Where do you guys get performance parts from, I have an 04 crossfire?

 

There are very few :
74 mm throttle body - from scrap yards
cold air intake - from NeedsWings
ECU tune - from eurocharged
V8 swap - from many sources
wavetrack LSD - from Wavetrack

 

Interesting info. Has anybody who's added all that dyno'd the car after to check the hp gains?

 

There is as of yet no "official documented" data been posted.
Most agree that butt feel is 30-50 HP.

 

Thanks. I guess with the SRT6 there are more options, such as a pulley. But so with the NA engine, is that all then? Next step is adding a supercharger? Kleemann claims 320hp if I remember correctly for a NA M112 with their supercharger. Then next step is a V8 swap I guess.

 

With the V8 swap, you can decide on NA or supercharged.
Jim down in Ft Lauderdale got one into the high 10's

 

On a NA engine, good luck lol
coding nightmare testing to add boost to a non boosted mb engine.
They say it will not read boost

I was always curious which map sensor was used, NA and SRT use 2 different map sensors.

some map sensors only read negative pressure some positive pressure

And a NA engine has imuch higher compression than boosted models so will not handle much boost before a big problems.

 

RWHP is less than 200 about 195.
Someone said they had 200 but no chart to back it up.
These are dyno results before and after of a Euro tune on an NA, with a NeedsWinds intake, I had one chart that said 197 RWHP but lost it, it probably had more mods.

 

what engine fits the transmission

 

Yeah. A Supercharged M113 5.4 has the potential to be a real monster.

 

That makes a lot of sense and it might explain reports I found that the Kleemann will only work if installed by Kleemann themselves. Read of people having bad luck with their Kleemann DIY trials. Kleemann probably takes care of the coding etc.

This is why I started looking at V8 swaps. Because I want a manual and as a manual swap in a SRT6 is a nightmare, and boosting the NA V6 seems impractical, a V8 swap seems not only more straight forward but probably even cheaper. Or at least not more expensive. Well, definitely it's proven to be possible at least. Quite a few V8s done by now. But I only saw one Crossfire for sale which had a Kleemann supercharger installed. Seller claimed 320hp, which is in the ballpark Kleemann claims themselves.. The kit cost new around 10K. Never saw a SRT6 with a manual swap. But V8 swaps seem quite common. Now that I found out that it's possible to have the V8 with a manual without any problems, it seems a V8 swap is in my future. I already located M113 engines for peanuts. Even saw a NA M112 for 200!

 

Thanks a lot for posting those. Very interesting. Is 170hp an accepted result for RWHP from a NA V6? Or is this a matter of horses escaping with age?

Thanks again.

 

A matter of the loss between the engine and the wheels.

say a engine makes 200 flywheel hp
then Automatic transmission will use 25 - 35 % of that power before it get to the tail shaft of the trans
standard manual trans is 15 - 25 % but with the massive dual mass flywheel it is the top of that range.
then driveshaft angle play in, bearings, gearing, etc etc etc etc etc

Everything is rotational weight, and every tenth of a pound of rotational weight is about ten pounds of static weight.

 

Thanks. Yes, I understand transmission/drivetrain loss. I was asking if this is the standard for the Crossfire. Or if this is less than a new Crossfire would output. This is about a 21% loss from 215 hp. But losses are different for each car. There are RWD cars which lose 12% and cars which lose much more.

 

if you use a aspirated mercedes V8 non amg ,the srt will outrun it they have ABOUT the same hp,, and that is all the std tranny can take.
so you change the engine and can't drive it like you stole it. just think you could start your swap and in about two years you can drive it, maybe two years of fun if you can get a few people to help you do the work, example v6 wiring harness and v8 wiring harness side by side , lots of wires,,for the wipers to work you have to marry brown & brown w/white strip ::to blue and blue w/ black strip now the wipers will work ,now you have to do every sensor in the car the same way for every thing to work. we have a harness already made up,no it is not for sale.
but we can install a mercedes V8 supercharged amg into your crossfire or buy my newest V8 installation in a srt6. mods only exhaust and car rune 11.76 @ 123 jim

 

As I replied to you in the other thread, it wouldn't work for me to buy your car. For the same reasons it would also not work to have you installing the V8 for me.

But so you are saying that everybody who has done a V8 took in average 2 years? I can see the first pioneers taking that long. But now that it has been done several times, isn't the knowledge out there? Or are the people who done not sharing it?

 

Rob at neewswings will be able to help you with mods to the limited anything iwe can do to help let us know good luck