Gear mismatch front to rear

yankster · Jul 20, 2017

Gear mismatch front to rear, how much is too much for trail rig with no street use?
5.38:1 and 5.43:1 are the gears in question.

muddinmetal · Jul 20, 2017

yankster said:
Gear mismatch front to rear, how much is too much for trail rig with no street use?
5.38:1 and 5.42:1 are the gears in question.

That is fine. You will never notice that

TBItoy · Jul 20, 2017

5.38/5.43 is very common in D44/9" combos

gottagofast · Jul 20, 2017

What they said... prolly not even notice on the street....

paradisepwoffrd · Jul 20, 2017

Re:

I've actually heard of folks running a slightly higher ratio up front. They say it helps the rig climb and turn better.

It's not much but a friend ran yota axles with 4.10 rear & 3.90 front. He felt like it drive better after the 3.90s.

Bebop · Jul 20, 2017

I head the same thing.

Also heard that it helps going downhill. The rear axle will drag the rig and help keeping it straight.

Rockwells607 · Jul 21, 2017

Anyone think going 100mph will show its head more ? The 5:43 would be in the front and 5:38 in the back. High 9 with 10" ring out front and 14bolt in the back

squeak12 · Jul 21, 2017

The difference in 5.38 and 5.42 is less than 1%. I would be willing to bet you could see that much difference in just by having various tire pressures.

Beerj · Jul 21, 2017

Rockwells607 said:
Anyone think going 100mph will show its head more ? The 5:43 would be in the front and 5:38 in the back. High 9 with 10" ring out front and 14bolt in the back

100 mph on dirt? I bet there's so much slippage and what not going on that you could have even more difference and not notice it. Though, like others mentioned, it would probably be even better if the front tires moved a little faster than the rear. I imagine it would keep the ass end from kicking out a little better.

BUG-E J · Jul 21, 2017

squeak12 said:
The difference in 5.38 and 5.42 is less than 1%. I would be willing to bet you could see that much difference in just by having various tire pressures.

Yeah I was gonna say just run a couple extra pounds in 2 of the tires if you were that worried.

A Ford · Jul 21, 2017

Works great in the mud. Most of the really fast drag guys do it. Helps keep the truck straight.

Elliott · Jul 21, 2017

I've ran that gear setup in the yellow jeep and couldn't tell there was any difference at all.

Rockwells607 · Jul 25, 2017

It's for an Ultra 4 car , that's why I asked about that speed

44BRAND · Jul 27, 2017

I run a 4:38 in the front and a 4:30 in the rear. Toyota axles. Didn't plan it that way, broke the rear 4 :38, my cheap ass found a 4:30 and crammed it in there. Been on 4 rides, Zero issues so far. Welded both ends and on 39 reds, I don't feel any binding at all. I say go for it.