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Old 03-18-2015, 12:04 PM   #2
hammdo
'It's an experiment'
 
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Drives: [COTW 2/09/15] '11 GPI LSA SC Z/LE
Join Date: May 2014
Location: Dallas TX
Posts: 8,709
Did it on mine and love the 3.91s -- the auto is geared deeper so 1st and 2nd are a challenge but, I did love them. Really wakes up the car. The 3.91's I had were from GM so they were designed and meant for the car....

I have 3.45s now as I'm SC'd -- but before I changed them, they would just spin the wheels with the SC -- really something...

-Don
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