It depends on if the R/T has a 6speed or not and then the mods that have been done...
With my mods, on my '09 R/T 6 speed...I make more RWHP than the 392(I make 417hp on a Dynojet vs. my 364RWHP baseline)and most 392's only make 400ish for RWHP stock with no programming available...I have LESS $ in my R/T than the 392SRT8 costs...even with suspension & brake mods, bolt on engine mods, and programming of the PCM. If I do a VVT Cam and ported heads...I will be close to 500 RWHP...and still be under the cost of the SRT8-392 without supercharging or forging the motor. Just depends on what's important to you and where you want to go...better off buying a used Challenger 6-speed and modding the hell out of it.
The 6.4 is a huge difference. I had a 09' supercharged R/T and my 6.4 is way faster than my old R/T. I also made the switch from a manual to an automatic, because I wanted to do better at the drag strip. The HP numbers don't tell the whole story. The real difference is the torque, which is more than 90 ft/lbs more than the stock 6.1, and makes the 6.4 a beast. This 6.4 comes out of the hole like a rocket compared to my old 5.7. My car just dragged on Friday and got a corrected E.T. of 12.2. The actual E.T. at +2000 Density Altitude was 12.5 with drag radials.
The best suggestion I can make is to test drive a 392 turn off traction control and go WOT on a straight road. Your head will be slammed into the headrest. Judge for yourself.
I'm with all the guys above. I too have had a heavily modded 5.7 with SC and a 6.1, this 392 is awesome. It's just an all around better car than the old RT or 6.1 was/is. HP #'s won 't tell the full story. Hard to tell you without driving it. There are few cars out there that accelerate from a dead stop like this heavy beast. I have a Hennessey Viper and coming out of the whole my 6.4 is there. Different story though once we get above 45mph. All in all this 6.4 is one of the more satisfying cars I've owned. I buy hotrods all the time but this will be one I'm keeping.
I just traded my 11 rt for a 12 srt...i dont care what anyone says. People say you can take an rt and make it a srt clone by doing suspension and some hp upgrades. Nope I had suspension on my rt and it wasnt nearly as responsive as the srt it. The srt is night and day. Its a completely different animal.
The 6.4 is a huge difference. I had a 09' supercharged R/T and my 6.4 is way faster than my old R/T. I also made the switch from a manual to an automatic, because I wanted to do better at the drag strip.
Sounds to me you didn't drive a stick very well if it is way faster!!! I would think a supercharged 5.7 should hang pretty easily with a 392!!
Hurst equipped,Tuned by Hemifever Tuning,180 jet thermo, Corsa Exhaust, Mopar CAI, BT Catch Can
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.