AC 427 Thread Checkers

Cleaning fuel injector nozzels is a must in your car maintenance regimen. Learn the steps on how to properly disconnect fuel lines and check the barrel valve.

Learn the proper steps in upgrading your air cleaner assembly to ensure clean air, allowing your engine to more easily make the power that it should.

Learn about thread sizing with this easy to read thread size chart!

The process of changing out a heater core in a 1957 Bel Air. This article discusses the assembly of parts and important tips to remember while changing out a heater core.

In this Tech Tip, John answers a customer question about finding the right axle length for his 1931 Model A.

In this Tech Tip, John offers up a couple solutions to a customer on the hunt for a coil over kit for his 2-door Model A.

Hooker headers are installed in a 1967 Pontiac Firebird for increased power and a boost in performance. See how to work through fitment of the steering box, clutch Z bar and starter.

There are several types of quarter-turn fasteners used in the performance automotive aftermarket and in this buyer's guide we'll help show you the correct fastener for your application and how some of the most common types of fasteners are used.

Check out a couple of tips on how to install a new clutch.

An overview on swapping turbo mufflers for chamber mufflers on a 1969 C/10 pickup. See how to extend the muffler length using exhaust pipe.