I was running 3.50 in my 9" and had to go back to stock 2.75 because the moron that I bought the chunk from didn't torque all of the bolts. It is a huge difference right there and I'm changing the 3.50 for 4.11. My engine doesn't like low rpms and the higher gear keeps it up there in the curve.
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65 Mustang fastback
347 DFI injected, TFS, too much to say
Just about everything custom
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