Originally Posted by
amx1397
the 3.7 has more hp from 332 to 340 depending on the year, the limited crossfire has 315, the cost of swapping for that small increase may not be worth it, as far as ho you may want to remember that Chrysler had to down grade the horsepower on the srt6 from 350 for the slk to the srt6 . maybe you could gain the hp you want with mods,, looks as the gas mpg is very close.
A point of correction. The limited Crossfire only has 215 hp, not 315, so if the 3.7 is over 300 hp then a swap would have significant increases.
The SRT6 has 330 from the factory so if you are comparing an SRT6 to the 3.7 then I'd say you are correct, a swap makes no sense. The SRT6 hp, while downgraded from the merc AMG SLK version, didn't actually mean it the SRT6 didn't the the HP or the potential for the HP that the AMG had. Many say it was just a paper reduction and not an actual reduction. Anyway, seems your options are to buy an SRT6, or an upgrade would be in the cards if you are really looking at upgrading a limited, which only has 215 from the factory.
Have fun.