gardenman -
Very cool idea. I went here for a comparison :
Fatboy Raceworks Graphical Transmission Gear Ratio Calculator
And came up with this :
Transmission One represents my
MP2 5th gear swap. Transmission Two is identical except for the custom 0.510 5th gear.
I picked 1000 RPM as the "redline" because I wanted to know the minimum MPH needed to stay above the "lug line" of the engine. 1000 is roughly close to the idle RPM of the S-Series. Anything below 1000 RPM makes it hard to drive the car. This would actually force me to drive faster on average.
I plugged in other RPMs to figure out other MPH in 5th :
Code:
RPM 0.605 0.510
MPH MPH
1000 29.63 35.15
1200 35.55 42.18
1400 41.48 49.20
1600 47.40 56.23
1800 53.33 63.23
2000 59.25 70.29
It looks like ~1800 RPM would be your freeway RPM.
I am not in super hilly country, but if I were in pure flatlands, I might go for it.
CarloSW2