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Another 2005 corvette diff question

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Old Dec 3, 2022 | 11:21 AM
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Default Another 2005 corvette diff question

Hello, looking into differential options for my 05 M6 before I start making more power.
I have looked on the forums here for weeks and cant find an answer to my only question.
I am going to get the 06/07 transmission extension case. I know it says 06+ differentials will work with this.
My question is, can this work with an 08-13 base (non z06/grand sport/zr1) 3.42 differential? I know they have the same 27 spline.
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Old Dec 7, 2022 | 10:29 AM
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Old Dec 7, 2022 | 03:12 PM
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St. Jude Donor '08-'09-'10-'11-'12, '14-'15-'16-'17-'18
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Originally Posted by Scottp3
Hello, looking into differential options for my 05 M6 before I start making more power.
I have looked on the forums here for weeks and cant find an answer to my only question.
I am going to get the 06/07 transmission extension case. I know it says 06+ differentials will work with this.
My question is, can this work with an 08-13 base (non z06/grand sport/zr1) 3.42 differential? I know they have the same 27 spline.
You can use any (manual transmission equipped) base/Z51 differentials from 2006 to 2013. These will have 27 splines that will work with your 05 T56.

BTW, the 06-07 base tail housing have been discontinued from GM. We have new units available.
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Old Dec 7, 2022 | 03:43 PM
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Originally Posted by Rick@RKT Performance
You can use any (manual transmission equipped) base/Z51 differentials from 2006 to 2013. These will have 27 splines that will work with your 05 T56.

BTW, the 06-07 base tail housing have been discontinued from GM. We have new units available.
Thank you so much! Whenever I'm ready I will call the shop for this and pricing.
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Old Dec 7, 2022 | 03:46 PM
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Rick@RKT Performance
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From: Frederick Maryland
St. Jude Donor '08-'09-'10-'11-'12, '14-'15-'16-'17-'18
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Originally Posted by Scottp3
Thank you so much! Whenever I'm ready I will call the shop for this and pricing.
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