I've considered a V8 swap. I've considered an SRT6/AMG32 swap. Ive considered modding my stock 320. After pursuing all of these options and emailing with a representative at TVT designs and I learn that we barely make 170 RWHP. Now I knew that there was loss between the crank and the wheels, but I thought it was about 10%, giving us 190rwhp and about 300rwhp for the SRT's and 500 v8 swaps, but no. A 5th of our power disappears. My father is a dealer that frequents auctions and there is a 1994 Dodge Viper that is damaged and brings 8k every week. I could probably get it for less than my Crossfire is worth out there, about 10k. I thought this was a fast car when I bought it and it is my favorite looking car, but I would never have bought one if I knew then that the Crossfire was such an underpowered, impossible and expensive to mod, NIGHTMARE!

 

Sorry T-9.. guess it pays to do your homework after all. Get the auction car and tear up the roads with that, but plan to still look good in the XF. The best of both worlds!

 

hey, Tech....@ 20 that viper might be a bit high on insurance even just PL/PD.....something else to consider....but an viper would be a blast to play with

 

What is with the people who come on here, and bee-itch and moan about how the Crossfire isn't a Dodge Viper, or Corvette, or Toyota Supra, or whatever car they really wish they owned?

Buy your damned Viper, and do whatever you want with it, and sell your Crossfire to someone who will actually appreciate it.

BC.

 

Hey, I agree with you Teck-9...... Who in their right mind would want one of these underpowered piece of crap cars? Lets face the facts people.... This slouch of a car in a NA configuration can only do 150+ MPH top end. When tested against other cars in its category on the road course, it came in a measly first place. I also think it really sucks that every time I drive mine, it gets more attention than a Corvette, Mustang or BMW. I might as well get rid of mine too. NOT

 

I don' have money for both. I was told by a TVT rep that the TVT 250+ along with every other mod that they offer would only bring me to 210 rwhp. Did any of you know this ?!?!?!?!?!?! Frankly I can't find a car that I like better. The car has the most underrated and untapped potential to be a supercar. There is no other German 2-seat hardtop fastback car in this world. Go ahead try to find one. Of all the cars i have jacked up with my Father, I have NEVER EVER seen another car this rigid, and I've hoisted up 996 platform 911's. This car doesn't give an inch, if you put a floor-jack under the front right part of the car, 3 of those wheels are comin up at once. No bend, no give. It's my 1st car, I love it, it out-handles everything that I've driven to date. You're all right. Plus it really is my favorite car. But do all cars loose this kind of power to the wheels? Is there anything that can be done about that. I hate American cars. I DON'T WANT A VIPER!! I wanna bring out my Crossfire's potential. The car's great, but the engine sucks. If you try to boost it, it blows up. If you try to put a new engine in, the computer tells you to go f*** yourself. There has to be a way around all of this. And I may seem like an *** for this, but is a 155-160mph top out really considered fast anymore? Several sedans can do that (C63, E63, S65, M5, RS4, RS6, S8, Panamera, CTS-V. Even the Ceyanne and Q7.) My 1998 Audi A4 2.8 Quattro daily luxury grocery-getter can do 150. And oledoc2u, I don't pay insurance. Daddy's a dealer and my cars are covered under fleet insurance, and gas is a Tax write off as he has me listed as an agent for the company and my Crossfire and A4 are listed as my company cars. What little expense there is, Dad pays for, so gas and insurance don't bother me. The cars were payed for as well, the agreement was, I show a car for him every once in a while, stay in school, and pay for any mods myself with what I get for commission on the cars I show that can sell. I like my XF, I just had a moment of weakness with a 400hp+ V10. But I drove it and alas the RT10 though acceleration is breathtaking, it would be no match for an XF around a track. Even an N/A.

Here are the actual top speeds of our cars. The N/A is rev-limited to 176 and the SRT to 188. The Aerodynamics are determined by this equation. Frontal Area (ours is 20.56 ft squared) x Drag Coefficient (ours is .37) x The resistance of wind/air (0.00256) x The top speed cubed / 375 = Horsepower needed. You're actual top speed is the lower of the two speeds between rev-limited and drag limited. Copy this equation into a google search bar and it will solve it for you lol. Google calculator. 20.56 x .37 x 0.00256 x 150 cubed / 375 and you get 175 horsepower for 150mph in the N/A and 20.56 x .37 x 0.00256 x 180 cubed / 375 = 300 horsepower for 180mph in the SRT which sounds about right after the 15-20% power loss from 354 crank hp. Mystery solved.

 

Happy with the power on our crossfire !!!! Next time take it for a good test drive & floor it !!! I did & liked the speed of the crossfire !!

 

Do all cars loose 20% to the wheels? Is that average or normal? Do we really loose that much, or was the TVT rep off his rocker there? Anybody post dynos for a stock N/A?

 

Here you go, it's called a Porsche Cayman. Considering you've lifted such cars as 911's I figured you would've heard of them...

 

From what I know, a 15-20% loss is fairly normal, I think they usually run about 170HP stock on the dyno, of course this changes depending on the dyno.

About the german coupe thing, trust me, over the years there have been many, including the BMW M coupe, which is pure sex.

 

I think the Caymans look a lot like the XF from the rear, especially with the rear fender config and the centered exhaust. It's a nice car, but I prefer the lines and value of a XF. If you want power and acceleration, find an SRT6. But the n/a is plain fun to drive and fast enough to collect tons of speeding tickets, even governed to 150. Let's say that illegally and effortlessly cruising at 120-140 in upstate Michigan is a thrill you won't have with mom's grocery getter.

 

If you're that concerned about the power (and daddy will pay for it anyway) get an SRT6. Problem solved. It's faster than Porsches for half the price. If that still doesn't do it for you, have it Rudy-ized with a SC V8.

15-20% driveline loss is pretty normal. Weather conditions and what kind of dyno was used also factors into that loss significantly.

 

I wondered if somebody would catch me with the Cayman, I thought about editing my post, but the Cayman is just a boxter with a fixed hardtop. The Cayman is my favorite Porsche, but the S still is not as rigid as even a base XF. 911's have back seats and it pisses me off. The fastes cars should be 2 seaters, no reason, just my liking. And if all cars loose 15-20%, then there are some serious errors in factory speed claims on countless cars. I think I am going to go with a 32AMG swap because they make as much numbers as the 55K with TVT's 450+ and the N/A stock is lighter and better geared than the SRT. BUt still. There are only 2 German Fastback 2-seaters in the world. Food for thought. Either way, I have a blue XF N/A roadster that I got salvage for 3 grand with 36k miles. I replaced a control arm and broken oil pan and it runs fine but has a scrap title. I might just keep that and get the RT10 in place of my SSB coupe. But then I loose my German Fastback. I just dunno. The SRT drop in will take me to 180 mph or to the N/A's 327 gear rev limit which is just under that and in the lighter, 327 geared N/A, the SRT engine should have me at 0-60 in under 5 seconds without the weight penalty of a V8. Ok, here's a question/ voting poll. SRT-6 vs N/A vs RT 10 around a road track. Who's 1, 2, and 3. Now keep in mind that motertrend said that the handling on the Rt10 was like playing ping pong with a baseball bat. Look em up on wikipedia. Is the handling gap in the XF's enough to account for the gap in power? I know the SRT6 does 0-60 and top out similar to an RT10 and will out-handle it, but could the N/A stock beat an RT10 around a road course? I've no idea.

 

Hmmmm.

German- check Two seats- check Fastback- check...........

 

FYI it's not as simple as putting a SLK32 into a SRT, btw to SRT's suspension is stiffer and the extra weight is the supercharger. The 55k that rudy is putting in puts down 520 hp. When you find a 32 engine that does that let me know please

One more thing, the 55k engine rudy is putting in only weighs another 100lbs more than the 32k engine.

one last thing
1. Viper
2. SRT
3. N/A

Viper has more low end torque and more horses. The SRT just won't dig like a Viper will. Especially a raw 94 one.

 

You really have no clue what you are talking about most of the time, do you?
The Cayman isn't just a Boxster with a fixed hard top.
It has major additional structural rigidity points, in addition to the roof that tightens up the chassis from front to rear. And I can almost guarantee that there isn't any real difference in the torsional rigidity of an Crossfire vs the Boxster or Cayman equivalent. I get to jack up a Boxster and a Crossfire Roadster on a regular basis. There is no difference visible in that department.

I've driven both on actual road courses, and there are big differences there, but all in the Boxster's favor, outside of actual power to the rear wheels.

Just go take your daddy's money, and buy something else.

And for the love of god, DON'T buy a Cayman.
I really don't want to have to listen to you ***** about how they aren't easily modifiable either.

BC.

 

Yeah, I'm thinking that the Viper's the way to go, but Wikipedia said that it doesn't have stability at high speeds and doesn't handle well. Can a 94 RT10 out handle an SRT or N/A, and is it just as stable or more so at high speeds as the SRT or N/A ? If it can, that's pretty much the last straw for my decision. I probably will buy something else.

 

Teck-9
less typing more learning.....
Wikipedia probably says the teck-9 is a good firearm.....

 

For you, an SRT/NA will out handle the Viper.

Not meant as an insult, but considering your age and you response to this thread I believe the Viper (even the 94' with 400 hp) will be to much for you to handle. You said you thought your NA was fast until you saw the actual numbers.
The SRT will feel like someone shoved a rocket up your butt, just keep the T/A on.

 

the last viper I raced ran a 12 flat quarter to my 12.2....guess who crossed the finish line first....

here's the deal with all that HP....you have to put it to the ground....you can have more than the car can handle, meaning it won't hook up right away, and they have to play catch up in the quarter mile...which they can, but the race is very, very, close...so don't look down your nose at an srt6 vs V-8 yet or even a v-10 for that matter...standing starts aren't all that easy....