What size gear ratio do I need?

[victa15]

So I took apart my 3/4 ton axels that I'm going to put on my 79 w200. I'm putting 37s on it. They are 3.73 gears and I've read that I need 4.88s or 5.13s to make the truck run good. Is this true. What gears are anyone using. Oh yeah I have a mild built 318 so its no big power house. I just want It to drive on the street and do some light 4wheeling

 

[LocuMob]

According to this chart, yep.

2nd line under "View original size" box, grey is daily driver and recommends either a 4.88 or 5.13 gear. Blue yields better milage, yellow is for towing.

 

[victa15]

Oh ok cool. That helps a lot thanks

 

[LocuMob]

No problem.

 

[7mopar]

Why can not I get rid of the view original size message?

 

[LocuMob]

Why can not I get rid of the view original size message?

Because I downloaded the picture and it's part of it.