Gear Swap Write Up Rev. 1
#31
#33
Got my gears in over the weekend. It wasnt too bad of a job took about 4hrs to complete with two people. (My cousin doing most of the work, me being the "go for" haha). Man what a diffrence those 4.10s make its like i have a whole new truck. I have experenced power that I never thought the little 4.6 was capable of putting out. I would def recomend 4.10s to anyone who is looking to get more out of their truck but dont have thousands to spend in afteramarket mods. Havent really taken notice to gas mileage but what a difference it makes in the city. Thanks for all the advice guys I would never even thought of a gear swap if it wasnt for this forum.
Thanks Again,
Duane
Thanks Again,
Duane
#35
I also have a 3.55 from the factory. The Richmond gears are suppose to be favored by guys building race cars. After a little shopping around, I settled on Ford Racing Performance Parts 4.10. The main consideration was the price. My local dealership is a Ford Racing vendor. The install was at my local 4WheelParts.com. When the 35" tires went on with the lift kit, I noticed a drop in mileage and performance. With the 4.10 gears, my truck seems to drive better than it did when it was new.
#36
It is a good idea to change the gear oil after the first 500 miles in order to remove any metal particles or phosphorus coating that has come from the new gear set. This is cheap insurance and a good time to discover any problems before they grow to disastrous proportions."
#38
I just wanted to add a few thins i think are important.
1. the shim under the pinion should be used as a referance point. it will get you ballpark into your pinion depth but not always will it be correct. unless your stock gears have a depth writen on them and the new gears depth is the same. you may have to install th pinion without the crush sleeve and get a mesh patteren to verify the pinion depth is corect ot use a or make a tool to check the pinion depth. then install the crush sleeve or spacer kit. . as a cheater tool you can add a pinion shim to the crush sleeve and reuse it since they are a pain to crush.
2. backlash and runout should be check both can be done with a cheap dial indicator. you cant assume the shims that were stock will center the ring and pinion the same as the stock one did. and provide the needed back lash.
deffinatly utilize bill vistas gear install for help.
1. the shim under the pinion should be used as a referance point. it will get you ballpark into your pinion depth but not always will it be correct. unless your stock gears have a depth writen on them and the new gears depth is the same. you may have to install th pinion without the crush sleeve and get a mesh patteren to verify the pinion depth is corect ot use a or make a tool to check the pinion depth. then install the crush sleeve or spacer kit. . as a cheater tool you can add a pinion shim to the crush sleeve and reuse it since they are a pain to crush.
2. backlash and runout should be check both can be done with a cheap dial indicator. you cant assume the shims that were stock will center the ring and pinion the same as the stock one did. and provide the needed back lash.
deffinatly utilize bill vistas gear install for help.
#40
just a update from when i did my gears I had t add .010 shim to my pinion to get the pinion depth correct. stock the 9.75 was aprox 3.020 and i needed 3.112 my kit only had .010 and .15 and .020 shims . so adding .010 to the stock .030 was close enough.
front i was able to remove shim to get the 2.550 depth.
i was able to measure from the bearing cap mounting surface to the pinion face as it was centerline of teh axle
front i was able to remove shim to get the 2.550 depth.
i was able to measure from the bearing cap mounting surface to the pinion face as it was centerline of teh axle
#42
I know nothing about this stuff. But.....if I have this correct, by changing the gear ratio your truck with respond faster with better gas mileage? I have a 2007 FX4 5.4L and I'm putting 33" nittos on. This sounds like something I might wanna look into. How much would I be looking at for install at a local shop?? And how much would i be looking to pay for the gears?? Any help and info would be appreciated. Thanks.
#43
I just wanted to add a few thins i think are important.
1. the shim under the pinion should be used as a referance point. it will get you ballpark into your pinion depth but not always will it be correct. unless your stock gears have a depth writen on them and the new gears depth is the same. you may have to install th pinion without the crush sleeve and get a mesh patteren to verify the pinion depth is corect ot use a or make a tool to check the pinion depth. then install the crush sleeve or spacer kit. . as a cheater tool you can add a pinion shim to the crush sleeve and reuse it since they are a pain to crush.
2. backlash and runout should be check both can be done with a cheap dial indicator. you cant assume the shims that were stock will center the ring and pinion the same as the stock one did. and provide the needed back lash.
deffinatly utilize bill vistas gear install for help.
1. the shim under the pinion should be used as a referance point. it will get you ballpark into your pinion depth but not always will it be correct. unless your stock gears have a depth writen on them and the new gears depth is the same. you may have to install th pinion without the crush sleeve and get a mesh patteren to verify the pinion depth is corect ot use a or make a tool to check the pinion depth. then install the crush sleeve or spacer kit. . as a cheater tool you can add a pinion shim to the crush sleeve and reuse it since they are a pain to crush.
2. backlash and runout should be check both can be done with a cheap dial indicator. you cant assume the shims that were stock will center the ring and pinion the same as the stock one did. and provide the needed back lash.
deffinatly utilize bill vistas gear install for help.
There is a reason that more experienced gear shops charge a pretty penny to do proper gear swaps. Not having a correct pattern and both carrier and pinion preload has a great efffect on how much stress they see and how long they will last. Something to think about.