i've got an '86 ford f150 4x4. how do I know what kind of rear axle and how many splines without actually opening the differential and counting?

 

Is there a cover plate on the back of the differential? If so, it's an 8.8"

Ford used both 8.8 and 9" rears in 86. If it's a 9" its a 31 spline.......at least that's what is in my 86 F150 4x4.

 

If you look on the frame behind the driver's side door, there should be a tag that gives all sorts of useful info...



(This is from my truck)

See below for most of the codes. My axle code was a 19 (not on the list) which turns out to be a "1983/86 Ford Rear Axle / 3.55-1 / Non Limited Slip / 3750 lb. Rear Axle Capacity" thanks to NumberDummy...


------------------------------------------------------------------------
Originally Posted by bd4martin
All straight out of the Ford Red Book


SERIAL NUMBERS
DESCRIPTION
1FTHF15FXCLA00001
IFT-Ford Motor Co. Truck Complete, 1FD-Ford Motor
Co. Truck incomplete, 1FC- Ford Motor Co. Truck Stripped
Chassis,
H-Hydraulic Brakes Class: A-Class A not greater than 3,000 lbs.,
B-class B 3,000-4,000 lbs., C-class C-4,001-5,000 lbs.,D-
class D 5,001-6,000 lbs., E-class E 6,001-7,000 lbs., F-class
F-7,001-8,000 lbs., G-class G 8,001-9,000 lbs.,
H-class G 8,501-9,000 lbs., J-class H 9,001-10,000 lbs.,
K-class 3 10,001-14,000 lbs.
F15-Model Series: F10-F100, F14-F150 4x4,F15-F150, F25-F250,
F26-F250 4x4, F27-F250 Chassis-cab, F28-F250 Chassis-cab 4x4,
F35-F350, F36-F350 4x4, F37-F350 Chassis-cab, F38-F350
Chassis-cab 4x4, U15-Bronco, X14-F150 SuperCab 4x4, X15-
F150 SuperCab, X25-F250 SuperCab, X26-F250 SuperCab 4x4
X35-F350 SuperCab
F-Engine code -4.2L V-8, E-4.9L I-6, F-5.0L V-8, G-5.8L V-8
Z-6.6L V-8, O-DSO, 9-4.9L I-6 LPG Conversion
X-Check digit, which varies
C-Model year, C-1982
L-Assembly Plant, see appendix
A00001-Numerical sequence of assembly


CERTIFICATION LABEL DSO CODE - See appendix

LOCATION
Serial number located on driver's side of dash, visible through the window and on Certification Label which is attached on
rear face of driver's door.

BODY CODES-The first two digits indicate trim color
and seat/material type code(see below) and the third digit
indicates back of cab Body Type:

3 Flairside Pickup
4 Styleside Pickup
8 Chassis-cab
M SuperCab Pickup
P SuperCab Chassis-cab


MODEL & GVW CODES
F-100 4,650
F-101 4,650
F-102 4,900
F-103 5,050
F-140 4x4 5,500
F-141 4x4 5,700
F-142 4x4 6,050
F-143 4x4 6,250
F-150 5,250
F-151 5,450
F-152 4x4 5,800
F-153 4x4 6,100
F-250 6,300
F-251 6,900
F-252 7,800
F-257 8,700
F-260 4x4 6,800
F-261 4x4 7,400
F-263 4x4 8,700
F-278 7,900
F-279 9,200
F-350 8,900
F-351 9,100
F-352 10,000
F-361 4x4 9,100
X-140 4x4 6,450
X-150 5,450
X-151 5,650
X-152 6,050
X-153 6,250
X-250 6,500
X-251 6,700
X-252 7,100
X-253 7,300
X-254 7,700
X-255 8,000
X-259 8,900
X-260 4x4 7,100
X-261 4x4 8,200
U-150 5,400(Bronco)
U-151 5,500(Bronco)
U-153 6,050(Bronco)
U-154 6,300(Bronco)


ENGINE CODES
F-SERIES
D - 255 c.i. V-8 2bbl
E - 300 c.i. I-6 1bbl 117hp
F - 302 c.i. V-8 2bbl 154hp
G - 351 c.i. V-8 2bbl 161-165hp
Z - 400 c.i. V-8 2bbl 167-177hp


TRANSMISSION CODES
F-SERIES
Four speed manual A
Four speed manual overdrive B
Three speed manual C
Four speed manual F
Three speed automatic (C-6) G
Three speed automatic (C-4) J
Three speed automatic (C-6) K
Three speed automatic (C-5) W
Three speed automatic (C-6) Z


REAR AXLE CODES
F-SERIES & BRONCO
2.47:1 H7,07
2.75:1 01,H3
3.00:1 C2,H4,02
3.25:1 H5,04,
3.33:1 B5,
3.50:1 H6,
3.54:1 B7,C7,D1
3.73:1 C6,D6
4.10:1 C1,D3,D7,


EXTERIOR COLOR CODES

F-SERIES/BRONCO
Black 1C
Silver Metallic 1G
Candyapple Red 2K
Maroon 2L
Light Blue 32
Medium Blue 34
Light Medium Blue 3F
Dark Blue Metallic 3L
Medium Blue Metallic 3P
Med. Dark Spruce Met. 4J
Medium Fawn Metallic 5A
Dark Caramel Metallic 5G
Light Fawn Metallic 5H
Light Fawn Metallic 5K
Dark Brown Metallic 5Q
Light Tan 6U
Pastel French Vanilla 6Z
Medium Spruce 74
Light Spruce Metallic 7B
Dark Pine Metallic 7M
Medium Fawn Metallic 82
Fawn 89
Dark Chamois Metallic 8A
Medium Bittersweet Met.
Medium Bittersweet Met. 8G
White 9A

INTERIOR TRIM CODES-F-SERIES

Black AA,CA,DA,GA,HA
Blue AB,CB,DB,GB,HB,NB
Red AD,CD,DD,GD,HD,ND
Spruce AR,CR,DR,GR,HR
Nutmeg AT,CT,DT,GT,HT,NT,
Fawn AU,CU,DU,GU,HU

BRONCO
Black AA,BA,DA,FA,GA
Blue AB,BB,DB,FB,GB
Red AD,BD,DD,FD,GD
Spruce AR,BR,DR,FR,GR
Nutmeg AT,BT,DT,FT,FT
Fawn AU,BU,DU,FU,FU
------------------------------------------------------

Hope this helps...

 

gots ya some xtra tyme on yer handz huh tommyboy

 

lol - no, I actually copied that from another guy's post. bd4martin was the guy who origionally posted it. Not sure if he typed all that in or not.