right now i have a 93 z28 with no cats,flowmaster,CAI,3200 stall speed, high performance transmission, 3.73 gears, pacesetter long tubes and a chip. i was highly considering doing the full lt4 conversion with the heads and buying the intake manifold...my question is after these mods will i be able to beat a mustang cobra and if not what else should i consider? thanks

 

Year of Cobra will be helpful, I would hope you are referring about 04 or newer with the blower. The mods you have would destroy any Cobra 02 and down.

If you were referring to the new ones, after all the mods and the LT4 conversion I would think it would be a drivers race with you having a slight edge. Those blown cobras are badazz.

 

yea i was talkin about the 03 and 04 they are pretty sick but do you think i should go a little more ratical with the heads? and if i dont get the lt4 heads what intake manifold should i put if i need it

 

If you want to kill the Cobra get the Lloyd elliot LE2 package.

 

yea ill look into those....where could i find them online?

 

He will port your LT1 heads and provide a sick cam. You will be well over 400HP at the wheels.
www.eportworks.com

 

It's going to take a lot of work to beat an 03/04 Cobra with an LT1, unless you're willing to go FI or a big shot of nitrous.

It can be done, but it's no trivial task. You're going to need about 400 rwhp to pull it off, and the suspension and tires to put that power on the ground.

 

Yup, thats a good point, you will need to get that power to the ground.

 

yea i was just thinking of that but when i decide to do them im going to def. go with lloyds it will come out to less and have way more performance but besides gettin that power to the ground will my engine be able to handle all that power?

 

That's assuming the Cobra hasn't had any mods. Last time I went to the dyno, my buddy brought his '04 blown cobra that had the stock unit ported. He put down over 470hp (SAE) to the rear wheels after tuning.

Thomas.

 

I guess it depends on how you look at it.

If you want to take on a 2 year old supercharged Cobra with a 13 year old N/A LT1, you're going to have to spend some $$$ to do it all-motor. In one sense, it's not a completely fair scenario.

So there are some who would say that once you go to power adders, it's personal taste. Some people think nitrous is not kosher, but some do. In that case, going to 150-200 shot would make a modded LT1 (LE2 sounds good) really hard for a Cobra to beat. But you're going to need a forged bottom end in any event. You can take him N/A if you want to bad enough, but it will cost some $$$.

The guys talkin' suspension make a great point. Your Z set up really well to put it's power to the turf can take a supposedly "faster" car that's wastin' power fighting a stock suspension. Driver matters, too.

 

www.advancedinduction.com

Nuff said

 

Their stuff makes power?

 

But you also have to look at how flat and broad it makes power. 470 RWHP sounds really strong (and I respect those Cobras), but I'm betting that supercharged 4.6L doesn't have as broad of a power band as an LE2 does. Question is, what's the average HP over the powerband used while racing.

 

I don't think so, maybe someone else can confirm?