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Old 11-03-2009, 08:20 PM
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Sharroll Celby Sharroll Celby is offline
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I have a 351W, alum heads and manifold, lumpy cam, and 3.23 gears, and the T5 with the .64 OD. At 80 in 5th, I am turning 1900 RPM. At 80 in 4th, I am turning 3000 RPM. The Cobra still accelerates in 5th gear from 80 MPH, but at quite a leisurely pace!

I am thinking about a gear change to 3.55s, to get more OOMPH thru the gears, and keeping the .64 OD.

I think the .64 OD would let you get by with a shorter gear ratio and still be able to drive on the freeway, without rattling the fillings out of your head. I have about 30,000 miles with this combo, and 80,000 miles (almost) with the .64 OD.
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