Gears & Axles Driveshafts | Rearends | Differentials | Gears | 12 Bolt | 9 Inch | Dana

9" is in, break in???

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Old Sep 22, 2004 | 04:11 PM
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Default 9" is in, break in???

cant wait to launch it on slicks

is there a break in period??

i am very happy with my decision to go 430's and auburn. car drives like stock and the gears are great even on the highway
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Old Sep 23, 2004 | 01:24 AM
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I think the break in is pretty simple.

For Street:
1. Just a 2 -3 minutes in forward and reverse up on jack stands.
2. Drive it around for about 10 miles and accelerate and decelerate at normal rates. and then let it cool for 1 hour.

For Drag racing, do step 1 above
Pull to the line
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Old Sep 23, 2004 | 01:29 AM
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The only problem I am having is that I don't think my pinion angle is right. I eyeballed it and it is pretty close. At least it is close enough that the U-joint isn't making noise like it was when I first installed it.

I am going to have to buy one of those pinion angle gauges to set it right.

Oh yea, congrats on the install!
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Old Sep 23, 2004 | 03:04 AM
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How smooth was that install. I will be installing mine as soon as it gets here in the mail.
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Old Sep 23, 2004 | 06:37 AM
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wasnt bad at all. i had to lower my exhaust a bit cause it was hitting the DS. stock style exhaust shouldnt have a problem though. also the sway bar was hitting the t/a mount so i had to rotate back a bit. other than that pretty straight foward.

get a friend to help cause that bitch is heavy. my back hurts so bad today
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Old Sep 23, 2004 | 07:49 AM
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If I had it to do over again, I'd definately would have went with 4.30's over my 4.10's. Can't wait to see what you run on slicks!
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Old Sep 23, 2004 | 10:46 AM
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Tally, enjoy the clutch dump launches.
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Old Sep 23, 2004 | 06:00 PM
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Originally Posted by Tally TransAm
wasnt bad at all. i had to lower my exhaust a bit cause it was hitting the DS. stock style exhaust shouldnt have a problem though. also the sway bar was hitting the t/a mount so i had to rotate back a bit. other than that pretty straight foward.

get a friend to help cause that bitch is heavy. my back hurts so bad today

I shouldnt have any problems exaust wize cause my true duals dump at the axle
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Old Sep 23, 2004 | 07:27 PM
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i have a 3.5" i pipe and a 3.5" flowmaster that dumps before the axle. the muffler hangs just below and to the right of the DS. the new ds was a little lower so it hit. easy fix though
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Old Sep 23, 2004 | 09:20 PM
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Originally Posted by Tally TransAm
i have a 3.5" i pipe and a 3.5" flowmaster that dumps before the axle. the muffler hangs just below and to the right of the DS. the new ds was a little lower so it hit. easy fix though
did you NEED a new driveshaft for the 9", or did you get a new one just to upgrade at the same time?
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Old Sep 23, 2004 | 11:04 PM
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Originally Posted by Turo
did you NEED a new driveshaft for the 9", or did you get a new one just to upgrade at the same time?
You don't NEED it. All you need is the correct Ujoint. Now if you plan on launching off the rev limiter with slicks, then you might NEED a new DS
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Old Sep 24, 2004 | 07:37 AM
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Did it come with the U joint? If not where can I get one, how much do they cost?
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Old Sep 24, 2004 | 10:04 AM
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Mine didn't come with a U-joint, but I bought the center section seperate. I got the U-joint from the LSITech parts dept. (Parts for sale)

I would think that most of the sponsors on here would sell you the correct U-joint with the rearend package if you asked?
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Old Sep 24, 2004 | 07:25 PM
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lemme correct, i didnt get a new ds, the new ds angle was a little lower

ttp has the ujoint, so does napa. part #447 i believe
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Old Sep 27, 2004 | 03:38 PM
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Originally Posted by Tally TransAm
lemme correct, i didnt get a new ds, the new ds angle was a little lower

ttp has the ujoint, so does napa. part #447 i believe

Go ahead and plan on buying a drive shaft... mine died on the first launch at the track on ET streets with the 12 bolt.. cost me $$$ for a damn rollback ride home.
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Old Sep 27, 2004 | 08:39 PM
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good to see you got it in tally

you will learn to love it trust me, and the first run down the track you love it even more , and still drive home

cograts man


as for break in, jack stand runs, few street runs, for heat cycles
then let it fly
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Old Sep 27, 2004 | 09:39 PM
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So who makes the strongest/best drive shaft?
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Old Sep 27, 2004 | 09:41 PM
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Originally Posted by 2MuchRiceMakesMeSick
So who makes the strongest/best drive shaft?
from what ive seen and heard, dennys nitrous ready is preety bullit proof
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