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Old 03-17-2002, 11:13 AM
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'78 280 SL High RPM's

I have a '78 280 SL that revs at about 4000 RPM's at 110 KPH. Is that right? Seems like I should have another "overdrive" gear to drop into, but stays high. Is this normal? Is it just the gear ratio?

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Old 03-17-2002, 05:10 PM
Join Date: Mar 2000
Location: Gainesville FL
Posts: 6,844
Gearing is the way MB gets away with propelling a 3500lb auto with a 160 cubic inch motor and still call it a sportscar.

What you get down low can only be replaced up high with another gear. Since the engine has a 6000 redline (or so), you still should be able to go top speed which I would guess is almost 130.
Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician
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