Body codes decoder

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Feb 10, 2004 | 01:38 PM

wiggy

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Rear diff code beak, please

Sifting through my local junl yard I came accross some broncos and f-series trucks. Axle code from the door vin tag. Just wondering if any of these rears are posi's?
15
16
17
19
H6
Thanks for the decoding help!

Mike

Feb 10, 2004 | 02:00 PM

n578md

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From: Allen, Tx

On F150/250/350 etc... mid 80's to current, open diffs always have a two number code and traction-lok (posi) will always have a letter and a number code. A few examples:

17 is a 3.31 open diff Ford 8.8 (F150, Bronco, 4.0L Ranger)
18 is a 3.08 open diff Ford 8.8 (F150, Bronco, 4.0L Ranger)
19 is a 3.55 open diff Ford 8.8 (F150, Bronco, 4.0L Ranger)

H5 is a 4.10 posi diff Ford 8.8 (F150, Bronco, 4.0L Ranger)
H7 is a 3.31 posi diff Ford 8.8 (F150, Bronco, 4.0L Ranger)
H8 is a 3.08 posi diff Ford 8.8 (F150, Bronco, 4.0L Ranger)
H9 is a 3.55 posi diff Ford 8.8 (F150, Bronco, 4.0L Ranger)

C1 is a 3.73 posi diff Ford/Sterling Visteon 10.5 (F250sd/F350SD SRW)
C2 is a 4.10 posi diff Ford/Sterling Visteon 10.5 (F250sd/F350SD SRW)
C3 is a 4.30 posi diff Ford/Sterling Visteon 10.5 (F250sd/F350SD SRW)
etc... etc... etc...

Last edited by n578md; Feb 10, 2004 at 02:31 PM.

Feb 10, 2004 | 02:33 PM

wiggy

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Quote:

Originally posted by n578md
On F150/250/350 etc... mid 80's to current, open diffs always have a two number code and traction-lok (posi) will always have a letter and a number code. A few examples:

17 is a 3.31 open diff Ford 8.8 (F150, Bronco, 4.0L Ranger)
18 is a 3.08 open diff Ford 8.8 (F150, Bronco, 4.0L Ranger)
19 is a 3.55 open diff Ford 8.8 (F150, Bronco, 4.0L Ranger)

H5 is a 4.10 posi diff Ford 8.8 (F150, Bronco, 4.0L Ranger)
H7 is a 3.31 posi diff Ford 8.8 (F150, Bronco, 4.0L Ranger)
H8 is a 3.08 posi diff Ford 8.8 (F150, Bronco, 4.0L Ranger)
H9 is a 3.55 posi diff Ford 8.8 (F150, Bronco, 4.0L Ranger)

C1 is a 3.73 posi diff Ford/Sterling Visteon 10.5 (F250sd/F350SD SRW)
C2 is a 4.10 posi diff Ford/Sterling Visteon 10.5 (F250sd/F350SD SRW)
C3 is a 4.30 posi diff Ford/Sterling Visteon 10.5 (F250sd/F350SD SRW)
etc... etc... etc...

Sorry forgot to mention it was late 70's ranger with the H6. I am pretty sure it isn't a mid 80's. Might have to run back to see. I am sure that it has a 9 inch and not 8.8.

Feb 10, 2004 | 04:58 PM

n578md

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From: Allen, Tx

Sorry, I have no data on models that old. Only 1987-current.

Feb 11, 2004 | 05:29 PM

wiggy

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Body codes decoder

I picked up a rear today. It is a posi. How do I figure out what the ratio is?
The door tag reads year 1981
2FTDF14G4BCB02376

133 f141 cb4 k h6 2dsl

I double checked the axle code H6.

Thanks for your help!

Feb 15, 2004 | 09:49 AM

wiggy

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81 F150 rear axle code "H6"????

I cannot find any documentation on what an axle code of H6 is. It is out of a 1981 F150 "Ranger". I triple checked the ratio on the tag and it says H6. From what I have found in a 86-90 model it is a LS 3.50 ratio. But cannot find out for the 81. Any help?

Mike