Siphon

iTrader: (7)

Would the LE2 package give me enough power to hang with stock/mildy modded 03-04 Cobras? What about the LE1 cam/ LE2 heads?

Anyone know what stock 03-04 Cobra run in the 1/4? What kind of HP they putting out?

Got a couple of ******** in town that have Cobras. . .just wondering if I should give them a run sometime soon.

regorih383

iTrader: (21)

YOu might need to go with the LE3 stuff, for those pesky cobras..
Remember slightly modified cobras put well over 400rwhp.

METALBEAST

iTrader: (1)

With an LE1 you can hang with a stockish Cobra. They run low 13s/high 12s with a typical driver. With an LE3 you should beat the snot out of stock Cobras. They put down 350-385 RWHP stock but weigh alot.

TwoFast4Lv

iTrader: (8)

All good advise!

jehovasfitness

I didn't think there was an '04 Cobra? Just the SC '03s and '99's for those body styles. Could be wrong though

HellTeeOne

Yea those Cobras can make a lot of power. However, they are heavy. An f-body that makes anything over 350 or so rwhp can hang with stock ones pretty well. If an LE3 car will make 410ish rwhp, I would stipulate that a Cobra would need to make 40 to 60 more rwhp to really even the field. But this usually isnt a problem for these newer Cobras.

Siphon

iTrader: (7)

I really didn't want to go with the LE3. . .because of streetability. Guess I might have to start forging my bottom end if I want to dominate.

Thanks for everyone's imput.

warbird27

iTrader: (1)

talk to lloyd, i emailed him with my goals and im gonna go with the le3 with an le2 cam and he said it will still be streetable. i told him i daily drive it from may to october and he said it would be fine.

RealQuick

iTrader: (14)

A properly tuned LE2 setup will lay waste to a stock cobra plain and simple. My 2 year old LE heads with an XE230/236 114LSA cam (far from matched to the heads) put down 368rwhp/336rwtq with LESS than 10:1 A/F! It took two full turns of the regulator just to get it to come back up over 10. Once I leaned it out to 12.4-12.6 the output jumped to 383rwhp/353rwtq. Unfortunately it was just used on the dyno to see what numbers I could have achieved if it were leaned out thru the pcm.

I went to the track in 368rwhp/336rwtq trim. I ran 12.5 @ 114 w/2.07 coming out at idle. The same day a pullied cobra beat me (12.3 @ 116mph). If I had been properly dyno tuned with the higher hp i could have easily trapped 116-117mph.

Klortho

iTrader: (2)

Pullied 03/04 Cobras with a good tune can make around 430 or so at the wheels, if they put a 2.8 pully on, it jumps even more (saw one make 517 torque with one) but they heat up fast. As long as they haven't dropped a KB or Whipple on it it may take the LE3, if they have put one of those SC's on it, you're looking at close to 600 at the wheels.

treemonster

they don't even need a kb or whipple to make sick power. a good cold air kit will add 20-25 rwhp, a good catback another 15-18 rwhp, and with a chip and 2.8 pulley about 70 rwhp and even more torque. but weight is their downfall. they weigh almost 4,000 pounds with an average 200 pound guy driving. about 3,700ish stock

BeefTip

How about a mild cam ie. cc305, xe 224/330, longtubes and 125 shot. Im not sure if you want nitrous or not though.

Vendetta

Remember that a Cobra with basic bolt-ons (cai, x-pipe, catback, pulley/tune) will put down around 450 rwhp. A 2.8" pulley won't add much more than 10 rwhp but will increase the torque by quite a bit.

Not hard to handle with an LE2/3 and a 100-shot, though. Plus, you've got a benefit in that every Mustang owner underestimates the LT1s.

SAPPER

iTrader: (10)

From what I have seen, the only LT1's i'd seen hang w/ pullied (2.8) Cobras are stroked or very well modified LT1's. But there is a 95 with an STS turbo kit on a stock internal motor w/ the 7psi kit. She, yes she, destroyed an 04 Cobra w/ a 2.8 pullied, CAI, and full exh. I think she said when she had her car dyno tuned, it finished out at @ 540rwhp. Not bad for $4k and a weekend compared to $4k and having to break into the motor.
And before anyone says "$4K for heads and cam??" include in the headers, full exh, bolts, gaskets, etc. It all adds up just to make it perform to it's full extent.

BeefTip

Of course the heads and cam will more than likely last much longer than 7psi on a stock lt1.

Siphon

iTrader: (7)

I want to make 400 + rwhp with my LT1, but don't really want to spend $2K on forging the bottom end. How effective would my engine be IF I don't let it rev past 6,000 rpms with the LE3 package?

There is a part of me that wants to get an LS1, but then everyone would EXPECT me to win races. I would much rather gain and earn respect by taking the "slow LT1" and whipping butt.

Are their any major problems that occur with turbo charging these engines, without forging the bottoms?

Tiremarx723

cobras arent aerodynamic enough. look at the angle of the roof compared to a camaro, and they weigh more (more in front for the most part) which makes them more likely to spin tires due to being so front heavy....450rwhp cobra vs 400rwhp camaro...would be close i think..but thats just me..and im really tired, so i might be way off

RealQuick

iTrader: (14)

Exactly. General rule of thumb, it takes an 03/04 cobra with no weight reduction ~40rwhp or so to run the same mph as an fbody.

SAPPER

iTrader: (10)

With a pkg like the LE3, not going past 6k???? it hasn't even really started to make real power yet. The bottom ends will hold some power providing it is still in good shape. My wife's 94 Impala has 136k on it, no ridge on the walls and very minute wear on the bearings (.0018)...MOBIL 1 !!!
Oh and it has it's share of very abusive runs on it, plus N2O for about 15-20 runs plus a few street shots.
It's your call. And I know how you feel about having an LS1, I have one too and if you lose, everyone wants to know why. If you win against a well modded car, they think you're built or spraying. I'm pretty much stock (lid, catback runnin 8.3's in the 1/8th)

Siphon

iTrader: (7)

Come to think of it. . .I never really EVER hit redline. . .and with that much power, I doubt I will unless I am racing. I guess I could go without forging my bottom end, for a while at least. I should have a very stock looking car, that can easily win me some money.