Well......live and learn.
Seems my 9 spd is a direct drive and I have 3:55 rearend. If we drop down to one step on rear gears, only drop 200 or so RPMs and not pu much top end.
So changing the trans to a 9 spd with overdrive...chart shows 1500 RPM @ 66mph....1800 rpm @ 80 mph
Economics don't make sense, never recoup costs vs fuel consumption, but much better on the engine long term than the current 2100 rpm @ 71 mph (and I can actually run the posted speed limit on open highway.)
Additional benefit will be everything from the clutch back will be inspected, PM'd and in perfect order.
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