http://www.accuautoparts.com/more.js...table=techhelp

check it out they have a gear calculator that tells all look on top right of page...

 

If your looking for near stock performance, then go with the 4.56. Those will give you plenty of torque to get around easy, and still run around the highway. But if you use your truck for recreational things like off-roading, or need/want a lot more low end torque then go 4.88, but you will be racing the engine a bit at 70. It's really about whats more important to you. I think you would be happy with the 4.56, but you would have fun with 4.88 until you have to fill up.

 

thats what i was thinking i do alot of highway drive as well, but torque is sounding kinda good since thats kinda rare with ford motors! hahaha

 

Torque is rare with Ford motors? huh? Riiight.

Anyways, go with 4.88s if you plan on towing. Don't fear the gear.

 

Nice line

 

i think ill get 4.88's i fond out the rpm difference and its only 157rmp. so it would make sense to just do it.

 

good thread....