Using a formula found on this site it looks like 2,000 rpm would yield 1,000 ft/min piston speed, which I gather is the low end of the sweet spot.
With 225/60 tires and the 4r70 gear set that would put me at about 63 mph.
With the same tires and the aod gears I'd be at around 66 mph.
With 4r70 gears and a 2.73 ring and pinion that would be almost 83 mph.
I'm sure it's just another bit of data to be taken into account when trying to dial in the best compromises in all aspects of f.e. for an ecomod set up and not THE deciding factor but that seems to indicate the 3.55's may not be so bad after all.
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'99 Crown Victoria
'97 Impreza 2.2, 5-speed
'98 Impreza Outback Sport 2.2, 5-speed
'05 Outback 3.0R (wife's)
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