4:10 gears for 86 k10

[Rjckey]

Don’t know much about gearing but I will be putting at least 35in tires on a 4inch lift k10, looking for recommendations on what companies make good 4:10 gears.

 

[Edelbrock]

You installing a locking diff? If it were me, I would just get a complete junk yard axle that has a factory LSD. Is your rig a 4x4?

 

[Frankenchevy]

OP said k10, so 4x4.

If you aren’t doing the work yourself, I’d find the shop that’s doing it first. They’ll have a supplier they like to use that should have a few options. That way there are less questions if they need to warranty the work.

Otherwise, there are several options that’ll work manufacturer-wise.

 

[Rjckey]

OP said k10, so 4x4.

If you aren’t doing the work yourself, I’d find the shop that’s doing it first. They’ll have a supplier they like to use that should have a few options. That way there are less questions if they need to warranty the work.

Otherwise, there are several options that’ll work manufacturer-wise.

I’ll be doing the work myself

 

[Rjckey]

You installing a locking diff? If it were me, I would just get a complete junk yard axle that has a factory LSD. Is your rig a 4x

Rigid axle seems to make a pretty decent priced one just don’t know how reliable that brand is

 

[nvrenuf]

@Rjckey do you have an overdrive transmission? If yes, I'd go with 4.56's (I used this combo in my old crew cab, it drove great). If you do not have overdrive, 4.10's are a little less than idea but not horrible and livable at highway speeds.

 

[Camar068]

When i still had 31" tires, I wish I had put 4.10 gears on it. Now I'm on 32's....really wishing I did. 4l60E in mine. You go up to 35's, you may feel the same. Put your info in the calculator below to help make a decision. Also below is a sample chart to help you decide.

RPM calculator

Gearing chart

 

[Rjckey]

@Rjckey do you have an overdrive transmission? If yes, I'd go with 4.56's (I used this combo in my old crew cab, it drove great). If you do not have overdrive, 4.10's are a little less than idea but not horrible and livable at highway speeds.

I do not have an overdrive transmission, I have a th400

 

[Edelbrock]

When i still had 31" tires, I wish I had put 4.10 gears on it. Now I'm on 32's....really wishing I did. 4l60E in mine. You go up to 35's, you may feel the same. Put your info in the calculator below to help make a decision. Also below is a sample chart to help you decide.

RPM calculator

Gearing chart

Nice links.

 

[nvrenuf]

I do not have an overdrive transmission, I have a th400

Gotcha.

Personally, I'd go deep on the gears because parts are too expensive to wish you had done more when it's done. If you're not traveling, etc then no harm / no foul on deeper gears.

Also, if you think even remotely think you would ever go to a bigger size tire then factor that into the decision too.