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Unread 02-27-2002, 12:56 AM   #1
holkster
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Gear Ratio

I am about to have a 3" BDS lift installed and 33" 12.5 tires. Dose anyone run 33" tires? If so what gears do I need? Can I run the stock 3.07:1 for awhile without trashing my Jeep?

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Unread 02-27-2002, 01:00 AM   #2
igofshn
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33's with 3.07, you are going to hate life.
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Unread 02-27-2002, 01:05 AM   #3
holkster
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What size tier is recomended for the 3.07 stock? I have 30"x9.75 now with no lift. If you could not tell I am new at this.
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1999 TJ 4.0l I6 Stock for now!! 4.10 gears on the way 3" BDS in the garage with hopes of 33"x12.5 BFGs
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Unread 02-27-2002, 01:08 AM   #4
igofshn
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It probaby came stock with 205 or 215/75.
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Unread 02-27-2002, 01:09 AM   #5
holkster
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I bout it used with 30"x9.75 Goodyears on it.
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1999 TJ 4.0l I6 Stock for now!! 4.10 gears on the way 3" BDS in the garage with hopes of 33"x12.5 BFGs
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Unread 02-27-2002, 07:45 PM   #6
IBjeepN4mud
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3.07 and 33's will give you poor gas mileage a loss of power and forget 5th gear it is gone. I mean to that is 4th will be your OD and 5th is too low RPM unless you drive 80 MPH.
The perfect gear is 4.56 and this will correct your milage and power loss. You will even get your 5th gear back.
If you read up this is the most common gear ratio.
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Unread 02-27-2002, 09:28 PM   #7
holkster
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I am going to wait on the tires and regear to probably 4.56 or 4.10
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Unread 02-27-2002, 10:15 PM   #8
Chumpbusta
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3.07 is an odd gear....I have a 6cyl with the roiginal gears (3.73). I run 35x12.5x15's. My jeep runs fine. I did't lose 5th, but pretty damn close. If the wind blows, I have to down shift.
I have done ALOT of investigative work, and I'll agree with one of the other guys...4.56 is the most preferred gearing. However, since ur only running 33's, you might be able to pick up those 4.10s that came with ALL of the 4 banger YJ's....sure you can find in any junkyard.
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Unread 02-28-2002, 12:16 AM   #9
bobznew
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Quote:
Originally posted by holkster:
I am about to have a 3" BDS lift installed and 33" 12.5 tires. Dose anyone run 33" tires? If so what gears do I need? Can I run the stock 3.07:1 for awhile without trashing my Jeep?
This is the exact setup I run, and it's really not so bad. Course, I don't do any rock-crawling either!
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Unread 02-28-2002, 05:46 AM   #10
Big92Jeep
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I run 33" tires with 4:10 gears. I had a dana 35 with 4:56 gears at one time. I thought the RPMs where a little high on the road. So when I re-geared fron't and rear I went with 4:10s. I think it's the perfect ratio for 50% road/ 50% trail.

Just my 2˘

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