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4.10 To 4.56 Rear Gear?


This is a discussion on 4.10 To 4.56 Rear Gear? within the Performance Mods forums, part of the Viper Truck SRT-10 Discussion category!
How bad will the mpg take a hit going to 4.56? I changed out my Challenger's 3.06 to 3.73 and ...



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  #21 (permalink)  
Old 01-22-2018, 02:44 PM
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How bad will the mpg take a hit going to 4.56? I changed out my Challenger's 3.06 to 3.73 and it cost me 2 mpg.

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Old 01-23-2018, 07:58 AM
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My 05 RC in the state of tune its in gets 11 MPG overall. If I'm just cruising the freeway at 70, it will get 17 MPG. The .5:1 top gear really pays dividends.
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2005 Black RC Born on April, 22nd., 16th hour of 2005: BBK, JTSVP Gen II Shifter, JTSVP Under Drive Pulley, K&N Drop-In, Demon Coils, B&B Manifold Back Exhaust w/ Hi flow Cats, SCT Tuned by Torrie, RX Monster Catch Can, JMB QA1 "kicker" shock, Polyurethane Suspension / Sway bar Bushings, AEM Wideband, Raptor Shift Light, Dynamat Interior, JTSVP Oil Cooler lines, 70/30 DiH2O/Dexcool Mix w/ Water Wetter, ALL fluids Synthetic and a few "sneaky" aero mods

2000 ZX1270R, 200 H.P. / 111 Ft. Lbs.
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Old 01-23-2018, 10:25 PM
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Originally Posted by Psycho1122 View Post
My 05 RC in the state of tune its in gets 11 MPG overall. If I'm just cruising the freeway at 70, it will get 17 MPG. The .5:1 top gear really pays dividends.
Man I wish I could get that in my QC. I'm thinking of going the other way to 4.10s. I get like 6mpg on average around town lol. I do love rolling burnouts though...
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Old 01-23-2018, 10:57 PM
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If you want mpgs you should have got a different truck
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Old 01-24-2018, 07:17 AM
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Anyone that gets semi decent mileage is driving it like a soccer mom (auto) or short shifting every gear.

673 whp - 9.5 combined city/hwy
- 7 city
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Old 01-24-2018, 07:29 AM
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Originally Posted by NukeGM/Ford View Post
Anyone that gets semi decent mileage is driving it like a soccer mom (auto) or short shifting every gear.

673 whp - 9.5 combined city/hwy
- 7 city
OR if you have the typical over rich safe tune or your tune is stock...

Now If I stretch the trucks legs?!? It will get 9
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2005 Black RC Born on April, 22nd., 16th hour of 2005: BBK, JTSVP Gen II Shifter, JTSVP Under Drive Pulley, K&N Drop-In, Demon Coils, B&B Manifold Back Exhaust w/ Hi flow Cats, SCT Tuned by Torrie, RX Monster Catch Can, JMB QA1 "kicker" shock, Polyurethane Suspension / Sway bar Bushings, AEM Wideband, Raptor Shift Light, Dynamat Interior, JTSVP Oil Cooler lines, 70/30 DiH2O/Dexcool Mix w/ Water Wetter, ALL fluids Synthetic and a few "sneaky" aero mods

2000 ZX1270R, 200 H.P. / 111 Ft. Lbs.
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Old 01-24-2018, 02:41 PM
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If you want mpgs you should have got a different truck
Oh I knew what I was getting.. A guy can dream of both right??
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Old 01-24-2018, 06:58 PM
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Originally Posted by IronAffliction View Post
If you want mpgs you should have got a different truck
I knew that one was coming. Been on forums for hot rods for years and anytime someone even hint's at mpg it's always "should have bought you a Toyota" or something on that order. But's that's o.k. when you know it's coming doesn't really matter.
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Old 01-24-2018, 08:07 PM
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Originally Posted by Big Daddy's SRT View Post
I knew that one was coming. Been on forums for hot rods for years and anytime someone even hint's at mpg it's always "should have bought you a Toyota" or something on that order. But's that's o.k. when you know it's coming doesn't really matter.
I wasn't saying that in a dickish manner or anything I was just saying it. Just so ya know
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Old 01-24-2018, 08:39 PM
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No offense taken Iron "keep on trucking"! I've gotten to old to let things bother me much, just want my beer cold, women hot and my hot rods ready to lay the rubber down!
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