Author Topic: Rear end for an automatic 1971 280 sl change  (Read 2588 times)

BaronYoungman

  • Full Member
  • Gold
  • *****
  • USA, IL, Joliet
  • Posts: 606
  • Veronica...
Rear end for an automatic 1971 280 sl change
« on: April 07, 2010, 14:45:58 »
I have read the threads, I am confused.... For an automatic if I want to get the upgraded rear end for the highway I am looking for a w108 280 se 4.5... right?  and what years?
Thanks, Bob
Bob "Baron" Youngman
1971 280 SL silver  1 car 0 boxes
1983 500sec Wheeler Dealer AMG w AMG coupe
1965 220se coupe restomod
1988 560sec  Japan "Yakuza Car"

ja17

  • Full Member
  • Platinum
  • ******
  • USA, OH, Blacklick
  • Posts: 7414
Re: Rear end for an automatic 1971 280 sl change
« Reply #1 on: April 10, 2010, 13:19:10 »
The Mercedes 280SE, SEL, 4.5 liter V-8 engine sedans  (W108 chassis) have the 3.27 ratio. They were only produced in 1971 and 1972.  Earlier euro versions had a 3.5 liter V-8 with a 3.47 rear ratio. These will work well also but are scarce.

Things to watch out for.........

Make sure it is coming out of a W108 sedan with a V-8 engine (the six cylinder version do not have the right ratios)

Make sure no to get an air suspension rear differerntial by mistake (W109 chassis) it will not work.

Watch the rear diff. video so you will know how to check the rear diff for excessive "lash" play caused by a worn casting in the diff.

Always check the ratio stamped on the unit before you buy!
Joe Alexander
Blacklick, Ohio
1969 Dark Olive 280SL
2002 ML55 AMG (tow vehicle)
2002 SLK32 AMG (350 hp)
1982 300TD Wagon turbo 4spd.
1963 404 Mercedes Unimog (Swedish Army)
1989 flu419 Mercedes Unimog (US Army)
1998 E430
1974 450SLC Rally
1965 220SE Finback