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Old June 3rd, 2010, 02:20 PM   #1
Jeepaholc92
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Gear ratio help...

bout a new truck but think the ratio's dif. than what it should be...how can i figure out what the true ratio is?
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Old June 3rd, 2010, 02:57 PM   #2
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So you bought a new truck, or you bought a truck that is just new to you?


What makes you think it has a ratio other than what it should?
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Old June 3rd, 2010, 08:25 PM   #3
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What truck?
What axles?
transmission?
tire size?
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Old June 4th, 2010, 12:09 AM   #4
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naw...brand new. standard 4 speed auto. not sure on tire size. here's the thing, it's supposed to be a 3.23 axle which doesn't come with a possi or ltd. slip. however when i got to "playin" both wheels spun. i know that if the correct axle wasn't in the right spot at the right time the next one goes in, with gm. so........... i wanna see if its truely the 3.23 or one of the higher ratio's.
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Old June 4th, 2010, 07:59 AM   #5
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Not saying its impossible to have a different ratio, but an open diff with equal traction at both tires will do exactly that.
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Old June 4th, 2010, 04:21 PM   #6
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Quote:
Originally Posted by Jeepaholc92 View Post
i know that if the correct axle wasn't in the right spot at the right time the next one goes in, with gm. so............

Umm, no.


Did you crawl underneath and look at the tag on the axle? That will tell you.

Did you post what was asked, like tire size? no. Didn't even say way it was, other than 'naw'.

Guessing the truck in your avatar?
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Old June 6th, 2010, 01:21 AM   #7
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Quote:
Originally Posted by Jeepaholc92 View Post
naw...brand new. standard 4 speed auto. not sure on tire size. here's the thing, it's supposed to be a 3.23 axle which doesn't come with a possi or ltd. slip. however when i got to "playin" both wheels spun. i know that if the correct axle wasn't in the right spot at the right time the next one goes in, with gm. so........... i wanna see if its truely the 3.23 or one of the higher ratio's.

i answered it right there but.... i didn't see the tag upon first look *which was just a glance* i'll have to crawl right under it tomorrow
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Old June 6th, 2010, 06:03 AM   #8
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Quote:
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i answered it right there but.... I didn't see the tag upon first look *which was just a glance* i'll have to crawl right under it tomorrow
what model truck is it?
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Old June 6th, 2010, 08:19 AM   #9
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what model truck is it?
its a naw, brand new. Duh.
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Old June 6th, 2010, 08:22 AM   #10
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If its a chevy, 2wd, with a 4L60e, and a tire around 31" tall, then you'd have engine speeds of:

MPH-- 1 ---2 --- 3 --- 4
5- -556 -307- -182 -127
10 1112 -614 -363 -254
15 1668 -921 -545 -382
20 2224 1228 -727 -509
25 2780 1535 -908 -636
30 3336 1842 1090 -763
35 3892 2149 1272 -890
40 4448 2456 1454 1017
45 5004 2763 1635 1145
50 5560 3071 1817 1272
55 6116 3378 1999 1399
60 6672 3685 2180 1526
65 7228 3992 2362 1653
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Old June 6th, 2010, 10:48 AM   #11
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2010 gmc sierra work truck 4.3 vortec. and yeah those engine speeds sound bout right
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Old June 6th, 2010, 10:49 AM   #12
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Quote:
Originally Posted by Haggar View Post
its a naw, brand new. Duh.
and quit dirtyin up my thread, contribute or just stop postin
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Old June 6th, 2010, 12:12 PM   #13
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Quote:
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and quit dirtyin up my thread, contribute or just stop postin
quit dirtyin up your thread? I told you exactly what to post, and you didn't, then we showed you exactly the engine speeds you should be seeing if you actually have the gears that you should.

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Old June 6th, 2010, 12:35 PM   #14
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you sould like a whiney little shit to man kid. people are trying to help you and you bitch cause they are asking for more info.


stop being a whiney little bitch
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Old June 6th, 2010, 01:16 PM   #15
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Quote:
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and quit dirtyin up my thread, contribute or just stop postin
After you learn how to spell, learn to give people the information they ask for when they are trying to help you.
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Old June 6th, 2010, 02:22 PM   #16
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when i tried answering your question's initially it was 1 in the morning and pouring, kinda a pain in the ass to go check shit in the rain and at that time of night. you guys jumped on me before i even got to check it. thanx for the help and lack there of *boggin machine*
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Old June 6th, 2010, 03:49 PM   #17
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Quote:
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when i tried answering your question's initially it was 1 in the morning and pouring, kinda a pain in the ass to go check shit in the rain and at that time of night. you guys jumped on me before i even got to check it.
Did you really need to go outside to tell us what make and model truck it was that you just bought?
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Old June 6th, 2010, 03:51 PM   #18
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Quote:
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Did you really need to go outside to tell us what make and model truck it was that you just bought?
God, he already told you it was new! What more do you want from him?!
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Old June 9th, 2010, 03:12 PM   #19
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Quote:
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Did you really need to go outside to tell us what make and model truck it was that you just bought?
no but i did for tired size and axle tag and what not
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Old June 13th, 2010, 09:41 AM   #20
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well since no one else suggested it just look in the glove box for the RPO tag. find the one that matches these
GU2 2.73
GU4 3.08
GU5 3.23
GU6 3.42
GT4 3.73
GT5 4.10
G80 locking rear differential
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