GM Inside News Forum banner
1 - 20 of 42 Posts

·
Registered
Joined
·
8,963 Posts
Discussion Starter · #1 ·
"Z28/LSA Dyno Results

A little birdie dropped off a note today regarding the '10 Camaro Z28 with supercharged (1.9 TVS) 6.2L/LSA:


Quote:
The Z28 will also have 550+ HP that's underated. The dyno chart showed 520 RWHP 492 RWTQ. Changing a pulley and adding a tune & exhaust the thing had 615 RWHP and 602 RWTQ. They said that that was with a mid size pulley. They have smaller ones.

On the downside the car will weight at or over 4000lbs.

The SS is still going to be 430hp from a LS3 (3900lbs). It's gone [email protected] in testing. "

This is supposed to be from an extremely reliable source. I hope they are right about the power (the good) but wrong about the weight (the bad). I'm hoping that GM is sandbagging and can actually bring the Camaro in several hundred pounds lighter than the G8.
 

·
Registered
Joined
·
5,569 Posts
ok....?
 

·
Premium Member
Joined
·
8,886 Posts
The Z28 will have 550+ HP that's underated. The dyno chart showed 520 RWHP 492.

The SS is still going to be 430hp from a LS3
Doesn't the engine have to be dynoed by the SAE? How can they "underrate" it then? I thought the new rule was all engines in all new cars must have SAE ratings. Thus, no more funny business with HP numbers.
 

·
Registered
Joined
·
80 Posts
Doesn't the engine have to be dynoed by the SAE? How can they "underrate" it then? I thought the new rule was all engines in all new cars must have SAE ratings. Thus, no more funny business with HP numbers.

That is exactly how it can be underrated. In preliminary testing, they are saying it is at least 550 horsepower. The same as how the Edge came with 265 hp instead of the estimated 250 or the ZR-1 came with 638 hp instead of the estimated 620. It is better to lowball the figure and have their expectations be exceeded.
 

·
Registered
Joined
·
294 Posts
Tantalyzing power #'s. Where is all the weight coming from? Remember the 1LE package? Roll-up windows, no a/c, no-nonsense Camaro. Hope they bring that back.
 

·
Registered
Joined
·
13,043 Posts
Toldya so about the weight.

The power and acceleration numbers are impressive. They sound similar to what the 2010 5.0 Mustang will be running, at least for the SS. No idea what SVT has in mind for the new Shelby, though. Conventional wisdom suggests a 5.0 EcoBoost that I've heard about in development, but who knows.

All in all, it's a good time to be a fan of performance cars, and it's likely this will be the last we see of big displacement, high-powered vehicles in our lifetimes. Future Mustangs and Camaros will need to make due with smaller displacements and less piggish weights.
 

·
Registered
Joined
·
1,171 Posts
"Z28/LSA Dyno Results

A little birdie dropped off a note today regarding the '10 Camaro Z28 with supercharged (1.9 TVS) 6.2L/LSA:


Quote:
The Z28 will also have 550+ HP that's underated. The dyno chart showed 520 RWHP 492 RWTQ. Changing a pulley and adding a tune & exhaust the thing had 615 RWHP and 602 RWTQ. They said that that was with a mid size pulley. They have smaller ones.

On the downside the car will weight at or over 4000lbs.

The SS is still going to be 430hp from a LS3 (3900lbs). It's gone [email protected] in testing. "

This is supposed to be from an extremely reliable source. I hope they are right about the power (the good) but wrong about the weight (the bad). I'm hoping that GM is sandbagging and can actually bring the Camaro in several hundred pounds lighter than the G8.
If true then things sure have changed since the 1st generation when the SS was the king.:yup:
 

·
Registered
Joined
·
11,215 Posts
The SS is the top model as evidenced by 500+ hp.
What evidence. The only evidence we have is above and it is the opposite. The SS should be the ultimate, so hopefully the above is incorrect.
 

·
Registered
Joined
·
2,903 Posts
What evidence. The only evidence we have is above and it is the opposite. The SS should be the ultimate, so hopefully the above is incorrect.
I guess I'm somewhat dyslexic today as I read that completely wrong and had it all backwards. The SS should be the top model so the Z28 having more power is kinda ass backwards. Oh well, I've given up on trying to understand anything the General does anymore.
 

·
Premium Member
Joined
·
14,963 Posts
Ugh...here goes another Z28 vs SS battle.

From 1967 to 1997, the Z28 has been the top performance model of Camaro.

Teh Z28 was the race car. The 302, while advertissed 290hp, could outrun ANY SS camaro outside of the top L78 396 solid roller big block, but as soon as there was a turn, the SS fell back greatly.
In 1970, the rules to Trans Am loosened up and the Z28 got a 350 LT-1 making 360hp, easily outperforming ANY OTHER CAMARO. SS turned into LT and remained that way to the 80's. Z28 with IROC trim got enhanced performance add ons and represented the race version driven in IROC series.
It wasnt till Street Legal Performance or SLP decided to supply Tier 1 performance parts from the factory did the SS ever go above the Z28.

SS is the top performance for main line Chevy, but Corvette and Camaro will not because of thier history (Z06, ZR1, Z28).

Many Camaro people have sent letters making sure that Z28 returns to the throne, and GM has listened.



Now, the Z28 with the LSA and all the equipment taht goes along with it will be over 4k. Thats sad, but understandable. The V6 and SS car will NOT be over 4k, but about 3700-3800lbs. The Z28 weights as much as the SRT8, but will have 125+ more hp, and another 50+hp over the GT500, 10 more HP over the GT500KR.
 

·
Premium Member
Joined
·
15,292 Posts
Ugh...here goes another Z28 vs SS battle.

From 1967 to 1997, the Z28 has been the top performance model of Camaro.

Teh Z28 was the race car. The 302, while advertissed 290hp, could outrun ANY SS camaro outside of the top L78 396 solid roller big block, but as soon as there was a turn, the SS fell back greatly.
In 1970, the rules to Trans Am loosened up and the Z28 got a 350 LT-1 making 360hp, easily outperforming ANY OTHER CAMARO. SS turned into LT and remained that way to the 80's. Z28 with IROC trim got enhanced performance add ons and represented the race version driven in IROC series.
It wasnt till Street Legal Performance or SLP decided to supply Tier 1 performance parts from the factory did the SS ever go above the Z28.

SS is the top performance for main line Chevy, but Corvette and Camaro will not because of thier history (Z06, ZR1, Z28).

Many Camaro people have sent letters making sure that Z28 returns to the throne, and GM has listened.



Now, the Z28 with the LSA and all the equipment taht goes along with it will be over 4k. Thats sad, but understandable. The V6 and SS car will NOT be over 4k, but about 3700-3800lbs. The Z28 weights as much as the SRT8, but will have 125+ more hp, and another 50+hp over the GT500, 10 more HP over the GT500KR.
I always enjoy your Camaro posts, as they have the rare combination of enthusiasm and knowledge that's so hard to come by these days.

I will say, though, since we're talking about 2010 cars, we really don't know what the output of the SRT8s will be. The regular Hemis will have more power for '09, so the SRT models are due for a boost.
 

·
Registered
Joined
·
8,963 Posts
Discussion Starter · #17 ·
Doesn't the engine have to be dynoed by the SAE? How can they "underrate" it then? I thought the new rule was all engines in all new cars must have SAE ratings. Thus, no more funny business with HP numbers.
The manufacturers can still underestimate the power as much as they want. They new SAE rules have been tightened up to not allow some of the tricks that can be pulled to show your engine making more power, thus being rated higher than it really will be once it's in a car.
 

·
Registered
Joined
·
2,903 Posts
Doesn't the engine have to be dynoed by the SAE? How can they "underrate" it then? I thought the new rule was all engines in all new cars must have SAE ratings. Thus, no more funny business with HP numbers.
The issue isn't with underrating but more with overrating the HP numbers. More than a few manufacturers were stating HP numbers that they couldn't meet. A couple that come to mind are the Mazda RX8 and the Ford Cobra 4.6L DOHC motors(first gen). The actual HP numbers were less than what Mazda and Ford had quoted. I believe Hyundai or Kia also had some issues meeting their HP quotes as well.
 

·
Premium Member
Joined
·
14,963 Posts
I always enjoy your Camaro posts, as they have the rare combination of enthusiasm and knowledge that's so hard to come by these days.

I will say, though, since we're talking about 2010 cars, we really don't know what the output of the SRT8s will be. The regular Hemis will have more power for '09, so the SRT models are due for a boost.
Thank you sir.

True, we dont, but the bigger SRT8 6.4 Hemi isnt coing around till 2012, if it makes it that far. I wonder if Chrysler will look into supercharging as a means of increasing power instead of increasing displacement.
I also await direct injected Hemi's as well.
the RT vs SS will be a good battle but going by power numbers so far, and some understanding of weight, the Camaro will probably be the best performance car out of the 3 pony cars.
 

·
Registered
Joined
·
2,094 Posts
GM horses just seem to be bigger than other brand horses......remember the 2001/2002 SS with only "325 HP" running easy 12's ?? I've owned 14 Camaro's in the past and as this info keeps' coming out, I hope it will be 15. I'm only using 1/4 mile as a measuring stick for power. I don't care about whether its a SS or a Z28......The SLP cars just made the Z28 look better with the 17" wheels and the hood and deck add ons. Plus you know SLP will have a ton of stuff for this car.
 
1 - 20 of 42 Posts
Top