gear ratio questions

Boggin · 09-21-2010, 06:23 PM

1. what would be the best gear ratio for fuel economy with a 3.0 automatic and 33x12.5s? currently have 3.73s

2. is an installation kit necessary?
thanks

LHP · 09-21-2010, 07:08 PM

Fuel economy with 33's and a 3.0L does not add up. You will have a tough time at the pumps no matter what gear.

Boggin · 09-21-2010, 07:27 PM

i know im just looking for the best i can get

Stxrangerbumper · 09-21-2010, 07:44 PM

depent all what you do with your truck. the highway or driving with a load-- for me wanted to work in 4.56

Boggin · 09-21-2010, 07:45 PM

town driving and trail riding

Stxrangerbumper · 09-21-2010, 07:56 PM

it might help you
http://www.therangerstation.com/tech...tirechart.html

bigblockford79 · 09-21-2010, 07:56 PM

4.10 would help some to get back near what the stock final drive ratio was, if it sees more trail than road maybe go 4.56 to move a little more in the low end area. Also, if your road driving consists of mostly under 55 MPH i would go 4.56

**adsm08** · 09-21-2010, 07:59 PM

4.10s or lower if you are in town a lot. On the highway I might have said something a bit higher, but 4.10s at least.

4.10 gears should preserve your stock drive ratio pretty closely. 4.56's will drop it a bit and make starting easier. 5.13 gears might not be a bad idea if you stay in town and never go above 55 MPH. Those will kill you if you ever get on the highway though.

Go look at the tire and gear chart. That should give you some idea of what you will be looking at.

Boggin · 09-21-2010, 08:03 PM

thanks ill look at the chart. i was htinking 4.10s too but theyre expensive as hell for the d35, more expensive than 4.56s or other gears. so i might be sticking with my 3.73s

**adsm08** · 09-21-2010, 08:10 PM

33s and 3.73s will kill you dude. On the highway it would be BA. In town it will suck.

Boggin · 09-21-2010, 08:11 PM

ok. i might just leave the 33s on the 79 then and put the bald 31s on the ranger lol

**AllanD** · 09-21-2010, 08:15 PM

I recommend 4.10's on 3.0 2wd Rangers running smaller tires.

So 4.10's certainly aren't going to hurt...

AD

09-21-2010, 06:23 PM	#1
Boggin Member Join Date: Nov 2007 Model: 89 bronco ii Class: 4x4 Used For: going inappropriate places Posts: 5,722 Rep Power: 29 iTrader: (4)	gear ratio questions 1. what would be the best gear ratio for fuel economy with a 3.0 automatic and 33x12.5s? currently have 3.73s 2. is an installation kit necessary? thanks __________________ 97 Jeep TJ. 6" lift and 33's. 79 F150, restoring. 90 Mustang 5.0L sold: 89 BII, lifted, bumpers, winch, and stuff "Dont know how to drive automatic"- Chance. RIP Buddy.
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09-21-2010, 07:08 PM	#2
LHP Junior Member Join Date: Sep 2010 Location: Ottawa, Canada Year: 2002 Make: Ford Model: Ranger FX4 LV2 Engine: 4.0 Class: 4x4 Used For: avoiding driving a car Posts: 41 Rep Power: 6 iTrader: (0)	Fuel economy with 33's and a 3.0L does not add up. You will have a tough time at the pumps no matter what gear.
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09-21-2010, 07:27 PM	#3
Boggin Member Join Date: Nov 2007 Model: 89 bronco ii Class: 4x4 Used For: going inappropriate places Posts: 5,722 Rep Power: 29 iTrader: (4)	i know im just looking for the best i can get __________________ 97 Jeep TJ. 6" lift and 33's. 79 F150, restoring. 90 Mustang 5.0L sold: 89 BII, lifted, bumpers, winch, and stuff "Dont know how to drive automatic"- Chance. RIP Buddy.
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09-21-2010, 07:44 PM	#4
Stxrangerbumper Member Join Date: Jul 2010 Location: Ontario, Canada Year: 2009 / 1993 Make: B2300 / f250HD Model: MAZDA/FORD Engine: v6 3.0L/ 7.3L Class: 2X4/4X4 Used For: DD Posts: 831 Rep Power: 7 iTrader: (0)	depent all what you do with your truck. the highway or driving with a load-- for me wanted to work in 4.56 __________________ Notice → to turn around: move the steering wheel in the direction you want to go abut ... and then GAAAZZzzzzz! ..Well my rig's a little old,but that don't mean she's slow.←.-.↑.-.↓.-.→ Last edited by Stxrangerbumper; 09-21-2010 at 08:35 PM.
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09-21-2010, 07:45 PM	#5
Boggin Member Join Date: Nov 2007 Model: 89 bronco ii Class: 4x4 Used For: going inappropriate places Posts: 5,722 Rep Power: 29 iTrader: (4)	town driving and trail riding __________________ 97 Jeep TJ. 6" lift and 33's. 79 F150, restoring. 90 Mustang 5.0L sold: 89 BII, lifted, bumpers, winch, and stuff "Dont know how to drive automatic"- Chance. RIP Buddy.
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09-21-2010, 07:56 PM	#6
Stxrangerbumper Member Join Date: Jul 2010 Location: Ontario, Canada Year: 2009 / 1993 Make: B2300 / f250HD Model: MAZDA/FORD Engine: v6 3.0L/ 7.3L Class: 2X4/4X4 Used For: DD Posts: 831 Rep Power: 7 iTrader: (0)	it might help you http://www.therangerstation.com/tech...tirechart.html __________________ Notice → to turn around: move the steering wheel in the direction you want to go abut ... and then GAAAZZzzzzz! ..Well my rig's a little old,but that don't mean she's slow.←.-.↑.-.↓.-.→
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09-21-2010, 07:56 PM	#7
bigblockford79 Member Join Date: May 2008 Location: West Michigan Year: 1979/93 Make: Ford Model: f250/ranger super Engine: 466 Class: 4x4 extreme Used For: Holding down jackstands in the barn. (for Now ;)) Posts: 102 Rep Power: 11 iTrader: (1)	4.10 would help some to get back near what the stock final drive ratio was, if it sees more trail than road maybe go 4.56 to move a little more in the low end area. Also, if your road driving consists of mostly under 55 MPH i would go 4.56 Last edited by bigblockford79; 09-21-2010 at 08:02 PM.
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09-21-2010, 08:03 PM	#9
Boggin Member Join Date: Nov 2007 Model: 89 bronco ii Class: 4x4 Used For: going inappropriate places Posts: 5,722 Rep Power: 29 iTrader: (4)	thanks ill look at the chart. i was htinking 4.10s too but theyre expensive as hell for the d35, more expensive than 4.56s or other gears. so i might be sticking with my 3.73s __________________ 97 Jeep TJ. 6" lift and 33's. 79 F150, restoring. 90 Mustang 5.0L sold: 89 BII, lifted, bumpers, winch, and stuff "Dont know how to drive automatic"- Chance. RIP Buddy.
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09-21-2010, 08:11 PM	#11
Boggin Member Join Date: Nov 2007 Model: 89 bronco ii Class: 4x4 Used For: going inappropriate places Posts: 5,722 Rep Power: 29 iTrader: (4)	ok. i might just leave the 33s on the 79 then and put the bald 31s on the ranger lol __________________ 97 Jeep TJ. 6" lift and 33's. 79 F150, restoring. 90 Mustang 5.0L sold: 89 BII, lifted, bumpers, winch, and stuff "Dont know how to drive automatic"- Chance. RIP Buddy.
	Tweet

09-21-2010, 08:15 PM	#12
AllanD RBV Technical Advisor Join Date: Jun 2001 Location: East-Central Pennsylvania Year: 1987... sorta Make: Ford Model: Ranger Supercab Engine: '93 4.0 Class: 4x4 Used For: Roadtrip Warrior Posts: 7,169 Rep Power: 47 iTrader: (18)	I recommend 4.10's on 3.0 2wd Rangers running smaller tires. So 4.10's certainly aren't going to hurt... AD __________________ Gun Control - A theory espoused by some monumentally stupid people; who claim to believe, against all logic and common sense, that a violent predator who ignores the laws prohibiting them from robbing, raping, kidnapping, torturing and killing their fellow human beings will obey a law telling them that they cannot own a gun.
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