LS1 Eddie

iTrader: (2)

I'm trying to determine whether or not I should upgrade my rear. I know that as an automatic we have a slight advantage over the M6 guys who seem to snap these things left and right. What kind of setups do you have and how have they held up?

koolaid_kid

iTrader: (21)

IMO, unless you break it, don't replace it. The M6s put far more shock on the diff than A4s. Just my opinion.

Hennytime

iTrader: (33)

i wouldnt worry too much on it unless your leaving HARD on m/t's or stickier. its rare to see a broken 10 bolt on an auto with average tires/nittos. most everything ive seen with a broken ten bolt is a m6, a geared m6 is the most dangerous imo

ABA383

iTrader: (1)

I never broke my 10 bolt, but went with a Strange 12 bolt because I was upping the power and wanted piece of mind when I launch...So far its been in a bit over a year and about 75 11 second runs with 1.55 60's...and 5000 street miles and its held up fine...The gears are a wee bit noisier than I'd like, but we are going with 4.10s anyway so hopefully we will quiet it down...

--Alan

BlackHawk T/A

iTrader: (3)

Not replacing it until its broken. It is not cheap at all. Unlike the transmission (which has many things you can upgrade) I wouldn't spend the money until its busted.

bad2000z

iTrader: (4)

My stock 10 bolt has an Eaton posi, and a T/A girdle. It's held up pretty well so far to many 1.52-1.55 60" times.

LS1 Eddie

iTrader: (2)

Good responses. I guess I will save my extra $1800.00 and put 3:73's in the 10 bolt. I do plan on leaving somewhat hard on M/T drag radials this year. I hope she holds up!

ohsofast

iTrader: (6)

I replaced mine b/c i thought it was going out due to the whine, but my 12 bolt sounds exactly the same as the original (whining)

vanilla89

iTrader: (8)

i got a 8.8,but it came stock in my car

bad2000z

iTrader: (4)

I would upgrade the diff. too if I were you. You can find good deals on Eaton posi units if you shop around. FYI they are MORE expensive at Summit/Jegs.

'Trust'

iTrader: (24)

I was thinking about doing the same for the future. Spoke to Jason at Extreme (shop here in OK, they did most of my work) he suggested if I do anything to do axles and a girdle if i do gears. He said the stock 98 is actually a decent posi and to not replace it unless it brakes. I think with the stock rear you'll be just fine add hardened axles, and a girdle and your GOOD.

gillbot

iTrader: (27)

I changed mine to another 10 bolt from a M6 car just for the better gearing of the 3.42.

Scary Guy

iTrader: (15)

I changed mine to a 9".But i am going to make mine a 9 sec ride someday so i started at the back and worked my way forward.

GregWS6&z28

iTrader: (8)

same here.. still hope it doesnt break. have had good luck with teh rears, but not the transmission

MARKSZ71

iTrader: (3)

mine is stock and staying that way until it breaks 1.51 60ft on mickey Ts

BlackHawk T/A

iTrader: (3)

Yeah that's a good idea, I wonder how cheap you could get away with that...

Mind sending me a PM about what was involved and what you can expect to pay?

Hennytime

iTrader: (33)

i would say around 300 dollar sine my buddy has done it twice

Figz Z28

iTrader: (8)

I still have my stock one and not planning on changing it out till it breaks.

02 z/28

iTrader: (19)

Iam also on stock,will chg when she tells me too

RamAir02TA77

iTrader: (3)

I still have a stock rear I went 10.78 on it with a 1.46 60ft an also other 11 second passes. I think what will help is using a soft side wall tire. I use et streets the slick type. The et street drag radials have a stiffer side wall which wont flex as much as an et street slick type and might lead to an easier death to the stock 10 bolt. I would also recommend to preload alittle on the launch. Im hoping my 10 bolt lasts through another season im probobly going to put et drags on with prostars.