i've got NOTHING TO SAY but to such a posts... u guys really think the 996GT3 is any part as fast or as good as the 997GT3??? you guys all think that Porsche is retarded??? oh man...

Alan

 

Here you go http://www.motortrend.com/features/p...fications.html

 

Please refrain from putting words in the mouths of fellow members. Someone requested a link to a 996 GT3 test that showed comparable 1/4 mile performance and I merely obliged. Both tests were by C&D, albeit at different times, and the trap speeds are the same. No one doubts that the 997 is faster but until we have real world comparisons we'll just have to speculate based on the limited independent test data available. Make what you will of it, but don't attribute your misguided conclusions to anyone but yourself!

 

So it's better to draw wrong conclusions with limited data than to draw correct conclusions based on assumptions?

Remember, Porsche hasn't changed... the same underestimate of hp that applied to the 996GT3 will probably be carried over to the 997GT3 and if you think for a second that a car with 40hp less can consistently trap the same speed, you've got a bit to learn.

 

Thanks! That's amazing. The quickest 996GT3 quarter mile I've ever seen. It will be very interesting to see what a properly driven 997 can do! A sub 12sec quarter mile from a naturally aspirated 3.6L is unheard of.

 

Data, limited or otherwise, is objective. Assumptions are not!

BTW, it is worth noting that the car with 40 hp less in this discussion also weighs 190 lbs less. The results are not terribly surprising considering that trap speeds correlate to power-to-weight ratios. No one is arguing the fact that the 997 is the quicker/faster car, just what the difference will be.
Gee, thanks for stating the obvious!

 

I've got 3075lbs for the 997GT3 via Porsche USA
http://www.porsche.com/usa/models/91...s/?gtabindex=5

And 3043lbs for the 996GT3 (mkII) via Topspeed.com
http://www.topspeed.com/cars/porsche...96-ar1257.html

I'm not sure where you're getting 190lbs.

And if you want to conclude that the 996 is just as fast as the 997 based on a single comparison, go right ahead. Personally, I'll stick with assumptions and trust Porsche.

No prob... just making sure you understand... things don't seem to be quite as obvious for you.

 

My car is under 3000 lbs. I am sure that the 997 is definately a better car. The difference in performance is not big enough for any of us posting on here to notice. Check out the new Excellence.

 

996 GT3 curbweight: 3050 lbs. LINK

997 GT3 curb weight: 3240 lbs. LINK.

These are actual measured curb weights rather than quoted or estimated numbers so the 190 lb weight difference, hard as it may be to digest, is real!

My thoughts exactly!

 

misguided conclusion??? i merely said there is NO WAY a 996GT3 is as fast as the 997GT3... whats wrong with that?

Alan

 

As LUIS opined and as substantiated by both C&D's and MT's tests, the difference between these two cars is a lot closer than you'd like to believe! In any real world comparison, this would be a driver's race with the 997 having an edge.

Certainly not my opinioin so that would equate to putting words in my mouth.

 

How is the gearing between the two?
Any difference? I thought the 997 gearings were shorter.

 

Gear Ratio Comparison (same rear end ratio of 3.44:1):

Gea---------996 GT3--------------997 GT3
1-----------3.82------------------3.82
2-----------2.15------------------2.26
3-----------1.56------------------1.64
4-----------1.21------------------1.29
5-----------1.00------------------1.06
6-----------0.85------------------0.92

While 1st is identical, 2nd through 5th are roughly 5% shorter on the 997 (6th being 8% shorter). Not a signifcant difference but it takes advantage of the slightly higher redline on the 997 (8400 vs. 8200 rpm).

Upon further reseraching into the curb weights, I've gotten widly varying numbers for the 996, so the weight difference between the two may not be nearly as significant as I'd estimated based on the two C&D reports. This also restores my faith in Porsche's focus on weight reduction on these cars. I apologize for any confusion that this may have caused. C&D's measured poundage of 3240 for the 997 GT3 certainly seems off the mark!

 

With slightly shorter 2-6 gears and roughly 30-40 more rwhp ( Im not sure if this is correct though, anyone have a link?) , the 997 should trap 3-5 more mph right? Well, assuming the weight is similar btw 996 and 997. I wonder if the 997's needs to be broken in more...like 8-10k miles... to see the true power. Who knows, maybe the 997 really did gain a good 100-150 lbs.

 

I agree... I could see porsche being off by something like plus or minus 50lbs but to be off by 150lbs+ is a bit fishy. Maybe C&D forgot to get out of the car when they weighed in

Never-the-less, it was a very interesting article.