It's all in with an SLP tq arm
set the pinion angle and noticed the arm will hit the floor by the seatbelt mount...
Started looking closer at everything and - the tq arm is straight back from the trans mount in the tunnel - the rear is centered in the wheel wells, the driveshaft is not parralel to the tq arm - from the trans it angles out to the pass side into the rear u-joint, not centered in the tunnel.
is this normal?
the housing was set up by pro's with a jig and bracket used for 82-02 cars.
moving the tq arm mount in to the center of the rear won't help because if I make the shaft and tq arm parallel - the rear will shift to the driver side....

is your driveshaft off center to go into the 9"?
not alot - but from the rear of the car looking forward - noticable

 

If the car is lowered especially you will need to "clearance" the floorboard on the drivers side of the trans tunnel.


David

 

it's not lowered - I did massage the floor board for extreme movement of the tq arm - but the d/s being not parallel to the tq arm - I don't know if it's normal or acceptable

 

Mine is the same as yours, wider in the rear than the front.



David

 

The 9" pinion is offest by design. The only way to get both the housing & the pinion centered is with an after market housing. They offset the center section so the housing looks centered from the back & the pinion is centered from the front. You need two different length axles to make up the offset.

This is not a real good shot but if you look close at how the center section is mounted to the rear end housing it is offset to the left side as you look at the picture.

http://smg.photobucket.com/albums/v2...lerRearEnd.jpg

 

If you can get the clearance in your tunnel I don't think the offset will pose a problem as far as u-joints. It works in a ford should work in a camaro.

 

all your comments are making me feel better because I drew the same conclusions!
I just thought the aftermerket guys would have made the bracket mount so everything would be as stock. I guess the shorter axle on one side would be the onlt way to center the pinion. I's Moser housing so I guess it must be safe to run. thanks guys!

 

It SHOULD have 2 different length axles, mine does.


David

 

interesting.
What brand/ who made your housing?
Since mine turns out to be a Moser (just asked they guy who sold the rear to me - before he just said a shop made the rear for him in pieces)
and the tq arm mount width/housing ends being centered makes the pinion off to the pass side - I'd think they would have made the driver side axle shoreter by an inch to move the pinion center over to be straigh with the trans output.
BUT - I don't know how they could get the tq arm bracket mounting points set up to allow proper location of that!
the aftermarket world if compromises

Mine probably has a shorter axle AND the pinion off center but it's the best location for both critical points and centering the wheels.

David - if you shaft is farther apart from thr tq arm in the rear - I'd say we have identical dimension relationships.
So is your arm straight back from the trans, d/s angled - or both slightly angled apart from the trans to the rear?

 

EDIT
Just found pics of my rear when seller removed it.
He had a Spohn tq arm with 2 mount hole sets. It was mounted closer to the pinion center, which no doubt slightly shifted my housing to the driver side - and let the arm and d/s run closer to parallel.
I guess I'll be getting an arm with a monuting bracket made for a 9" - the SLP was not.
It seems like I'll be ok to drive for now, just make it perfect later.
Hard to determine the wheels are perfectly centered - they're close though.

 

called BMR - said as long as the tires are centered the offset d/s should not be an issue - I don't need to buy an arm with extra holes to move it.
let's hope!

 

Test drive =
I have pictures in my camera showing the lines of the tq arm and d/s I will post after work.

nice rear, no vibrations, all my new mods working well. Sig updated.
Thanks for the input guys

 

Spohn includes two set of mounting holes in all his TA's, so they will fit the 10-bolt, 12-bolt or 9-inch rears. I would suspect BMR does the same thing. Before the arms were equipped with both sets of holes, to allow the correct alignment, there were TA failures due to the offset. Be careful.

 

Sound advice. I'm happy that my tq arm is the parallel line from trans to rear and the d/s kicks over as it heads to the rear. Putting the d/s and arm closer at the rear pinion via extra mounting holes can only move the arm over because the rear housing is centered in the car body.
Why would we want a moving suspension arm to be misaligned?
I think the mistake would have been to align the d/s straight using my panhard rod, putting the tq arm over into the driver loor pan, and making the driver side tire out of the wheel well and the pass side in the well.
Only way to correctly have a straight d/s and straight tq arm would be a shorter driver axle and longer pass axle so the pumpkin could move over until the pinion centerline was stright to the trans output shaft.
Moser did make the driver axle shorter - but did not center the pinion.

 

Well, not the best view - but you can see how the arm and d/s angle apart toward the rearend.
From a straight view behind the tq arm is stright in the tunnel, shaft is slightly angled. Rear is centered in wheel wells.