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

what gears I got?

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Old Jan 18, 2006 | 01:12 AM
  #1  
Caleb1's Avatar
Caleb1
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what gears I got?

I have an 84' f-150 2wd 6 cyl 4 speed od manual. 8.8 rear.
will someone please tell me what gears I got? thanks.
axle code B


Thanks.
 

Last edited by Caleb1; Jan 18, 2006 at 01:31 AM.
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Old Jan 18, 2006 | 04:15 AM
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There should be a number with the letter B. Here is the list I have.
Limited Slip:
Code Man Size GVW Gear Ratio
B2 Dana 60 5300 4.10
B3 Dana 5300 3.54
B4 Dana 5300 3.73
B5 Ford 5300 4.10
B7 Dana 3.73
B6 Dana 3.55
 
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Old Jan 18, 2006 | 05:45 AM
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If its an F150 with an 8.8 it should have a 3750lb load rating.

those numbers above are for 3/4tons and 1 tons.

3.08 open should be 18
3.55 open should be 19
3.08 LS is H8
3.55 LS is H9

or there should be a tag on the rear axle on one of the pan bolts that has all the info and axle ratio.

DT
 
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Old Jan 18, 2006 | 07:03 PM
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I have the same setup, with a 3.08 axle.
It turns 1600 rpm at 60 mph.
Do the math.
 
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Old Jan 19, 2006 | 08:55 AM
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It says b17...what is that?
 
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Old Jan 19, 2006 | 09:38 AM
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are you sure its not transmission code B (4speed overdrive) and axle code 17?
thats a 8.8 with 2.47s

nothing I have shows B17 in 80-86
 

Last edited by oldhalftons; Jan 19, 2006 at 09:42 AM.
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Old Jan 19, 2006 | 09:56 AM
  #7  
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Originally Posted by srercrcr
I have the same setup, with a 3.08 axle.
It turns 1600 rpm at 60 mph.
Do the math.
Yuck

Originally Posted by oldhalftons
are you sure its not transmission code B (4speed overdrive) and axle code 17?
thats a 8.8 with 2.47s
That would put you at 1650 RPM at 60 MPH with 30 inch tires........ Assuming a final drive ratio in 4th gear of 1:1 which, with an overdrive, its probably not 1:1, so your probably spinning less than that...

I thought I had it bad
 
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Old Jan 19, 2006 | 11:31 AM
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Thanks guys that's it. axle code 17. No wonder this thing slugs off the line....but it does get good gas mileage, though. But then I have to slip the clutch a little and I keep burnin 'em up. Oh, I have 27 by 9 tires.

Thanks guys.
 
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