VDCalc

VDCalc is a subset of our Virtual Dyno app. It features several automotive calculators that range from correct injector sizing for your engine, to simple conversions from CC's to cubic inches.
You can enter new engines and save them or select engines from the supplied database. From there you can get the total displacement and estimated compression ratio of that engine. VDCalc has a very nice injector sizing section that handles supercharged or naturally aspirated engines. It uses the standard calculations used by all manufacturers.

This is not a dyno app so it does not predict performance or HP values. It is just a set of wuick and dirty calculators that can give you and idea of performance in ideal conditions. VDCalc does not have a physics engine like Virtual Dyno, so these are strictly estimates.

Currently, the app includes calculators that estimate

HP required for MPH in 1/4 mile and weightMPH from HP and weightTorque to HPHP to TorqueET in 1/4 from HP and weightET in 1/4 from MPH in 1/4CC to cubic inchesCubic inches to CCCam duration @ 0.050 from advertised durationMPH, tire dia., & RPM to gear ratio

We hope to add more in the future as we (and you) run across ideas.