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2008 Dinan Stroker M5 versus 2009 Cadillac CTS-V

17K views 100 replies 46 participants last post by  RaceMX-M3 
#1 ·


Both cars dyno'd 456rwhp on Classic BMW's dynodynamics this Saturday. The CTS-V showed 450+ rwtq though and my stroker only posted 330+ rwtq.

Watch the video and we can discuss afterwards...
 
#87 ·
60-130 times are probably one of the best real world comparisons for cars. That being said, some cars are going to be much better than others based on 60-130 times just based on their own specific advantages.

If anything, our M's are at a disadvantage in the 60-130 category. If the speed interval was moved up (say, 130-190) then our cars would have an inherent advantage.

Otherwise, in a much earlier post (at least a page back) we were talking about the amount of air consumed by a motor. Someone stated that the S85 and S62 should have similar ratings because one is 5L at 8200RPM and the other is 5L at 7200RPM.

While your basic calculation is correct, there are other factors to consider, such as whether the equivalent of 5L of air at ambient pressure and temperature is taken into the engine. If the intake is not as efficient and the air has too much suction it will become less pressurized and have less actual air entering the motor.
 
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#88 ·
ZO6 Vs M5

As a former Z owner that converted to an M5, I can attest to the relatively low cost of a set of long tube headers, hot tune, and Cold Air kit that typically go on a ZO6 by a good percentage of owners. These three mods will typically add 35-45 rwhp to a Z and can easily be added for approximately $3500.00 or less. A street cam with springs and rockers can be done for less than this. These changes make an average Z driver a hero especially if a race from a dig can be avoided. The car is handful on the street for a lot of Vette drivers when rwhp is in the 525-560 range. The downfall of many Z drivers is that these mods are not ever checked on a dyno to see if they are truly dialed-in. My .02.
 
#89 · (Edited)
Holy smokes...I don't check this thread for a day or so and when I come back it's gone nuts.

Folks, let me reiterate a few points once again:

1. Nobody is saying this was a "fair" comparison (stock versus modded setup)
2. I'm not looking for "easy" prey and picking on stock cars to slap around
3. This impromptu comparison was done very ad-hoc immediately after our dynos to validate or invalidate my dyno numbers because they are perplexing

Can we get off the topic of "a chevy/gm can be modded for $5 and pull out 100 rwhp" discussion. We all know this folks. I personally know Fubar will go and have his car modded by this coming weekend probably ;) and bring an entirely new game face to the car meet next weekend and possibly show me a thing or two.

I'm not sure why, but whenever runs like this are posted the three most common comments are:

1. Congratulations to the winning car
2. How the losing car cannot be compared to the winning car because it was half price of the winning car + mods
3. For $5000 the losing car will be made into a NHRA drag qualifying funny car

Somehow this thread, which was meant to focus on the confusion and inadequacy of dynos for the stroker, turned into a pissing match and immature behaviour. I'm even amazed at how people from the same marque are getting shots in on each other and becoming defensive, rather than supportive.

Is this what the M5board has turned in to?
 
#92 ·
Always a gentleman... I do not plan on modding the CTS for a few weeks at least. I want to get the 5000 mile break-in put to bed. However, I would like to run again soon. Hopefully with a little more experience under my belt I will be able to manage the transmission better.

:cheers:
 
#94 · (Edited)
Call me crazy (or for this matter... anything else if you would like) but I think vbox 60-130mph times and 1/4 mile track times are both relevant in testing the performance of cars.

The 60-130mph times are a great simulation of a highway roll-on. It is more precise given that it takes away the advantage of someone who jumps/better reaction time and for the most part isolates the car against the clock.

The 1/4 mile track times are a great simulation for the old stoplight drag. This would heavily rely on traction and skill getting off the line. But it is also great for demonstrating the impact of torque (provided you have enough traction). The 1/4 mile trap speed also will show you how much power a car is putting down.

Here is my prediction.... Stroker M5 will run a lower ET on drag radials than the ASR NOS M5...but the ASR NOS M5 will trap higher. ET is primarily a function of the launch...and the ASR M5 is not hitting the bottle until it is down the track.

Tom
 
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#95 ·
This thread reminds me of this video:



I will leave it to your distinguished folks to say who plays who. Maybe you guys want to put some skin in the game? :grinyes:
$80 damnnnnn, put it all on the line
 
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