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The 1le has no advantage with the 3.91s. The trans ratios are different between the 1le & the ss. The 3.91s were added to the 1le to bring the overall ratios back equal to the ss with 3.45s. The only gear that the 1le has the advantage gearing wise is 4th. If you look at overall ratios (trans gear ratio multiplied be rear gear ratio) you will see that they are almost identical. Not knocking 1le's at all, just wanted to clarify as to why the 1le's got the 3.91s from the factory. 3.91s with an ss trans is fun.
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2012 2SS/RS 6speed, Howards asa cam on 113lsa Stainless works LT's, NPP exhaust, Z28 Cai, 3.91 gears. Tuned by Blue Thunder 2 racing Lubbock Texas.
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