jhshnh

Does anyone have any data on this? I'm very curious and wondering as I get close to buying one of these. I'm looking at the Moser 9 (not fabbed) or the S60 with my A4.

ZONES89RS

iTrader: (25)

The 60 eats more power and is a little heavier usually. Not enough to be able to tell with allot of power. A 12 bolt will eat the least power usually and is fine for many running much faster than I ever will. Seen them all go 7s in the 1/4 and seen them all break running 9s with some tire shake.

jhshnh

10s is probably as fast as I'll ever go.

ZONES89RS

iTrader: (25)

I would find the cheapest one then and throwing in there. That's usually a 12 bolt.

ringmaster72

iTrader: (8)

The S60 uses LESS power than a 9 inch.

guppymech

iTrader: (7)

^^^^This is true. The greater a pinion is offset from the ring gear centerline the more parasitic drag the rear will have.

01ssreda4

iTrader: (96)

OP, go 12 bolt!

roninsonic

iTrader: (3)

I've seen that even though the 60's weigh more, they eat less power and make less noise.

ssgunny

iTrader: (6)

With an auto/torque arm setup this would be my line of thinking.

blackandgold

iTrader: (2)

UMI just came out with a kit to help out with the TA mount issues some people had as well. 12-bolt would probably be a good option for you!

jhshnh

Wow guys. I've heard a lot of negative talk about the 12 bolt, but I've seen positive feedback as well. I would like to go with a 12 bolt but had kinda ruled it out with everyone talking about the torque arm issue and noise.

blackandgold

iTrader: (2)

They seem to be fine behind the A4 noise wise and with UMI's new kit the TA problem should be less of an issue. I recently dropped the coin on a FAB9 because I have poor financial planning abilities and they're so dang pretty. But it sounds like the 12-bolt would work fine for you.

01ssreda4

iTrader: (96)

The problem is most of what youre reading is repeated bullshit and not actual factual advice. I do not regret my 12 bolt purchase. I chose it, I built it, and I race it.

Install here:

https://ls1tech.com/forums/gears-axl...t-install.html

Here she is putting in work:

Sprayed 99

iTrader: (14)

The car used in this test is not LS powered but it shows hp results between 9", dana 60 and 12 bolt.http://www.hotrod.com/how-to/transmi...ear-axle-swap/

01ssreda4

iTrader: (96)

Cool article, wish they woulda done them all with a spool just to level the playing field a tad more.

jhshnh

Looks like you're running some Serious times. Good info here!

blackandgold

iTrader: (2)

Not to mention if you want to auto-x or road race the 12 bolt is a better option than a stamped 9 inch or s60 based on unsprung weight alone.

jhshnh

Only straight line stuff here. So does the 33 spline hold your power?

blackandgold

iTrader: (2)

I just ordered a FAB9 and will be running bolt on power through it for a little while haha

01SS is the dude who is thrashing on a 12-bolt with no issues. I think you'll be fine though, the A4 is pretty easy on rears.

01ssreda4

iTrader: (96)