Clarifying the dream 3.0 build
 

I'm starting to narrow the field of potential cars to buy. I'm really closing in on 78-79 SC's. I would like to get the car and do some bolt on mods and then eventually do a rebuild for the final push. The goal would be to make a 10lbs/hp car.

Starting with a large port 3.0

Bolt ons - PMO's (40 or 46's?) or ITB EFI
SSI's
M&K muffler

Mods for engine rebuild:

98mm pistons and cylinders
Twin Plug
12 plug dizzy
Tranny cooler
cams (unsure of grind)


Questions:

Am I out to lunch with my wish to get around 250-270 hp with good low to mid range torque?

Is there a better or more common accepted solution for this problem?

Are there any problems that I need to pay attention to or look out for?

Is there really any benefit to the big port heads on the early SC's?

bump for the long weekend.

You aren't out of line at all. A short stroke 3.2 should be able to get there without issues with the right cam choice.

Good read:
http://forums.pelicanparts.com/porsche-911-technical-forum/452730-what-best-cam-set-up.html
http://forums.pelicanparts.com/911-engine-rebuilding-forum/460737-question-all-those-who-have-3-2l-short-stroke-w-46mm-pmos.html
http://forums.pelicanparts.com/porsche-911-technical-forum/362326-first-dyno-run.html
http://forums.pelicanparts.com/911-engine-rebuilding-forum/343827-wanna-build-ss-3-2-a.html

These should answer most of your questions.