How much
 

I/we are considering rebuilding a 3.0 for our '75 911s. Roughly how many special tools and how much of a $$ investment is required for special tooling?

thanks

If you are doing it yourself search for my build. It is called rookie 3.0 rebuild.

probably around 4 times as much as you're thinking.. if asking this.

1k?

Depends on what you've already got in the garage for tools. My toolbox was already well-stocked (torque wrenches, sockets, lots of metric tools from wrenching on other German cars) when I started my 2.7 rebuild. I think I spent ~$1k on engine yoke, special cam tools, clutch alignment tool, various new wrenches, and raw material to improvise some tools (like the rear main seal install tool, flywheel holder, etc). Take a look at Pelican's engine tool section.

There is a book on this.
Pelican Parts - European Automotive Parts and Accessories - Porsche • BMW • Mercedes • Volkswagen • Audi • Saab • Volvo • MINI
It is a worthwhile investment.

1k is about right...

Thanks, I have most basic sockets,wrenches, blah,blah.

1k is a reasonable $ to invest.

BTW, how does she run? what would/would not have done

From the Porsche Repair Manual
 

If you're planning to purchase the tools you need (i.e., you don't have and can't borrow) you should figure more like $2k all in.

And again, it depends on how much you're planning to do and what you find when you open her up.

I was in the same boat about 2.5 years ago, needing to drop the engine to replace broken head studs on my 3.2 with nothing else (seemingly) needed. Just do it over time and buy the bits a little at a time and before you know it, you'll be raising the engine/trans back into the car.

But I think $1k is a little light for planning purposes.

Good luck.