Garage notes
ARTICLES
Long-form supporting articles that explain the math behind every calculator. Read these before you spend money on parts.
-
Drivetrain · 6 min · 4/11/2026
How to Choose the Right Axle Gear Ratio for Your Truck or Muscle Car
A 4.10 vs 3.73 decision sounds small until you commute on it for a year. Here is how to pick gears that match your engine, tires, and how you actually drive.
Read article → -
Engine · 5 min · 3/27/2026
Static vs. Dynamic Compression Ratio: What Actually Matters for Detonation
Builders quote static CR like it is the whole story. Dynamic compression is what your fuel and ignition system actually has to survive. Here is the difference.
Read article → -
Performance · 7 min · 3/9/2026
Quarter-Mile Prediction Formulas: Wallace, Fox, and Hale Compared
Three classic formulas predict ET from horsepower and weight, and they all give different answers. Here is when each one is most accurate.
Read article → -
Fuel · 6 min · 2/21/2026
Why Your Real-World MPG Is Lower Than the Window Sticker (and How to Close the Gap)
EPA test cycles are run on a dyno in a lab. Your commute is not. Here is what really hurts fuel economy and the changes that actually move the needle.
Read article → -
Financial · 5 min · 2/4/2026
Auto Loan APR vs. Lease Money Factor: Reading the Real Numbers
Dealers quote money factor as a decimal like 0.00125. Multiply by 2400 and you get the APR equivalent. Here is how to spot the markup.
Read article →