89lt1

iTrader: (6)

looks like you already have the cross pin bolt out so now take the cross pin shaft out then push your axle inward and the c clips will come out of the seats and come off the shaft then you can pull them out. if you just took the cap off it should be fine. since everything has preload on it from the shims it shouldnt have moved just tourque it back down.

BlueZee28

iTrader: (30)

I found the culprit haha

This thing left metal chunks all inside the axle housing. Surprisingly, the end of the axle which twisted and broke off, lodged itself inside the carrier which prevented any of the debris from getting inside the pumpkin and trashing the gears. It's 12 bolt time... She won't be moving again this year.

Pocket

iTrader: (24)

Dang you totally killed that axle

Falconiroc

She's Dead Jim... Your Torque Killed her.



Hope you get it back on the road soon Nick!

alan91z28

well once you have your 12 bolt in, this will be remembered as a good story you have to tell!

also when i was doing my iroc last year, i looked at three options

- 12 bolt
- dana 60
- 9"

i ended up going with the 9" from moser... it is a great set-up with a lot of gear options, i also got the detroit true trac with it... all of these are great rear ends... moser also has great customer service in my experience

TPI TERR

iTrader: (9)

same thing happened to me a few months back. my axle got bent and broke the same spot where yours broke and im only pushing stock hp lol . i just changed out the axle cleaned everything out and i was back on the road the following week. lol

ghettocruiser

iTrader: (4)

Man..I wouldnt let that keep me from driving it for the rest of the summer!!!!

Find another axle, slap it in, and just take er easy! But at least you'll be driving her, and your wife will be happy with your cheap fix, so it might buy you some points!

Finding a spare shaft, or set of shafts cant be that difficult, and as long as the splined end stayed in the diff and didnt let crap through, you should be fine to just re-assemble it and go.

J.

Grifter757

iTrader: (5)

Damn that sucks. On my old LS1 turbo setup I made 450/500 and never broke my rear end. Guess no playing at the track with my 700hp setup with that glass rearend.

five7kid

iTrader: (14)

Is that a factory or aftermarket axle?

Orr89RocZ

iTrader: (20)

head deck thickness is one thing to look at, and AFR has 225 and 235cc heads now that rock and would do great with a turbo.

1.41 60 foot on my stock 10 bolt. 500whp nitrous setup. Then many passes with 650-700whp and more torque than that and no problems. Eventually chipped a spider gear tooth, replaced rear with new 10 bolt 2.73 gear and no problems yet. Been 1.49 60 on that rear. Automatic trans. I guess I got lucky with 10 bolts but they seem to work well with automatics.


Sorry to hear your carnage, but T56 and 10 bolts dont mix Seen way to many stock or bolt on LS1's frag those things at the track with a T56. Only person I know having good luck with them with 6 gear is 87 TA. He's gone many 1.5 60's with a high 10 second low 11 second all motor 406 sbc. Sprayed that thing to 10.0's several times. The clutch slipped abit so that helped take up some of the abuse on the rear.

Go with a 9", i've seen a 12 bolt break with a T56 as well with a lsx car with about your numbers. Not as many 9" breaks

BlueZee28

iTrader: (30)

I'm assuming factory.

Atilla the Fun

AFR over-hypes the deck thickness issue. Stock LM7 heads do just fine at 15 psi. Check tirefryins10's engine on ls1tech.com. He's been running it that way for 2 years now, with no report of a blown head gasket, nor any need for upgraded head bolts.

Orr89RocZ

iTrader: (20)

Oh no doubt they can handle that kinda pressure. Just pointing out the differences, you can get a nice thick deck with aftermarket heads. May have some advantage may be overated. Should help on some builds like a nitrous setup where you can mill those heads down to get the compression you need and still have a strong thick deck. Certainly wouldnt hurt for an all out build with 20+ psi and over 1000whp.

Plus I hear aftermarket heads have better designed chambers than the LS factory heads but cant confirm that one way or another.

Atilla the Fun

The advantage to the AFR castings is twofold. Primarily, they were able to move the valves slightly apart from each other. Secondary was improving the short-turn radius, adding more meat there.
Race-only engines can start with higher static compression for a nitrous engine than a big-boost engine, but in the real world, nitrous loves low compression just as much as turbocharging does.
The AFR chambers were better than any GM chambers, until the 243 heads came out. 799s are the same, but were also used on 5.3s starting for '07, AFAIK. But those evaluations were only made naturally aspirated. Adding boost totally changes the mixture motion.
The AFRs aren't enough better to justify double the price. Especially with a lesser-flowing exhaust port. Gonna do under 15 psi of boost? Call TEA, not AFR. TEA does GM 243s for less $ than AFR 205s, if the chambers are your hang-up.

BlueZee28

iTrader: (30)

What about Patriots?


And for the rear, I am looking into having Cam get a custom 8.8 housing built for me and using a Ford 4.10 posi unit from something like an Explorer.

Atilla the Fun

I can't understand the populatity of the Patriots, their prices are worse, and their results from the flowbench are worse.
AFAIK, '96 was the intro of 31-spline for the Exploder 8.8", before that was only 28 spline. Nothing wrong with pre-'96 gears, however. The FRPP rebuild kit for the Traction-Lok is around $70.

BlueZee28

iTrader: (30)

So if I go with TEA heads, should I buy some 243 casting heads from them, or ship my 317's to them and have them port/polish them?

xpndbl3

iTrader: (5)

care to quote this proof somewhere? Nitrous loves HIGH compression, we run most of our engines around 14:1 or so and spray several stages both foggers and plates. I can't think of a single reason why you'd run a low compression nitrous motor. Who runs fast with a 8:1 nitrous motor??

Unless you mean "real world" like a daily driver and then still you want to run the highest compression within reason on 93 and add a splash of race gas when spraying. Otherwise you're leaving a bunch of power on the table for no reason at all.

BlueMagicSS

Looks like u had a one-legger.... Literally!!

BlueZee28

iTrader: (30)

Yep, one wheel peeler. And I'm attributing the mad wheel hop to the stock control arms.

Atilla the Fun

If I was doing your build, I wouldn't stress over the chamber shape. I'd ship them my 317s. Since it's a power adder build, I'd go for a stage 1.5 exhaust port, and not even stress the intake ports,-stage 1.5 would be plenty. I wouldn't get too crazy with the exhaust ports, because then you get too much port volume. You just want the flow. Turbo is effectively the opposite of long-tube headers, so a large volume exhaust port will hurt spool-up.

Atilla the Fun

Your experiences may vary. I've had success with 9.5:1 for nitrous. I've seen no worthwhile benefit from 10.5:1. I'm not Mike Thermos, I'm not a Nitrous guru. But I use a Nitrous Mastermind, and I do well with progressive 200-HP shots (hits) .
Bear in mind that a typical nitrous cam for me tends to be something like a custom 218/236-115

squatingeagle

sorry about the blow out. nice build though keep it goin

BlueZee28

iTrader: (30)

I'm putting an axle in it and will be driving it again very soon. I hope to have an 8.8 before the weather gets nice in 2011.

Jim85IROC

iTrader: (2)

For those of us who are welding-impaired, I'd like to see somebody like Moser step up and start offering bolt-in 8.8s. I like idea of an 8.8 instead of the heavier 9".

BlueZee28

iTrader: (30)

I don't weld either. Talk to Cam, he's who is going to get mine done for me.

xpndbl3

iTrader: (5)

buy an aluminum center section and I bet it's lighter than a 8.8

ZONES89RS

iTrader: (2)

Man, i have never popped an axle, just broke the ring and pinions:

mwfrels

Here's hoping getting your car in the Street Heat section of the November GMHTP will give you a little more of a boost to expedite. "BLUE ZEE28. Nick oar, a resident of St. Charles, Missouri, sent us this shot of his beautiful '91 Z28." Just came in the mailbox today. Congrats on becoming a featured ride.

Mike

BlueZee28

iTrader: (30)

A friend of mine texted me today about that, I'm headed to the book store after work!

built91Z28

That sucks breaking an axle like that. However, you know your going to wind up saving that axle to show people and brag "look what my car can do "

Shift06

I will have to check out that GMHTP. Congrats!

Jim85IROC

iTrader: (2)

Congrats on the GMHTP. There are a couple thirdgen.org members with LS swaps in the street heat section this month.

BlueZee28

iTrader: (30)

Thanks. I saw spikeZ's car in there too. I hope he gets a full feature when the car is finished.

Jim85IROC

iTrader: (2)

I'm sure he will... that car is one of the most impressive thirdgens I've ever seen.

Pocket

iTrader: (24)

Absolutely, almost as detailed as Neils