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07-05-2020, 10:41 AM
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#1 |
 Drives: 2011 Camaro SS Join Date: Jul 2017
Location: Wichita,KS
Posts: 603
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GM 8.6 gear sets.
Can anyone tell me if our stock 8.6 IRS gear set is different then the 10 bolt 8.6 gear sets that are available. I'm needing a install kit with a 3.73 gear and its listed for a 8.6 10 bolt but I'm not sure if the 8.6 IRS uses a different gear sets. Thanks.
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2011 Camaro 2SS, 6.0 iron block forged bottom end, Dart heads, BTR intake, Huron twin turbo kit, Summit stage 3 twin turbo cam, Circle D stage 4 6L90, 3800 FTI converter. BMR suspension, Viking coil overs, Fore triple pump fuel system.
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07-06-2020, 11:32 PM
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#2 |
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Drives: 2014 1ss camaro Join Date: Jul 2017
Location: missouri
Posts: 705
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I think they are different. t went thru lingenfelter and bought 3:70 for my true track install . I think the pinion gear is different. but sadly I'm only guessing
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07-07-2020, 01:22 AM
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#3 |
          
Drives: 2015 Summit White 2SS 1LE Join Date: Feb 2012
Location: Vance Alabama
Posts: 8,019
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My understanding is the bearing spacing is different besides the obvious alignment dowel for the guibo mount not being present on the 10 bolt pinion gear.
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07-07-2020, 07:48 PM
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#4 |
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GPI Sales Consultant
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You want the gears specific for the 8.6 IRS. We carry 3.91s and 4.11s at GPI - if I can help you get a set let me know with a message.
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GPI Max Package 2.0: Brodix BR7 heads/GPI porting, MAX3 cam, ST2116LSR, BSR Max Lift rockers, LS7 LSXR with 103mm TB, Vararam OTR, Mcleod RXT, G-Force/Strange 9" IRS setup with 4.63 gear. 551whp, 11.1@124mph.
Got a question about a GPI product? Feel free to shoot me a message!  |
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07-07-2020, 09:53 PM
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#5 |
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Drives: 2011 Camaro SS Join Date: Jul 2017
Location: Wichita,KS
Posts: 603
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Thanks guys. Yeah the gears and install kit are totally different. I think a 3.91 will be more gear then I'll need so i was hoping the cheaper 3.73 for the 10 bolt 8.6 would work. I guess I'll just go with the 3.45's.
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2011 Camaro 2SS, 6.0 iron block forged bottom end, Dart heads, BTR intake, Huron twin turbo kit, Summit stage 3 twin turbo cam, Circle D stage 4 6L90, 3800 FTI converter. BMR suspension, Viking coil overs, Fore triple pump fuel system.
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07-13-2020, 11:13 PM
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#6 |
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Drives: 2015 Summit White 2SS 1LE Join Date: Feb 2012
Location: Vance Alabama
Posts: 8,019
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3.91s are awesome unless using a power adder.
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