how much HP, opinions

turkeybird56

Military Vet 1976-1996 Retired US Army
Military
Joined
Aug 2, 2018
Posts
11,856
Reaction score
32,533
Location
Central Texas
Ram Year
2019 Bighorn, 4 X 4, 3.21 rear, Bright Flame Red Pearl Coat, Mopar tonneau cover,Westin Bed rug
Engine
Hemi 5.7

kurek

Senior Member
Joined
Aug 7, 2019
Posts
2,431
Reaction score
3,293
Location
Northwest
Ram Year
2015
Engine
Hemi 5.7
Given that the RFE transmission was originally designed around the 4.7 at the end of the 1990s and has really been stretched to its limits to be reliable behind a stock 5.7, don't forget to come back here and call the transmission a "piece of junk" after you boost the horsepower on your engine way past what it was designed to handle.
 

IDSandman

Senior Member
Joined
Jul 10, 2021
Posts
194
Reaction score
215
Location
Idaho
Ram Year
2018
Engine
5.7
My buddy that worked at Big 0 Tires had a 2011 Sport and he was talking about 500 hp but he had long headers, tune and cammed out I believe ... So you could be looking at around 420 hp with just a good tune and shorty headers alone probably closer to 450 hp realistically
I could be wrong but I find it very difficult to believe that he gained 100hp just off those listed mods. Procharger bolted on, absolutely.
 

CheechDogg.0n37s

@CheechDogg.0n37s @southerncalrams
TOTM Winner
Joined
Nov 20, 2018
Posts
3,083
Reaction score
2,602
Location
Riverside California
Ram Year
2018 2wd
Engine
HEMI 5.7 Revolution 4.88s
I could be wrong but I find it very difficult to believe that he gained 100hp just off those listed mods. Procharger bolted on, absolutely.
That is what he claimed not me ... and the cam alone can gain up to 150 HP if it's a stage 2 from what I understand ... What exactly he did I have no clue, but his flex was 500 hp on that hemi ...
 

CheechDogg.0n37s

@CheechDogg.0n37s @southerncalrams
TOTM Winner
Joined
Nov 20, 2018
Posts
3,083
Reaction score
2,602
Location
Riverside California
Ram Year
2018 2wd
Engine
HEMI 5.7 Revolution 4.88s
But I do know that a stage 2 is turbo charge application so you probably are correct about that ...
 

kurek

Senior Member
Joined
Aug 7, 2019
Posts
2,431
Reaction score
3,293
Location
Northwest
Ram Year
2015
Engine
Hemi 5.7
I could be wrong but I find it very difficult to believe that he gained 100hp just off those listed mods.

I got a Diablo for my wife's car a while back just to correct the speedometer for new gears, the canned tunes make the car worse so we put it all (other than speedo correction) back to stock after trying them out.

But the reason I bring that up is they boast 20 horsepower just from the tuner and I'm certain all of that power comes from just raising the rev limiter a little bit. If your heads and intake can flow enough to keep making torque a few hundred RPM higher, boom higher peak horsepower number.

Doesn't really make the car faster in any material way but look at that number you can point at! :Big Laugh:
 

16WhiteQC

Senior Member
Joined
Oct 17, 2016
Posts
340
Reaction score
176
Location
Mid Hudson valley, NY
Ram Year
2016
Engine
5.7
Hmmm, a good tune - 30hp, good shorties - 10-15hp (some how kooks claims 25+ with their shorties, i doubt that though), intake/muffler maybe 5hp.

Best case +50hp
 

seabrook

Senior Member
Joined
Nov 14, 2018
Posts
859
Reaction score
702
Location
seabrook
Ram Year
Black 2018 Night
Engine
5.7 3.92 anti slip
I could be wrong but I find it very difficult to believe that he gained 100hp just off those listed mods. Procharger bolted on, absolutely.
just longtubes and a tune is close to 50 hp. plus a cam i could see it. fi would yield way more than 100
 

seabrook

Senior Member
Joined
Nov 14, 2018
Posts
859
Reaction score
702
Location
seabrook
Ram Year
Black 2018 Night
Engine
5.7 3.92 anti slip
I got a Diablo for my wife's car a while back just to correct the speedometer for new gears, the canned tunes make the car worse so we put it all (other than speedo correction) back to stock after trying them out.

But the reason I bring that up is they boast 20 horsepower just from the tuner and I'm certain all of that power comes from just raising the rev limiter a little bit. If your heads and intake can flow enough to keep making torque a few hundred RPM higher, boom higher peak horsepower number.

Doesn't really make the car faster in any material way but look at that number you can point at! :Big Laugh:
what does she have? my buddy did a henessey tune on his 6.1 and it was very noticeable! also a guy here at work tuned his 392 charger and he said it made it dangerous lol (he’s a chemE)
 
Top