Street Racing & Kill Stories Basic Technical Questions & Advice

First loss with my new mods.

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Old 03-18-2006 | 11:35 AM
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Thanks guys! Yeah, it was definitally in good fun. No crap talking or anything, we each complimented each other's cars and I bet he'd be up for a rematch from a dig. I have no problem losing to a badass car like that! It definitally gives me incentive to continue modding. I've seen some of those power curves and I'd say that his is most definitally pancake flat compared to mine.

Question for all the Cobra guys, what will a 530 rwhp Cobra trap in the 1/4?
Old 03-18-2006 | 11:49 AM
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Originally Posted by ScreaminRedZ

Question for all the Cobra guys, what will a 530 rwhp Cobra trap in the 1/4?
It's completely dependent upon traction and the driver.
Anywhere from high 10's to high 12's...seriously. I went 11.29 @ 123mph
with 460rwhp. 600rwhp puts a Cobra right around 130mph traps...just
for reference.
Old 03-18-2006 | 12:08 PM
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Originally Posted by ScreaminRedZ
Question for all the Cobra guys, what will a 530 rwhp Cobra trap in the 1/4?
Depends.

A 530rwhp Eaton car is going to make around low-500rwtq and will pull 125+mph with decent driving in decent air.

A 530rwhp KB/Whipple car is going to be a very lightly modded, low-boost setup that'll make less torque and trap a few mph lower...probably in the 122-125 mph range.

Once you start spinning the twin-screw cars up to 17+psi, they start putting out substantially more rwhp and more torque than an Eaton car.
S.
Old 03-18-2006 | 02:39 PM
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I had no idea the stock blower was capable of that much more flow than the stock settings. Dayum. I was under the impression the blower ran out of steam a bit before that and thats why so many people went KB.

That Z must be dialed in pretty freakin well.
Old 03-18-2006 | 03:26 PM
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Originally Posted by Snorman
Like 9-10psi.
Some cars make more, some a bit less.
But you're right, 17psi is pushing a ported, stock Eaton pretty hard. You can spin them higher, but at that point, I'd be considering a Whipple/KB swap.
S.
not trying to poke a fellow cobra owner in the eye but, it's 8.5# of boost stock.
Old 03-18-2006 | 03:51 PM
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Maybe that's what Ford spec'd, but that's not necessarily what we'll see.
I've heard of some making 10psi...mine did in colder air.
Depends on weather conditions and that particular car.
Turbo Buicks and TTA's are the same way.
S.
Old 03-18-2006 | 05:01 PM
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Yeah, I was thinking around 125ish. I think I'll be trapping in the 117-119mph range depending on the weather, so that would be about right for how hard he pulled me.

I definitally can't wait to get my car to the track! I just hope I don't explode my 10-bolt, lol.
Old 03-18-2006 | 05:15 PM
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I definitally can't wait to get my car to the track! I just hope I don't explode my 10-bolt, lol.[/QUOTE]


When I had my 99 SS, I was scared of the same thing at 430rwhp. I get a Cobra......Damn, now Im worried about tha axles!
Old 03-18-2006 | 05:39 PM
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congrats
Old 03-18-2006 | 06:04 PM
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With DRs you might want to have some money set aside for that Rear end project. I am in a different/worse boat with my DSM, and I am already budgeting money for a trans rebuild when I put in my 2.4. Getting caught out with no money at the start of a season would suck.

Then too, some peoples driving style allows them to get away with that stuff, while other will just instantly start sheding driveline parts. Maybe just get good ETs and awesome traps with the new setup, and save the clutch frying and powershifting for a bit later
Old 03-18-2006 | 06:10 PM
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Yeah, I'm hoping I can baby it off the line and not power shift 1-2 and maybe it'll last for the year. I'd like to put a 12-bolt in it next winter, but if it does break, I have some money to fix it.
Old 03-18-2006 | 06:14 PM
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Driving that way I bet your OK. Maybe put some nice Redline gear oil in the rear diff. Helps us DSMers a lot. I use MTL-90. The stuff is like a hybrid between oil and bubble gum. It rocks.

Besides, it'll be fun to look at the traps and know just how mean the ET really is
Old 03-20-2006 | 01:06 PM
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Originally Posted by Stanger88
I dont get it, i know you are lighter, but you were WAY underpowered compared to him, what is up with LS1's hanging with MUCH more powerful other cars from a roll? not calling anyone out, im just curious about it, seems to be a common thing
Hey man......are you sure that he's lighter than the SVT? The general rule of thumb from 1985 to current day is....the Stangs, Fox Body's and the newer one were always a competitor to us F-Body guys because the Pony Cars were always lighter....that's the power to weight ratio diffrence.

Guys....am I right or wrong? I seriously need correction if I'm wrong.....so you pro's enlighten me.
Old 03-20-2006 | 01:27 PM
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the 03/04 Cobra weighs 3665# (vert is about 100# heavier) (NADA as reference) so yeah, i think he had the weight advantage.
Old 03-20-2006 | 01:29 PM
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Originally Posted by unit213
It's completely dependent upon traction and the driver.
Anywhere from high 10's to high 12's...seriously. I went 11.29 @ 123mph
with 460rwhp. 600rwhp puts a Cobra right around 130mph traps...just
for reference.
and 700rwhp? How about 800rwhp? You said you was working on that?

Damn, I should of bought a cobra.
Old 03-20-2006 | 03:11 PM
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nice death screaminredz, i know what a kb 03/04 cobra would do first hand, back when i had my mach1 with only 295rwhp i raced my neighbor recently tuned 03 kb cobra (600rwhp), it was nasty, i lost by about 5 cars, from 2nd to 3rd gear
have you thought of going with a 100 shot on top of what you have now ??
what are the specs of your cam???

i'm still debating to go with the hpe c cam 236/238 .608/.612 112LSA, or with the hpe s cam 238/242 .608/612 115 LSA, plus i'd be adding kooks 1 7/8 LT headers and fast 90 intake, after that a small 100 shot to complete the combo.
Old 03-20-2006 | 03:32 PM
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Originally Posted by ScreaminRedZ
My brother and I were cruising around looking for a race and not having any luck. We decided to make one more pass when we found a white 03/04 Cobra sitting in Wendy's parking lot. After asking the people there who's it was, nobody seemed to know. We were going to give up and were about to leave when another car pulled up and the driver of the Cobra got out. He came over and asked if I wanted to make a friendly run just for fun. I said definitally and we agreed to start from a 60mph roll (neither of us wanted to go from a stop in this cold weather). I had my brother and he had his friend with him, so we were even on passengers.

We went out to the spot and I honked three times. We were only going about 45mph. On the second honk he took off and I tried to go right after, but I went sideways and then missed a gear, lol. He saw that he went way too early (later admitted that it was his mistake) and he slowed down. We got off the highway and turned around getting back on the other way. We got next to each other going 60mph and I honked three times. I had it in second gear, so I was definitally in the meat of my power band. On the third honk we both hit it and I hung for a second and then he started pulling away. He wasn't destroying me, but was pulling away decently. We took it up to about 130 mph (for me, slightly faster for him since he was pulling) and at the end of the race he had about 3.5-4 cars on me.

We pulled into a gas station and I told him that his car was fast as hell. He was in total shock that I kept up as well as I did. He kept saying that I my car was freakin fast and kept comlimenting it. It turns out that he has about every bolt-on you can get and a ported stock blower. He said he dynoed 527 rwhp with 15 lbs of boost and that he was making 17psi when he raced me I was definitally not out to lose a race, but after hearing how much power his car had, I was definitally happy with my performance. He said that he pulled 4 cars at the very most, maybe less. The guy was very cool, and I'd definitally like to hang out with him again. I think when it warms up, I'll see if he wants to run again from a dig. You never know, I could get lucky, although he did say that they have a solid rear ready to go in, so i'll probably still get waxed. Either way, it'd definitally be fun.

Overall, a great night of racing and hanging out with cool, people!
No shame in being N/A and losin to a S/C car at all
Old 03-20-2006 | 05:02 PM
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Thanks guys!

My car weighs about 200 lbs less than an 03/04 Cobra so I definitally had the advantage there (as little as it may be against that kind of power, lol).

BlueGoat06, my cam specs are 230/236 .551/.551 112 lsa. Smallish cam for the power it made, but I'm not complaining I'm not a big fan of nitrous personally, but would never say anything bad about someone else using it. It's proven it's worth time and time again. I'm pretty much going to build the rest of my car to handle big power, but I'm not sure yet how I'm going to get that big power, lol.
Old 03-20-2006 | 05:34 PM
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Im no expert on cam profiles, but looking at that moderate LSA and half inch lift, I think that cam would do well for FI. I think there is actually a thread about this very thing in FI right now. Those guys would know for sure, but I suspect yu have a good platform for some boost. Usually a milder cam is better than a phsycho cam in a boosted application in terms of even power delivery.
Old 03-20-2006 | 10:24 PM
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cobras r just dyno queens they dyno a lot n run slow times at the track. my friend has a 04 cobra with a 2.8 pulley n some bolt-ons n dynod 408 rwhp, his best et was a 12.4 at 115 with drs. my other friend with a stock 98 z28 on a 150 shot dynod 416 rwhp n his best et on slicks is a 11.6 at 115.



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