Sanity Check... Ring and Pinion

Discussion of the 5.7L-6.1L-6.4L HEMIs.

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PrettyBlueCoffin
Posts: 33
Joined: Wed Jul 28, 2004 1:21 pm
Location: Temcula, California
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Sanity Check... Ring and Pinion

Post by PrettyBlueCoffin »

Let me have it.

Have I lost it, I'm debating on putting 4:56 on my 2WD QC 04.
2004 RAM 1500 QUAD CAB(R) LARAMIE 4X2 SWB
3.92 Axle Ratio / Anti-Spin Differential
usedtobert
Posts: 35
Joined: Wed Jul 28, 2004 10:49 am

Post by usedtobert »

IMO this would be an excellent mod. The Hemi makes power in upper rpms. The 4.56 gears would propel you to these rpms quicker. I believe their is only a 300 rpm increase at 70 in OD. Noticable but still very streetable. Their should be no negatives to this mod at all.
PrettyBlueCoffin
Posts: 33
Joined: Wed Jul 28, 2004 1:21 pm
Location: Temcula, California
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Post by PrettyBlueCoffin »

I have been getting some flack about mpg loss??
2004 RAM 1500 QUAD CAB(R) LARAMIE 4X2 SWB
3.92 Axle Ratio / Anti-Spin Differential
Hemidakota
Posts: 149
Joined: Thu Jul 17, 2003 9:31 am
Location: Oceanside

Post by Hemidakota »

Hey Craig, try the 5.10:1 gearing. :lol:
Steve
Future Purchase: 2006 Charger SRT-8/2006 MegaCab 6.1 Hemi
Image
"Coming soon 600HP SRT-10 to pull the SRT-4 & SRT-8 Charger to the track!"
usedtobert
Posts: 35
Joined: Wed Jul 28, 2004 10:49 am

Post by usedtobert »

Hmmm, Yes you could lose MPG with the 4.56 gears since you'll want to keep your foot in it more. You may also notice a difference on a long trip at freeway speeds. However I have heard reports of people not lossing any gas mileage and evening reporting some gains due to the engine being in it's powerband more often and not having to work so hard.

IMO DO NOT mod a vehicle if you care about MPG. A lot of mods like headers, air intakes, etc. can help your MPG... but only if don't take advantage of the extra power.
TheRedneckWay

Post by TheRedneckWay »

HEMI DAKOTA.....

whio sells 5.10s for a 9.25 Chrysler rear end? I would love to have one of those!!! 4.56s are the lowest gears Ive found
GreenbeanZ28
Posts: 22
Joined: Wed Apr 28, 2004 2:59 pm

Post by GreenbeanZ28 »

I've been seriously thinking of putting in a 4.56 in my truck. Its a dawg off the line, and I think it'll help when towing.
Russ
'96 Z28 M6-Stock rear springs and shocks
11.41@119 423/375 rwhp/rwtq
'04 Ram 1500 SLT 2WD
Mac CAI, Flowmaster Side exit exhaust.
TheRedneckWay

Post by TheRedneckWay »

if you will notice, the HEMI isnt really all that stout below 2000 rpms....i dont know why, but its sluggish down low. 4.56s will remedy most of this problem by getting you out of the basement faster.
Asa

Post by Asa »

i got 4.56 gears and love them, my rpm only went up 300-400 at 70 mph, and my mpg isn't too bad at 13 city 16 hwy

the best part 14.7@92mph
Hemidakota
Posts: 149
Joined: Thu Jul 17, 2003 9:31 am
Location: Oceanside

Post by Hemidakota »

TheRedneckWay wrote:if you will notice, the HEMI isnt really all that stout below 2000 rpms....i dont know why, but its sluggish down low. 4.56s will remedy most of this problem by getting you out of the basement faster.
It is the auto. I don't have a problem with the 5-speed manual.
Steve
Future Purchase: 2006 Charger SRT-8/2006 MegaCab 6.1 Hemi
Image
"Coming soon 600HP SRT-10 to pull the SRT-4 & SRT-8 Charger to the track!"
Hemidakota
Posts: 149
Joined: Thu Jul 17, 2003 9:31 am
Location: Oceanside

Post by Hemidakota »

TheRedneckWay wrote:HEMI DAKOTA.....

whio sells 5.10s for a 9.25 Chrysler rear end? I would love to have one of those!!! 4.56s are the lowest gears Ive found
No one as of yet.
Steve
Future Purchase: 2006 Charger SRT-8/2006 MegaCab 6.1 Hemi
Image
"Coming soon 600HP SRT-10 to pull the SRT-4 & SRT-8 Charger to the track!"
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