I have been taking an intro mechanics class at the local community college. One of the mechanics there has a mid-eighties cutlass supreme with an LT-1 engine and I believe an early nineties trans am rear end. It does have a torsen differential, which he showed us when it was on the lift. I think (don't quote me) he said that with the 2.7 rear end gears it ran around low 14's.
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