2 Different Ratios ??????????
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From: Racine WI
2 Different Ratios ??????????
Is it possible that i have 2 different gear ratios in the front and rear axles from the factory, the tag on the door isnt original to the truck someone replaced it b4 i got it so im trying to figure out which gear ratios i have, its a 75 F-250 Hi Boy and the only listing i can find for the front ratios is 4.55 and thats with the dana 6cf but the closest dana 60 rear is like 4.11 is this possibly what i have , thanks in advance
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From: Racine WI
2 Different Ratios ??????????
Ok i hope so it has super low gearing, why does it say "alert" under advance in my post does this mean someone alerted ken to my post ? did i do something bad on my post or something ?
Fleet Owner
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From: Creedmoor, North Carolina
2 Different Ratios ??????????
Otto, your dope had kicked in real good, and you typed it in. :-)
There is no edit message on the post, so you had to do it. Even if KP had added it, it would still have the edit message.
John
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[link:www.ford-trucks.net/users/jowilker|Club FTE since 01 01]
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66F100s Rule
In the cool still quite of night you can hear chevies rusting away.
There is no edit message on the post, so you had to do it. Even if KP had added it, it would still have the edit message.
John
jowilker
[link:www.ford-trucks.net/users/jowilker|Club FTE since 01 01]
[link:www.ford-trucks.net/users/jowilker/NCFTE.html|NC Truck Owners]
66F100s Rule
In the cool still quite of night you can hear chevies rusting away.
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2 Different Ratios ??????????
Hey John,
Thanks for the chuckle.... I needed that.
HEHEHE
HeavyMetal (Rod)
1977 F100 429CJ bored 30 over, Heads milled 30, edelbrock performer cam, intake, lifters, valve springs, Flat top forged pistons, polished and ported, Holley 750 Legacy, Hooker Super Comp. headers with dual Hooker Comp. exhaust and Hooker dual resonators, B&M C-6 racing tranny, with a TCI Breakaway 2600 flash stall converter, 9" rear with 2-72 gears.
Thanks for the chuckle.... I needed that.
HEHEHE
HeavyMetal (Rod)
1977 F100 429CJ bored 30 over, Heads milled 30, edelbrock performer cam, intake, lifters, valve springs, Flat top forged pistons, polished and ported, Holley 750 Legacy, Hooker Super Comp. headers with dual Hooker Comp. exhaust and Hooker dual resonators, B&M C-6 racing tranny, with a TCI Breakaway 2600 flash stall converter, 9" rear with 2-72 gears.
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2 Different Ratios ??????????
[font size="1" color="#FF0000"]LAST EDITED ON 19-Feb-01 AT 12:29 PM (EST)[/font][p]I was wondering about that myself. When I decoded my VIN number, it told me that I had the same ratios as well, 4.55 in the front, and 4.10 in the rear. I know they should be off a little, but that is off by quite a bit.
Also, the only information that I have gathered about the Dana6CF is that it is basically a Heavy Duty Dana 44.
Matt
1974 F-250 4x4 Highboy
Also, the only information that I have gathered about the Dana6CF is that it is basically a Heavy Duty Dana 44.
Matt
1974 F-250 4x4 Highboy
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From: USA
2 Different Ratios ??????????
[font size="3" color="#191979"]
Otto, I wrote this for a 2WD question, but it applies to 4x4's as well. Just do this for each axle:
There is a much easier way to determine axle ratio, as the steel tag on the diff cover often can be hard to read. Jack up only one rear wheel and rotate that tire exactly TWO revolutions and count how many times the driveshaft rotated - that's your ratio. Chalk marks on the brake drum & backing plates helps you count the revolutions easier. You must rotate one tire TWO revolutions, or both tires ONE revolution which is more difficult with an "open" differential.
For those with trac-locs, jack up both rear tires and rotate them ONE revolution and count the driveshaft revolutions.
The axle code off of the door VIN tag tells you what ratio axle came ORIGINALLY with the truck, but who knows if it has been changed in 25 years...
Art
Otto, I wrote this for a 2WD question, but it applies to 4x4's as well. Just do this for each axle:
There is a much easier way to determine axle ratio, as the steel tag on the diff cover often can be hard to read. Jack up only one rear wheel and rotate that tire exactly TWO revolutions and count how many times the driveshaft rotated - that's your ratio. Chalk marks on the brake drum & backing plates helps you count the revolutions easier. You must rotate one tire TWO revolutions, or both tires ONE revolution which is more difficult with an "open" differential.
For those with trac-locs, jack up both rear tires and rotate them ONE revolution and count the driveshaft revolutions.
The axle code off of the door VIN tag tells you what ratio axle came ORIGINALLY with the truck, but who knows if it has been changed in 25 years...
Art
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From: Racine WI
2 Different Ratios ??????????
Yeah in the 25 years the door has been changed which rendered the door tag useless it apears to be off a 78 f-150, and as far as the axle tag is concerned i can clearly see without crawling under there it is no longer there either, but like matty said the vin decoder in tech articles clearly states 1975 dana 6cf 4.55 so i dunno, but the tire turning method should work, the stupid little ford pick up red book i have doesnt even include front axle ratios and im sure the rear axle isnt a trac loc as it is a one wheel wonder oh well
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From: USA
2 Different Ratios ??????????
[font size="3" color="#191979"]
I thought the earlier 3/4 ton 4x4's had 4.10 as standard equipment and 4.56 as an option (until 1978 or so, when the 3.54 was used).
I suggest jacking one wheel, rotating it exactly two revolutions and counting the driveshaft revolutions. That procedure never lies.
Art
I thought the earlier 3/4 ton 4x4's had 4.10 as standard equipment and 4.56 as an option (until 1978 or so, when the 3.54 was used).
I suggest jacking one wheel, rotating it exactly two revolutions and counting the driveshaft revolutions. That procedure never lies.
Art