Quick question about the Z28.....

Now I hardly know anything about these cars, I just wanted to know what the stock specs on a Z28 are, hp and torque etc... What are some stock 1/4 mile times that you guys have done or you guys have heard. Thanks:alien:

The 2002 Camaro Z28 comes with an LS1 motor that produces 310 hp and 340 lb of torque. The stock 6-speed ones do around 13.5

Originally posted by Lingenfelter
The 2002 Camaro Z28 comes with an LS1 motor that produces 310 hp and 340 lb of torque. The stock 6-speed ones do around 13.5

They are also the same cars used by police for pusuits and stuff. The sad thing is that my local police department doesn't even use them they just sit there.

The new SS and Z28 Camaro's have virtually no difference in straight line ferformance. Auto's are capable of mid to low 13's with well driven six speeds dipping into the high 12's stock. For example, what should be the slowest available LS1 Z-28 setup: a 2.73 rear automatic convertible, was tested by Car and Driver and ran 13.8 @ 106.

The new SS and Z28 Camaro's have virtually no difference in straight line ferformance. Auto's are capable of mid to low 13's with well driven six speeds dipping into the high 12's stock. For example, what should be the slowest available LS1 Z-28 setup: a 2.73 rear automatic convertible, was tested by Car and Driver and ran 13.8 @ 106. The LS1's are also underrated by GM. They put out around 340-350 hp stock. It's most likely underrated so as not to encroach on the Vette's 350hp rating.

You not completly right first the SS with a 6-speed has never done high twelves stock. They do low 13s from factorI dont car if the best driver drives it. But i have to agree GM did underrate them i believe that they would have more horsepower all though they did mess up on the 00 model with the piston rings.

why is it that car manufacturers never get anything right the first time ?

I have personally witnessed a few SS's and Z-28's run high twelve's stock. GM High-Tech Performance magazine, and also Muscle Mustangs and Fast Fords Magazine have gotten each to run a high twelve bone stock on stock tires. GMHTP did it with a Z-28 and MMFF did it with an SS. MMFF went as far to say that if it had'nt been super humid that day, a 12.7 was not out of the question. The ones I witnessed went 12.9's and 12.8's at 108 mph. They were all on stock tires, no lid, and way too quiet too have a cut out. 108 mph is plenty of trap speed for a car of that weight to run a 12, if you can get it to hook. I will also say that my local tracks are very close to sea level, but this kind of performance has been reported numerous places.

You sure they underrate them? They use that same 350 engine but usually Chevy likes to keep their Vette on top. It wouldn't surprise me that they downgrade the engine a little bit. Reason I say they aren't underrated is because of that Firehawk which they say produces 345 hp with a less restricted ram air and exhaust. Thats not exactly a Pontiac product, SLP is the one improving the Trans Am right?

Keepingthe Vette on top is the reason for underrating them. They run similar qutermile times, with vette trapping about 2-3 mph higher becuase of its better aerodynamics taking over above 100mph. There are many dealers such as Berger, Tom Henry, few others, including those who made the Intimidator SS that rate them at 380hp with just a cold air intake and cat-back exhaust. I don't know about you, but jumping from 310 to 380 with just an intake and exhaust seems abit high to me. GOing from 345 to about 380 seems like a major jump too but alot more reasonable. Besides its alot cheaper for GM to just rate one lower than to actually produce different parts for the same engine when the vehicle it's placed in is enough to make the difference.

I believe the only difference between a Corvette LS1 and a Z28/SS LS1 is the cam. I believe that is how GM downgrades the engine, by giving it a little less cam. It's true that they downgrade the Camaros, they can't have them approach their baby in the sportscar world.

SLP makes Firehawks out of Formulas and Trans Ams. To get the 345 hp rating, they just swap the lid and catback exhaust. To get the 335 rating, they swap just the catback exhaust. Some LS1's have been dynoed at 350-360 hp bone stock (not all of them mind you). Some just come from the factory a little stronger than others. It's still one of the best powerplants, regardless of how much it's underrated for insurance purposes.

lingenfelter, your enemy, Muscle Mustangs, and fast Fords magazine ran a camaro SS against its 2000 cobra and the SS ran 12.9 twice. Its possible with the right conditions

the '01 '02 Z28's and SS's actually have the same intake, cam, and clutch as the Z06. So they are actually a bit more pwerful than the '98-00 ls1's, and I remeber that MM&FF article, lol, that was great... if it was the one I am thinking of, the magazine's own writers were complaining about ford's in-ability to produce a better powerplant than GM.

In my opinion the CORVETTE is very overrated, the ZO6 is a very fine car. But the new vette's that aren't ZO6 and have nothing done to them are crap. Very inconsistent!

Originally posted by Z28Josh
In my opinion the CORVETTE is very overrated, the ZO6 is a very fine car. But the new vette's that aren't ZO6 and have nothing done to them are crap. Very inconsistent!

Well yeah, the fact that I have the same engine as base Corvettes and with $700 invested in mods can beat them, and for a little over half their price says, that they're nothing to be scared of. But they still remain Chevrolet's bread and butter because they're so popular with the older, more well off crowd.

The Corvette is not aimed at the same crowd as the F-body. The vette's performance advantage as far as straight line speed begins around 100mph which explains their slightly higher trap speed than the f cars. The real difference is in the handling, as the Vette is considered by many (including John Coletti, head of Ford's SVT) as America's only true sports car.

Originally posted by BlkCamaroSS


Well yeah, the fact that I have the same engine as base Corvettes and with $700 invested in mods can beat them, and for a little over half their price says, that they're nothing to be scared of. But they still remain Chevrolet's bread and butter because they're so popular with the older, more well off crowd.

I see exactly what your saying. But you would think it would cost us young,poor people a little more then $700 to get our cars to run right pass them.

what about the lta camaros what r the 1/4 times for them;)

lt1 sorry guys

Low 14's high 13's I believe, never owned one though...

Check my sig for my stock times. A 13.8 would'nt be out of the question though with that mph. I also run with no less than 3/4 tank of gas, don't air down my tires or remove my jack and spare.

Look at the numbers that my car did put down stock at only 400Miles. It did put down 292RWHP and 314RWTQ stock. That means i had 343HP and almost 370TQ. The only difference between the SS and the Z28 is the catback and its good for 10-15RWHP more. The C5 and the SS are getting the same numbers on the dyno and most of the times the SS are getting higher numbers than the SS due to its dependent rear which losses more power than the solid one. Anyways after adding a LID and a Catback i gained 33RWHP and 24RWTQ for a total of 325RWHP and 338RWTQ which means i have now 376HP and 397TQ with $400 in mods. I'm going to add the FLP headers and that should put me at 400HP and more than 400TQ. So with only 2K u can reach the Z06 number, but still cant beat it due to its light weight 3100 Vs 3400lbs.

Whether you think the Corvette is overrated or not doesn't mean a damn thing to GM. The whole world could write letters and they won't change the price. The Corvette is the wealthy man's muscle car of GM, on top of every car they produce and usually on top of whatever Ford can produce. Hell it's a dream car and if they lowered the price so young people and average working people could afford it, then there wouldn't be something to strive for would there? So whether its fast or not complaining about it being overrated is pointless.

Also if you are saying the Z28 and SS are no different then you're trying to tell me ram air makes no difference in performance, which is not true.

Hell, the price wont chance just because all of the Vettes competition is way more expensive.

Originally posted by DeViL

Also if you are saying the Z28 and SS are no different then you're trying to tell me ram air makes no difference in performance, which is not true.

I said the only difference between the SS and the Z28 is the catback ONLY. I know what i'm talking about and if you dont believe me you can go and ask on LS1.com or LS1tech.com and they will be happy to tell u the same thing again. The SS usually dyno's 10-15RWHP more due to the catback. That's why when a Z28 adds a catback they see up to 15-20RWHP while on the other hand the SS sometimes gets an increase between 1 to 8RWHP and sometime none. U get my point!!! The RamAir thing doesnt help at all in the case of the Camaro because of the stupid design, did u ever looked at the design from the inside, didnt think so. It would help a little bit in the case of the T/A because the design allows the air to get throught the LID. One more thing, next time when you want to say your opinion on something u think u know. Do go around telling people what they are saying is not true unless u know it for sure, which in this case you dont. Thank you.

Originally posted by Lingenfelter
You not completly right first the SS with a 6-speed has never done high twelves stock. They do low 13s from factorI dont car if the best driver drives it. But i have to agree GM did underrate them i believe that they would have more horsepower all though they did mess up on the 00 model with the piston rings.


GM underated the F-body alot, LS1's are rated at 305-310 fly wheel HP in the F-body, but will make 295-315 RWHP. There is no real performance gain to be had in the SS or Firehawk over the Z28 and TA. Except if you get one of the suspension ungrades, then you will handle better. Ever heard of LS1.com or camaroz28.com ? Go ask about 12sec. factory cars. Not all M6 cars hit 12's, but there are the factory freaks that have hit 12's stock. GM High Tech Performance got a 2000 M6 Z28 to go 12.8, and a 2002 SS A4 convertible to go 13.5. 98-99 LS1's make right around 290-300hp at the wheels, with M6 getting 5hp-10hp more than the A4, but, they have dynoed more to the wheels. 00-02 LS1 cars are a little stronger due to the LS6 intake manifold, new cam profile, silghtly revised headers. 00-02 Ls1 will get about 310-315 to the wheels. I have personally seen a 02, M6 Z28 dyno 323hp to the wheels STOCK.

It's the 98-99 LS1's that people have reported to have an oiling problem. One of the years has a cylinder head recall if your car was built within a certain period. And I don't know what GM did about the people complaing of excessive piston slap, even after the car has warmed up.

There is no difference between the Vette LS1 and the F-body LS1. Vettes have IRS which caused a little more HP loss to the wheels, so Vettes dyno about the same RWHP as an F-body. In the 1/4 Vettes are faster the because they are lighter and are more aerodynamic. M6 Vettes go low 13's to mid 12's, with high 12's being the norm. A4 Vettes run mid 13's to high 12's with low-low 13's being the norm.

Originally posted by DeViL
Also if you are saying the Z28 and SS are no different then you're trying to tell me ram air makes no difference in performance, which is not true.


The RamAir setups on F-bodys SUCKS. Look at the route the incoming air has to travel befor it reaches the air box is the LS1 SS's and LT1 SS's. The WS6 and Firehawk setups are a little better, but the VERY small gains to be had are not going to win you a race. The RamAir setup only starts to acually "Ram" air into the air box at speed greater than 100mph. And again, the gains are very small.

Originally posted by Black_97'Z



The RamAir setups on F-bodys SUCKS. Look at the route the incoming air has to travel befor it reaches the air box is the LS1 SS's and LT1 SS's. The WS6 and Firehawk setups are a little better, but the VERY small gains to be had are not going to win you a race. The RamAir setup only starts to acually "Ram" air into the air box at speed greater than 100mph. And again, the gains are very small.

Gotta love the style of the SS hoods though. I prefer the style of the 96-97's more (more angular and hot rod-like), but they're both improvements over the stock hoods.

Originally posted by BlkCamaroSS


Gotta love the style of the SS hoods though. I prefer the style of the 96-97's more (more angular and hot rod-like), but they're both improvements over the stock hoods.

True the SS hood looks awsome, I just wish it was more functional than the current setup. O'well at least it's not like the Mustang's with fake scoops everywhere. :p

Would shut the fuck up I wasn't even referring to you I was talking to LT1-Z

Originally posted by Black_97'Z


True the SS hood looks awsome, I just wish it was more functional than the current setup. O'well at least it's not like the Mustang's with fake scoops everywhere. :p

Yeah, I wish it did do more than just adding functionality above 100, but what can ya do...