Rear Differential

[thehoe92]

didn't do the front end so I don't have 4wd any more
they have broken in and what a difference!!
my speedo is still off but I've gotten used to it
it gets off the line so much quicker now
I put 22 gallons in last week and even with me at WOT a lot of the tank I still managed 340 miles which is about 15 mpg!!!
definitely an increase
highway going 65 is about 2300 RPM's and it will still get on it even in top end in fact it probably likes top end better

it downshifts every time I step on the throttle and won't shift until I get to around 90 mph

I've also noticed that when I shift at around 30 mph it doesn't lug anymore to get back up to my power band it shifts then starts pulling right away

it also rained last week and I whipped it sideways a couple times with no issues

even in puddles I'll stomp on it and feel the tires skipping then the posi locks in and it breaks loose


I love my new diff!!

 

[gmcjohn]

Just food for thought regarding burnouts and the like. I read this info on here about a year ago, and I'm glad I did! If you are burning out and you have your wheels turned be sure not to crank it because you can blow your power steering pump! Just FYI as you seem to be interested in spinning your wheels, but then again who isn't?

 

[slocaddy]

ive been thinking twice about 456's and just did some other things instead, but hearing your out come has me reconsidering

 

[candyman74]

didn't do the front end so I don't have 4wd any more
they have broken in and what a difference!!
my speedo is still off but I've gotten used to it
it gets off the line so much quicker now
I put 22 gallons in last week and even with me at WOT a lot of the tank I still managed 340 miles which is about 15 mpg!!!
definitely an increase
highway going 65 is about 2300 RPM's and it will still get on it even in top end in fact it probably likes top end better

it downshifts every time I step on the throttle and won't shift until I get to around 90 mph

I've also noticed that when I shift at around 30 mph it doesn't lug anymore to get back up to my power band it shifts then starts pulling right away

it also rained last week and I whipped it sideways a couple times with no issues

even in puddles I'll stomp on it and feel the tires skipping then the posi locks in and it breaks loose


I love my new diff!!

so did you take the front driveshaft out or what and i thought that screwed things up? also post some vids of it.

 

[Travieso]

Yes 1+ on videos.

 

[thehoe92]

Just food for thought regarding burnouts and the like. I read this info on here about a year ago, and I'm glad I did! If you are burning out and you have your wheels turned be sure not to crank it because you can blow your power steering pump! Just FYI as you seem to be interested in spinning your wheels, but then again who isn't?

the wheel is always straight when I'm attempting to do a burnout
I have never really been able to do one so I don't try anymore but if it is wet and I feel like spinning the tires the wheel is always straight

but thanks for the info

ive been thinking twice about 456's and just did some other things instead, but hearing your out come has me reconsidering

I think you should definitely reconsider especially if you have 24's or better
it would be pretty hard to drive my tahoe with 3.73's again just because of how much of a difference these gears made

as soon as I got the to the diff shop I asked if I had to do the front and they said no.. just as long as I don't put it in 4wd I'm fine.
I'm thinking about making my hoe a 2wd anyways

what would you guys like to see some videos of?

 

[candyman74]

about the gas mileage. until you get the speedo fixed your gonna think your getting better gas millage . i had a mustang and put 4.11s in the rear end and i thought the same thing i was like damn im getting better gas mileage but the speedometer is going faster than your truck is going. use a gps to to show you how fast your really going. so really your putting extra milage on your truck cause the speed is off. but anyways if you get a chance ask the rearend shop how much to do the front diff aslo.

 

[thehoe92]

I did some math and the speedo is off around 14.2 mph so when the speedo says 60 I am really going close to 45mph

this was with city and freeway driving that I got 15mpg

 

[thehoe92]

the differential has once again failed me

driving down to the bay on Wednesday and nothing went wrong.
drove to Matt14's house in San Leandro and hit a big dip in the freeway, then once I got off the freeway my left half shaft started making noise

then the next morning driving through chinatown my tires started squeaking really randomly.. it wasn't a slick surface by any means but they were squeaking

then down by the wharf I heard the dreaded clunking and grinding noise that I became so accustom to, so I pulled over and let it sit.. got on to the freeway and it wasn't making any noise

got over the golden gate bridge and the last bump made my whole rear end feel like it had just fallen out on the golden gate bridge..

pulled off into vista point on the marin county side to let it sit and think about if anything seriously bad was wrong

got out to let the air out of my bags and checked underneath and there was oil everywhere on the ground

a bolt had come loose and hit the cover and I'm guessing a ring gear got dislodged and hit the cover as well because there are perfect teeth marks of it

got it towed home with my uncles triple a 100 mile trip

now its just sitting in my driveway until I'm actually healthy enough to deal with it

it should be under warranty but I have a feeling they are going to try and ********* me and say that its not there fault

 

[slocaddy]

when things like this happen it really kills the ''mood to mod bug'' for me, i had my electric fans catch fire (junk fans) and wonderd wy even bother? sorry this happend to you.