the synchro-d 3-speed that came in the truck in '69. The only real crappy pic I have of the tranny shows the cover being rectangular shaped job, with maybe one angled side on the lower front of the cover?? Is this right? I'd assume a 4 bolt cover would be square, or maybe a bit rectangular.

I have some literature here which says...

"The 3-speed fully synchronized transmssion is standard on all Series 10-20 Forward Control except with 307 or 350 engines and most Series 10-20 models. All forward speeds are synchronized for much better vehicle flexibility and convenience. The gearshift is located on the steering column. A special heavy duty transmission is included when either a 350 V8 or 396 V8 are ordered, and PE20 models with 307 or 350 V8 engines. This unit is also standard on all 4-wheel drive (KA 10-20 models) engine applications."

I've got to take a better look at the tranny I have, but at this point, complete confusion has set in. Thanks a lot Jeff...

**CPNE** · 06-17-2003, 02:22 PM

Looks like any 3 speed or th350 1/2 ton swb truck 69-72 would be a suitable donor. Best to measure overall length to be sure.:p

Longhorn Man · 06-17-2003, 05:43 PM

Would that be a short shaft TH350, or a long shaft Th350 there CPNE?
If it is a short shaft, then you'd need a 4 foot 10 inch long driveshaft, measured from center of U-joint hole, to center.

ratrod67 · 06-17-2003, 06:04 PM

I have a driveshaft from a 69 SWB with a 307 and 3 speed. The yoke is removed though.

VTKidder · 06-19-2003, 08:25 AM

Does the yoke unbolt from the end of the driveshaft, or is it welded on originally?

ratrod67 · 06-19-2003, 10:37 AM

The yoke was held on by 2 caps from the front u joint.

VTKidder · 06-19-2003, 10:50 AM

Alright...thoroughly confused at this point....

Are you talking about the front slip yoke?

ratrod67 · 06-19-2003, 11:02 AM

The yoke that slips into the transmission is held on by 2 of the front u joint caps. The driveshaft is 2 pieces. The 2 shafts are held together by a u joint. I placed an old yoke where the original one from my truck would have went. The carrier bearing is still attached but needs I would replace it.

ratrod67 · 06-19-2003, 11:03 AM

Sorry about the crappy pics. I need a good digital camera.

**CPNE** · 06-19-2003, 11:19 AM

Ok, now I'm confused. I've never seen or heard of a 115 inch wheel base truck that utilized a 2 piece driveshaft EXCEPT for factory 4 speeds. I've had 3 (a 67, 68, and 71) and all have used one-piece driveshafts. What is the overall lenght of that driveshaft (slip yolk u-joint to rear diff u-joint). Just curious.

ratrod67 · 06-19-2003, 11:25 AM

From front center to rear center u joint holes it's 4 ft. 11 inches.(59 inches) This truck was completely stock when I got it. It had stock hoses, belts and only 71,000 miles.

**CPNE** · 06-19-2003, 11:38 AM

Sounds about right. Learn sumthin new every day. Sorry to intrude on thread

ratrod67 · 06-19-2003, 11:43 AM

It's all about learning. I learn something new just about everytime I come to this site. I still have a LONG ways to go.

VTKidder · 06-19-2003, 12:56 PM

I'm going to have to take some measurements to be sure here. Appears that it would work either way. If I could get away without the center bearing and an extra u-joint in the picture, I'd be happy; less moving parts = less stuff to break. Thanks guys...

*racedvl* · 06-19-2003, 04:21 PM

This is why I always have mine built.

**PICKMUP** · 06-20-2003, 03:19 AM

I never know about GM...I have a 69 & 72 SWB 350/350...both came with the two piece and I have had a couple more. Never had one with a OEM one piece, but that is what I always put in them if I am building them from scratch. One of those driveshafts is still in the chassis and I would sell it for $75 with the yoke & center bearing.

I don't know if pic shows or not.

VTKidder · 06-20-2003, 07:06 AM

Let me to check the specs on exactly what I've got for a contraption here, and I'll get back to you. Thanks everyone.

06-17-2003, 12:34 PM	#1
VTKidder Registered User Join Date: May 2003 Location: Vermont Posts: 996	SWB driveshaft Looking for a driveshaft from a '69 C-10 SWB that will mate the 3 on the column to the 12-bolt rear. The tranny end is a splined hole that slips on the splined end of the tranny, I don't know if you need the center carrier bearing on the crossmember or not for a SWB, but I need one that came from an original SWB 3-speed....u-joints need not be included. Just converting from 4 on the floor back to 3 on the column. I have all the linkage and everything else. Will need to be shipped to Vermont also. Thanks....

06-17-2003, 01:56 PM	#2
CPNE Resident Curmudgeon Join Date: Dec 1999 Location: NH Posts: 6,664	VTKidder, you may not be aware of the following: 1. The 3 speed tranny makes a difference on length. The synchro'd 3 speed used 69-up with seven bolts on the shift fork cover is longer than the non synchro'd pre-69 tranny (4 bolt covers). If you have the synchro'd version, you can also use a driveshaft from a SWB TH350 truck as the overall length of the auto and 3 speed manuals are the same. I think the slip yolk is the same too. 2. it makes a difference its a small block or I6 (if small block is in forward "factory" position). The I6 uses a shorter driveshaft than it's v8 counterpart. 3. There is no carrier bearing on these, it is a one piece unlike the 4 speed version you already have. __________________ Currently on or near the homestead: 67 Chevy SWB 2WD stepside 350/3 on tree (Pat's) 67 GMC SWB 2WD Fleet 402/auto (Brian's under construction) 67 Chevy 3/4 ton 2WD 402/auto (Business Hauler) 67 Chevy 1 ton dually 2WD 396/4 speed (Former business hauler, Needs TLC) 68 Chevy 1/2 ton Suburban 2WD 250 six/3 on tree (Brian's Needs TLC) 70 Chevy 3/4 ton 4WD 350/4 speed (Pat's - Disguised as a 68 GMC) 71 Chevy SWB stepside (Crushed by tree - parts donor) 72 Chevy 3/4 ton 4WD (Parts donor) 72 Chevy 3/4 ton 4WD Suburban (Parts Donor) 72 GMC 3/4 ton 4WD 292 six/4 speed (Mine - Disguised as a 67 GMC) 81 GMC 4WD Dually Dump Body 350/4 speed (Business Hauler) 82 Camaro Z/28 355/Super T-10 (Pat's toy) 93 Caprice 9C1 (Brian's Cop Car) 02 Toyota Camry (Reliable but a souless steel and plastic hulk) 2011 2SS RS Camaro M6 Factory Hurst Shifter Maybe I need to sell some of this crap Yet another Bozo with a sawz-all

06-17-2003, 02:22 PM	#4
CPNE Resident Curmudgeon Join Date: Dec 1999 Location: NH Posts: 6,664	Looks like any 3 speed or th350 1/2 ton swb truck 69-72 would be a suitable donor. Best to measure overall length to be sure.:p __________________ Currently on or near the homestead: 67 Chevy SWB 2WD stepside 350/3 on tree (Pat's) 67 GMC SWB 2WD Fleet 402/auto (Brian's under construction) 67 Chevy 3/4 ton 2WD 402/auto (Business Hauler) 67 Chevy 1 ton dually 2WD 396/4 speed (Former business hauler, Needs TLC) 68 Chevy 1/2 ton Suburban 2WD 250 six/3 on tree (Brian's Needs TLC) 70 Chevy 3/4 ton 4WD 350/4 speed (Pat's - Disguised as a 68 GMC) 71 Chevy SWB stepside (Crushed by tree - parts donor) 72 Chevy 3/4 ton 4WD (Parts donor) 72 Chevy 3/4 ton 4WD Suburban (Parts Donor) 72 GMC 3/4 ton 4WD 292 six/4 speed (Mine - Disguised as a 67 GMC) 81 GMC 4WD Dually Dump Body 350/4 speed (Business Hauler) 82 Camaro Z/28 355/Super T-10 (Pat's toy) 93 Caprice 9C1 (Brian's Cop Car) 02 Toyota Camry (Reliable but a souless steel and plastic hulk) 2011 2SS RS Camaro M6 Factory Hurst Shifter Maybe I need to sell some of this crap Yet another Bozo with a sawz-all

06-19-2003, 10:50 AM	#9
VTKidder Registered User Join Date: May 2003 Location: Vermont Posts: 996	??? Alright...thoroughly confused at this point.... Are you talking about the front slip yoke? Attached Images

06-19-2003, 11:19 AM	#12
CPNE Resident Curmudgeon Join Date: Dec 1999 Location: NH Posts: 6,664	Ok, now I'm confused. I've never seen or heard of a 115 inch wheel base truck that utilized a 2 piece driveshaft EXCEPT for factory 4 speeds. I've had 3 (a 67, 68, and 71) and all have used one-piece driveshafts. What is the overall lenght of that driveshaft (slip yolk u-joint to rear diff u-joint). Just curious. __________________ Currently on or near the homestead: 67 Chevy SWB 2WD stepside 350/3 on tree (Pat's) 67 GMC SWB 2WD Fleet 402/auto (Brian's under construction) 67 Chevy 3/4 ton 2WD 402/auto (Business Hauler) 67 Chevy 1 ton dually 2WD 396/4 speed (Former business hauler, Needs TLC) 68 Chevy 1/2 ton Suburban 2WD 250 six/3 on tree (Brian's Needs TLC) 70 Chevy 3/4 ton 4WD 350/4 speed (Pat's - Disguised as a 68 GMC) 71 Chevy SWB stepside (Crushed by tree - parts donor) 72 Chevy 3/4 ton 4WD (Parts donor) 72 Chevy 3/4 ton 4WD Suburban (Parts Donor) 72 GMC 3/4 ton 4WD 292 six/4 speed (Mine - Disguised as a 67 GMC) 81 GMC 4WD Dually Dump Body 350/4 speed (Business Hauler) 82 Camaro Z/28 355/Super T-10 (Pat's toy) 93 Caprice 9C1 (Brian's Cop Car) 02 Toyota Camry (Reliable but a souless steel and plastic hulk) 2011 2SS RS Camaro M6 Factory Hurst Shifter Maybe I need to sell some of this crap Yet another Bozo with a sawz-all

06-17-2003, 02:16 PM	#3
VTKidder Registered User Join Date: May 2003 Location: Vermont Posts: 996	Know what Jeff? You're really starting to me off with this extreme knowledge!!! I didn't know all of these details mattered...okay, what we have. Factory 350 in it's standard spot, gotta be the synchro-d 3-speed that came in the truck in '69. The only real crappy pic I have of the tranny shows the cover being rectangular shaped job, with maybe one angled side on the lower front of the cover?? Is this right? I'd assume a 4 bolt cover would be square, or maybe a bit rectangular. I have some literature here which says... "The 3-speed fully synchronized transmssion is standard on all Series 10-20 Forward Control except with 307 or 350 engines and most Series 10-20 models. All forward speeds are synchronized for much better vehicle flexibility and convenience. The gearshift is located on the steering column. A special heavy duty transmission is included when either a 350 V8 or 396 V8 are ordered, and PE20 models with 307 or 350 V8 engines. This unit is also standard on all 4-wheel drive (KA 10-20 models) engine applications." I've got to take a better look at the tranny I have, but at this point, complete confusion has set in. Thanks a lot Jeff...

06-17-2003, 05:43 PM	#5
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Would that be a short shaft TH350, or a long shaft Th350 there CPNE? If it is a short shaft, then you'd need a 4 foot 10 inch long driveshaft, measured from center of U-joint hole, to center.

06-17-2003, 06:04 PM	#6
ratrod67 Registered User Join Date: Sep 2002 Location: DFW Texas Posts: 2,270	I have a driveshaft from a 69 SWB with a 307 and 3 speed. The yoke is removed though.

06-19-2003, 08:25 AM	#7
VTKidder Registered User Join Date: May 2003 Location: Vermont Posts: 996	Does the yoke unbolt from the end of the driveshaft, or is it welded on originally?

06-19-2003, 10:37 AM	#8
ratrod67 Registered User Join Date: Sep 2002 Location: DFW Texas Posts: 2,270	The yoke was held on by 2 caps from the front u joint.

06-19-2003, 11:02 AM	#10
ratrod67 Registered User Join Date: Sep 2002 Location: DFW Texas Posts: 2,270	The yoke that slips into the transmission is held on by 2 of the front u joint caps. The driveshaft is 2 pieces. The 2 shafts are held together by a u joint. I placed an old yoke where the original one from my truck would have went. The carrier bearing is still attached but needs I would replace it.

06-19-2003, 11:03 AM	#11
ratrod67 Registered User Join Date: Sep 2002 Location: DFW Texas Posts: 2,270	Sorry about the crappy pics. I need a good digital camera.

06-19-2003, 11:25 AM	#13
ratrod67 Registered User Join Date: Sep 2002 Location: DFW Texas Posts: 2,270	From front center to rear center u joint holes it's 4 ft. 11 inches.(59 inches) This truck was completely stock when I got it. It had stock hoses, belts and only 71,000 miles.

06-19-2003, 11:38 AM	#14
CPNE Resident Curmudgeon Join Date: Dec 1999 Location: NH Posts: 6,664	Sounds about right. Learn sumthin new every day. Sorry to intrude on thread __________________ Currently on or near the homestead: 67 Chevy SWB 2WD stepside 350/3 on tree (Pat's) 67 GMC SWB 2WD Fleet 402/auto (Brian's under construction) 67 Chevy 3/4 ton 2WD 402/auto (Business Hauler) 67 Chevy 1 ton dually 2WD 396/4 speed (Former business hauler, Needs TLC) 68 Chevy 1/2 ton Suburban 2WD 250 six/3 on tree (Brian's Needs TLC) 70 Chevy 3/4 ton 4WD 350/4 speed (Pat's - Disguised as a 68 GMC) 71 Chevy SWB stepside (Crushed by tree - parts donor) 72 Chevy 3/4 ton 4WD (Parts donor) 72 Chevy 3/4 ton 4WD Suburban (Parts Donor) 72 GMC 3/4 ton 4WD 292 six/4 speed (Mine - Disguised as a 67 GMC) 81 GMC 4WD Dually Dump Body 350/4 speed (Business Hauler) 82 Camaro Z/28 355/Super T-10 (Pat's toy) 93 Caprice 9C1 (Brian's Cop Car) 02 Toyota Camry (Reliable but a souless steel and plastic hulk) 2011 2SS RS Camaro M6 Factory Hurst Shifter Maybe I need to sell some of this crap Yet another Bozo with a sawz-all

06-19-2003, 11:43 AM	#15
ratrod67 Registered User Join Date: Sep 2002 Location: DFW Texas Posts: 2,270	It's all about learning. I learn something new just about everytime I come to this site. I still have a LONG ways to go.



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06-19-2003, 12:56 PM	#16
VTKidder Registered User Join Date: May 2003 Location: Vermont Posts: 996	I'm going to have to take some measurements to be sure here. Appears that it would work either way. If I could get away without the center bearing and an extra u-joint in the picture, I'd be happy; less moving parts = less stuff to break. Thanks guys...

06-19-2003, 04:21 PM	#17
racedvl Account Suspended Join Date: Jan 2000 Location: Woodstock, IL Posts: 7,020	This is why I always have mine built.

06-20-2003, 03:19 AM	#18
PICKMUP "Trucks with Class" Join Date: Jul 2000 Location: OLYMPIA, WA, USA Posts: 8,169	Two piece also I never know about GM...I have a 69 & 72 SWB 350/350...both came with the two piece and I have had a couple more. Never had one with a OEM one piece, but that is what I always put in them if I am building them from scratch. One of those driveshafts is still in the chassis and I would sell it for $75 with the yoke & center bearing. I don't know if pic shows or not. Attached Images __________________ Email: frankeham@comcast.net Phone: 360-956-7170

06-20-2003, 07:06 AM	#19
VTKidder Registered User Join Date: May 2003 Location: Vermont Posts: 996	Let me to check the specs on exactly what I've got for a contraption here, and I'll get back to you. Thanks everyone.

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