Tech Articles

Tech / Tech Articles

Turbo Clash: Ebay vs. Summit Racing Turbo

Turbos rule! If you are a turbo guy (or gal), there has never been a better time to be an enthusiast. Just look around…turbos are everywhere and on everything. Not […]

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 […]

Tech Articles

How Modern Clutch Tech Like Hays 650 Series Affects Shifting and Pedal Feel

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 […]