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Old 09-05-2002, 01:38 PM
Registered User
Join Date: Aug 2002
Posts: 32

Hey everyone i have a1979 280se with the 2.8 inline 6 and was wondering about something. At around 80mph the tach shows me at 4000 rpm is that right? Most cars at that speed are at atleast 2500 rpms.
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Old 09-05-2002, 02:16 PM
it leaks, its german
Join Date: Mar 2002
Location: raleigh nc
Posts: 1,111
Giime a few days to finish sorting out the project (77 280se, showed up with no engine in it and it's sat for 5 years) and when I test drive it, I'll see whats its at doing 60.

Project Smoker, '87 603 powered wagon
Hauler, 96 CTD can you say torque?
Toy 73 Cougar xr7 convertible
Acme Automotive Inc.
Raleigh NC
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Old 09-05-2002, 02:54 PM
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Join Date: Aug 1999
Location: Florida / N.H.
Posts: 8,768
I think they had ratios up in the high 3's.... like 3:92 s or :78's..
so don't expect low cruisin' RPMs.
The ratio is stamped in the lower , right casing on the diff. ... might want to take a peak there for exact specs.
Also, check that someone did not go w/low profile tires, as this makes it worse
The Euro "R" tires on the older Benzs were 80 profile, which is much taller than standard US specs.....
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Old 09-05-2002, 03:02 PM
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Join Date: Aug 2002
Posts: 32
What is gas mileage like for this car? Also, with a high gear ratio, doesn't that mean it should take off from a start alot quicker? It sucks at around 20 mph but when it hits 40 I'm gone. I think I'm running on 5 cylinders to cause my spark plugs don't look like they are working right.
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