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  #16  
Old 05-24-2012, 10:19 PM
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real question is what are your plans? daily driver, weekend wheeler, or extreme offroad? This makes a difference, if its a daily driver id go 4.88 with the 7.3, if your gonna drive it local and offroad it hard id go 5.13 or 5.38. And dont forget the rear detroit locker,no need spending all that money and keeping that crap OEM limited slip and get stuck because of it
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  #17  
Old 05-25-2012, 02:35 AM
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Linne Linne is offline
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Quote:
Originally Posted by SuperDutyScaler View Post
real question is what are your plans? daily driver, weekend wheeler, or extreme offroad? This makes a difference, if its a daily driver id go 4.88 with the 7.3, if your gonna drive it local and offroad it hard id go 5.13 or 5.38. And dont forget the rear detroit locker,no need spending all that money and keeping that crap OEM limited slip and get stuck because of it

Actually I am now leaning towards 5.13, I came to think about our speed limints and here in Finland actually max speed with anything that is registered as truck has speedlimit 50mph, this is my daily driver but I do not want offroad features to suffer. And I do drive a lot on small city roads also.

But would there anything that would suffer like mpg on freeway/higway driving long distance with 5.13 gears? As I use my truck for business also not so much but If customer needs something moved with trailer then I try to help. Load on trailer is never more than a passanger car but the driving would mostly be highways in this case. This is a once a month thing maximum.
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  #18  
Old 05-25-2012, 07:46 AM
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Quote:
Originally Posted by Linne View Post
Actually I am now leaning towards 5.13, I came to think about our speed limints and here in Finland actually max speed with anything that is registered as truck has speedlimit 50mph, this is my daily driver but I do not want offroad features to suffer. And I do drive a lot on small city roads also.

But would there anything that would suffer like mpg on freeway/higway driving long distance with 5.13 gears? As I use my truck for business also not so much but If customer needs something moved with trailer then I try to help. Load on trailer is never more than a passanger car but the driving would mostly be highways in this case. This is a once a month thing maximum.
If your maximum speed is limited to 50 MPH, then I would consider the 5.38 gears.

Miles Per Hour: 50
Tire Diameter in Inches: 39.5
Axle Ratio: 5.13
Transmission High Gear Ratio: 0.71
RPM's: 1,551

Miles Per Hour: 50
Tire Diameter in Inches: 39.5
Axle Ratio: 5.38
Transmission High Gear Ratio: 0.71
RPM's: 1,626

Your 4R100 transmission has the following gear ratios (see link below):

1st Gear - 2.71
2nd Gear - 1.54
3rd Gear - 1.00
4th Gear - 0.71

https://www.fleet.ford.com/truckbbas...0/BBFSD00A.PDF

You can enter the gear ratios into the RPM Calculator (see link below) to determine the shift points with either the 4.88, 5.13, or 5.38 axle gears.

RPM Calculator

Also, you may want to purchase the SCT X3 tuner with custom tunes to alter the shift points of the transmission. I know... this mod stuff never ends! Welcome to the madness!
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  #19  
Old 05-25-2012, 09:48 AM
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Quote:
Originally Posted by Furian View Post
If your maximum speed is limited to 50 MPH, then I would consider the 5.38 gears.

Miles Per Hour: 50
Tire Diameter in Inches: 39.5
Axle Ratio: 5.13
Transmission High Gear Ratio: 0.71
RPM's: 1,551

Miles Per Hour: 50
Tire Diameter in Inches: 39.5
Axle Ratio: 5.38
Transmission High Gear Ratio: 0.71
RPM's: 1,626

Your 4R100 transmission has the following gear ratios (see link below):

1st Gear - 2.71
2nd Gear - 1.54
3rd Gear - 1.00
4th Gear - 0.71

https://www.fleet.ford.com/truckbbas...0/BBFSD00A.PDF

You can enter the gear ratios into the RPM Calculator (see link below) to determine the shift points with either the 4.88, 5.13, or 5.38 axle gears.

RPM Calculator

Also, you may want to purchase the SCT X3 tuner with custom tunes to alter the shift points of the transmission. I know... this mod stuff never ends! Welcome to the madness!
I was thinking exactly the same thing as I was reading itthat this mod stuff never ends
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  #20  
Old 05-25-2012, 04:20 PM
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Is there many different Dana 50s? or could this be the correct gear set for my front axle? Motive Gear D50-538 - Motive Gear Dana Ring and Pinions - Overview - SummitRacing.com
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  #21  
Old 05-29-2012, 04:21 PM
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Is there many different Dana 50s? or could this be the correct gear set for my front axle? Motive Gear D50-538 - Motive Gear Dana Ring and Pinions - Overview - SummitRacing.com

So does any one know anything about the gears I linked to? This Dana 50 is really SPACE for me I have only worked with D44 and D60 before.

Could that be the correct gears for my D50? they are pretty cheap so I would not mind buying one set for my D50 even if I know it will be swapped to a D60 one day
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  #22  
Old 05-29-2012, 05:00 PM
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I wish that I could help... I recommend contacting the two vendors listed below to determine the exact part #'s for your application.

Bronco Grave Yard:
Early Bronco Restoration Full Size Bronco Restoration Classic Ford Bronco Parts For Sale

Randy's Ring & Pinion:
Home Page
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  #23  
Old 09-09-2012, 07:56 AM
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I finally got the rockers under my truck, I still need to change the gears and put cut-out fenders on but this was an emergency tire change I did get a flat tire yesterday and had no other choice than to put these on.

Click the image to open in full size.

they run well but you really can feel that there is a bad need for new gears! I probably will go with 5.38s

I moved the front bumper also forward but I am going to build my own version of road armor bumper later.

Click the image to open in full size.

And without cut-out fenders there is almost no room to flex the rear axle

Click the image to open in full size.

I the front I only needed to modify the inner fenders so they comes more backwards, the only place where it rubs now is the white area on the fender lower inner corner where I'm pointing my finger...

Click the image to open in full size.
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  #24  
Old 09-09-2012, 10:58 AM
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Thanks for the update... It looks like the edge of tire was damaged as a result of the rubbing (last pic).
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  #25  
Old 09-09-2012, 04:57 PM
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Thanks for the update... It looks like the edge of tire was damaged as a result of the rubbing (last pic).
Yes I think it was from the rubbing
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  #26  
Old 09-09-2012, 07:48 PM
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Quote:
Originally Posted by Linne View Post
Yes I think it was from the rubbing
Those "cut-out" fender flares will take care of that issue. Your Super Duty looks awesome and I'm sure that you get a lot of looks in Finland!
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  #27  
Old 09-10-2012, 01:42 AM
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I know, I have only had problems to find those cut-out fenders for a reasonable shipping price, the fenders price is around $600 but pest price sofar for shipping to Finland is $880.

So I probably need to try find some one who I can pay to go get them in the US. and then try to find the cheapest shipping for me.
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  #28  
Old 09-10-2012, 02:48 AM
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I forgot to tell you guys that the tires also rubb the leaf springs when turning but it's only just before it's full turn so that will also go away when I only get the cut-outs so I can put -43 offset now I have -25,5.

If I put more negative offset before I get the cut-outs then it would rubb even more in flares when turning.
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  #29  
Old 09-10-2012, 07:44 AM
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As far as shipping, have you checked with the airlines? I don't know if you live near an international airport.
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  #30  
Old 09-10-2012, 04:01 PM
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Quote:
Originally Posted by Furian View Post
As far as shipping, have you checked with the airlines? I don't know if you live near an international airport.

I live about 60 miles from an international airport, and I have only checked with companies in the states and asked them what kind of shipping they can offer, and on ebay I have also checked
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Old 09-10-2012, 04:01 PM
 
 
 
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