Actual HP for the 5.7 liter HEMI - Dodge Challenger Forum: Challenger & SRT8 Forums
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#1 (permalink) Old 01-10-2012, 03:32 AM
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Actual HP for the 5.7 liter HEMI

This may be beating a dead horse, but why are we suppose to believe they "de-tuned" the 5.7 to go into a Challenger RT (375hp w/406 ftlbs)when the same motor is rated at 390 hp and basically the same torque of the the Ram? Oh yeah, because they probably couldn't get people to spend that extra 10 or 12g for 35hp you really get in the SRT8, but seriously are we all that stupid?
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#2 (permalink) Old 01-10-2012, 04:14 AM
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The Ram has a different intake and the 6-speed 5.7 has 386hp with a .1 increase in combustion.



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#3 (permalink) Old 01-10-2012, 04:18 AM
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Quote:
Originally Posted by govolz1970 View Post
This may be beating a dead horse, but why are we suppose to believe they "de-tuned" the 5.7 to go into a Challenger RT (375hp w/406 ftlbs)when the same motor is rated at 390 hp and basically the same torque of the the Ram? Oh yeah, because they probably couldn't get people to spend that extra 10 or 12g for 35hp you really get in the SRT8, but seriously are we all that stupid?

It has nothing to do with spending the extra on the SRT8, because honestly, most of the money in an SRT car is in the rims and the brakes

The 5.7 in the car is different than in the Ram. The Ram has the dual path intake that is used on the 392, and also has variable valve timing and slightly more compression. Those things add up to more torque (which is useful in a truck) and adds horsepower as well.

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#4 (permalink) Old 01-10-2012, 04:21 AM
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Apparently most people are. The enthusiasts like yourself and all others who are apart of forums know what we have and what our R/T's are capable of. Do I regret not getting an SRT, not one bit. Now the 392, that is one beast all on its own. Lol. But then again I see them in lots going for 50k+ when you can buy an R/T for low 30k's. Its all in the eye of beholder I guess.

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#5 (permalink) Old 01-10-2012, 07:05 AM
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The whole 375 vs 390 hp thing is certainly the great paradox for Dodge's Hemi products. A part of me still believes that it was/is mostly a marketing distinction influence rather than actual mechanics of the hardware.

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#6 (permalink) Old 01-10-2012, 07:33 AM
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Has anyone posted dyno numbers from the Ram's Hemi?

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#7 (permalink) Old 01-10-2012, 07:45 AM
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i got the Ram with 5.7.

active intake manifold + auto 6-speed + 3.92 gear = more hp/tq than an R/T
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#8 (permalink) Old 01-10-2012, 07:50 AM
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The Ram 5.7 has a BIGGER CAM and variable intake. Thats why......................

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#9 (permalink) Old 01-10-2012, 07:51 AM
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In the jeep the hp is 360.

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#10 (permalink) Old 01-10-2012, 07:52 AM
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Quote:
Originally Posted by Rudedog View Post
Has anyone posted dyno numbers from the Ram's Hemi?
be on the lookout for my dyno numbers when my truck hits @ 4500-5000 miles.

it has 1300 right now lol.

gonna let'er break in - then i'll spin the rollers.

looking for @ 330-340hp and 370tq untuned on ARD's dyno in Houston.

FYI, my 392 made 418/420 with flowmaster Super 44 weld in mufflers with 3" straight pipe and a Legmaker CAI.
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