therock

iTrader: (2)

I have an 05 Z71 ECSB with the locker in 3:42. The 3:73's were not an option in 05.

I enjoy the 3:42's especially on the 500 mile drives to FL. But with current air fares that is no more.

I have a Radix and want to ask about;

The expected felt differences in performance?

The mpg hit?

Would my Dyno tune need attention?

Will I need to have the speed-o adjusted?

I will have a shop do it and need to know what to discuss to make sure no short-cuts are taken.

And what MFG gear set to buy? OE? Used from here?

And while I'm in there, a better posi unit? Brand?

Thanks Guys

trever1t

iTrader: (14)

With the Radix (and what tire size?) I'd say skip right to the 4.10's. I did the swap to 3.73 against better advice and kick myself ever since. Changing gear ratio or tire size requires a couple of simple adjustments. Performance will greatly be improved off the line, traded for a little economy of course.
Buy OE gears, they are the best. Everyone loves the TruTrac LSD.

Good luck, happy modding!

Breeze

iTrader: (16)

The expected felt differences in performance? Roughly 2 tenths better in the 1/4 mile

The mpg hit? Mpg wont suffer to much slow down a little lol

Would my Dyno tune need attention? You will need a tune

Will I need to have the speed-o adjusted? The tune will take care of the speed-o

I will have a shop do it and need to know what to discuss to make sure no short-cuts are taken. Guarantee

And what MFG gear set to buy? OE? Used from here? I have Yukon gears there very quiet no whine bought them from Randy's ring and pinion

And while I'm in there, a better posi unit? Brand? Definitely do a posi while you're in there I have an Eaton posi and is holding up just fine. Others like the tru-trac.

therock

iTrader: (2)

Thanks,

I have and will continue to run the OE 265/70/17 tires. I do go off road a tad for wildlife photography.

New tune you say. I'm curious as to why? My tuner will re-do it charging only for the Dyno time.

I forgot about being 4x4 and the front gears. Do they have to be changed to match?

trever1t

iTrader: (14)

Only need a few adjustments, not a full tune and no need for the dyno. Yes you will need to swap front gears also.

Mr. Sandog

There is a place in the software program to change from 3.42 to whatever you decide to change to (I suggest 4.10's). Takes all of 10 seconds to modify.

therock

iTrader: (2)

Thanks,

What kind of money ball park wise for front and rear gears and labor?

The cost of another type of locker looks out of reach.

53bowtie

iTrader: (6)

Around here you can have labor+gears front and rear for $800-$1000.

RandomHero

iTrader: (24)

You would be a fool to spend $1000 going from 3.42s to 3.73s. Sorry, but that's just a waste of money. With your ~31.5 tires I would be running at least 4.10s and most likely 4.30s.

That's coming from a guy who went from 3.42s to 3.73s. Although, it didn't cost me any money.

therock

iTrader: (2)

Thanks Guys, I'll be pondering all said here.