Horsepower & Torque

[mordecaibrown]

My 1977 911s had a recent engine rebuilt with new New Chain Tensioners plus new SSI's & muffler. Does this add Horsepower & Torque? Or just make the car a bit quicker by removing the smog system the car had originally. The car was owned by a engineer who close to 40 years. He kept a complete library on servicing the car all these years. Here is a link on one of the binders he kept on the engine rebuild.

Thanks

Sam

https://www.flickr.com/photos/124038604@N05/albums/72157714343470826/with/49906442016/

https://www.flickr.com/photos/124038604@N05/albums/72157715333541146

[Glenfield]

Keeping the Ferrari sticker on the side has to be good for a few extra horses!

[mordecaibrown]

Originally Posted by Glenfield

Keeping the Ferrari sticker on the side has to be good for a few extra horses!

That was changed to a Porsche sticker!!

[Trackrash]

Basically what you have done is backdate to the '74 specs. The '74 S was rated at 175 hp and the '77 was rated at 165. So you may have added 10 HP. BTW if you have a sport muffler those can be worth another 10 HP over the stock one.

[mordecaibrown]

Thanks good to know about adding the sports muffler! But similar HP now without the sports muffler to a 68/69 911s

[RWebb]

the new SSI's & muffler will be a lot happier with different cams and induction - that is where you can pick up some pow-pow

[75 911s]

Wow beautiful car! Agreed, webers and cams and lighten the car.