axles or tcase

userbmx1315 · Oct 10, 2011

debating on weather i should regear my axles now or to reagear my dana 300 with the 4 to 1 kit.
my plans are to run 39.5- 42" tires

could someone help me with the final ratio?

kastein · Oct 10, 2011

Trying to improve street or offroad driving? sig says 5.13s in the axles already... can't go much further than that, 5.38s will improve your final ratio by 5% over 5.13s. D300 4:1 kit will give you a 53% improvement and you only have to mess with the case instead of two axles. On the other hand you'll be putting more torque on your driveshafts instead of keeping the torque multiplication further down the line.

http://www.grimmjeeper.com/gears.html

userbmx1315 · Oct 10, 2011

i will be adding 60/14 bolt. didnt think of the torque moving up. thanks

kastein · Oct 10, 2011

I only see gears down to 5.38 for those also. If you're after offroad torque not street gearing improvement I'd just go for the d300 kit, unless the axles you're installing aren't geared yet, then I'd do both since you're dropping cash on R&P sets anyways.

userbmx1315 · Oct 10, 2011

the axles are not regeared. stock 3.73. this is a trailered jeep

Lowrange2 · Oct 10, 2011

I leanred the hard way that stock axle gears and a 4:1 kit don't work so well. My Samurai has 6.5:1 in the t case and I had to gear the axles to 5:13 just to keep from destroying the tcase and ujoints. If you do it you'd better put ctms in your drive shaft and have one hell of a cross member.

userbmx1315 · Oct 10, 2011

guess i'll be regearing my axles. so expensive. gears and lockers and labor at 2grand

RCman · Oct 10, 2011

userbmx1315 said:
the axles are not regeared. stock 3.73. this is a trailered jeep

If this is the case without a doubt do the axles.

userbmx1315 said:
guess i'll be regearing my axles. so expensive. gears and lockers and labor at 2grand

If you can fabricate enough to get the axles underneath you can do the re-gear.

userbmx1315 · Oct 10, 2011

the labor is like 400 bucks. to me that kinda like insurance. most companys around here will back what they do.

i have done 1 regear successful and attempted a 9"

i have depth mics at work, is there a chart on the pinion depth with out guessing?

Johnnie Walker · Oct 11, 2011

There are specs for pinion depth.

RCP Phx · Oct 11, 2011

Johnnie Walker said:
There are specs for pinion depth.

Yeah,but very few people have the tool required to use the factory specs,plus most aftermarket ring/pinions DONT use the factory marking system.

axles or tcase

userbmx1315

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kastein

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userbmx1315

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kastein

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userbmx1315

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Lowrange2

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userbmx1315

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RCman

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userbmx1315

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Johnnie Walker

Piece of Fish!

RCP Phx

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