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4.10 gear swap?

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Old 05-05-2013, 01:07 AM
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RareColorRam1995 RareColorRam1995 is offline
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Default 4.10 gear swap?

Hey all, sorry for the hiatus, been working on some truck issues. So, after a new tranny, new driveshaft (u joints with grease fittings ) I've decided to try and help my transmission out a bit and gear my 01 1500 4x4 lower. It's got 3.55s in it, id like to know what all I need to acquire to put 4.10s in it. Also, about what RPMs will a cruising speed be? Any negative side effects? (Gas mileage is not a negative side effect for me, because the truck already gets 10 at most due to 6 inch suspension lift and 35s)

EDIT: I'm asking about cruising speed RPMs because someone told me they would be about 3250-3750 with 4.10s)
Also, would an even lower gear be better? Perhaps 4.56s?
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Last edited by RareColorRam1995; 05-05-2013 at 01:27 AM..
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Old 05-05-2013, 10:17 AM
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How do you use your truck?

More city or more hwy?
Do you tow?
What are your hwy speeds limits?
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1996 1500, Built 5.9, 7" suspension lift, Dana 60's installed, 241DLD xcase swap, xcase indexing ring, long-arms, and more. DF May 2013 ROTM, DF photo of the week Oct/11/2013
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Old 05-05-2013, 10:58 AM
SilverSS SilverSS is offline
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Here's a chart for you.
http://www.ringpinion.com/calculators/calc_rpm.aspx

The o/d in the trans is .69- this chart has .7 which will be pretty close. With 4.10's @ 60 mph with o/d you'd be @ 1650 rpm; with 4.56's 1840 rpm. Turn o/d off @ 60 it would roughly be 2700 rpm with 4.56's, 2400 with 4.10's. Probably a little lower due to the t/c locking up. Personally I like a lot of gear especially with an o/d so I'd probably go 4.56's .
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Old 05-05-2013, 11:15 AM
getdown78 getdown78 is offline
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Yea be prepared to either buy a tool or make it for the side adjusters ! I am gonna make one ! And i can't get the center pin out so i think i am gonna buy another rearend and put the 4.56s in it !
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Old 05-05-2013, 01:38 PM
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Silver, I was looking at Randy's, and I believe I found what I need for the rear diff, but I can't find the 4.56s for the front Dana 44.
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Old 05-05-2013, 01:45 PM
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& I use my truck on highways, no towing, some mild mudding.
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Old 05-05-2013, 05:02 PM
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What matches 35s? 4.56? It'd be like stock

I think 33s are 4.10s
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Old 05-05-2013, 06:40 PM
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http://www.ringpinion.com/DiffWizard.aspx

I found them on there. I might even consider 4.88's if you ever might go a little taller. With 35's you're looking at right around 2000 rpm @ 60 in o/d.
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Old 05-05-2013, 07:45 PM
spun360 spun360 is offline
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in the frt i think you need thick cut 4.56 to fit the d44. in the back the 4.56 need some coaxing to get it in there. 4.88s will they fit a corporate 9 1/4? and they may need to be thick cut as well.
just something to consider/ the thicker gears are usually noisier/ whine.
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Old 05-05-2013, 10:27 PM
Arde Arde is offline
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Quote:
Originally Posted by Ham Bone View Post
What matches 35s? 4.56? It'd be like stock

I think 33s are 4.10s
I have 3.90 gears and 33s and run 1800 at 60 in OD and a shade over 2000 at 70 in OD if that's any help.
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Old 05-05-2013, 10:27 PM
 
 
 
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