5,10,15k?...lets not get ahead of ourselves. The blower swap is about 2-4 k depending on the application and it a simple swap.

 

But the point is that you can't take a stock 03 Cobra and just slap on a KB. Just like us fbodies they have supporting mods that cost $$$. Here is a good list put together by a guy who owns a KB Cobra.

Is this car going to be raced alot at a stip? If so then you'd want to swap the IRS rearend for a live axel. And that can cost you about 5K alone.

There is nothing cheap about heavily modding any car and that includes 03/04 Cobra.

 

90% of the things u listed has nothing to do w/ a Blower Swap. I dont know who would do a build up/ blower swap on any car without doing most of the basic things you listed 1st...Im well aware that it can get expensive to heavily mod any car and not everyone is a heavy drag racer(or do it at all)...The point I was making is that a few bolt ons/pulley swap (far less expensive then heads & cam on a LS1) for a Cobra puts down similiar power(give or take) to a heads cam LS1. For the Ls1 to reach Kenne bell numbers and hold up it will need a build up/fi work...Cobra is much cheaper to reach higher horsepower #'s.

 

I currently have a 04 KB Cobra, that lays down 600 rwhp, and still gets around 20 mph, when I'm not into it. With a simple IRS brace, and poly-bushings, the car hooks hard, and has eliminated the dreaded wheel hop with those rear ends. Like darrens99formul said, supporting mods do cost money, but are a must to prevent weaker parts from failing. I have owned 3 camaros before buying the ford, and enjoy fast cars. I will then sell off the Cobra to acquire a new camaro. Way I see it, doesn't matter what kind of car you have, as long as you enjoy owning it.

84 Z28-Sold
91 RS-Sold
98 SS-Sold
04 KB Cobra-Still haulin' the mail

 

Couldnt agree more, I was pointing out comparitive power output though. Love both brands myself... I also might be holding out for a 5th gen myself. Stll undecided on either building a nice weekend /light use/occasional strip car, or a more daily oriented car which would probably be something new w/ mild bolt ons.

 

It's not my list. That was a list given by a 03 Cobra owner who has done a kenne Bell upgrade. He was letting people in that thread know that there is more involved then just slapping a new blower on to a stock car and calling it a day.

The KB is not that cheap. Here is the price list from the Kenne Belle webiste.

http://www.kennebell.net/pricelist/SC-PRICELIST.pdf

According to Kenne bell the kit for the 03/04 Cobras are $3349 or $3649 with an additional $250 for the highly recommended boost-a-pump.

That's $3600 for the 2.6 or $3900 for the 2.8 and that's just parts alone. Labor, pulley and switch chip are all extra.

By the time it's all said and done a Cobra that was stock going to a KB setup with supporting mods and bolt ons could have you looking at 6-8K in debt. Maybe more depending on how far you go and whether you paid labor fees.

On the LS1 side I would take 4K and get a forged 408 shortblock and then top that off with some L92 heads/intake, big cam and a 200 shot of N20. The 408 setup will cost more then the KB Cobra guy spent but it should also go faster. Especially at the track where the IRS is killing the Cobras ET.

 

or you could probably do KB + nitrous for cheaper on the cobra.

 

Yes you could. And that would be one sick setup on the street. But I would still prefer and put my money on the sprayed 408 at the track. Not because of the motor or dyno results. But rather because of the SRA, automatic transmission and the launching ability of a big *** torque converter. Because at the track (where I do all of my racing) dyno results and trap speeds don't win races. Traction, reaction time and elapsed times do.

 

To each they're own.. Majority of folk's will race on the street every now and then... and HP win's most of the time, then they goto the track.. and if the car has say 200 more hp.. u better nail that 60ft.. or that extra 200hp is gonna catch ya pretty fast..

 

I don't agree that most people street race every now and then. In fact, I bet less then 5% of licensed drivers have ever been in a street race. And I would be among them.

But I do agree that HP wins most of the time. With driving skills coming in second.

Most people who race at the track tend to race within thier class so that you don't have 200+ HP advantage/disadvantage. Or they bracket race so that a 200 HP advantage means nothing.

But if you were referring to the sprayed 408 vs a sprayed KB Cobra comparison then I doubt that a 200 HP advantage happens very often. 408's can easily make 500-550 rwhp NA. Spraying a 200 shot should shoot them at or even over 700 rwhp. I've seen a few sick 03/04 KB Cobras but so far none that I saw made 900+ rwhp.

 

how does 550rwhp+200 shot equal 900rwhp? That's simple math.... But i know what your saying.. Got a bolt Lsx that i tuned going 11.08.. on the strip.. hard to beat that 350whp down the track w/ a 6 speed...

 

i wouldnt say 500-550 rwhp out of a 408 is easy. easy if you have a good amount of $$, then ya. most will fall in the right in the 490-510 range if done alright.

 

It doesn't. It was showing that a sprayed 408 can reach 700 rwhp. So in order for a Cobra to have a 200 RWHP advantage (making the sprayed 408 really need to nail that 60') the Cobra would need to have 900 rwhp.

 

It'll depend on the cam. If the person is looking for a streetable setup then you're right about 490-510 rwhp. Track only cars with giant cams are the ones that tend to dyno higher in the 500-550 rwhp range.

 

I make up for the 95 percent of the people who dont race. I go to town to get milk and im hunting haha.