What's New

Updated App framework to latest OS version.

App Description

Want to save time and money on mismatched parts? Would like to test before ordering parts?

Save time and money by experimenting with parts specs before permanent mods are made! Try different parts combinations until finding the desired displacement or compression ratio! The perfect tool for planning your next engine build!

The perfect Engine Calculator App for Professionals, Racers and Auto enthusiasts!

A true Professional-Grade App made by Professional Developers. This is not an App made by hobbyists!

Excellent user interface designed to provide the right look and feel of a performance tool!

This is what Engine Builder will do for you and your ride:

* Engine Displacement.

Calculate engine displacement in cubic inches or cubic centimeters. Experiment with overbores or stroked cranks! What if combine this block with that crank? You can do it with this App!

* Compression Ratio.

Static or dynamic compression ratio calculation! Easily determine your engine compression or experiment before purchasing pistons, head-gaskets or ordering machining operations! Need to choose a cam but need to know how will it affect your running C/R? You are just a few taps away of knowing!

* Deck Height.

Get your deck height based on your block's deck height, piston's compression height, rod length and crank stroke. No more guesstimating!

* Cylinder Head Power Potential.

Interested in a set of cylinder heads for your engine but would like to know the amount of power you can get out of them? Easy!

Just enter the head intake flow data and the number of cylinders of your engine and find out!

* Valve Lift.

Want more lift without a new cam? A quick and easy way of injecting 10-20 hp to an engine is with more valve lift! Depending on cam, head-flow, compression and other factors you can get away with more hp by simply swapping your rocker arms! Experiment with this calculator before ordering parts!

* Unit converters.

Convert cubic inches to cc's and cubic inches to liters.

* App includes valuable engine data like bore, stroke, rod length, block deck height, displacement in liters for Chevy, Ford, Mopar, AMC and Honda engines!

Examples provided for most of calculators!

You can't keep modifying your engine without this App! Download now!

Constant and free lifetime updates!

iPhone Screenshots

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iPad Screenshots

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App Changes

  • November 12, 2012 Initial release
  • March 15, 2013 New version 1.5
  • August 25, 2013 Price increase: $0.99 -> $3.99
  • August 29, 2013 New version 2.0
  • October 09, 2013 New version 2.1
  • October 12, 2013 New version 2.2
  • November 28, 2013 Price decrease: $3.99 -> $1.99
  • December 03, 2013 Price increase: $1.99 -> $3.99
  • January 08, 2014 New version 2.3
  • January 30, 2014 New version 20.4.1.0
  • May 13, 2014 New version 20.5.0.0
  • January 27, 2015 New version 21.0.2
  • April 15, 2015 New version 21.5.5
  • May 10, 2015 New version 21.6.0
  • May 21, 2015 Price decrease: $3.99 -> $1.99
  • May 22, 2015 Price increase: $1.99 -> $3.99
  • May 26, 2015 Price decrease: $3.99 -> $1.99
  • June 28, 2015 Price increase: $1.99 -> $3.99
  • January 01, 2017 Price decrease: $3.99 -> $0.99
  • December 24, 2019 New version 22.0.2
  • July 14, 2020 New version 22.1.1
  • October 23, 2020 New version 22.2.3
  • August 06, 2021 New version 23.0.0

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