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Old 04-29-2002, 01:55 PM
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How can I find out if my 79 450 SL is a 4.5 or a 6.9L?

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Old 04-29-2002, 03:43 PM
mikemover's Avatar
All-seeing, all-knowing.
Join Date: Aug 2001
Location: Atlanta, GA
Posts: 5,514
If there's no documentation in or on your car that tells you, you can call your local MB dealer and give them the VIN #--they can tell you using that.

1979 300 SD
350,000 miles
1982 300D-gone---sold to a buddy
1985 300TD
270,000 miles
1994 E320
not my favorite, but the wife wanted it
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Old 04-29-2002, 03:53 PM
GermanStar's Avatar
Annelid wrangler
Join Date: Apr 2002
Location: Fountain Hills, AZ
Posts: 4,918
It's a 4.5 -- there are no 6.9 SLs.

German Star
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Old 04-29-2002, 03:56 PM
blackmercedes's Avatar
Just a guy
Join Date: Dec 2000
Location: St. Albert, Alberta, Canada
Posts: 3,492
I don't think the 6.9 engine was factory produced in the R107 SL chassis. I've heard of some conversions, but they are durn expensive.

You're probably packing the iron block 4.5 engine. Don't despair though, as it's a great mill.
John Shellenberg
1998 C230 "Black Betty" 240K

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Old 04-29-2002, 06:44 PM
sixto's Avatar
smoke gets in your eyes
Join Date: Jun 2000
Location: SF Bay Area
Posts: 18,745
See how long it takes to get to 140mph and report back

91 300SE
87 300SDL
81 300SD
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