986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - How can a 911 3.4 have so much more HP than a 3.2 Boxster S?

Jake Raby · 11-11-2013, 03:58 PM

Quote:

Originally Posted by BYprodriver

If you put 3.4 heads on a 2.7 you lost compression ratio & undoubtedly low rpm torque due to the bigger valves.

Hmmn, what head gasket was used? With the difference in bore size at a whopping 10.5mm of bore size difference I'd expect issues. What cams were used with this?

I think he is stating that he had a 2.7 and did a 3.4 engine conversion...