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Old 10-08-2018, 12:39 AM   #85
Pumpkin Carriage
3.6L M6 LS
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Drives: 2013 Camaro LS M6
Join Date: Jan 2018
Location: California
Posts: 1
15RS2NV, I did some research on rearend gear changes when I installed 3.73 ratio in my 13LSM. The Manual was a simple ring & pinion bolt in from Yukon Gears that I took to a reliable shop. What I found in my 3.73 ratio project came down to gear selection. Local Chevy dealer says 3.73 is not available from GM. The Chevy parts guy says a ‘13 LS M6 uses same ring & pinion as the LS3 but GM only offers 3.45 or 3.91 ratios. Yukon Gears offers a YG GM3.73-IRS ring & pinion. Here’s the bad news; Your auto probably is not the same rear end & you may need to swap the pumpkin to a manual V6 or SS. They’re available, that’s what I found for my M6 & the info for the auto came up while I was researching. That’s all I got, your newer model might be different.
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