What are the negatives to installing just the rear sets of gears first, instead of both at the same time? I dont ever use my 4wd and the truck is staryting to feel like a slug. I got 35's on there now and was lookin at doing the 4.56's, or should i just get the 4.88's. Any info you guys can give me on just doing the rears for now would be great. Thanks

 

if you don't mind not having 4WD, there is nothing wrong w/ doing things this way.

 

dont mind it at all, seeing as i never use it......

 

anyone?

 

You should get 5.13's. Do both or don't do it at all even though you "never" use 4wd you may have to one day.

 

I dont know where the 5.13's came from..but definetly go with the 4.56's unless you to ALOT, then consider the 4.88s. mine tows good with the 4.56's and i am happy with it. you can do just the rears now if you want and do the front later. There will be no problems except you absalutley cannot use 4wd until the front is done.

 

Thanks, i dont know where the 5.13's came from either I just mainly want them because I do all city driving. I eventually plan to do the fronts as well, just dont have all the money up front.

 

I hear ya. I almost had to go the same route but winter was comming up too fast. I do a lot of city driving, and it makes a huge difference. I had almost forgot what od was

 

How much did it change your city driving mileage?

 

Anyone know where the cheapest place to get a 4.56 ring and pinion and a master install kit would be??? I am horrible at searching for this kinda stuff.

 

M-4204F288K4 - JEGS Ford 8.8'' Ring & Pinion/Differential EZ Kits

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Product images may differ from actual product appearance.

Our Ford 8.8'' Ring & Pinion/Differential kits include all necessary components needed to update your factory ratio ring & pinion and to replace your worn out differential. Designed for 28-spline axles.

Kits Include:
# JEGS Ring & Pinion Gear Set
# Ford Racing Traction-Lok Limited-Slip Differential
# Richmond Gear Installation Kit
# 2-Quarts of Redline 75W90 Gear Oil
# 4-Ounces of JEGS Limited Slip Additive




60028K - JEGS Ford Ring & Pinion Sets and Kits

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Product images may differ from actual product appearance.

JEGS #555-60028K

Ford 8.8" Ring & Pinion w/Install Kit
4.56 Ratio
41-9 Teeth

JEGS gear sets are made with high-quality grade steel to provide long-lasting use for street, highway, and the occasional race assault. They're manufactured utilizing modern machining and heat treating for added strength and durability for miles of trouble-free service. Marking compound and sealant included, and sets are also available with an install kit.

By having the option to buy a JEGS installation kit with the JEGS gear sets, it has never been easier to install a ring and pinion.

Each kit includes JEGS:
# Pinion and carrier bearings and shims
# Pinion nut and seal
# Crush sleeve
# Cover gasket or RTV
# Ring gear bolts
# 75w-90 Synthetic Differential Lube (2 quarts)
# Limited Slip Additive (4oz bottle)
# Thread locker sealant
# Marking compound
# Installation instructions




JEGS #555-61269

# Deluxe Differential Installation KitFord 8.8" Truck

# Pinion and carrier shims
# Ring gear bolts
# Marking compound and brush
# Crush sleeve
# Pinion seal and nut
# Cover gasket or RTV
# Timken® pinion & carrier bearings
# Timken® axle bearings and seals
# Thread locker




JEGS Ring & Pinion Set Up Tool Kit

JEGS universal pinion depth tool properly sets your pinion depth to prevent ring gear whining, premature wear and failure and works with most any differential.

Features:
# Calibration block that is machined from extruded aluminum and flat-bottom drilled for pinpoint accuracy. It is designed to be held comfortably during use or placed in a vise.
# All aluminum components are hard anodized for strength, durability and for a lifetime of use.
# Includes a Jegs dial indicator that accurately measures in .001'' increments.
# Includes 3 dial indicator extensions for use with most any differential.
# Laminated, detailed instructions that won't get ruined by fluids or dirt and won't deteriorate over time.
# Has a custom molded case, components are stored securely to prevent damage and protect your investment when not in use.
# Made In USA

 

There are other stores that may offer a better price. But Jegs has everything bundled.

 

Thanks for the info man. I thought the 04 rear ends had the 9.75", or is it the 8.8 like you have listed.

 

My truck has an 8.8. You might have a 9.75. Look under your truck.

 

5.4s got the 9.75
4.6 and 4.2 have the 8.8


BTW dont use the crappy gasket they give you in the kit to seal up the cover