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catuck catuck is offline
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Join Date: Oct 2002
Location: Bolton, MA
Posts: 717
So, I see that some 2.7's have thick flanges, and some thin?
Most likely thin on your '75 engine. From my experience, the thicker flange SSI's also have extensions that "plug" into your exhaust ports. I believe the 2.7 has smaller exhaust ports than the 3.0 and the thick flange SSI's won't fit even if you replace the studs. If you buy the thin flange SSI's and realize your studs are too long, you could replace the studs. This is what I had to do on my 3.2 to get the SSI's from my 2.7 to fit.
'75 911s 3.2 - Ice Green Metallic
'05 Boxster S
'14 Audi A6 3.0
18 Tesla ModelX 100D
Old 01-29-2004, 06:12 AM
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