Axles, differentials
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Posting Guru
Joined: Jul 2008
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From: Blackwater, VA
dont forget she is turning 35 inch tires, go with the 4.10's.
as for the valley, get a can or 2 of engine degreaser and go to town in the valley spraying everything, then just stick the garden hose in there and it will all run out the drain in the back of the motor
as for the valley, get a can or 2 of engine degreaser and go to town in the valley spraying everything, then just stick the garden hose in there and it will all run out the drain in the back of the motor
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Joined: Dec 2008
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From: Page Az.
[quote=MissIndependent;6946372]lol...I borrow all my dad's stuff, and I have this feeling he wouldn't be impressed if/when he found out I used his shop vac on diesel fuel. the poor man is still trying to figure out where he went wrong with me...
I don't think he went wrong with you, I think its awesome.
I have 4:10s in my 94 with 35s would not have it any other way. On the other hand my 97 has 3:55 with about 32s and you have to run about 90 mph
to get the best mileage and power. It has a 4" lift and 35s in its future so it will get 4:10s soon
I don't think he went wrong with you, I think its awesome.
I have 4:10s in my 94 with 35s would not have it any other way. On the other hand my 97 has 3:55 with about 32s and you have to run about 90 mph
to get the best mileage and power. It has a 4" lift and 35s in its future so it will get 4:10s soon
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I didn't figure in the 35's, and if your going bigger in the future then 4.10's Biggest I've ran w/3.55's is 33's on my old 79 and it did well but kinda hard to compare to the diesel.
One thing to conisider is towing with a lot of lift and big tires, I know lots do it but I've never been a big fan of big drop hitches
Anyhow back to the axle swap
It's not hard to do, just don't cut corners. Swap time is the time for brake rebuilds, seals, brake lines, U bolts, U joints....$$$$$$$$$$$$$$$$ 
One thing to conisider is towing with a lot of lift and big tires, I know lots do it but I've never been a big fan of big drop hitches
Anyhow back to the axle swap
It's not hard to do, just don't cut corners. Swap time is the time for brake rebuilds, seals, brake lines, U bolts, U joints....$$$$$$$$$$$$$$$$
Lead Driver
Joined: May 2007
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From: Belair md
i have a front axle, no rear's.
as for drop hitch's i use a 6 inch drop on my truck with a 6 inch lift and 35's. it gets the job done but an 8 inch would be perfect, so 4 inch lift and 35's the 6 inch drop should be fine.
as for drop hitch's i use a 6 inch drop on my truck with a 6 inch lift and 35's. it gets the job done but an 8 inch would be perfect, so 4 inch lift and 35's the 6 inch drop should be fine.
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From: Blackwater, VA
ok, 4.10s is on the official list lol. how soon i can't say, because i think i can pick up a replacement diff for less than $100 and my priority right this minute is to restore 4wd 
while we're on the subject...i more or less understand what a gear ratio is, but what does it mean in practical terms, or what makes one better than the other?
while we're on the subject...i more or less understand what a gear ratio is, but what does it mean in practical terms, or what makes one better than the other?
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From: Page Az.
A ratio of 3.55 (numerically lower) means more top end speed less bottom end power, a 4.56 (numerically higher) means more off the line power but less top end speed. That is why when you start going with bigger tires you should install a lower gear ratio (numerically higher) to keep your low end power. 4.56 means just over 4 1/2 rotations of the drive shaft to one rotation of the rear axles
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From: Blackwater, VA
so just for my enlightenment...my stock axles would be a TTB Dana 50 in front and...10.25" Ford rear?
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From: Blackwater, VA
Posting Guru
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From: Long Island, NY
I have 4.10's with 30 inch tires and I hate it. At 70 MPH my RPMs are just above 2500 and the red-line is not much higher than that. It seems like the engine is screaming at those RPMs and I am sure it sucks up the fuel faster. I am sure I have enough low end power to pull a house up a cliff but I don't do any heavy towing so sooner or later I am going to get bigger tires or ditch the 4.10. I guess it all boils down to what you plan on doing with the truck.
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From: Page Az.
With 30" tires you probable wish you had something like 3.73 gears but she is running 35s like I am and most of the time 4.10s are just right, but there has been a few times 4.30s or even 4.56 gears would have been best.
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From: Blackwater, VA
any reason not to keep that kind of axle and just upgrade to 4.10s?
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From: Page Az.
It all depends on what you plan to do with the truck. If you are just doing light 4 wheeling the 50 will be fine, but if you going to be doing any serious 4 wheeling, mud bogging, sled pulling,etc its time to consider swapping in a dana 60 straight axle. The 50 can handle some abuse but needs to have an eye kept on it to make sure nothing gets loose or bends.
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From: Blackwater, VA
been offered a deal on a set of 4.10 gears out of a sterling rear on a 94 IDI. he's willing to put them in but hasn't done it too many times...i might be able to get other local help with that though. axle's the same even though its an IDI, yes? is that all i'd need? (i really have absolutely noooo idea what i'm getting myself into lol)
yep, light wheeling only for her, right now i ride shotgun for stuff like rock crawling...in a real Hummer the last trip...fun times!
yep, light wheeling only for her, right now i ride shotgun for stuff like rock crawling...in a real Hummer the last trip...fun times!