600 hp 700 ft. lbs of torque
 

any body else have one? any tips on keeping it in a straight line or am i dreaming? :eek:

Another useless Cobra is born.

If you start in a straight line, it'll probably stay in a straight line, with both rears on fire...depending on how you drive it.

I can't get mine past 1/3rd throttle without wheel spin...even starting in 4th on the freeway. It makes a little less than yours; per bank. :)

Lol
 

...says the guy that built a pickup truck that can beat most of the Cobras on this board in a straight line, and owns a crown vic with a Mr. Fusion sticking out of the hood. :LOL:

Don't tell me you've grown out of the realm of extreme overkill; I refuse to believe it!

I have a little more HP, the car handles very well. A car with a cheeeeeep chassic with a VW motor can get out of hand

Hehe, guilty as charged ;) . Yes, I like wretched excess :D. But in a Cobra, that kind of motor ruins what the car is capable of, to me at least. I've driven customers 600hp Cobras, and there's not much you can do with the car full throttle. You can lay off the gas, but then what's the point of having all that hp? I will take my 425hp Cobra over them any day.

Unfortunately correct...
 

You're right, of course. I drive mine at under 1/4 throttle and can still hit 0-120 in 11 seconds granny shifting under 5500rpm and quarter throttle and and have all kinds of logs to prove it. To be quite honest, the novelty of limitless power has given way to the fear of mortality. I've already gotten into accidental oversteer from lack of throttle control. The car begs for the road, but the only portions I can safely enjoy are the straights. It's far too notchy (and scary) to risk throttle in the corners. My throttle resolution sucks; even after having given it a lot more travel than normal, and even with the Lightning throttle body progressive lobe. I'm about done with my break-in miles, will get my dyno number, and will trade the 30-tooth for the 40-tooth cog this winter. That should tame it down a bunch. If not, guess what...a 50 can be had. I want to be able to enjoy the car on a road race track; and this combo ain't it!

Hey littleron,

Don't listen to these girls. If the car is designed correctly, it will hook up. The car needs to be designed with staright-line Hp in mind. I've ridden in 350 Hp. Cobras that spin the tires in third and I've ridden/driven 700 Hp. Cobras that are stuck like glue. If anybody is interested in how to get 700+ Hp to the ground give me a shout (my ears aren't that good any more):3DSMILE: .

Brian

Straight line only?
 

If I was only interested in a straight line, connecting the power wouldn't be that difficult. I'd just throw a pair of MT3076S's 15" wide slicks on the back on 15" rims, ditch my 13" rear brakes, and it not only would hook, but would stand on the rear bumper. I really have no desire to see the sky either...not my thing.

Thumbs up to Brian

I'm only at about 475 HP and 460 torque at the wheels. 0 - 120 mph would be in the mid to high 8 second range on drag radials on a normal road depending on the DA. I could see a little more power going to the ground on drag radials if you rolled it on smooth.

Gotta have drag radials.

Good setup of the wheel alignment
 

littleronracing. Good suspension with shocks and springs will help your problem. A wheel alignment is most important for this kind of power. Having the car with you in it and having all 4 corners weighted is key to going in a straight line. If traction is still a problem, add 100 lbs. to the back of the car at the lowest possible location. The added weight will help with traction and the car may accelerate faster with more grip to the road. You could also advance the cam to kill some of the tork and give you more HP. Rick Lake

It's easy if that's all you want to do.

http://www.racingjunk.com/post/96369...r-amp-Tra.html

Bring the car to Road America or Run n Gun and the times will tell you if your car works.....

The track is the only place to see how your car works regardless of the HP...... Although you better have 700 hp to compete.....

Morris

I am still sorting out my car and my abilities with it. The one thing that I do like with the turbo is the power on tap if you lite it up but otherwise its pretty docile. I also vary the boost and have three tunes for 7 lbs, 15 lbs and 25 lbs. The twenty five lb. boosted car is really no fun with the standard Yoko 295's on the rear. I forgot to add 596 rwhp and 644 tq on a Mustang Dyno with 7lbs of boost 4th gear 5500rpm 74f and 62% humidity. We were using cp 116 fuel.

I guess the way I look at this is 600 HP to much HP to floor it in first gear? Yes.

But then the throttle is not an off/on switch. Learn to control the throttle so you get the most out of the car. Then 600HP will not be to much.

Is 600 hp too much? - yup.

Is 600 hp too much? - nope.

Are you experienced Cobra drivers (and I use that term loosely) really going to tell a guy who's not there yet that this is a practical idea?

Can you keep it straight? - sure, no sweat at all. Will you have wheelspin issues? - do you really have any doubt about this? Can you put it all to the ground, all at once? - probably, with the right setup. Then again, probably not with what you will likely wind up with.

Do yourself a favor. Think about this. Have you ever been behind 600 hp before? - got any idea what it really is like? Put it into a 40+-year-old design and what do you THINK is going to be the result?

IF you're prudent, and want to stay alive, you'll be good with it for a while. Get careless or smug about it and you will die the first time you apply a bit too much pressure to the gas pedal as you arc around that onramp corner. Forgiveness is not an element of a Cobra. There is zero crash protection. Tires will take only so much stress before they cannot hold on. And since you're much more likely to be driving this thing on the street than on any racetrack, where you have at least a chance of not running into anything immobile like curbs or abutments or poles, your chances of surviving that first f*ckup intact are amazingly slight.

Start with a 350 or 400 hp motor and see how much you really have to learn. Once you've honestly comfortable with that, then 600 hp will be OK for you - and you will survive it since you will understand just how easy it is to get in over your head.

Sal said all this in 5 words.

excellent post turnpike! you just helped me decide what size engine i "need" to have. thank you. perfect timing, i'm about to pull the trigger on a 425 hp engine.

New goal...
 

My new power goal will be whatever the traction limit in 4th is on the best rubber I can find.

On the 335 series R1's on the car now, the tires go up at about 630rwhp/680ft-lbs according to the logger. I'm basing this on mass-air meter readings, as well as good old physics...I know the weight, and speed vs time, the car has the equivalent of a flight recorder on board that stores everything.

My car is a 96" wheel base car with a non-parallel 4-link, and is within 20lbs on all 4 corners with me sitting in the drivers seat. It's also on the heavy side, about 3000lbs with driver and a full tank of fuel. If you weigh less, and have less tire, you'll likely break traction sooner. I have my throttle stop set at the traction limit currently, and aside for not having much throttle travel to work with, the car is a lot more fun with its balls shrunken.

I'm not going to get much more tire on here. If the traction doesn't improve, the new goal will be right around 600. I want a car I can control on corner exit in 3rd, and WOT on the straights at speed without having to work so hard and/or roll the dice so often. When I go to the straight track, sure...that's a new game with different tires.

So, at the run & gun, would they let a car like mine run in the 10's or better with my single 3" bar? If not, there's no way I'd make the haul out there to compete. I'd rather just get kicked off the local drag tracks, have my fun on the road race course, and and call it a day. I already got a rejection from Hot Rods Pump Gas Drags. "We'd love to see a Cobra out here, but you need an NHRA legal cage in the car." I'm not doing that, I don't care enough.

Byron

My engine is 425hp, and it puts about 310 to the wheels. That may not sound like much, but there isn't much that's pulled away from me on the street either. I can mash the throttle to the floor, and my car just goes, no wheel spin. I can go full throttle through a tight turn, and the car just hooks, it doesn't overpower the rear. It's just really nice to drive at this level.