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-   -   what happens if your front and rear end ratios are different? (https://67-72chevytrucks.com/vboard/showthread.php?t=331086)

willett 02-27-2009 11:19 PM

what happens if your front and rear end ratios are different?
 
can you do it within reason?

cdowns 02-28-2009 09:36 AM

Re: what happens if your front and rear end ratios are different?
 
with your front and rear wheels going at different speeds when you're in 4wd things wear and break quick

Longhorn321 02-28-2009 02:38 PM

Re: what happens if your front and rear end ratios are different?
 
You might have better luck with an answer if you post your question in "Drivetrain" instead of "Electrical".;)

Longhorn Man 02-28-2009 03:25 PM

Re: what happens if your front and rear end ratios are different?
 
good point. I moderate both pages, and that fact slipped my mind since it first got posted.
I'll move it, but actually I'll send it to the 4X4 section.

b454rat 02-28-2009 06:33 PM

Re: what happens if your front and rear end ratios are different?
 
Most factory 4wd's have different ratios front/rear. 4.09 front, 4.10 rear. The most extreme I've seen is the early bronco's, have a set that has 3.54s up front and 3.50 for the rear. Somewhere I've read as much as 3% difference between the two....

special-K 03-01-2009 05:48 PM

Re: what happens if your front and rear end ratios are different?
 
The idea is keep them as close as possible,like the same.

skchevota 03-01-2009 10:30 PM

Re: what happens if your front and rear end ratios are different?
 
Bad things happen....... Ok there is always some differance, just tires being more worn on one end will change the ratio, but yes, you want to keep them as close as posible so things dont bind up. when you turn in 4x4 you will have a tire that has to slip because the front and rear are traveling around a differant size radius.If you had you ratios off it would be doing this going forward all the time, some thinng will give. If it is close and you only drive it in the mud or snow it will be fine, if you are trying to run 3.73 and 4.10 on hard dirt or road, you better call a tow truck!!!!!

skchevota 03-01-2009 10:50 PM

Re: what happens if your front and rear end ratios are different?
 
opps, posted twice...

nvrsatisfied 03-06-2009 02:08 PM

Re: what happens if your front and rear end ratios are different?
 
like what he said^ if your some really soupy stuff allowing everything to spin quite freely your good to go..as soon as it grabs you better have a friend around to tow you home.....or dog leg it with what works. get the grear ratio as close as you can.

72 CustomCamper 03-06-2009 03:45 PM

Re: what happens if your front and rear end ratios are different?
 
I think my blazer has miss matched gears. Last week we had a good snow fall. I went out using 4x. The rear felt like it wanted to over run the front, and when I hit a dry spot the front would make a popping sound. The rear has been changed to a 12 bolt, so I'm thinking I have 3:42's in front and 3:73's rear. I'm going to try to find time to pull the diff covers and make sure this weekend...


Chuck

haysonj 03-06-2009 08:10 PM

Re: what happens if your front and rear end ratios are different?
 
I actually changed my rear to a 14 bolt corp so I could get the 4.09 gear in the back to match the dana 44 in front.


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