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post #1 of (permalink) Old 03-28-2000, 09:42 AM
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What gears come stock in 77 cj-7 with 258?

I was wondering what gears come stock in a cj-7, I think it is a 77 or 79 model. It has the 258 straight 6 and 4 speed tranny. The gears seem very high (probably 3.08 or even 2.47 or worse). The jeep doesn't have very much power out of 1st gear and reverse is even worse. The motor is new. It's always lacked torque. I was hoping someone might know the ratio so I don't have to take the back cover off and count teeth.

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post #2 of (permalink) Old 03-28-2000, 09:50 AM
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Re: What gears come stock in 77 cj-7 with 258?

I would guess that it depends on what transmission is in it. My buddy's '78 which has the granny gear T18 has 4.10's in it. Is there any kind of tag on it? If you don't see one on the rear diff, check the front as they tend to get serviced less and chances are fewer that someone lost the tag. Not much help, am I?

post #3 of (permalink) Old 03-28-2000, 10:29 AM
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Re: What gears come stock in 77 cj-7 with 258?

This should tell you how to check for the gear ratio. Good Luck!

http://www.off-road.com/jeep/tech/axle/amc20.html

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post #4 of (permalink) Old 03-28-2000, 11:40 AM
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Re: What gears come stock in 77 cj-7 with 258?

My '77 w/ the T-150 3-speed has 3.54 which isn't great but beats 3.08. But check the tag to be certain.

post #5 of (permalink) Old 03-28-2000, 06:57 PM
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Re: What gears come stock in 77 cj-7 with 258?

I have a 78 that also came with the T-150 and 3:54's



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post #6 of (permalink) Old 03-28-2000, 07:12 PM
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Re: What gears come stock in 77 cj-7 with 258?

'77 T-150 and 3.54s also

post #7 of (permalink) Old 03-28-2000, 07:15 PM
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Re: What gears come stock in 77 cj-7 with 258?

My '79 CJ7 came stock with the 258, T150, and 2.73 gears.

post #8 of (permalink) Old 03-28-2000, 08:19 PM
 
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Re: What gears come stock in 77 cj-7 with 258?

77 304/T150
3.54 gears from the factory, no longer applicable

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post #9 of (permalink) Old 03-28-2000, 08:22 PM
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Re: What gears come stock in 77 cj-7 with 258?

my 79cj7 has 3:73's from the factory with a t-18/258

alex

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