I just recently bought a 04 limted auto XFIRE and i love it but would like to get more power out of it. My question is how hard would it be to drop a SRT-6 engine into it what all modifications would it take? and i would like to know if you guys know any mechanics or dealerships in thr oklahoma, arkansas, texas area that are competent with XFIRES for the swap and or regular maintenence.

 

Sell your car and buy a srt6 .To much to change, cost to much, and most likey would not work! Bite the bullet .There are some srt6 good deals on ebay craights list etc.Good Luck and happy hunting.

 

Should be possible. Check my thread on V8 conversion as you will have similar issues. Mechanically it is not that hard. The biggest problem I am facing is making the electronics happy. I am about to do the swap and I have a plan that at least in therory should work. I considered the SRT6 engine but felt it wasn't a great investment since you can get SRT6's pretty resonable and they would always be worth more than a conversion. So I decided on a V8. I am not too far from Oklahoma in the Dallas area if you are interested in learning more first hand.

 

If you want to drop in an SRT6 engine, you'll more than likely also need the SRT6 tranny. Way too much of a hassle when you can save money by selling yours and getting an SRT6. Good luck.

 

Here you go.........

https://www.crossfireforum.org/forum...ad.php?t=18674




Have fun.


Basically, just sell yours and buy the SRT!

 

It can be done and you don't have to change transmissions. HDDP built a track car and used an aftermarket ECU. I believe it can be done with the stock SRT ECU, but it has to be unlocked and programmed to your car. Unlocking can be done by Beckman in Atlanta and a mechanic with either Autlogic with the mercedes module or the mercedes star diagnostic system can associate the the ECU to your car. If you do the swap you have to remember to not just try to start it without first getting it hooked up to the diagnostic computer as the ECU will lock after the third attempt to turn the key.

 

The easiest way to do it would be to get a "complete" engine and "tranny drop" out from a salvage company like "LKQ" and make sure the the SRT's wireing harness and all the computers come with it.
Everything should bolt right up. Probably cost at least $5k in "salvaged parts) to do. A lot easier just to buy an SRT in the first place. But since you didn't, and you'd lose too much money trying to sell the 04 that you have now. maybe this might work for ya.
I have know idea what a "reputable" garage would charge you to do the swap. Let your fingers do the walking, and search the yellow pages.

 

Take a look at both the SRT6 and NA repair manuals. If you look at the engine electrical diagnostics for both - you can to see all the sensors and wiring differences between the two.

You not going to be able to just swap the ECU in a NA with an ECU from a SRT6.

Lots of sensors and asscociated wiring harness to make, you'll also need to add a pulse module with and all the harness and relays.

I'm willing to bet the farm that you will spend tons of time and lost of $$$ fabricating, trouble shooting and tuning to get your Crossfire running. And you still wont have the suspension or brakes of an SRT6.

Sell your Crossfire and take all that money and time you'll save from the swap headache and buy three used SRT6's. One for you, one for the wife and to strip down, add a roll cage and take to the track.

 

I have to disagree with some of that above. You would need the SRT ECU complete engine wiring harness and the engine. The stock suspension and brakes are fine. The transmission is fine as well. I am doing basically the same thing but with a V8 from a CL500. Id addtion to the the motor, harness and computer. the only parts I needed were exhuast manifolds from a C43 AMG engine, very slim dual electric fans. I was able to buy all this for for less than the cost of a SRT6/AMG32 engine.

You have to have the ECU unlocked becuase it stores data such as from the key, and VIN number. If you don't unlock and then re-associate the ECU to your car and try to start it, the anti-theft system will activate and you will never get it started.

I personally feel the best swap for a n/a crossfire is a V8. any of the three valve V8's such as 430, 43AMG, 500, 55AMG from 98' on will bolt right in. Depending on engine you will have a little more or a little less HP than the SRT but you will have more torque. then you can add another 150HP with an HPS supercharger and go vette hunting.

If you do the SRT swap, do it for love of the car but don't expect it to ever fetch SRT6 money. On the other hand there are only two V8 crossfires in the world right now and the last sale of one was for 77,000 euros.

I know my swap can be done since there are already two of them terrorizing the roads of Europe. Startech won't tell me how they worked out the computer, but after a ton of research, I have figured it out. IF you decide to go V8 and mine works, I may consider doing the swap for you if you bring all the parts and your car to Dallas.

 

I had a chance to get an SRT-6 cheap, but I thought that all that power would be too much for an old man like me, so I considered putting a n/a motor in it, keeping the spoiler and wheels etc.
My wife said I was crazy to consider it, I will ask her what she thinks of your idea and let you know.

 

To those people who pm'd me asking about my wifes opinion on this matter I have to admit that I was only joking.
My wife thinks that there is an engine under the hood but does not know how to open it to see if that is true, that is about her total knowledge. She cannot drive a stick shift and I am not going to show her although she has hinted a few times that I should. I like those gear teeth just where they are.