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Help with identifying engine number

A buddy of mine just got an old 911. They guy who sold it said it had a 3.0L. The engine number is 6271659. Can anyone confirm? Thanks.

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Old 08-09-2009, 02:00 PM
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That looks to be a U.S 2.7 liter S engine for a 77 911. A 3.0 would have the numbers, 667XXXX if it was from a 77 car.
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Last edited by ossiblue; 08-09-2009 at 04:54 PM..
Old 08-09-2009, 04:51 PM
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yikes.
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Old 08-09-2009, 05:23 PM
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Yep, 2.7 engine from a 1977 Targa.
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Old 08-09-2009, 06:18 PM
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sweet. thats pretty much the worst year for Porsche....

thanks for all your help
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Old 08-09-2009, 07:12 PM
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Quote:
Originally Posted by carnitasboy View Post
sweet. thats pretty much the worst year for Porsche....

thanks for all your help
Yes and no. It's quite possible that the problems with the 2.7 had been addressed by the PO, and even rebuilt to 3.0 specs. No way to tell without further investigation. There is no reason why the engine may not be a solid performer. Identifying its origin is only the first step for a 32 year old engine.
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Old 08-10-2009, 06:36 AM
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Quote:
Originally Posted by carnitasboy View Post
sweet. thats pretty much the worst year for Porsche....

thanks for all your help
well the good news is it was followed up by pretty much the best engine ever built by Porsche ..
Old 08-10-2009, 07:10 AM
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Quote:
Originally Posted by carnitasboy View Post
sweet. thats pretty much the worst year for Porsche....
Actually, I beg to differ. '75/76 cars were far more troublesome. '77 engines got aluminum timing chain housings, vastly improved valve guides, re-designed chain guides (ramps) and improved chain tensioners. O-ring and gasket technology also improved. The '77 car actually was a valuable link in the development of the SC, and '77 engines routinely lasted 100K + miles.

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Old 08-10-2009, 08:00 AM
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