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928 Pro Tour LS3 / Z06 Build

Old 05-02-2019, 04:16 PM
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I am installing a complete LS3 Corvette drivetrain into a 1981 928, could you briefly fill me in on the way you mounted the torque tube and any modifications you made?

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Old 05-02-2019, 04:24 PM
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I am in the process of doing the same conversion to a 1981 five speed. I have purchased the adapter hubs from 928 Motorsports but not the transaxle mount as yet. Are there alternatives to altering the torque tube. Is it possible to use it as is maybe with spacers?
I would have loved to avoid having to shorten the driveshaft and Torque tube, and tried like crazy to do just that. Couldn't get the rear 928 suspension to fit back into the car correctly with the longer C5 torque tube, that's what made it necessary. It is close-ish, but this is one of those deals where close isn't good enough.
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Old 05-02-2019, 04:36 PM
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Originally Posted by Arneil View Post
I am installing a complete LS3 Corvette drive-train into a 1981 928, could you briefly fill me in on the way you mounted the torque tube and any modifications you made?
I purchased the 928 Motorsports kit, which comes with the modified rear cross member, modified TT and other parts. I believe my car was the first LS3 to C5 rear end conversion that Carl had done with the modified TT, so there were some teething issues, that got worked out on my end.
I spent hours in the forum reading about other builds....Just Peachy, Empty Shell, Xchop and Dinsdale. If you haven't read my thread or the others, then you should start there. Carl is a business and does R&D on his products, which cost time and money, so unless you buy his kits, I doubt he will offer up any secrets. As for the rest of us and our builds, there are no two builds alike and each one has there own little tweaks and secrets that might not be shared in the forum. I'm not opposed to helping, but if you read the builds, you probably answer most of your questions.

Best of luck with your build and please start a thread and share your build, you will be surprised how many people will be able to help with questions you might have.
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