Yes another driveshaft question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

HavinSomeFun · 03-17-2008, 05:14 AM

I searched and came back more confused than when I started.

I am pulling the 6cyl/3spd from my 67. I will be installing a 350/350 setup. I am going to use the V8 towers and bolt them in the forward position. Will the drive shaft work or will I need to look for another one?

Thanks in advance.

old Chevy guy · 03-17-2008, 05:40 AM

I think if you mount the moter in the forward position the drive shaft will be to short. Try measuring the lenght from the front of both bells to the end of the tail shaft .If there the same ,drive shaft to short. auto longer by the diffrence in moter mount position drive shaft good.

68gmsee · 03-17-2008, 06:04 AM

It all depends on the transmission tail end. Did the same on my 69 Chevy and the drive shaft was actually slightly short. The yoke engaged the output shaft by about 2 inches. If I moved the engine to the rear mounting holes, the shaft was too long and I would have had to have it shortened. I drove it like that for 15 years with no problems though.

Now that I'm going to replace the engine I've decided to move the mounts back about and inch so the drive shaft yoke will engage the transmission output shaft better.

HavinSomeFun · 03-17-2008, 06:20 AM

it is the short shaft 350 trans from a 72 C10. I should have mentioned that before.

68gmsee · 03-17-2008, 07:26 AM

You didn't mention whether it's a short wheel base or long wheel base but if it's the short wheel base like mine, then the drive shaft may not be long enough mounted in the front position. I have the the long shaft 350 on mine.

As I mentioned, mine engages the shaft by about 2 inches or maybe 2 1/2. That's why I'm moving it back about an inch.

I'm not sure if yours would work in the rear position. You'll probably will just have measure real carefully and/or place the engine in position to see how it fits.

HavinSomeFun · 03-17-2008, 06:26 PM

it is a short bed. I have a feeling it will be a little short, I better start looking.

68gmsee · 03-17-2008, 06:40 PM

If it will help, I can measure the drive shaft on mine. Also, I have the engine and trans out so I can take a pic of trans but won't be able to post until this evening. Truck's out in the country.

HavinSomeFun · 03-17-2008, 06:44 PM

My Eng/Trans isnt installed yet. I have everything I need for the swap and the only thing I am not certain about is the drive shaft. I have been told if the tailshaft is the short one, it should work. We'll see next weekend.

68gmsee · 03-17-2008, 06:53 PM

10/4. I did my swap so long ago, I don't even remember if I swapped the drive shaft. I had a donor truck at the time.

03-17-2008, 05:14 AM	#1
HavinSomeFun Still Just Havin Some Fun! Join Date: Jun 2007 Location: Piedmont, Oklahoma Posts: 1,145	Yes another driveshaft question I searched and came back more confused than when I started. I am pulling the 6cyl/3spd from my 67. I will be installing a 350/350 setup. I am going to use the V8 towers and bolt them in the forward position. Will the drive shaft work or will I need to look for another one? Thanks in advance. __________________ a green one with some stuff done to it....

03-17-2008, 05:40 AM	#2
old Chevy guy Registered User Join Date: Apr 2007 Location: Foster Rhode Island Posts: 1,176	Re: Yes another driveshaft question I think if you mount the moter in the forward position the drive shaft will be to short. Try measuring the lenght from the front of both bells to the end of the tail shaft .If there the same ,drive shaft to short. auto longer by the diffrence in moter mount position drive shaft good.

03-17-2008, 06:04 AM	#3
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: Yes another driveshaft question It all depends on the transmission tail end. Did the same on my 69 Chevy and the drive shaft was actually slightly short. The yoke engaged the output shaft by about 2 inches. If I moved the engine to the rear mounting holes, the shaft was too long and I would have had to have it shortened. I drove it like that for 15 years with no problems though. Now that I'm going to replace the engine I've decided to move the mounts back about and inch so the drive shaft yoke will engage the transmission output shaft better. Last edited by 68gmsee; 03-17-2008 at 06:05 AM.

03-17-2008, 06:20 AM	#4
HavinSomeFun Still Just Havin Some Fun! Join Date: Jun 2007 Location: Piedmont, Oklahoma Posts: 1,145	Re: Yes another driveshaft question it is the short shaft 350 trans from a 72 C10. I should have mentioned that before. __________________ a green one with some stuff done to it....

03-17-2008, 07:26 AM	#5
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: Yes another driveshaft question You didn't mention whether it's a short wheel base or long wheel base but if it's the short wheel base like mine, then the drive shaft may not be long enough mounted in the front position. I have the the long shaft 350 on mine. As I mentioned, mine engages the shaft by about 2 inches or maybe 2 1/2. That's why I'm moving it back about an inch. I'm not sure if yours would work in the rear position. You'll probably will just have measure real carefully and/or place the engine in position to see how it fits.

03-17-2008, 06:26 PM	#6
HavinSomeFun Still Just Havin Some Fun! Join Date: Jun 2007 Location: Piedmont, Oklahoma Posts: 1,145	Re: Yes another driveshaft question it is a short bed. I have a feeling it will be a little short, I better start looking. __________________ a green one with some stuff done to it....

03-17-2008, 06:40 PM	#7
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: Yes another driveshaft question If it will help, I can measure the drive shaft on mine. Also, I have the engine and trans out so I can take a pic of trans but won't be able to post until this evening. Truck's out in the country.

03-17-2008, 06:44 PM	#8
HavinSomeFun Still Just Havin Some Fun! Join Date: Jun 2007 Location: Piedmont, Oklahoma Posts: 1,145	Re: Yes another driveshaft question My Eng/Trans isnt installed yet. I have everything I need for the swap and the only thing I am not certain about is the drive shaft. I have been told if the tailshaft is the short one, it should work. We'll see next weekend. __________________ a green one with some stuff done to it....

03-17-2008, 06:53 PM	#9
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: Yes another driveshaft question 10/4. I did my swap so long ago, I don't even remember if I swapped the drive shaft. I had a donor truck at the time.



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