Tech Articles

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 […]

Some old habits die hard. That applies to many things, but certainly to hot rods and street/strip cars. Take the basic clutch for example: In the 1970s, the clutch package […]