C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Drive shaft length

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Old Jun 26, 2008 | 02:44 PM
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Default Drive shaft length

Can some one tell me the lenght of a C4 drive shaft both 6m and a4.

Thanks John.
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Old Jun 26, 2008 | 05:01 PM
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Length of '91 A4 from part that goes into rear extension housing of the 700R4 and connects to output shaft is ~33.5" on mine. Without the front part that splines onto the rear of the tranny it is exactly 29".

Hope that helps,

Jonathan

Last edited by janarvae; Jun 26, 2008 at 05:03 PM.
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Old Jun 26, 2008 | 06:49 PM
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thanks
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Old Jun 27, 2008 | 02:45 AM
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Got to jack my car tomorrow will get D44 shaft length for you.

I have 27 5/8" c/c of the uni's on a A4 shaft which is the way the driveshaft shops measure.
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Old Jun 27, 2008 | 03:22 AM
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D44 shaft measaures 26.75" +/- .0625 This is on a shaft that I believe is/was factory.

"rodj" is correct with the measuring point on the shaft "center to center" of u-joint.

Depending on the project if I had a A4 (D36) and was changing to M6 (D44) I'd use what I've got after having it shortened and balanced with new u-joints.

Why? You buy a used M6 (D44) you likely need to swap slip-yoke, needs u-joints, and "needs" to be balanced after the swap! Less expensive? Probably!

Last edited by WVZR-1; Jun 27, 2008 at 03:25 AM.
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Old Jun 27, 2008 | 04:07 AM
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Originally Posted by WVZR-1
+/- .0625
My eye-o-meter isn't that acturate
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Old Jun 27, 2008 | 04:45 AM
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Originally Posted by rodj
My eye-o-meter isn't that acturate
Hey "rodj" that's 1/16" or maybe 1.55mm I'd think your "eye" could catch that. I was actually just going to do a +/- and figured someone would "bust me"! I've had a couple done to the 26.75" and sold with D44's. I've never heard any of them "fuss"!
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