Tech Articles

Tech Articles

Installing a Hotchkis Sport Suspension Kit on a 1981 Chevy Camaro

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 […]

Tech Articles

Old vs. New: Comparing Vintage and Modern Intake Manifold Design

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 […]

Tech Articles

Mailbag: Explaining Valve Overlap for Camshafts

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 […]

Tech Articles

Ask Away! with Jeff Smith: Tuning an Edelbrock 1406 Carb to Cure Fat-Running ’72 Jeep CJ-5

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 […]

automotive fittings - photo by Hot Rod
Tech Articles

AN Fittings Torque Chart for Automotive Plumbing

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 […]

Tech Articles

Improving Hook with Sway Bars on Drag Cars

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 […]

Tech Articles

Piston Ring Compressors: Different Strokes for Different Folks

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 […]

Tech Articles

It’s No Theory: How to Contain Carnage from the Big Bang Clutch Explosion

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 […]

Tech / Tech Articles

Ask Away! with Jeff Smith: 4L60E vs. 200-R4 Transmissions

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 […]

Tech / Tech Articles

Four-tify Your LS: Summit Racing Stage 4 Pro LS Camshaft Test

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 […]