3:45's vs 4:10's MPG - ZR-1 Net Registry Forums

Hammer · 02-09-2010

For those out there that have made the switch from 3:45's to 4:10's, what kind of gas mileage change have you seen?

I'm driving to BG in May from Idaho and don't want to swap the gears right now if I will see a drastic drop in mileage. That could add substantially to the trip cost.

Thanks

DaveK · 02-10-2010

I have 4.10s and usually get around 25/26 on the highway. Depends on the weight of your foot though too

Jagdpanzer · 02-10-2010

Not seen much of a difference after installing 4.10s in my case.

02-10-2010

Just do it.................. You'll enjoy your drive and get to use 6th gear.

flyin ryan · 02-10-2010

Quote:

Originally Posted by DaveK

I have 4.10s and usually get around 25/26 on the highway. Depends on the weight of your foot though too

You like/love the 4.10's Dave?

DaveK · 02-10-2010

Quote:

Originally Posted by flyin ryan

You like/love the 4.10's Dave?

Mine had the 4.10s in when I got it so I don't really know the 'other side' but it sure moves with the 4.10s!

The gearing feels 'right' for the car and pulls like a demon. Not based on any direct knowledge but I suspect the standard gearing was selected from more of an emmisions/economy goal than actual perfromance.

I'm certainly more than happy with the 4.10s and have no plan to change.

Hammer · 02-11-2010

Well, once again, thanks for all the comments. I'm just gonna do it. Speedo gears on the way from Marc.

GrayZ · 02-11-2010

Don't do it JOHN,

it'll probably cost you at least $26.75 extra in fuel, besides making 6th gear useful, is well, way overated...

Hammer · 02-11-2010

Mopar P5007043 viper gears, from where

http://www.trademotion.com/auction/index.cfm?siteid=214650&catalogid=0
Call Jeromy for prices, under $300 shipped.

Hammer · 02-11-2010

Why are the ARP studs being used?
have there been problems with the bolts? I know they are 20 years old but there are billions of cars with bolts running around.

Does the extra clamping force offered change the setup at all?

02-09-2010	#1
Hammer Join Date: Apr 2006 Location: Ideho Posts: 2,653	3:45's vs 4:10's MPG For those out there that have made the switch from 3:45's to 4:10's, what kind of gas mileage change have you seen? I'm driving to BG in May from Idaho and don't want to swap the gears right now if I will see a drastic drop in mileage. That could add substantially to the trip cost. Thanks __________________ [I][FONT=Comic Sans MS]John Boyd[/FONT][/I] [I][FONT=Comic Sans MS][SIZE=1]Ideho[/SIZE][/FONT][/I] [FONT=Comic Sans MS][SIZE=1][I]2015 ZL1 [/I][I]Camaro #1121 BLACK/BLACK 6 SPD (540 RWHP)[/I][/SIZE][/FONT] [I][FONT=Comic Sans MS][SIZE=1]1991 ZR-1 #458 [COLOR=red]RED/[/COLOR][COLOR=black]BLACK 72[/COLOR]k miles ([B][COLOR=red]SOLD[/COLOR][/B]) 1991 ZR-1 #473 [COLOR=red]RED/[/COLOR][COLOR=black]BLACK [/COLOR]37k miles ([B][COLOR=red]SOLD[/COLOR][/B])[/SIZE][/FONT][/I]

02-10-2010	#2
DaveK Join Date: Jul 2004 Location: Sudbury, Ontario. Canada Posts: 1,538	Re: 3:45's vs 4:10's MPG I have 4.10s and usually get around 25/26 on the highway. Depends on the weight of your foot though too __________________ 1991 #1516 Black/Black davidmkelly.com "Speed is often confused with insight." - Johan Cruijff

02-10-2010	#3
Jagdpanzer Join Date: Apr 2007 Location: Northern VA Posts: 2,661	Re: 3:45's vs 4:10's MPG Not seen much of a difference after installing 4.10s in my case.

02-10-2010	#4
HAWAIIZR-1 Guest Posts: n/a	Re: 3:45's vs 4:10's MPG Just do it.................. You'll enjoy your drive and get to use 6th gear.

02-11-2010	#7
Hammer Join Date: Apr 2006 Location: Ideho Posts: 2,653	Re: 3:45's vs 4:10's MPG Well, once again, thanks for all the comments. I'm just gonna do it. Speedo gears on the way from Marc. __________________ [I][FONT=Comic Sans MS]John Boyd[/FONT][/I] [I][FONT=Comic Sans MS][SIZE=1]Ideho[/SIZE][/FONT][/I] [FONT=Comic Sans MS][SIZE=1][I]2015 ZL1 [/I][I]Camaro #1121 BLACK/BLACK 6 SPD (540 RWHP)[/I][/SIZE][/FONT] [I][FONT=Comic Sans MS][SIZE=1]1991 ZR-1 #458 [COLOR=red]RED/[/COLOR][COLOR=black]BLACK 72[/COLOR]k miles ([B][COLOR=red]SOLD[/COLOR][/B]) 1991 ZR-1 #473 [COLOR=red]RED/[/COLOR][COLOR=black]BLACK [/COLOR]37k miles ([B][COLOR=red]SOLD[/COLOR][/B])[/SIZE][/FONT][/I]

02-11-2010	#8
GrayZ Join Date: Mar 2006 Location: Innsbrook, Missouri Posts: 1,727	Re: 3:45's vs 4:10's MPG Don't do it JOHN, it'll probably cost you at least $26.75 extra in fuel, besides making 6th gear useful, is well, way overated...

02-11-2010	#9
Hammer Join Date: Apr 2006 Location: Ideho Posts: 2,653	Re: 3:45's vs 4:10's MPG Mopar P5007043 viper gears, from where http://www.trademotion.com/auction/index.cfm?siteid=214650&catalogid=0 Call Jeromy for prices, under $300 shipped. __________________ [I][FONT=Comic Sans MS]John Boyd[/FONT][/I] [I][FONT=Comic Sans MS][SIZE=1]Ideho[/SIZE][/FONT][/I] [FONT=Comic Sans MS][SIZE=1][I]2015 ZL1 [/I][I]Camaro #1121 BLACK/BLACK 6 SPD (540 RWHP)[/I][/SIZE][/FONT] [I][FONT=Comic Sans MS][SIZE=1]1991 ZR-1 #458 [COLOR=red]RED/[/COLOR][COLOR=black]BLACK 72[/COLOR]k miles ([B][COLOR=red]SOLD[/COLOR][/B]) 1991 ZR-1 #473 [COLOR=red]RED/[/COLOR][COLOR=black]BLACK [/COLOR]37k miles ([B][COLOR=red]SOLD[/COLOR][/B])[/SIZE][/FONT][/I]

02-11-2010	#10
Hammer Join Date: Apr 2006 Location: Ideho Posts: 2,653	Re: 3:45's vs 4:10's MPG Why are the ARP studs being used? have there been problems with the bolts? I know they are 20 years old but there are billions of cars with bolts running around. Does the extra clamping force offered change the setup at all? __________________ [I][FONT=Comic Sans MS]John Boyd[/FONT][/I] [I][FONT=Comic Sans MS][SIZE=1]Ideho[/SIZE][/FONT][/I] [FONT=Comic Sans MS][SIZE=1][I]2015 ZL1 [/I][I]Camaro #1121 BLACK/BLACK 6 SPD (540 RWHP)[/I][/SIZE][/FONT] [I][FONT=Comic Sans MS][SIZE=1]1991 ZR-1 #458 [COLOR=red]RED/[/COLOR][COLOR=black]BLACK 72[/COLOR]k miles ([B][COLOR=red]SOLD[/COLOR][/B]) 1991 ZR-1 #473 [COLOR=red]RED/[/COLOR][COLOR=black]BLACK [/COLOR]37k miles ([B][COLOR=red]SOLD[/COLOR][/B])[/SIZE][/FONT][/I]