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Old 10-17-2013, 08:54 AM   #1
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Ford 8.8 gearing question

I found a pull and pay salvage here in my area and was wondering if there is an easy way to tell what gears are in a 99 or 98 Exploder? Like a tag or something.

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Old 10-17-2013, 10:16 AM   #2
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Bump?

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Old 10-17-2013, 12:45 PM   #3
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Look in my 8.8 build in my signature - all the details you need are right there.
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Old 10-17-2013, 12:46 PM   #4
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Tag will be attched to one of the diff cover bolts will say 4.10 or whatever. If anywhere on one of the tags says LS it has a limited slip also. good luck.
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Old 10-17-2013, 04:50 PM   #5
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Thanks guys!!
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Old 10-17-2013, 11:02 PM   #6
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The tags are coded here is bunch of info to identify an 8.8 to include measurements for width. Take a look at his info copy to a word document print and carry with you when you check them out and get what you want the first time.

Look at the diff plate:
Specs:
Code Capacity Ratio
43 Open 3200 3.08
41 Open 3200 3.27
42 Open 4.10
46 Open 3.73
45 Open 3200 3.55
D4 Limited Slip 3200 3.73
D2 Limited Slip 4.10
L73 Limited Slip 3.73
L - Limited Slip Differential
C - Conventional Differential






Semi-interesting measurements of the stock D35 on my YJ and the Ford 8.8" are as follows:
Measurement

Dana 35


Ford 8.8"


Width between wheel mounting surfaces
60.5"
59.75"
Pinion offset to right of center
3/4"
2-3/16"
Pinion length, tube center to U-joint center
11.5"
11-5/8"
Pinion height, U-joint center below tube center
1-7/8"
1-7/8"
Diff cover distance behind tube center
4-3/8"
4-3/4"
Bottom of diff housing below tube center
5"
5-7/8"
Disc brake rotors
N/A
11.25 x 7/16"
Drum brake shoes
9 x 2.5"
7.25 x 1.25" (e-brake)
Distance between spring perches (o/c)
40.5"
39-1/4"
Tube diameter
2.5"
3.25" (neck down to 2.75")
Axle shaft diameter
1.16" 27-spline
1.31" 31-spline
Clearance under diff w/33x9.50 BFG MT's
10.25"
9-3/8"
Shock eye below tube bottom
2.5" (center), 3.25" (bottom)
flush
Shock length at rest
20.75"
20"
Remaining shock compression at rest
4.75"
4"

Since the 8.8's tube diameter is 3/4" larger than the D35, your rear end will probably either gain (SOA) or lose (SUA) 3/8" of lift height after the axle swap. In my case, my old D35 spring perches sat about 3/8" taller than the stock Exploder spring perches that I used on the 8.8, so it all evened out. YMMV.

Make sure it is an 8.8 not a 7.8 I think out of a Ranger.
Attached Thumbnails
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Name:	8.8 ID TAG.jpg
Views:	34
Size:	29.0 KB
ID:	441257  
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Old 10-18-2013, 06:04 AM   #7
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Quote:
Originally Posted by jokerchief462 View Post
The tags are coded here is bunch of info to identify an 8.8 to include measurements for width. Take a look at his info copy to a word document print and carry with you when you check them out and get what you want the first time.

Look at the diff plate:
Specs:
Code Capacity Ratio
43 Open 3200 3.08
41 Open 3200 3.27
42 Open 4.10
46 Open 3.73
45 Open 3200 3.55
D4 Limited Slip 3200 3.73
D2 Limited Slip 4.10
L73 Limited Slip 3.73
L - Limited Slip Differential
C - Conventional Differential






Semi-interesting measurements of the stock D35 on my YJ and the Ford 8.8" are as follows:
Measurement


Dana 35


Ford 8.8"



Width between wheel mounting surfaces
60.5"
59.75"
Pinion offset to right of center
3/4"
2-3/16"
Pinion length, tube center to U-joint center
11.5"
11-5/8"
Pinion height, U-joint center below tube center
1-7/8"
1-7/8"
Diff cover distance behind tube center
4-3/8"
4-3/4"
Bottom of diff housing below tube center
5"
5-7/8"
Disc brake rotors
N/A
11.25 x 7/16"
Drum brake shoes
9 x 2.5"
7.25 x 1.25" (e-brake)
Distance between spring perches (o/c)
40.5"
39-1/4"
Tube diameter
2.5"
3.25" (neck down to 2.75")
Axle shaft diameter
1.16" 27-spline
1.31" 31-spline
Clearance under diff w/33x9.50 BFG MT's
10.25"
9-3/8"
Shock eye below tube bottom
2.5" (center), 3.25" (bottom)
flush
Shock length at rest
20.75"
20"
Remaining shock compression at rest
4.75"
4"

Since the 8.8's tube diameter is 3/4" larger than the D35, your rear end will probably either gain (SOA) or lose (SUA) 3/8" of lift height after the axle swap. In my case, my old D35 spring perches sat about 3/8" taller than the stock Exploder spring perches that I used on the 8.8, so it all evened out. YMMV.

Make sure it is an 8.8 not a 7.8 I think out of a Ranger.
This is Awesome!! Thanks.
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Old 10-18-2013, 06:12 AM   #8
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So is the tag for a 7.8?
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Old 10-18-2013, 10:00 AM   #9
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If it is in an Explorer it should be an 8.8. The notes I posted give measurements take a tape measure to the yard to be sure.
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Old 10-18-2013, 10:03 AM   #10
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Here is a pictute to help ID the differential by the cover. It is handy.
Attached Thumbnails
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Name:	axlechart.jpg
Views:	433
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ID:	442018  
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Old 10-18-2013, 10:31 AM   #11
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Thanks!

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