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09-20-2021, 05:41 PM
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#1 |
 
Drives: Ashen grey, 1SS, L99 Join Date: Aug 2016
Location: Oklahoma
Posts: 526
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Rear knuckle question
What is the part number for the upper control arm bushing on the knuckle? I have looked and found no clear answer. Or what is the best upgrade for the knuckle bushings?
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Roto-fab CAI, Nick Williams 102mm TB, LOD X1 V3 intake manifold, GMPP LS3 heads, Night Fury cam, TSP 2” long tubes, Corsa ZL-1 catback, Nitrous Outlet 102mm plate kit/150 shot, NGK BR7EF plugs with Taylor plug wires, DSX flex fuel kit, ZL-1 fuel pump and injectors, B&M deep trans pan, Yank 3400 converter, 3.45s with BMR Delrin bushings, mishimoto 169° Thermostat, GM ground effects, T-Rex upper grill, Z/28 Spoiler, Lolly pop Lime brake calipers, ZL1 10 spoke wheels, 12” subwoofer, and custom paint matched interior.
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09-20-2021, 06:04 PM
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#2 |
      Drives: 2010 Camaro SS2,L99, LSA SC Join Date: Aug 2017
Location: Huntsville, AL
Posts: 2,154
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I don’t think that is considered a serviceable item by GM. Don’t know about the aftermarket. I replaced my knuckles with Z28.
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09-20-2021, 06:32 PM
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#3 | |
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Drives: Ashen grey, 1SS, L99 Join Date: Aug 2016
Location: Oklahoma
Posts: 526
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Quote:
__________________
Roto-fab CAI, Nick Williams 102mm TB, LOD X1 V3 intake manifold, GMPP LS3 heads, Night Fury cam, TSP 2” long tubes, Corsa ZL-1 catback, Nitrous Outlet 102mm plate kit/150 shot, NGK BR7EF plugs with Taylor plug wires, DSX flex fuel kit, ZL-1 fuel pump and injectors, B&M deep trans pan, Yank 3400 converter, 3.45s with BMR Delrin bushings, mishimoto 169° Thermostat, GM ground effects, T-Rex upper grill, Z/28 Spoiler, Lolly pop Lime brake calipers, ZL1 10 spoke wheels, 12” subwoofer, and custom paint matched interior.
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09-21-2021, 06:56 AM
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#4 |
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Drives: 2014 1le 1SS CRMT Join Date: Apr 2014
Location: Boston mass
Posts: 1,178
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I did the Z28 knuckles.
I was told i got the last right side in the country Just replace your bushings with BMR ones you’ll be good |
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09-22-2021, 01:53 AM
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#5 |
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Banned
Drives: 2010 LS Join Date: Feb 2021
Location: Pgh
Posts: 411
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The UPPER and LOWER bushings in the Knuckle are SPHERICAL bushings. There
are no replacements, unless you have a 16+, and they're $500+ for the set. There is a thread on this already, I am not typing it all in again... Those bushings help retain camber angles with cornering. If you can find any POLY or RUBBER replacement, it will work, but you will feel the difference. Also the UCA inner bushings is also Spherical, and there is a POLY replacement for that. |
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09-23-2021, 10:08 AM
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#6 | |
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Drives: Ashen grey, 1SS, L99 Join Date: Aug 2016
Location: Oklahoma
Posts: 526
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Quote:
__________________
Roto-fab CAI, Nick Williams 102mm TB, LOD X1 V3 intake manifold, GMPP LS3 heads, Night Fury cam, TSP 2” long tubes, Corsa ZL-1 catback, Nitrous Outlet 102mm plate kit/150 shot, NGK BR7EF plugs with Taylor plug wires, DSX flex fuel kit, ZL-1 fuel pump and injectors, B&M deep trans pan, Yank 3400 converter, 3.45s with BMR Delrin bushings, mishimoto 169° Thermostat, GM ground effects, T-Rex upper grill, Z/28 Spoiler, Lolly pop Lime brake calipers, ZL1 10 spoke wheels, 12” subwoofer, and custom paint matched interior.
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09-23-2021, 10:31 AM
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#7 |
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Drives: 2010 Camaro SS2,L99, LSA SC Join Date: Aug 2017
Location: Huntsville, AL
Posts: 2,154
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I think the part about spherical bushings is only for the Z28 knuckles.
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09-25-2021, 02:19 AM
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#8 | |
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Banned
Drives: 2010 LS Join Date: Feb 2021
Location: Pgh
Posts: 411
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Quote:
I have a V6, and they're spherical, and so is the inner UCA. I mean, you can SEE the difference, and you can pivot the spherical ones with your hands!   If you can't see the difference, well, then good luck to ya... ALL the Gen5s have them in the same spots. They are in the knuckle specifically for wheel track; to keep the most tire on the ground under all conditions. |
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