finally got this QP 9" installed. need info on brake cables

johnnunez29

Greasemonkey
May 9, 2022
120
18
As some may know (because they have already helped me on this mission). I got around to doing the 9" rear end install today. yesterday i dropped in the center section with rtv and clamped it down. One thing i did notice and im not sure if its normal or not, the axle ends have a very small bit of play? maybe like 1/8 -1/4 play? if any one can chime in thats much appreciated. Also i ddi install this with the rear end big brake upgrade kit to run rear c7 zo6 calipers and the back plates come equipped for a parking brake cable. has anyone use that specific kit? want to get an idea on how to run this. this is the kit i have. https://bigbrakeupgrade.com/product...0-offset-torino-new-style-ends-3-150-bearing/
 

Built6spdMCSS

Royal Smart Person
Jun 15, 2012
2,258
113
Florida Beach
Sounds like you'll need the brake cables for a rear disc setup and integrate them into your car. I did that when I installed my LT1 Fbody rear disc brakes.

That's alot of end play, how are the axles held in? Flat plate holding in the pressed on sealed bearing?
 

johnnunez29

Greasemonkey
Thread starter
May 9, 2022
120
18
Sounds like you'll need the brake cables for a rear disc setup and integrate them into your car. I did that when I installed my LT1 Fbody rear disc brakes.

That's alot of end play, how are the axles held in? Flat plate holding in the pressed on sealed bearing?
Yes. I followed instructions and axles went in fairly smooth, of course I had to bang then In to seat the bearings. And locked them in with bearing plate.
 

johnnunez29

Greasemonkey
Thread starter
May 9, 2022
120
18
Sounds like you'll need the brake cables for a rear disc setup and integrate them into your car. I did that when I installed my LT1 Fbody rear disc brakes.

That's alot of end play, how are the axles held in? Flat plate holding in the pressed on sealed bearing?
Unless I missed something. I received the center section and just dropped it in. Put in the seals and slid through the axles. The center is a 3.70 posi
 

Built6spdMCSS

Royal Smart Person
Jun 15, 2012
2,258
113
Florida Beach
Shouldn't be that much play on the ends. I pressed the Bearings on mine, installed the seal in each end and bolted up the retaining plates. No movement.
 
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johnnunez29

Greasemonkey
Thread starter
May 9, 2022
120
18
Shouldn't be that much play on the ends. I pressed the Bearings on mine, installed the seal in each end and bolted up the retaining plates. No movement.
Just to be clear. I’m talking about the rotation of the axle. I grab the hub, spin and have that amount of play. I’m and out there’s absolutely no play. It’s in there. Just in case that’s what you meant. I appreciate the fedback
 

Rt Jam

Master Mechanic
Mar 30, 2020
314
63
Ontario Canada
If the play is from spinning. That is not a linear number like 1/4". Report that as degrees of rotation.
All will have some what we call backlash. A tiny bit comes from axle splines, some from the differential but mostly pinion to ring gear clearance. How much is acceptable is impossible to diagnose from here but some is necessary, it will never be tight.
 

johnnunez29

Greasemonkey
Thread starter
May 9, 2022
120
18
Just to be clear. I’m talking about the rotation of the axle. I grab the hub, spin and have that amount of play. I’m and out there’s absolutely no play. It’s in there. Just in case that’s what you meant. I appreciate the fedback
Feedback*
Ahh, thought you meant in and out.

Yea that's perfectly normal, that's gear lash in the differential.
oh man. Lol I was like ‘this went too smooth , it never goes that smooth‘ thanks again!
 
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johnnunez29

Greasemonkey
Thread starter
May 9, 2022
120
18
If the play is from spinning. That is not a linear number like 1/4". Report that as degrees of rotation.
All will have some what we call backlash. A tiny bit comes from axle splines, some from the differential but mostly pinion to ring gear clearance. How much is acceptable is impossible to diagnose from here but some is necessary, it will never be tight.
If the play is from spinning. That is not a linear number like 1/4". Report that as degrees of rotation.
All will have some what we call backlash. A tiny bit comes from axle splines, some from the differential but mostly pinion to ring gear clearance. How much is acceptable is impossible to diagnose from here but some is necessary, it will never be tight.
My mistake. I have no way of calculating that degree. Aslong as that’s normal then I am good! . Just wanted to get some input . Thanks
 
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