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Unread 05-22-2003, 06:31 PM   #1
Yellow Fever
Registered User
Join Date: Sep 2002
Location: California
Posts: 105
What gears should I go with???

Hi Everyone,

I just purchased a '85 CJ7 with 6 cyl, and I was wondering if anyone know what my gear ratio is, or how do I go about finding out. I'm going to get a BDS lift, so I can fit 33's underneath. This will be my daily drive on the highway, so I'll need some speed too. What gear ratio would you guys recommond? Also, will YJ half doors fit on a CJ7?

Yellow Fever

95 YJ - 4 Banger
Pro Comp 4" (What a mistake)
BFG 33 A/T with Black Rock Crawler
4:56 Gear

85 CJ7 - 6 Cyl
Currently being Restored
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Unread 05-22-2003, 07:51 PM   #2
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1978 CJ7 
Join Date: Jan 2003
Location: Lancaster, Pa.
Posts: 1,759
should be numbers on the tag on the rear with the teeth count or jack it up mark the drive shaft and the tire turn the drive shaft 1 turn and count how much the tire turns it will give you a close gear range as far as gearing get gears the will keep you in the stock range with the 33 tires
1978 cj-7 had since 1979
401 .030 over- full floating flat top pistons
crower solid cam 292 dur .500/.510 lift
turbo 400 tranny 2500 stall
model 20 transfer case
aj delux glass body
4" lift
dana 30 frount
dana 44 rear
4.56 gears
13.461 @ 92.45 mph on 37" super swampers on 1/4 mile
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Unread 05-23-2003, 03:30 AM   #3
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Join Date: Feb 2003
Location: Broomfield, Co
Posts: 109
good rule of thumb is tire height in inches times .12
33 inch tires x .12 = 3.96
Youth and talent is no replacement for age and treachery.
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