Editor’s Note: The year 2013 gave us the C7 Chevrolet Corvette and took from us performance legends like Dean Jeffries and Stu Hilborn. We had a light-hearted look at the half-dozen Fast and Furious movies and got serious with dozens and dozens of new tech articles and how-tos. We even put a hot rodder’s spin on March Madness and Fantasy Football. All told, there were over 550 new articles from OnAllCylinders in 2013.

Before we turn the calendar to ’14, we’re taking a look back at our most-popular, most-read articles of 2013. In case you missed them, here are the Top 5 tech and how-to posts from the past year.

1. Cheat Sheets: 13 Key Automotive Formulas You Should Know

You may want to go back to this article and bookmark it. Or print it out. Or do whatever it takes to have these 13 key automotive formulas handy for your next project. What are the 13 Key Automotive Formulas You Should Know? Read the article and found out—’cause if you ain’t cheatin’, you ain’t tryin’.

2. The 10 Commandments of Handling Valve Springs

Think you’ve got stress? Try being a valve spring in an automotive valvetrain.

Valve springs are among the most-stressed mechanical components in an engine, but we worked with COMP Cams to provide some tips to preserve and protect the durability of your valve springs during handling and installation.

3. How to Set Valve Lash

Setting valve lash is an essential skill for any engine builder. This video tech post covers the ins and outs of this all-important process, including the tools needed and steps required for setting lash on both hydraulic and solid lifters.

4. Blower Basics: Part 1

The first in a three-part series on superchargers, Blower Basics: Part 1 covers the key differences between Roots, screw-type, and centrifugal superchargers and provides an introduction to boost. It also includes key supercharger terminology that you need to be familiar with before adding forced induction to your ride.

5. How to Match Air Filter Size to Your Engine

Your air filter has a dirty job. It’s primary purpose is to keep contaminants and debris out of your engine; however, a properly sized air filter is also important to the performance of your vehicle.

In this post, Wayne Scraba discusses the importance of optimal air filter size and provides the equation for determining the right filter dimensions for your hot rod.