Driveshaft length questions - Chevelle Tech
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post #1 of 6 (permalink) Old May 22nd, 19, 2:19 AM Thread Starter
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Garret
 
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Driveshaft length questions

Good evening,

I just got my big block 72 Chevelle running (full rebuild). It’s a 454 and I’m running a Mikes Transmission Ultimate 400. I currently have a factory 10 bolt under the car. It will eventually have a Moser or Currie 12 bolt. My question is this:

Is the driveshaft the same length for using either the 10 or 12 with the 400 transmission? Or, are they way different?

I’d like to get a custom driveshaft made but I don’t want to use the distance between the trans and the 10 bolt if the 12 will be different.

If they are different, anyone have a cheap 10 bolt to 400 shaft in So Cal I could obtain.

Thanks for the help,

Cheers!!

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post #2 of 6 (permalink) Old May 22nd, 19, 7:14 AM
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Re: Driveshaft length questions

They should be same lenght between 10 bolt and 12 bolt.

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post #3 of 6 (permalink) Old May 22nd, 19, 9:06 AM
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Re: Driveshaft length questions

Also keep in mind what pinion flange U-Joint your 10-bolt has. It may have a GM 3R, 1330 or 1310 style u-joints in the rear of the drive shaft. A Moser or Currie 12-bolt should be configured the same if you want to use the same driveshaft. Many folks opt to upgrade to 1350 U-joints, myself included.

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post #4 of 6 (permalink) Old May 22nd, 19, 10:09 AM Thread Starter
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Garret
 
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Quote:
Originally Posted by David Bates View Post
Also keep in mind what pinion flange U-Joint your 10-bolt has. It may have a GM 3R, 1330 or 1310 style u-joints in the rear of the drive shaft. A Moser or Currie 12-bolt should be configured the same if you want to use the same driveshaft. Many folks opt to upgrade to 1350 U-joints, myself included.
I think I’d upgrade to a 1350 pinion u-joint flange for the 10-bolt so a custom driveshaft would fit and have the ends I want when the new rear end is completed.

That will make the transition much easier. It will allow me to get a custom made driveshaft to make the car roll and drive so I can get it onto a trailer much easier while the 12-bolt is being built.
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post #5 of 6 (permalink) Old May 22nd, 19, 10:09 AM Thread Starter
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Quote:
Originally Posted by Malibu ss 64 View Post
They should be same lenght between 10 bolt and 12 bolt.
Thanks for the information!!
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post #6 of 6 (permalink) Old May 23rd, 19, 4:36 PM
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Re: Driveshaft length questions

The 3-R drivelines were only on the 454s ( LS-5s & LS-6s ) in 1970. They continued with the 3 R drivelines in the 71/72 454s. Not sure about the 3-R drivelines past 1972-454s. ( the 454s used the GM-9210 pinion flange)
Bob


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