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!

What’s New

Version 22.1.2

Fixed compression ratio calculator error that prevented using negative values for domed pistons.

Ratings and Reviews

1.7 out of 5
7 Ratings

7 Ratings

BlownHemi ,

Used to work great

Needs an update to work with the current IOS. It’s practically useless because the keyboard is off the screen so you can’t enter any values for the data. Please update ASAP!!!

Podcastersrule ,

Awesome app

Excellent app for your car. It's the most professional looking app ever created. It is worth every penny.

titan112233445566 ,

App update

Please update the app because when I open it, the app does not even display and I would really like to use it especially after having to pay for it


Alfredo Ramirez Garcia
41.7 MB

Requires iOS 13.6 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

More By This Developer

You May Also Like