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1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks Discuss the Early Eighties Bullnose Ford Truck

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  #1  
Old 06-28-2010, 10:57 PM
SoloAK SoloAK is offline
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Rear end gear ratio specs for 83 F250

Can anyone possibly help me with the rear end gear ratio for my F250? I've looked all over the place and can't track it down. The code is B6, but can't find anywhere that will give me the ratio. The rear end went out and I need to get another one, but can't until I find the gear ratio for it. Thank for any help.
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  #2  
Old 06-28-2010, 11:12 PM
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put down the code on the tag of the rear axle so we can identify it for you.
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Old 06-29-2010, 02:45 AM
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The info I have says B6 is a 3.73LS for a F150 ...

Is the B6 from your door sticker??

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Old 06-29-2010, 02:54 AM
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The chart I have gives B6 as a 3.55 limited slip for 83/84.

Is the tag still on the axle as FordNFishinLover mentioned?
The axle may not be the truck's original, so the door sticker might lead you in the wrong direction.
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Old 06-29-2010, 03:24 AM
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I'd be more likely to believe that then what I have ...

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  #6  
Old 06-29-2010, 05:30 AM
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B6 = 1983/84 F250 / Ford WFL 8.8" Rear Axle / 3.55-1 / Limited Slip / 4,500 lb. Rear Axle Capacity.

1983/89: The so-called Light Duty F250's used the Ford 8.8 / Without Limited Slip, the F250's Ford 8.8 is known as the WDR.

I just know that someone's gonna chime in and say there ain't no such thing. Since this subject has been brought up several times in the recent past...

Take a gander in the 1980/89 Ford Light Truck Parts Catalog = Text, Section 40, Page 10 of the Rear Axle Applications Charts, and you will see that there was.

If this truck was a so-called Heavy Duty F250, it could have either a Dana 60 or Dana 61.1.
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Old 06-29-2010, 06:38 AM
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ND brings up a very good point. I remember seeing the F250 8.8" axle many years ago. Most semi floaters I saw were the 10.5 though.
Does this truck have a large center that protrudes from the rear wheels, say 2-4", or just enough for the wheels center hole to fit over?

ND, does the F250 8.8 use the same rear axle bearing as the F150 8.8?
I bring this point up due to the fact that this member mentioned the rear axle was run with a low lube level, and if it uses the same bearing, it *could* be the cause of the whining noise they were asking about in another thread.
Of course, even if the axle is a full floating design, the whining could be from the rear wheel bearings.
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Old 06-29-2010, 09:20 AM
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B6= 83/84 3.55 4.50M Ford Limited Slip
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  #9  
Old 06-29-2010, 09:31 AM
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Quote:
Originally Posted by Franklin2 View Post
B6= 83/84 3.55 4.50M Ford Limited Slip
Just to translate for the OP, 4.50M = 4,500 LBS.
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1980 F-150 300 I6, C6 & 9" rearend. Cummins 5.9L/ NV4500 5 speed swap in the works
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Old 06-29-2010, 10:11 AM
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While the 10.25 (the 10.50 came in 97 and newer units) is the most common for the 85-96 250's, I do have in my possession an 8.8 axle under a 250 with 8 bolt wheels, so if anyone wants to doubt, I can snap pics...
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Old 06-29-2010, 10:14 AM
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Quote:
Originally Posted by fellro86 View Post
While the 10.25 (the 10.50 came in 97 and newer units) is the most common for the 85-96 250's, I do have in my possession an 8.8 axle under a 250 with 8 bolt wheels, so if anyone wants to doubt, I can snap pics...
My bad, I meant 10.25, but I hadn't got my 1st cuppa coffee yet....
Thanks for the clarification and confirmation.
Prior to ND mentioning that this critter *actually* existed, I thought I was misremembering or hallucinating......
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1980 F-150 300 I6, C6 & 9" rearend. Cummins 5.9L/ NV4500 5 speed swap in the works
1974 F100 Ranger XLT 390, C6 3.25 axle. Dad bought it new.
1983 Mazda RX7 1.1L Rotary.
1984 CRX 35 MPG go kart
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Old 06-29-2010, 03:43 PM
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Quote:
Originally Posted by fellro86 View Post
While the 10.25 (the 10.50 came in 97 and newer units) is the most common for the 85-96 250's, I do have in my possession an 8.8 axle under a 250 with 8 bolt wheels, so if anyone wants to doubt, I can snap pics...
Ohhh Please please please snap some pics, I gotta see that, and have proof, my Ford freak friends wouldn't believe me if I told them it existed.
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Old 06-29-2010, 10:16 PM
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Ok, I guess I don't have a 8.8, as it has a rear drain plug. It appears to be a Dana 44, without the floating hubs.


axle pic moved to my next response.


Click the image to open in full size.
Click the image to open in full size.
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Old 06-29-2010, 10:26 PM
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Darn it! the only pic I can see is the one of the 3 lug wheel........
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Old 06-29-2010, 10:34 PM
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I will separate it out for you...

Click the image to open in full size.
Click the image to open in full size.

Looks like I have a little more poison ivy to kill... lower right corner. I respond badly to it...
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Old 06-29-2010, 10:34 PM
 
 
 
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