[dannichols1474]

I just got done doing the project you are starting with my 75 Carrera. The idea of building a 3.0 or 3.2 engine is good, but my car has the original engine and trans so I decided to rebuild the 2.7 - I went to 92 mm cylinders and 92 mm 9.5:1 pistons so I ended up with at 2808cc.

I spent extra $$ to install inserts on all of the case studs not just the head studs, shave the case halves flat, line bore back to standard, oil bypass modification, shuffle pins install. I also had the crank and rods rebuilt and balanced. Ollies Engineering in Lake Havasu City, AZ did the work which took 4 months and cost $5k.

The heads, cam towers and rockers went to Craig Garrett at G2 Performance in Grand Rapids, MI. Cost was $3k and took 6 weeks.

I bought a CIS to ITB EFI conversion kit from Al Kosmal / X-faktory.com.

I bought Wayne Dempsey's book, "How to Rebuild and Modify Porsche 911 Engines 1965-1989", read it, and rebuilt the engine myself with help from members on this forum (see the thread "CIS to ITB EFI Conversion").

I contacted William Knight (KNIGHTRACE) for engine design help and I installed his K45 camshafts and exhaust headers.

The transmission went to California Motorsports (CMS) in Lake Havasu City, AZ for rebuild with several upgrades for improved reliability. My trans was in pretty good shape so no new gears were needed. Cost of my rebuild was $10.5k and took 5 weeks.

When I got the car back together, I carefully went through the break-in procedure (and frequent oil/filter changes) and did a couple of dyno tune / test sessions getting the EFI tuning dialed in. It was a great learning experience and I got a satisfying result, but I had to be patient as the whole process took over 6 months to complete.

Good luck with your DIY project and have fun!