Street Racing & Kill Stories Basic Technical Questions & Advice

'96 Cobra vs. '99 z/28???

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Old 12-04-2005, 02:38 AM
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Originally Posted by Bitemark46
See sig. Oh and I don't have any probs with this "3rd gear phenomenon". -Mark

Look at your e.t. vs. trap. This is exactly why an LS1 running your exact e.t. would start pulling hard in 3rd and trap much higher for the same 12.00 e.t. You might pull a 12 second LS1 off the line, but by 3rd/4th gear(end of 1/4) he would be starting to pull past you as indicated by a 118-120mph trap. You too would have problems with the 3rd gear "phenomenon."
Old 12-04-2005, 11:57 AM
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Originally Posted by Bitemark46
See sig. Oh and I don't have any probs with this "3rd gear phenomenon". -Mark
Great, we're talking bone stock from the air filter to the tires. A strong LS1 to a strong 4V (96-98), your getting yanked in 3rd gear. Sorry bro.
Old 12-04-2005, 01:55 PM
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ya this is funny.... those stang guys never give up , it's pretty sad
Old 12-04-2005, 04:31 PM
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Well i even notice the 3rd gear thing in my lt1. Its like mustangs hang in the race for 1st and 2nd gear, then once i snap third, its like the stang quit trying.
Old 12-04-2005, 05:28 PM
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WTF? I noticed that all the 3rd gear rapeage is on mustangs.....ever consider it might be when the stangs loose power. I dont know, but I can see some of you guys are underestimating the power of cobras.

Couple issues of carcraft ago, I saw an SN95 Cobra 4v running low 10's on motor. It was a 331ci 4v cobra motor, i was damn shocked and it wasnt even running boost. If I were you guys I would watch out for boosted cobras because I have seen some mean *** ones take some money from a couple locals at the street race hangout. Those 4v motors for being so small make insane power with boost.
Old 12-04-2005, 05:56 PM
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Was the Cobra you saw running low 10's red, with a navigator 331ci? If so it was probably Al Papitto and it's one of the quickest n/a modulars on the planet. Not something you're going to encounter much, if at all.

Yes, most cars can be fast with with boost.....
Old 12-04-2005, 06:34 PM
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Originally Posted by Big Jimbo
WTF? I noticed that all the 3rd gear rapeage is on mustangs.....ever consider it might be when the stangs loose power. I dont know, but I can see some of you guys are underestimating the power of cobras.
Nobody is underestimating them. They're not as fast as an LS1 stock vs. stock, period. Mod any car and all bets are off.
Old 12-04-2005, 06:36 PM
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Originally Posted by Big Jimbo
WTF? I noticed that all the 3rd gear rapeage is on mustangs.....ever consider it might be when the stangs loose power. I dont know, but I can see some of you guys are underestimating the power of cobras.

Couple issues of carcraft ago, I saw an SN95 Cobra 4v running low 10's on motor. It was a 331ci 4v cobra motor, i was damn shocked and it wasnt even running boost. If I were you guys I would watch out for boosted cobras because I have seen some mean *** ones take some money from a couple locals at the street race hangout. Those 4v motors for being so small make insane power with boost.
Duh, thanks for stating the obvious. Any car can be made fast.....Go ahead and drive a few mustangs, and drive your LS1 and tell me there isn't something to be said about 3rd gear. Stock for stock, or mod for mod, the LS1 will start to yank in 3rd gear. This is something that tons of people have noticed. Most of the mustangs guys here in town, and being a previous owner myself, will admit that you better watch out when the LS1 hits 3rd. No where did I say that the LS1 is the fastest car in the world, or a mustang can't be made to kill an LS1. The fact is, that the bigger displacement engine has much more pull in 3rd gear, on up, than a 4.6l or 5.0l motor. This is why I traded my fully moded GT in for a T/A.
Old 12-04-2005, 06:51 PM
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I raced a 97 cobra from a 45-120mph roll, all i had at the time was an intake, and he was stock. by the time we hit 120 i had about a car and a half on him. we raced again with my current mods from 50-110 and i had about 3 cars on him this time. idk much about the big v8's but from ur sig, it looks like u have the mods that should easily give u the win.
Old 12-05-2005, 12:43 PM
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Originally Posted by Redneck Z
Look at your e.t. vs. trap. This is exactly why an LS1 running your exact e.t. would start pulling hard in 3rd and trap much higher for the same 12.00 e.t. You might pull a 12 second LS1 off the line, but by 3rd/4th gear(end of 1/4) he would be starting to pull past you as indicated by a 118-120mph trap. You too would have problems with the 3rd gear "phenomenon."
I agree stock for stock. But the orginal poster said he assumes the cobra is stock. So it's not a definate at that point. I'm sure a 12.0 LS1 would start to pull past me at the end of the 1/4. But I don't race anything past 1320 feet. So my race is over. -Mark
Old 12-05-2005, 01:29 PM
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About the whole gear + power adder issue on a '96-98 Cobra...my buddy has a '96 with SLP ORX/Loudmouth, an intake, 4.10 gears, and the smallest Kenne Bell (1.8?) running 6 psi...soon to be pullied. He dynoe'd about 355rwhp with a dyno tune and all the listed mods. I never got to straight up race him from a dig, but I cruised with him a few times and had a chance to kind of get into it. I have full intake/full exhaust/3800 stall/3.73's in my car, and maybe 100 lbs. of weight reduction. I don't put down as much as his car, that's for sure, but he hammered it, I did the same maybe a split second later, and I was slowly starting to pull on him. From 40 to like 80mph, I had gained maybe a fender on him. His car is fast, but FI doesn't do as much as I would hope for that year of 4V.
Old 12-05-2005, 02:07 PM
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Originally Posted by Bitemark46
I agree stock for stock. But the orginal poster said he assumes the cobra is stock. So it's not a definate at that point. I'm sure a 12.0 LS1 would start to pull past me at the end of the 1/4. But I don't race anything past 1320 feet. So my race is over. -Mark
Well..........thats exactly what we were talking about.............the 3rd gear "phenomenon."
Old 12-05-2005, 02:11 PM
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Originally Posted by 8banger
About the whole gear + power adder issue on a '96-98 Cobra...my buddy has a '96 with SLP ORX/Loudmouth, an intake, 4.10 gears, and the smallest Kenne Bell (1.8?) running 6 psi...soon to be pullied. He dynoe'd about 355rwhp with a dyno tune and all the listed mods. I never got to straight up race him from a dig, but I cruised with him a few times and had a chance to kind of get into it. I have full intake/full exhaust/3800 stall/3.73's in my car, and maybe 100 lbs. of weight reduction. I don't put down as much as his car, that's for sure, but he hammered it, I did the same maybe a split second later, and I was slowly starting to pull on him. From 40 to like 80mph, I had gained maybe a fender on him. His car is fast, but FI doesn't do as much as I would hope for that year of 4V.
My 97 had a 9lb vortech, 4:10's and full exhaust. Everything else was stock. With 18" Chrome Saleen wheels on the front and 28" ET Streets out back it went 11.7@122/1.77 60ft. Surely if I had some skinnies out front and some minor suspension mods and was willing to drive the car harder it would have went 11.30's. I never dyno'd the car (none in my area) but the guy I sold it to said it put down 455/385 at the wheels. These cars do have a lot of potential as stated previously and blower kits as well as the cars themselves are relatively cheap. They are something to watch out for when modded.
Old 12-05-2005, 02:17 PM
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Originally Posted by 02ZOh6
My 97 had a 9lb vortech, 4:10's and full exhaust. Everything else was stock. With 18" Chrome Saleen wheels on the front and 28" ET Streets out back it went 11.7@122/1.77 60ft. Surely if I had some skinnies out front and some minor suspension mods and was willing to drive the car harder it would have went 11.30's. I never dyno'd the car (none in my area) but the guy I sold it to said it put down 455/385 at the wheels. These cars do have a lot of potential as stated previously and blower kits as well as the cars themselves are relatively cheap. They are something to watch out for when modded.
I had a 97 also....you must have had more done to it than just a 9lb vortech and full exhaust. A 97 w/ those mods and the pathetic wheezer heads won't do 455rwhp. Thats a gain of almost 275 rwhp! Did you have PI heads/cams, other mods??
Old 12-05-2005, 02:41 PM
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A roots blower is probably the worst type of blower to put on a 96-98 cobra. The heads flow like crazy but lack velocity. If he had put a centri blower on it with 8psi and everything else stock 400rwhp is easily achievable. 130-150rwhp is about the norm when bolting on a centri blower for the 96-98's.

RedneckZ- I'm talking about dig racing not roll racing. Once the ls1 gets into 3rd it may start to make up ground but it's too late. I leave the rolls for the fat chicks.
-Mark
Old 12-05-2005, 03:20 PM
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That's cool that you enjoy racing from a dig! I don't car what kind of racing you do, it doesn't change the fact that the LS1 has a great 3rd gear. No offense, but were talking about the LS1's 3rd gear, not what kind of racing you like to do.
Old 12-05-2005, 03:41 PM
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Originally Posted by Redneck Z
I had a 97 also....you must have had more done to it than just a 9lb vortech and full exhaust. A 97 w/ those mods and the pathetic wheezer heads won't do 455rwhp. Thats a gain of almost 275 rwhp! Did you have PI heads/cams, other mods??
Listen, I owned the car since it was new and I know what I did to it. Why the hell would I care or try to 'play up' the Cobra, the thing's been gone for 3 yrs. Take a look at the trap speed guy, 122 in a 3600 pound car w/driver and your going to get ball park #'s around 450. As I stated, I did not dyno the car, the new owner did. I could really care less about dyno numbers anyway, track numbers is where it's at.
Old 12-05-2005, 04:16 PM
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Originally Posted by 02ZOh6
Listen, I owned the car since it was new and I know what I did to it. Why the hell would I care or try to 'play up' the Cobra, the thing's been gone for 3 yrs. Take a look at the trap speed guy, 122 in a 3600 pound car w/driver and your going to get ball park #'s around 450. As I stated, I did not dyno the car, the new owner did. I could really care less about dyno numbers anyway, track numbers is where it's at.
Amen. I leave the dyno racing to the supras. My wifes A4 feels perdy good in 3rd but has a detonation issue that I need to address. -Mark
Old 12-05-2005, 04:16 PM
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Listen here....my bad, I thought it was a 2 valve, so I'm sure you can understand how hard 455 rwhp would have been to swallow. A 205 rwhp gain on a 4 valve is very stout, however not completely impossible, like a 275 rwhp gain on a non-pi 2 valve would have been.
Old 12-05-2005, 09:35 PM
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Originally Posted by Redneck Z
Listen here....my bad, I thought it was a 2 valve, so I'm sure you can understand how hard 455 rwhp would have been to swallow. A 205 rwhp gain on a 4 valve is very stout, however not completely impossible, like a 275 rwhp gain on a non-pi 2 valve would have been.
Sorry dude, just pisses me off when people say 'that's impossible' or 'your lying'. 2V 96-98 cars are slugs, I can see where that may seem impossible without some motor work. We're on the same 'team' again anyway, it's all good.



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