Top Secret: z28 dyno numbers

[Q-ship]

Originally Posted by chrisx66

I'm not sure if the OP's info is correct, but i have been at Shaver Racing Engines when GM was using their dyno's for testing.

They had an Ecotech for the Cobalt SS and a 6.0 LS with VVT. There was one 6.0 on the dyno and one apart on the bench, it used a camshaft with tapered lobes, the roller lifter rollers were just a ball bearing follower, and the rear cam plug had a hydraulic mechanism that pushed the camshaft forward causing changing the lift and duration via the taper ground in the camshaft.

This was quite a few years back, so at that time GM was using other shops dyno's, i dont know if they do now.

Yeap Shaver's did dyno work on the Ecotec, but it wasn't anything that found its way on to a production Cobalt. All that work was for the GMPP and the race car that Bothwells was campaining at the time. GM would not use some shops dyno to test there dyno either, nor would they have to worry about anyone calling BS on an in house dyno at ANY of the OEMs. There are standards that are strickly held to and administered by Sociaty of Automotive Engineers. I am calling BS on the outside shop in AZ doing dyno testing on a high profile prototype.

BTW way people the ZR1 is putting 530 to the tires but the Z28 will not, it isn't getting the LS9 engine. The CTS-V is numbers closer to what we will see, I bet GM will give it a special tune over the CTS-V.

[Scarrzz]

.

I will believe when I start laying down the rubber, which will be right after I lay down the greenbacks.

But I'm -OH- so ready to believe.

.

[SilverTurtle]

580bhp


that is all

[hairtrigger]

Originally Posted by SilverTurtle

580bhp


that is all

Damn I was hoping for the LS9

[lil_red_v6]

i think bs on this whole thread. all my 0.2

[Tallboy]

Originally Posted by lil_red_v6

i think bs on this whole thread. all my 0.2

Careful, now. I said the same thing and my post got nuked...

[Fleet1]

My money says 585 at the crank

[davidcroft]

489 RWHP is definitely a thrown out there #. It's actually not that impressive. The Callaway Camaros out now Dyno more than that. We dyno'd our first one at 515 RWHP. Plus these are out now with a factory warranty and going to be a lot more exclusive than a Z28.

[tweeter81]

Originally Posted by davidcroft

489 RWHP is definitely a thrown out there #. It's actually not that impressive. The Callaway Camaros out now Dyno more than that. We dyno'd our first one at 515 RWHP. Plus these are out now with a factory warranty and going to be a lot more exclusive than a Z28.

Let's be real here, if the real number is anywhere near the 489 rwHP, I would tend to think that is very impressive compared to the exhorbitant cost of the Callaway modifications per HP that is achieved. And I'm not sure what world you are living on, but anywhere near 500 rwHP is going to be FREAKING RIDICULOUSLY FAST! So fast indeed, that anyone who owns a car that has that much power should realize that there is no way you could safely use that power on the street.

Let's take a look at the numbers:

Callaway SC Camaro SS = $35K (for SS) + $20K (Callaway mods) = $55K
(for 515 rwHP, absolutely no body mods, no suspension mods, and bunch of Callaway badges that nobody cares about)

Factory Camaro Z/28 = $45K-$50K (a guess, but anybody with any common sense will realize that GM is not going to sell this car for more than a GT500)
(for 480 rwHP (again, a guess that I think is a bit high, for the record), body mods, most likely a vastly superior suspension setup, huge badass CTS-V 6-pot front brake calipers, and a bunch of Z/28 badges that people do care about)

So:

Callaway SS = Price per rwHP ratio = $106.80 per rwHP

Camaro Z/28 = Price per rwHP ratio = $104.17 per rwHP

In case you were wondering, the lower the number, the better, lol.

And then comes the other reality. On any roadcourse, the Z/28's superior handling/braking abilities (speculation at this time, but using common sense again) of the Z/28 (even with a slight HP disadvantage) will allow it to run circles around a SC'ed SS any day of the week. Now it is true that Callaway does have options to upgrade the other components of the car (CF aero stuff, coilovers, big brake kit, etc.), but I am not sure that I would want to spend another $15K-$20K to get the rest of the car up to snuff.

Long story, short, my money is on the Z/28.

[DGthe3]

Originally Posted by tweeter81

Factory Camaro Z/28 = $45K-$50K (a guess, but anybody with any common sense will realize that GM is not going to sell this car for more than a GT500)

What is your rationale for thinking the Z28 must be cheaper than the GT500?

LS - - -- Base V6
22,680 - 22,995

2LT - - - V6 Premium
27,225 - 26,695

1SS - - -GT
30,945 - 30,495

2SS - - -GT Permium
34,295 - 33,695

Z28 - - -GT500
45,000? 49,495

Almost every trim level is a bit more expensive for the Camaro than it is for the comparable Mustang, so it doesn't really make any sense that they'd undercut the GT500 by up to $4500.

[GQ4Life]

I'm not sure what world you are living on, but anywhere near 500 rwHP is going to be FREAKING RIDICULOUSLY FAST! So fast indeed, that anyone who owns a car that has that much power should realize that there is no way you could safely use on the street

I think my car is very safe & streetable... no problems here..

[DGthe3]

Originally Posted by GQ4Life

I think my car is very safe & streetable... no problems here..

You can drive your car on the street, but can you use all its power on the street ... legally?

[GQ4Life]

I use it legally. Get up to highway speed of 75mph easily... never problem merging haha
wwhen I was on street tires traction control would just kick in in higher RPMs but vortech is very streetable supercharger.. now with drag radials its fine ... as long as they tune to gradually build power & fit it wide tires be fine on the street for most. granted I would be worried about some less skilled drivers getting in such rwd cars

Like some guy buying for his 16yr old son

[Supercharged SS]

Originally Posted by DGthe3

You can drive your car on the street, but can you use all its power on the street ... legally?

I would say that I use about 1/4 of the throttle. Any more than that, or to aggressively, you're all done! Especially when the tires are cold or the roads, which in CT, is about 6 months out of the year. I'm still afraid to have it downshift to fast (especially on the highway) and fish tale. but with my setup it all comes in at 3500 so you do need to pay attention.