what will the main differences be. i know i would have better towing and off of the line power with the 4.10 but how bad would my fuel economy suffer?? is there a ratio in between that would work..
im just looking for another power edge

 

It really all depends on what you want to use the truck for.

 

What are the benefits of 4.30 gears? I have to double check but I believe thats what I've got.

 

The taller your tires, the taller the gear ratio you need to even it out for the trans. Or if you just want to pull houses not necessarily on the highway, or spring off the line like a gasser, then taller gears are for you. LOL

 

as I understand it, they only make 4.30's for the rear end. If you have 4x4, the dana 50 (earlier models) and 60 jump from 4.11 to 4.56.

 

This is my VIN:

1FTNX21F72EC38594

Which sequence tells me my gear ratio?

 

I think you need to look at the tag on your rear

to find out the code..

 

I thought your VIN number will tell you what gear ratio you have?

smart @$$ lol

 

I don't think the VIN will tell you but the door tag also has the info for the gear ratio also.

 

Ok well I looked at my rear end. What numbers tell you the gear ratio? I feel like dumb@$$ since I can't figure this simple thing out lol

 

Look on your tag on the inside door for the axle number. Then google "Ford Axle Codes". Mine says F2, which is the 4.10. I love it for towing. I pull a 15K horse trailer, and it really does the job. As far as mileage, I get about 15.5 to 16.5 when not pulling, and about 10 when I pull. I guess the only thing I don't like about the 4.10 rear end is the higher RPMs you have to run at on the hiway. But they are fantastic for pulling, and I'm glad I've got 'em.

 

The door tag (in the driver's door jamb) under where it says "AXLE" probably says "C1" or "31". C1 = LS 3.73s, 31 = open 3.73s.

 

Axle Type
31 — 3.73 non-limited slip, F-250/Excursion
C1 — 3.73 limited slip, F-250/Excursion
32 — 4.10 non-limited slip, F-250
C2 — 4.10 limited slip, F-250/Excursion
33 — 4.30 non-limited slip, F-250
C3 — 4.30 limited slip, F-250/Excursion
36 — 4.56 non-limited slip, F-250
C6 — 4.56 limited slip, F-250
41 — 3.73 non-limited slip, F-350 (single rear wheels)
D1 — 3.73 limited slip, F-350 (single rear wheels)
42 — 4.10 non-limited slip, F-350 (single rear wheels)
D2 — 4.10 limited slip, F-350 (single rear wheels)
43 — 4.30 non-limited slip, F-350 (single rear wheels)
D3 — 4.30 limited slip, F-350 (single rear wheels)
46 — 4.56 non-limited slip, F-350 (single rear wheels)
D6 — 4.56 limited slip, F-350 (single rear wheels)
61 — 3.73 non-limited slip, F-350 (dual rear wheels)
F1 — 3.73 limited slip, F-350 (dual rear wheels)
62 — 4.10 non-limited slip, F-350 (dual rear wheels)
F2 — 4.10 limited slip, F-350 (dual rear wheels)
63 — 4.30 non-limited slip, F-350 (dual rear wheels)
F3 — 4.30 limited slip, F-350 (dual rear wheels)
66 — 4.56 non-limited slip, F-350 (dual rear wheels)
F6 — 4.56 limited slip, F-350 (dual rear wheels)
81 — 3.73 non-limited slip, F-350 Chassis Cab, narrow frame (dual rear wheels)
E1 — 3.73 limited slip, F-350 Chassis Cab, narrow frame (dual rear wheels)
82 — 4.10 non-limited slip, F-350 Chassis Cab, narrow frame (dual rear wheels)
E2 — 4.10 limited slip, F-350 Chassis Cab, narrow frame (dual rear wheels)
83 — 4.30 non-limited slip, F-350 Chassis Cab, narrow frame (dual rear wheels)
E3 — 4.30 limited slip, F-350 Chassis Cab, narrow frame (dual rear wheels)
86 — 4.56 non-limited slip, F-350 Chassis Cab, narrow frame (dual rear wheels)
E6 — 4.56 limited slip, F-350 Chassis Cab, narrow frame (dual rear wheels)
88 — 4.88 non-limited slip, F-350 Chassis Cab, narrow frame (dual rear wheels)
EW — 4.88 limited slip, F-350 Chassis Cab, narrow frame (dual rear wheels)
G3 — 4.30 limited slip, F-450 Chassis Cab
73 — 4.30 non-limited slip, F-450 Chassis Cab
78 — 4.88 non-limited slip, F-450 Chassis Cab
G8 — 4.88 limited slip, F-450 Chassis Cab
75 — 5.38 non-limited slip, F-450 Chassis Cab
G5 — 5.38 limited slip, F-450 Chassis Cab
GW — 4.10 limited slip, F-450 Chassis Cab
98 — 4.88 non-limited slip, F-550 Chassis Cab
K8 — 4.88 limited slip, F-550 Chassis Cab
95 — 5.38 non-limited slip, F-550 Chassis Cab
K5 — 5.38 limited slip, F-550 Chassis Cab
KW — 4.10 limited slip, F-550 Chassis Cab

 

Excellent post Ray! I'll have to check out my door sticker when I go outside next. Reps to ya Ray!

 

My Aussie f truck has no codes on the door. but I still have the stickers on the axle
Rear 2C3D-4W063 BC
Front 3C3D-3001 BA what ratio's do I have ?