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Old 04-19-2016, 05:26 PM   #91
Mild2Wild
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Join Date: May 2012
Drives: Firestorm FR-S
Location: Rochester, NY
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[QUOTE=BRZoomTX;2626797]Go with 3.73's. 3.90's won't be worth it enough. With 3.73's and stock tire height, my 4th gear tops out at over 120. Forgot the exact number, depends on how high I'd rev it up.

No issues at all putting around town with 3.73's. I run a m85 LSD diff on my car like many others. Direct bolt on replacement, find one to use out of an is300.

Reference below. 3.73 rear, stock tire height, 15psi was about ~370whp for me on a dynojet.


Damn that video was a pretty great demonstration of exactly what I wanted to see--thanks a lot; I hadn't been able to find anything on youtube. It's been problematic to locate even an m85: only one is on eBay, but it's from Quebec and looks a bit sketchy. The video solidifies 3.73 as a much better choice though it seems.
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