drivetrain identification

is there a way to identify which drivetrain components are in my 1986 by using the " vin " number???

No, but you can find out how it was originally geared from the safety sticker on the driver B post. It will list the axle code and from there you can find out what gears it was shipped with. However, if someone changed them that won't help. Another way is to look for a metal tag on one of the differential case bolts. It will give a code indicating what the gears are.

a third way is to jack the rear end up and turn the wheel one full revolution and count the number of times the drive shaft revolves, ie. 3 and a half turns of the drive shaft would be 3.54 gears. If you have a C6 transmission the indicator on the dash will be PNRD21 , If you have an AOD transmission it will be PNRDD1 the first D will have a circle around it.. If it is a stick shift, I don't remember what transmission was on the 86. Now we come to the transfer case, that is hard to describe, but it will be a NP208 (it has a fairly smooth case when looking at it from behind) or a Borg-Warner 1345 (which has a bunch of ribs along the surface when looked at from behind).

Good luck,

If you want confirmation about the components, take some pictures and post them including the safety sticker. Size then no bigger than 1024 x 768

yo,

As Seabronc advised; many owner/shops may have swapped components since new.

I made a mistake many years ago by telling someone to use the Driver's side label to ID their Rear Differential (axle, pumpkin type, etc.); turned out that a previous owner had swapped a Dana 60 in place of the stock 8.8

so... a run down;

DIFFERENTIAL:

8.8 Cover Gasket Depiction

Information, History, ID, pics, etc.; "...8.8” rear’s have a ten bolt inspection plate on the back that’s about 10” from the center of the top bolt to the bottom bolt center. The 8.8” first saw service in the 79 Crown Vic. and in 1980 for the F100/150..."

Source: by Kenneth C; 8.8 Information, History, ID, pics, etc. @http://www.badshoeproductions.com/rear.html

See 9" & 10.25"; as well as Dana 44 in 80 through 96 Broncos.

...

8.8 Fluid Change & RockCrusher Cover Installation pics in a 96

Source: by boss (bossind, Steve) @ http://www.supermotors.net/registry/15991/62378-4

Ford 10.25;

Installation in a 92

Source: by Zach K (BurnedB, BurnedBronco, Badassbronco)

Installation info & pics in a 95 @ 1025pig.jpg

Note that Zach wrote, "...center of the housing. the little protected electrical hookup is what controls the computer on speed sensing on 92+ trucks, and abs on all 87-96..." that is the VSS Sensor that I describe further below.

Source: by jam0o0 @



More @ http://www.supermotors.net/registry/9014/34102-4

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Dana 60 pic installed in a 91

Source: by DcSkater602

But the Dana 60 does not have provions for the Vehicle Speed Sensor (VSS) NOR the internal tone ring. So no ability to provide a 72,900 to 86,900 pulses per mile signal via the 4WABS module to the Programmable Speedometer/Odometer Module (PSOM); PSOM converts this signal to 8,000 pulses per mile. That signal is sent out to the PCM and then to:

E4OD, if equipped;

speed control amplifier, if equipped;

and overhead consoles compass/outside temperature display module, if equipped;

http://broncozone.com/uploads/monthly_01_2017/post-3816-0-78666900-1484065383.jpg

...

Dana 44 Solid Front Axle (SAS) Parts Diagram & Cover Depiction, Solid Axle in 78-79 @ http://www.broncocity.com/78_79_techpages/78_79_dana44.htm

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The front axle identification tag is a bar code label on the rear facing surface of the axle support arm, passenger side on Bronco, F-150 and F-250 4x4. For F-350, the label is located on the axle tube.

Dana 44 Axle Identification Tag @

http://www.diesel-dave.com/vehic/manual/stj/images/e3470k.gif

http://www.differentials.com/wp-content/uploads/2011/08/Dana-60.gif

Dana 60, 12 bolt pattern.

& Information @ http://www.4x4help.com/axle/aspecs/dana60.htm

Rear axles (8.8 have a metal tag secured under adjacent axle housing cover bolt heads listing Ford and Dana part numbers and the ratio. Front drive axles have a similar tag.

http://www.diesel-dave.com/vehic/manual/stj/images/e6469e.gif

Ford Axle Identification Tag

The plant code on the axle identification tag is to be used as the official service identifier.

The plant code for an axle denotes a particular design and specific ratio, and if it is a conventional or limited slip type. In addition, the plant code will not change as long as that particular axle assembly never undergoes an external design change. If, however, an internal design change takes place during the production life of the axle and that internal change affects service parts interchangeability, a dash and numerical suffix will be added to the plant code.

http://www.diesel-dave.com/vehic/manual/stj/images/e6470e.gif

Note that plant codes in the illustrations are identical, but the tag below shows a numeric. This means that as an assembly both axles are interchangeable; however, internally they are different. Therefore, each would require different internal service parts at service time.

...

Axle Codes, Bronco, Rear from 85 & 90 Owner's Manuals; here's the combined codes from 85 and 90 Bronco owner's manuals; this should cover most if not all codes out there: REGULAR: (Regular means "open" diff in this context) 13 4.11 14 3.00 16 3.50 18 3.08 19 3.55 LIMITED SLIP: H3 4.11 H4 3.00 H5 4.10 H6 3.50 H8 3.08 H9 3.55 If you have 3 digits on your axle code the first two digits are the rear axle code. Thus, looking at my pics above and cross-referencing the chart above my '90 came from the factory w/3.55's and Ford's sorry excuse for a limited slip differential, the Crap-Lok, er I mean Trak-Lok. Now, to know if the front diff is open or limited slip I'm ass-uming you have to look for a tag on the diff, as there is no "front axle code" on the door jamb sticker..." Miesk5 Note, I'll add that the axle code for some years (Maybe all) adds a 2 after the limited slip code if the front is also limited slip. So the code "H9" is a 3.55:1 limited slip rear axle only. "H92" would be a 3.55:1 limited slip on both axles. by ElKabong (Ken, El Kabong)

Source: by Ford & Helm via Keith L (TTB Blows, Bling-Bling) at http://web.archive.org/web/20020220012159/http://90bronco.homestead.com/axlecode.html

Slow to Load

see it for better layout than above

...

& for ratio; As Seabronc advised and

Ring & Pinion Calculator by counting teeth Source: by http://www.therangerstation.com/tech_library/Ring_Pinion_Calculator.html

..

Gear Ratio Determination; "...remove the differential cover or the 3rd member and count the number of teeth on the gears. Unfortunately, this can get messy. One somewhat easy yet very reliable way is to jack up the wheels, disconnect the driveshaft, rotate one wheel, and count how many revolutions the pinion yoke/****** makes. If you turn one tire & the other one either stays still while the pinion rotates, or the other one rotates backward while the pinion stays still, or something in between, then you've got an open diff or a very weak LSD (like a Trac-Lok with too many miles on it). In this case, you need to secure one wheel (perhaps by lowering the tire onto the ground), then you can figure your gear ratio by rotating the airborne tire TWO full rotations and counting the number of times the pinion rotates. 3.73 turns means 3.73 gears. If you only rotate the tire once, then 1.865 turns means 3.73 gears. If you turn one tire & the other one turns the same number of turns in the same direction, then you've got a good LSD or locker. In this case, you can just rotate the tires ONE full rotation and figure your gear ratio by counting the number of times your pinion rotates. 3.73 turns means 3.73 gears..." Read More

by Obi-Wan [/url

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TRANSMISSION, Automatic

Identification;

E4OD have 20 pan bolts; P-R-N-D-2-1 shifter pattern - Indicator pic by Chris A @ http://www.supermotors.net/clubs/superford/registry/media/117390

AOD have 14 pan bolts, see diagram & pic; P-R-N-(D)-D-1 shifter pattern, note, OD is actually a (D) - Indicator pic by trigger @ http://img.photobucket.com/albums/v663/RampageFSJ/a4-1.jpg

C6 have 17 pan bolts, see diagram & pic; P-R-N-D-2-1, shifter pattern - Indicator pic by miesk5 @ http://www.broncolinks.com/gallery_images/C6ShiftIndicatorpic.JPG

You can measure the transmission fluid pan to determine which transmission you have if identification information is not available. A 4R70W transmission pan has an overall length of just under 15 inches, while an E4OD pan is much larger, measuring about 20 inches in overall length.-

But a visual depiction is better!

C 6, AOD E4OD, 4R Pan Identification & Driver Side pic

Source: by technicalvideos @ http://www.technicalvideos.com/identify_my_transmission.phtml

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TRANSFER CASE;

Borg Warner Identification; "...The model number is cast into the rear housing, and sometimes stamped into an ID tag on a tailhousing bolt. This is a 93 EB Bronco1356 ESOF..." Source: by Steve83 (Steve, That dirty old truck) at

Borg Warner Identification; "...The model number is cast into the rear housing, and sometimes stamped into an ID tag on a tailhousing bolt. This is a 93 EB Bronco1356 ESOF..."



Source: by Stephen

Identification;

New Process (NP) 203, 205, 208; Borg Warner (BW) 1350, 1356 @

http://www.4wdhub.com/tcase/bw1345.html

Difference/Measurements, 1356 vs, NEW PROCESS 205 in a 94

some measurements I took from front face (mounting surface of case) to the end of the output shaft on front and rear of each

BW Front is -3 3/4"

bw rear is - 17 1/4"

205 front is + 3" (meaning, its forward of the mounting surface by 3")

205 rear is - 11 3/4

Source: by Damon H (Plug Ugly)

Atlas 4 Speed pics in a 96

Source: by GKR (Greg R) at http://www.supermotors.net/registry/12207/67797

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ENGINE

5.0 vs. 5.8 (EFI) Identification

They use different exhaust tubes to connect the EGR to the exhaust. The 5.0L gets exhaust from the lower intake, while the 5.8L gets exhaust from the passanger exhaust manifold. The positive ID is to measure the lower intake; 302 is aprox ~ 8 inches wide. 351 is aporx ~ 11 inches wide. The 5.0L uses squared ports and the 5.8L uses oval ports. If you get an intake from a junk yard it will have the matching fuel rail..."

by Ryan M (Fireguy50)

5.8 Parts Break-Out Diagram, External



Source: by Steve83 (Steve, That dirty old truck)

5.0 Parts Break-Out Diagram, External

5.0 Parts Break-Out Diagram

Source: by Steve83 (Steve, That dirty old truck)

of course; it could have 460 in htere..etc.

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Door Jamb Label (Data Plate, also referred to as the Patent Plate & the Warranty Plate) http://www.supermoto...a.php?id=219542

As an example, a pic for a 94



Source: by Adrianspeeder (The OJ Special, The Lariat, The Bronco) from this Plate; you could assume you have a rear diff code of 19 installed in his Bronco;

Basing on this;

Bronco, Rear from 85 & 90 Owner's Manuals; "Note, I'll add that the axle code for some years (Maybe all ) adds a 2 after the limited slip code if the front is also limited slip. So the code "H9" is a 3.55:1 limited slip rear axle only. "H92" would be a 3.55:1 limited slip on both axles. by ElKabong http://web.archive.o...m/axlecode.html

Source: by Ford & Helm via Keith L (TTB Blows, Bling-Bling) at homestead.com via web.archive.org

CODE 19 = 3.55 ratio

and that would be for a Ford 8.8 diff

Also, VIN Decoder Chart for 81-86 & 87-96 Bronco & Ford Trucks BEST!

http://www.lmctruck.com/icatalog/fd/full.aspx?Page=11

Source: by lmctruck.com

Build Sheet Information w/original build date, optional equipt., axle ratio, paint color, etc. & Build Sheet; Build Sheet pic in an 88

http://broncozone.com/index.php?app=core&module=attach&section=attach&attach_rel_module=post&attach_id=9106

Source: by Surveyor at Ford Bronco Zone Forums

Build Sheet Location Synopsis; Locations vary because it depended upon who threw it in the Bronco on the production line vs. those who took time to place it same place for 18 years: "...under the driver's or passenger side carpet, in the fiberglass top hidden behind the rear trim piece, driver's side in a 79 by Ziggy; under my carpet on the right side in the back in a 92 by M. Cardholder; under the carpet directly behind the front passenger seat, Under the cardboard spacer sheet/heat shield in an 88 by Dustball; under the drivers side of your front seat between the seat springs and the cushion in an 86 F 150 by Hoxviii; underneath the carpet under the drivers seat and another in the back end underneath the carpet in an 88 by Xris; Ive found them in the back seat front seat Passenger floor Board and head liner...Gently feel your back seat for paper under the vinyl...Same with the back and then under the seats...Possibly under passenger carpeting rubber mat in a 78 by F1rocco; under my rear deck carpet and padding, taped to the bed in an 89 by Buckin' 89Bronco...";

But I have never found the Legend for the sheet.

Transmission Code from Door Jamb Label;

See Code Information by Type, Vehicle, Engine, Ratios, Fluid, Shift Indicator Pattern, Code, Pan

http://www.fourdoorbronco.com/board/showthread.php?t=1244

Source: by Adrianspeeder

So, Trans code= E, that is an E4OD based on Adrian's Listing and Pan ID

(I have PAN ID info LINKS in my site under Transmission, Auto, E4OD and da 4R..

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Paint Color Code Location, Bronco, 85-96; "...1985 and Newer is on the driver door. There will be a white sticker. Towards the bottom of the sticker in the left hand corner it will say paint. This is deceiving because underneath of the word paint is the body style code. What you want is the 2 digits or letters above the word paint..."

http://www.levineautoparts.com/wherismypain.html

Source: by levineautoparts.com \--

what else?.. to be continued...

oh yeah, for Your 86, here is Dealer Brochure http://www.supermotors.net/registry/2742/73384"]http://www.supermotors.net/registry/2742/73384

Source: by Ford via Stephen