1974 911 stock 2.7 body interior motor and paint

[930 slant nose]

how can i get the most power out of stock car would change if had to cams cis head work whats the best way
thx in advance

[Oh Haha]

If it's a 2.7 your best bet is to replace it with a 3.0, 3.2 or , even better, a 3.6.

Sure, you COULD build a 2.7 but the cost to make any real power would not outweigh the basically "plug and play" of replacement.

You can even use the stock 915 gearbox.





For less $$$ you can buy a set of SSI heat exchangers(or headers if you don't need heat) and a performance muffler(m+k).

Buying these bits new would probably run ~$1000.

[930 slant nose]

sounds like alot of work putting a 3.6 in this car wiring computer fuel pumps cross bracing chassis and cutting trans for crank sensor and what else im not even sure oh and obii hook up and check engine light is there anything i missed
thx mike

[930 slant nose]

you need another car side by side thats the correct way i guess unless someone makes a kit for everything

[azasadny]

Get rid of the CIS and run Webers instead. That's what I did, but I really didn't do it for performance, I did it because my CIS was possessed by Satan. Throttle response is much better with the Webers and nothing else internal to the engine needs to be changed, just the fuel pump and fuel pressure regulator. As a side benefit, the engine compartment is much cleaner and easier to work on stuff back there!

[930 slant nose]

i feel that the cis is more efficient and better starts in all weather i know weber carbs have to be adjuted and to adjust them wow you have to wait for nice day no humid to me its not worth it had them on my previous car and had on my motorcycle

[Oh Haha]

Originally Posted by 930 slant nose

sounds like alot of work putting a 3.6 in this car wiring computer fuel pumps cross bracing chassis and cutting trans for crank sensor and what else im not even sure oh and obii hook up and check engine light is there anything i missed
thx mike

I agree that it's a huge task but it is an awesome combo.

A 3.0 would be the next option. Most everything is the same and no eletronics to mess around with.

What is your goal with this car?

More importantly, what is your budget? it takes big $$ to make big HP from these engines.

[930 slant nose]

im considering putting a 3.6 but id probably buy a wreck and then do the transplant i personally think thats the way to go

[Oh Haha]

Cool. Post your results when you get it completed.

[Rouxzy]

When my 2.7 got tired and needed a rebuild it was the same money to throw a 3.6 in. Benefits are more power, updated ignition and fuel systems, more power, better reliability, more power. Plus the 3.6 has alot more power.
Tom

[930 slant nose]

which had more power

[Oh Haha]

Originally Posted by Rouxzy

Benefits are more power, updated ignition and fuel systems, more power, better reliability, more power. Plus the 3.6 has alot more power.Tom