[W126 Coupe] Re: 450SL diff into 500SEC (560SEC)

[Gerry Van Zandt]

This swap can and has been done.  You have to take the 3.06 internals, do some deft machine-shop work to them to accommodate the ABS, and then transplant them into a 560 pumpkin.  Gary Dempsey (Chinook) and I are doing this right now.  Unfortunately with the 1986 and later cars, it isn't a bolt-in as it is with the earlier 380s and 500s.

The other challenge is speedometer calibration to make up for the increased RPMs at speed.  I will be taking the car to the drag strip in the opening weeks to determine the performance increase.  As a benchmark, my stock US-spec 560SEC obtained times of 15.1-15.2 on stock, street tires.  I will do runs with and without my drag radials after we get the swap completed. 

Cheers,
Gerry



On Wednesday, February 16, 2005, at 10:38AM, <mbcoupes-request at mbcoupes.com> wrote:

>Sure ?
>
>My 500 has 2.24 LSD (option 256 on the datacard, which is rear axle with 
>LSD).
>
>Externally the 3.06 LSD and 2.24 LSD on my 500 are exactly the same, apart 
>from the hole in the casing for the ABS pick-up.
>
>I believe Barry Corno has done this swap, i.e. 3.06 from 450SL straight onto 
>his early 380SEC. But I do not know if he had an issue with the ABS. I think 
>his was a direct bolt-on.
>
>Just wondering if the difference is from the ABS ?
>
>talbir
>

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Gerry Van Zandt
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