997.2 3.6 dyno. vs E46 and F355
 

Dyno run is from my 2010 base carrera 3.6, manual trans. Dynojet 248. I have no real plans to mod the car, was just curious what it would put down and thought I would post the results if it happens to interest anyone.

Also overlayed the graph first against my (now sold) E46 M3, completely stock and against my 95 F355. (cat delete and capristo muffler)

They were all done some time apart but on the same dyno by the same operator (me).

All runs were done in 5th gear, for all cars.

997-

https://imagizer.imageshack.com/img924/3857/lqglIa.jpg

997 and M3-

https://imagizer.imageshack.com/img923/9423/JXnysW.jpg

997/M3/F355-

https://imagizer.imageshack.com/img923/4570/nOM0oI.jpg

Neat. I'd have thought the M3 would be stronger, and it's also impressive the way the Ferrari keeps making power at the high RPMs.

That what my first reaction also.... so what is it about the Ferrari engine design that does that?

I read in Christophorous... about 15 years ago.... in an interview with a Porsche engineer that one of their engine design objectives was to flatten the torque curve and and provide more torque earlier in the range. Honestly, I was appalled when I read that. For me, it told me that Porsche was catering to the poser market who did not know how to drive a sports car. You know, someone who floors it without downshifting. But anywho......

Peace
Bruce in Philly

Cam timing, head flow and very short intake runners. F355 is individual throttle body and 5 valve/cyl. That's also why it's -soft- at low/mid rpm, everything was tuned for high rpm. Not such a problem as it has short gearing.

The next generation 360 modena used a similar 5 valve engine but they bolstered the low/mid range torque with variable cam timing and dual inlet paths (long and short runners).

This:

Attachment 1346689

It's also why F355 with an exhaust sounds like a F1 engine...

Thanks for sharing- good info. So are we seeing that for the 997.2 3.6 there is less than (only) a 9% loss from flywheel to rear wheels? That is , 345 HP to 315 HP - that's good, always thought it was more like 15-20% loss. Don't know the torque number difference offhand though.

That loss is pretty consistent across all three cars. The M3 is 333 at the crank and the F355 is 375.

I'm impressed by the torque of the 997, on a relative basis. Very useful in a street car, and they did it without (apparently) sacrificing too much at the top end. It's all about the area under the curve, after all. The DFI 3.8L would probably be even more dominant in this regard. Now, if we could only have the short gearing from the 355, then you'd really have something. :-)

Thanks for sharing!