My '92 vette gets best mileage at 45 MPH where it just locks up in to 4th. About 32 MPG. Best complete tank full 30.0 MPG. all freeway. Rear gears are 2.59. Oh, yeah, with the pedal to metal it shifts into 4th at 126 MPH. The mileage? I didn't notice, but at that speed only once.
Last edited by diesel_john; 02-11-2010 at 09:07 AM..
Reason: clarity
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