help with gear selection
#1
help with gear selection
truck is a 04 reg cab with a 3.0 and 8.8' rear. Currently has 4.10 now. I have my lift, wheels and tires ready to be installed now all im waiting on is rear end. I drive 300+ miles a week with 40% interstate. I dont wont the truck taching out at 75-80 while on the interstate but at the same time I wont descent mileage and pulling power. Im leaning towards 4.88 since most guys with 33's run 4.56.
wheels are alum, american racing 15x8
tires are 35/12.50/15 summit mud dawgs.
wheels are alum, american racing 15x8
tires are 35/12.50/15 summit mud dawgs.
#2
best way to figure this out is with some basic math...
stock im not sure what tire size you have. 30s? lets go with 30s for my example...
35 / 30 = 1.16666
stock gear ratio is 4.10
1.16666666 x 4.10 = 4.788
so pick the closest gear ratio to 4.788 which is 4.88s so you are correct on your choice. that will feel the closest for factory.
you wont tach out at 75-80 btw.
stock im not sure what tire size you have. 30s? lets go with 30s for my example...
35 / 30 = 1.16666
stock gear ratio is 4.10
1.16666666 x 4.10 = 4.788
so pick the closest gear ratio to 4.788 which is 4.88s so you are correct on your choice. that will feel the closest for factory.
you wont tach out at 75-80 btw.
#9
Still think I will stick with 4.88's. Found a mechanic who will install them for $150 on the side. seems like a good deal to me.
#12
Talk to your installer. It'll likely end up being cheaper if you do buy the combo kit(gears + full installation kit) than it would be for him to buy the parts then charge you for them. There were some parts I needed that I didn't buy earlier, but he wrote them off because I had two axles for him to gear, plus I brought him customers in the past.
#13
minimal you need a minor install kit, that comes with shims, pinion nut, crush sleeve, pinion seal, and marking compound.
you shouldnt need to replace the bearings but sometimes if the installer has to remove and install them multiple times to get it shimmed correctly they will need replaced.
you shouldnt need to replace the bearings but sometimes if the installer has to remove and install them multiple times to get it shimmed correctly they will need replaced.
#15
minimal you need a minor install kit, that comes with shims, pinion nut, crush sleeve, pinion seal, and marking compound.
you shouldnt need to replace the bearings but sometimes if the installer has to remove and install them multiple times to get it shimmed correctly they will need replaced.
you shouldnt need to replace the bearings but sometimes if the installer has to remove and install them multiple times to get it shimmed correctly they will need replaced.
Hey Jason, how many miles on your truck? It might be worth the extra $50 to just go for the master kit and you'd have a fully rebuilt axle in the end. I know my installer always uses new carrier bearings in a rear axle gear install. Might be a good time to upgrade to a limited slip if you're open. You'd basically saving yourself the same install cost later down the road.
#16
#17
Jason...check my above post...i edited it a little.
Here's exactly what I ordered..completeoffroad 8.8 package deal(yukon gears + yukon master install kit) : FORD 8.8" GEAR & INSTALL KIT PACKAGE DEAL 4.88
Here's exactly what I ordered..completeoffroad 8.8 package deal(yukon gears + yukon master install kit) : FORD 8.8" GEAR & INSTALL KIT PACKAGE DEAL 4.88
#18
#19
Mine is open right now....this budget lift is going out the window
TRAC LOK POSITRACTION FORD 8.8" 28 SPLINE
This all I need if i go that route. truck will never be drivin off road so dont need any kind of locker
TRAC LOK POSITRACTION FORD 8.8" 28 SPLINE
This all I need if i go that route. truck will never be drivin off road so dont need any kind of locker
#20
Summit's cheaper....by quite a bit. And getting it to you is only $10 too.
Ford Racing M-4204-F288 - Ford Racing Traction-Lok Differentials - Overview - SummitRacing.com
You understand why it's such a good idea to go ahead and do this right? lol. You gotta pay for a gear setup anyway when doing gears or a carrier install...it's like hitting two birds with one stone(gears + LS). It's just smarter to take advantage if you can afford it. Just throwing ideas out there ya know?
Ford Racing M-4204-F288 - Ford Racing Traction-Lok Differentials - Overview - SummitRacing.com
You understand why it's such a good idea to go ahead and do this right? lol. You gotta pay for a gear setup anyway when doing gears or a carrier install...it's like hitting two birds with one stone(gears + LS). It's just smarter to take advantage if you can afford it. Just throwing ideas out there ya know?
#21
Mine is open right now....this budget lift is going out the window
TRAC LOK POSITRACTION FORD 8.8" 28 SPLINE
This all I need if i go that route. truck will never be drivin off road so dont need any kind of locker
TRAC LOK POSITRACTION FORD 8.8" 28 SPLINE
This all I need if i go that route. truck will never be drivin off road so dont need any kind of locker
#22
Summit's cheaper....by quite a bit. And getting it to you is only $10 too.
Ford Racing M-4204-F288 - Ford Racing Traction-Lok Differentials - Overview - SummitRacing.com
Ford Racing M-4204-F288 - Ford Racing Traction-Lok Differentials - Overview - SummitRacing.com