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Gearing Calculator (since F-body.org.gears is gone)
I built a new one since the one I, and I think a lot of folks were using (f-body.org/gears) died.
I figured I would pass it on to help anyone out that might want to compare gearing with different transmissions, rear gear ratios, converter slip, shift drop, etc. You can graph side by side (graph 1 and graph 2) to see what changes will do.
I've got most of the popular GM transmissions in it already (4l60, 4l80, 350, 400, 6l80/90, 6l90, t56, tr6060, etc.)
If you'd like any additional features let me know.
Pretty interesting....All things equal between the two except converter slip.
6% slip converter....(new converter should be....maybe less ?) Gear 1 Max Speed - 52 MPH at 7000 RPM
Shifting at 7000 RPM puts you at 4240 RPM in Gear 2
Gear 2 Max Speed - 86 MPH at 7000 RPM
Shifting at 7000 RPM puts you at 4664 RPM in Gear 3
Gear 3 Max Speed - 130 MPH at 7000 RPM
Cruising RPM at 70MPH in Gear 3 is 3816
17% slip converter (which my old one was)
Gear 1 Max Speed - 46 MPH at 7000 RPM
Shifting at 7000 RPM puts you at 4095 RPM in Gear 2
Gear 2 Max Speed - 76 MPH at 7000 RPM
Shifting at 7000 RPM puts you at 4563 RPM in Gear 3
Gear 3 Max Speed - 115 MPH at 7000 RPM
Cruising RPM at 70MPH in Gear 3 is 4212
How about adding a lock up option with no slippage for 3rd and 4th gear. Some of us lock the converter in 3rd gear while racing........ then the same feature for 4th would let us see highway speeds/rpm in overdrive.
Here is my dyno.. manuals are dynoing over 600 with my setup.. I take all kinds of **** for my dyno.. this car is a 454 c6.. runs like a raped ape.. I just ignore the idiots😂
04-07-2015, 06:08 PM
Gearing Calculator (since F-body.org.gears is gone) 
