FASTCAMAROMAN

iTrader: (1)

has anyone tried building this with the differnt diff axles etc i know they make with an auto how much hp can they hold?

2001z

iTrader: (32)

I wouldnt go beefing up the 10 bolt . you can break them on stock on power with aftermarket axles and girdle? But i heard jeep axles will work and are alot stronger than stock ones but dont hold me to it .

91camaross

iTrader: (1)

i have a stock 10 bolt with gm 4.10 and a gm posi i put down 698 rwhp and went a 9.12 in the 1/4 and i have never broke it so they will handle a lil bit

FASTCAMAROMAN

iTrader: (1)

91camaro i take it your car is auto thats crazy never heard of that before 11s automatics seems to be where they like to stay 10s is no-no from what i've seen hell i've seen cam only m6 cars eat them though

Studytime

iTrader: (15)

I'm not convinced ...at all.

Ben T.

keliente

iTrader: (22)

Whenever you want to buy axles, etc, instead stick that money into a jar.

Ride the 10 bolt til it dies.

Purchase 12 bolt.

/end story

https://ls1tech.com/forums/gears-axles/510589-when-will-my-10-bolt-break.html

spazzyfry123

iTrader: (4)

Why 12 bolt over 9 inch? (I say 9 inch since that seems to be the only popular option) I seriously know nothing about either or why one is stronger than the other. Also, what is the sizing on a 12 bolt (inch)?

keliente

iTrader: (22)

It is generally understood that 12 bolts are for A4s, and 9 inches are for M6s, because they can take the abuse that a manual trans puts out. With that being said, I used a 12 bolt behind my 6 speed and had no problems. It's a personal choice, really. There is a thread at least once a week on 12 bolt vs 9 inch...in the end none of us are running 10 bolts anymore so we are all happy as can be

spazzyfry123

iTrader: (4)

Haha, yeah...I personally have a six-speed in my SS and thought I'd go ahead and get an idea on which I should use when and if it grenades. But with how you worded that, it sounds like the 9 inch is stronger if it is understood that a 9 inch goes behind the T-56 and the 12 bolt goes behind the auto. I say that because everyone else on here says that the T-56 is the rear-end buster out of the two trannies offered in F-bodies. Does that make sense?

keliente

iTrader: (22)

Of course. There is a lot more 'shock' in the drivetrain with a manual. Think about it. You drop the clutch at 6k rpms and all of the slack in the rear end SNAPS together. That's why some A4 people get lucky and ride their stuff well into the low 11's when M6'ers are breaking rears running 13's

People say the 9 inches are stronger, but really if you search you will find very few of either rear end ever breaking. Another option is the Dana S60.

RoastEmSS

cant wait till my s60 arrives...

Studytime

iTrader: (15)

Let me just add a few more things... (apparently this is a FI car)

To do a LOW 9-second pass with only 700 rwhp, you're going to have to launch the crap out of your car. I don't see the stock 10-bolt doing this once much less more than that even with an auto. We're talking 1.4-1.3 60s. With steep gears like 4.10/1 you're punishing the stock rear even more than the stock ratio- all with a decreased pinion.

Also, you're talking about a 140 mph trap potential here. This is NOT going to happen with 4.10/1 gears unless your motor turns to 8500 rpm.

Ben T.

firefighter

Maybe he meant 1/8 mile?


Seriously though we can argue about 12 bolt this and 9" that and whudabout the S60 or even me with my mild plans will say just put an 8.5" 10 bolt (not a popular opinion btw) or even the 8.8" Ford, but.......... we all agree DO NOT WASTE YOUR MONEY on a 7 5/8" 10 bolt