'03 Cobra gets rocked

[Z-71]

The driver of the Z-28, was David McCall. His car does have the usual bolt-ons, I believe gears, full exhaust etc. Which, if anyone knows will put a stock ls1 car LOW 12's easily. Several LS1's have seen 11's with just these "bolt-ons". For instance, Alan Roskos a.k.a. (RAGEman) he's gone 11.56@121mph in a stock internal 6-speed '01 z-28 on motor. McCall's car has gone LOW 11's, if I remember correctly. For some reason,t hese cars are extremely fast with a little bit of work.

Anyways, take my words however you wish. Just some people seemed to doubt the ls1's ability to pull a car with supposed more horsepower like that, and asid that the cobra must not have been trying. Or, it was strictly driver error, or whatever. LS1's got top-end on dubs, they are hard cars to beat on the highway.


Jason

[MadZ]

I actually think he is trying on the first run, if you watch the video again, you will notice that he hangs right there for a second and then slowly falls back. If he wasn't trying then he would have fallen back much faster than he did. and yes, many people do not realize the power and potential of ls1's. I've seen a few stock '02 anniversary SS's hit 12.9's before. BONE STOCK GM has been known to have very moddest hp ratings, especially when the ls1 camaro's come close to the performance of GM's beloved vette. Wouldn't want that stock Z28 going faster than that yuppie's stock vette now would we?

[DeViL]

The first clip just looked like the Camaro guy was just passing by him that Cobra wasn't hitting it very hard if at all. Anyways the hell with this anyone got some kill stories of their own?

[-cy-]

Originally posted by Cbass
100hp extra in a Z28 shouldn't make THAT much difference...

wow man, since when does 100hp more and about 200lbs less not make much of a difference?!? The 200 lb difference is fairly large, and then add a shot of spray for 100hp more...thats a big difference. I haven't watched the video, too lazy.


The only thing bothering me is that the cobra is only making a little under 400hp with the blower, with a different pulley ratio it might be a bit better. A guy around here has a blown z-28 (LS1) with stock internals and puts 498hp to the rear wheels.

Ya the '03 cobra is a darn nice car, but its not worth worshipping, stock at least, and neither is the LS1. As soon as you say "well, if he had this, then it would be different" then the entire arguement becomes pointless. Well, what if a civic rolled up to them with 700hp and slicks and beat them....could have happend, but didn't, deal with it.

[Cbass]

The first time he blew the Cobra's doors off like it wasn't no thang

The second time it was more of a run. Anyways, the 390hp Cobra is stock, with a factory blower set up for emissions and insurance costs. It has all sorts of internal goodies that the LS1 does not have. Also, keep in mind, the DOHC Cobra motor is a beast on the highway, because of it's high revving yet flexible design.

Obviously the Z had more power on him, to pull away like that. It didn't really look like the Cobra made a good run the first time. There's a guy in my town making 500hp on his LT1, with a 150 hp shot on top of that... he's pretty fast.

[-cy-]

True, but the LS1 is set up for emissions and insurance reasons as well. They both have the weak and strong points, wanna start modding them to get rid of the weak points, well then the arguement is over, neither can truly win the contest.

Its more about what floats your boat. For me, i like the pushrod design as opposed to the DOHC design, but thats mostly because i have learned more about bowtie stuff than ford. If i get the chance, i'd love to rip into a ford engine and learn more.


Lets put it this way, both cars are fast, either can win because of conditions and variances, so lets all just say "nice cars, nice race". Magazine racing accomplishes nothing, and saying "well, with this he could have..." makes it even more pointless. Nice cars

[Cbass]

Damn skippy! I respect Ford for taking up where GM left off with the LT5, building a quad cam 4 valve per cylinder V8. I'm so sick of hearing how old fashioned pushrod engines are all that the US has ever made! Yeah, I know the LT5 was designed by Lotus, but that's because it was destined to be a very limited run of cars...

OHC does really have all the advantages, from higher rpm capabilities, to better valvetrain efficiency, and easier cam work, but the big 3 never invested much in putting it into V8s.

It's like I try to explain to ricers. Yes technology is good, and can overcome lack of displacement up to a point, but technology and displacement is an unbeatable combination. Think of a 6 liter rotary, or a DOHC big block with twin sequential turbos per bank.

BTW, there is a company I was looking at that makes DOHC conversions for domestic smallblocks! Only one problem, they want $4-6K for a set of heads. The good news? They're good for something like 10,000 rpm, and have sick flow numbers

[-cy-]

Just because you can spin up to 10,000 does mean you'll want to. With the cams i've been looking at for power, they redline (lose power) after 7000 or so, so people in the LS1 just up the limiter and be happy.

The only thing i think is better about the pushrod idea is that there is kinda a weak link in there, something that will bend before Mr. Valve starts to meet Mr. Piston. With the DOHC, the cam is right on top of the valve, and it seems a bit easier (more harmful when it does too) for the bad piston to valve combination happens.


Its all preferance. Oh, and the LS1 maybe be of pushrod design, but it isn't exactly without good design or technology.