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

Question re: pulling C-beam and driveshaft

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Old May 30, 2006 | 12:43 PM
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Default Question re: pulling C-beam and driveshaft

I'm pulling the driveline out to replace the driveshaft yoke and am assuming that the tranny/engine will swing about the motor mounts. Can I just use a jack under the transmission to support it and keep it from moving?

Anything else to watch out for?

Steve
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Old May 30, 2006 | 12:50 PM
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yep. that will work fine. you will want the tranny to sag whilst removing the driveshaft and c-beam... after that, support it so it won't hurt the motor mounts.
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Old May 30, 2006 | 02:05 PM
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What Bogus said. I would use a 2x4 or other piece of wood in between the jack and the tranny to distribute the pressure on the tranny. You will need to move the tranny up/down on the jack to r/r the driveshaft and c beam (at least I did).
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Old May 30, 2006 | 02:11 PM
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thanks guys,

Will I need to have it supported while I'm jiggling it to get the drive shaft out, or is it balanced enough to support/manipulate by hand?
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Old May 30, 2006 | 02:28 PM
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I would stablize it... let the jack support the driveline while removing the c-beam bolts. once out, then lower the transmission to releave the tension on the driveshaft, then support it after.

If you have a tranny jack, that would rock.
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Old May 30, 2006 | 03:56 PM
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Support trans with jack, remove C-beam bolts, slide to the side, unbolt rear driveshaft ujoint straps, pull driveshaft out.

Don't remove the C-beam if you don't have to, it's a pain in the ***, at least on the 4+3 and 6speed.
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Old May 30, 2006 | 04:26 PM
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CC is right... just move it to the side. There is more than enough room.

Also, make marks on the transmission and rear end so you can realign the c-beam to fit exactly as before.
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Old May 30, 2006 | 05:39 PM
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Originally Posted by bogus
CC is right... just move it to the side. There is more than enough room.

Also, make marks on the transmission and rear end so you can realign the c-beam to fit exactly as before.
How much slop is in the C beam holes?
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Old May 30, 2006 | 10:07 PM
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There is a fair amount of slop in the holes and the trans can be moved up and down with the bolts in but loose. There is a spec in the manual for the clearance from the top of the trans to the floorboard. My manual is not handy or I would give you the measurement. I'm sure someone has it.
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Old May 31, 2006 | 12:04 AM
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I just did this yesterday!! It was pretty straight forward if you follow the advice allready given here
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