Tech Articles

In the high-performance world, nothing ever remains stock. That makes it difficult for aftermarket companies to design parts and kits that are true, easy bolt-ons for every car—where literally nothing […]

Intake manifold technology has progressed by leaps and bounds over the years. (Or, has it?) Additionally, there are many more players in the intake manifold business than we saw years […]

Q: What is valve overlap? … A: Overlap is when the intake and exhaust valves are open at the same time. It is expressed in degrees of crankshaft rotation. Not […]

I have a 1972 Jeep CJ-5 with a 3.73:1 gear and 33-inch M/T tires. The engine is an AMC 360 rebuilt with 8.75:1 compression, stock heads, and a COMP Thumper […]

AN stands for Army-Navy. The size specifications were established by the U.S. military during World War II and were originally used in the aerospace industry. AN fittings use a 37-degree […]

In the past, we’ve taken a look at the forces at work when a vehicle is accelerating. To recap: “…as each cylinder in the engine fires, the pistons (and consequently […]

When installing pistons, the first step is to wipe the cylinder bores with a clean, lint-free towel, and apply a small amount of conventional (non-synthetic) oil to the walls. It’s […]

More than 40 years ago, a friend came hobbling into my shop on crutches. His right foot was in a cast. He wasn’t very happy. As the story goes, he […]

I think I just tore up my second 200-R4 transmission running back and forth to the NSRA street rod show in York, Pennsylvania.  I had a Turbo 400 in my […]

So what would you do if a company called you and offered up a 5.3L test motor? Now what if these same guys gave you their blessing to throw the […]