I have an 8.8 rear end and I am wanting to beef it up and I need to know the ratio the ID tag says: s808d 3 55 88 8m22: so does that mean it has a 3.55 ratio?

 

yep! thats what i have in my truck

 

Well I guess I can figure things out on my own thanks

 

I envy all you people who's tags haven't rusted to the point of not even having numbers anymore

 

Yupp Same here. The Driver side doorwell should have a sticker on mine says axle code 19

Im assuming its the 3.55

 

3.55 non-limited slip rear end.... same stuff i have I'll put this on here to help people out

There should be a number on "axle" on the sticker inside the driver side door well.



19 — 3.55 non-limited slip (Econoline, F-150)
18 — 3.08 non-limited slip (F-150)
17 — 3.31 non-limited slip (Econoline)
H9 — 3.55 limited slip (F-150, F-250)
B6 — 3.73 limited slip (F-150, F-250)
24 — 3.73 (Econoline)
32 — 4.10 (Econoline)
35 — 4.09 (Econoline)
34 — 3.73 (Econoline)
39 — 3.55 (Econoline)
52 — 4.10 (Econoline)
56 — 4.10 (Econoline)
81 — 4.63 (Econoline)
27 — 3.31 non-limited slip (F-250)
26 — 3.73 non-limited slip (F-250)
41 — 3.27 non-limited slip (Explorer/Mountaineer)
45 — 3.55 non-limited slip (Explorer/Mountaineer)
46 — 3.73 non-limited slip (Explorer/Mountaineer)
42 — 4.10 non-limited slip (Explorer/Mountaineer)
D1 — 3.27 limited slip (Explorer/Mountaineer)
D4 — 3.73 limited slip (Explorer/Mountaineer)
D2 — 4.10 limited slip (Explorer/Mountaineer)
84 — 3.45 non-limited slip (Ranger)
86 — 3.73 non-limited slip (Ranger)
87 — 4.10 non-limited slip (Ranger)
89 — 4.56 non-limited slip (Ranger)
F6 — 3.73 limited slip (Ranger)
F7 — 4.10 limited slip (Ranger)
92 — 3.08 non-limited slip (Ranger)
R5 — 3.55 limited slip (Ranger)
91 — 3.27 non-limited slip (Ranger)
96 — 3.73 non-limited slip (Ranger)
R6 — 3.73 limited slip (Ranger)"

 

I know mines a 3.08... Wish I had 3.55

 

I NEED 3.73s, but my 3.55s do damn good

 

i need a set of gears, i've got 3.55 limited slip in mine, but the spider gears are goin out or something and it doesn't work at all. i'm not sure what gears i need to go with, 4.88s or 4.56's

 

When you start making that big of a jump - you might need to check to see if you can still run the same housing with those ratios.

If you are going to be driving mostly under 55 mph those gear will get you there pretty quick, but not much more for extended periods of time. A 4.88 ratio with a 30 inch tire and 1:1 gear ratio would have the engine turning at 3800 rpms at 70 mph...Exxon would love you.