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03-29-2008 #1
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Very Confused - Driveshaft Length
so im swapping an LT1 with T56 into a69 camaro. i had a custom driveshaft made for it. i noticed that when i slid the yolk of the new driveshaft into the tranny til it bottomed out, the the opposite end (rearend side) was about an inch and a half short of the differential side. I then slid the yolf out an inch and a half so it would reach the differential.
Is this normal. i would of theought the yolk would be all the way inside the tranny... can anyone tell me if this is how its supposed to be or did they do the measurements wrong on my new driveshaft??????
"What is each day but a series of conflicts between the easy way and the right way?"
69 camaro, daytona blue. LS376-495 (Hotcam LS3), TR-6060 6-speed
Tubular control arms with coilovers
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03-29-2008 #2
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Sounds fine. Driveshaft needs to have some room in the trans tailstock to keep from pounding out the trans innards as the rear suspension articulates.
cheers
Ed N.Ed Nicholson
73 VW Super Beetle "Sports Bug"
95 Taurus SHO 5-speed -- new open-track beater
03-30-2008 #3
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What is the length of the yoke ,and how much is going in the trans ?
03-30-2008 #4
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id say its about 6 or so inches long, with about an inch and a half sticking out.
Originally Posted by paul67
"What is each day but a series of conflicts between the easy way and the right way?"
69 camaro, daytona blue. LS376-495 (Hotcam LS3), TR-6060 6-speed
Tubular control arms with coilovers
03-31-2008 #5
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Sounds about right to me. As said before, there has to be some wiggle room for that driveshaft.
The few, the proud, the crazy... the LT1 owners.
03-30-2008 #6
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The rear axle moves in an arc, farthest away from the trans when the front spring half is level.
1" is normal, 1.5" is getting a bit high, but probably ok.
What you do not want is for the yoke to ever bottom out, damage will result.
DavidDavid Pozzi http://www.pozziracing.com67 Camaro RS that will be faster than anything Mary owns.
03-31-2008 #7
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Is the rear end just hanging and the suspension in the rear unloaded or is it on jack stands? It doesn't sound too bad.
Trey
"The early bird may get the worm, but the second mouse gets the cheese."
~ Jon Hammond
1979 WS6 Trans Am stock LT1/T56 drive train out of my Formula. BMW M-parallel rims. C5/C6 brakes
build thread https://www.pro-touring.com/showthre...ghlight=begins
03-31-2008 #8
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nope, not lift or on jacks, this is as is, sitting on the ground.
"What is each day but a series of conflicts between the easy way and the right way?"
69 camaro, daytona blue. LS376-495 (Hotcam LS3), TR-6060 6-speed
Tubular control arms with coilovers
04-01-2008 #9
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Doode, I stumbled across this webpage you should check out: http://www.9c1.com/technical/info/driveshaft.htm
Apparently to check to see if your driveshaft length is correct, just jam it into the transmission until it bottoms out. Then measure the distance between the u-joint and the pinion yoke. This should be less than 3/8". See below:
The few, the proud, the crazy... the LT1 owners.
04-01-2008 #10
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I've heard a good rule of thumb is 1/2" minimum slip yoke travel for a mild build, and 3/4" to 1" for something that's got a lot of power and/or will be launching hard at the drag strip. Anything over 1" of travel at ride height and you might have to worry about the yoke to output shaft spline engagement.
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