Tech Articles

Ask Away! with Jeff Smith: Does 40% Leakdown Test Results Require New Piston Rings?

by Jeff Smith × on October 2, 2018 at 4:41 pm × 4 comments

I just bought a used 5.3L LS engine out of the junkyard and after we got the engine back to the shop and mounted it on an engine stand, we […]

Tech Articles

Ask Away! with Jeff Smith: Diagnosing Ticking Noises and White Smoke in a Supercharged ’93 Ford Mustang GT

by Jeff Smith × on September 28, 2018 at 11:37 am × 1 comment

I’ve been looking online for help to figure out what is happening to my car and I thought your expertise may help. I have a supercharged ‘93 Mustang GT with […]

Tech Articles

How to Set-Up and Tune Holley’s Dominator EFI System (Part 1)

by Wayne Scraba × on July 6, 2018 at 11:47 am × 3 comments

It’s no secret that aftermarket electronic fuel injection (EFI) systems are becoming more and more commonplace. It should come as no surprise however, that some of the early systems were […]

Tech Articles

Comparing Camshafts (Part 2): Consider Individual Timing Events When Choosing a Cam

by Brian Nutter × on July 2, 2018 at 1:05 pm × 5 comments

Editor’s Note: This is the second half of an article on how to interpret cam specs to select the right cam for your engine and vehicle needs. You can read the […]

Tech / Tech Articles

Comparing Camshafts: A History of Camshaft Specs and Choosing the Right Cam

by Brian Nutter × on June 29, 2018 at 10:50 am × 7 comments

Have you ever wondered why one camshaft makes more power than the other? Would you like to compare the behaviors of multiple cams without ever doing a cam swap? Written […]

Here’s a look at a camshaft in the process of being degreed. As you can see, the cam is driven by a Jesel belt drive, which simplifies the process dramatically (but that's another story). The 14-inch degree wheel is from B&B while the pointer is homemade. (Image/Wayne Scraba)

Tech Articles

Camshaft Degreeing Explained: Tools & Techniques for Degreeing a Cam

by Wayne Scraba × on June 12, 2018 at 4:47 pm × 1 comment

When a camshaft is “degreed” it means the camshaft position in the engine has been synchronized with the crankshaft position. Degreeing the cam is the only positive means to determine […]

In our very unscientific test, we immersed this strip of sheet aluminum in E85 for 9 months. We allowed the fuel to completely evaporate followed by full immersion. Note the presence of actual rust on the aluminum. This wipes right off and is probably due to metal particles that were present in the tub when we added the fuel. There was evidence of very minor pitting in the aluminum strip but hardly worthy of comment. The Holley metering block was also not damaged and showed no sign of damage or corrosion. (Image/Jeff Smith)

Tech Articles

Ask Away! with Jeff Smith: E85 Pump-Gas Additives—Not Ethanol—Cause Corrosion

by Jeff Smith × on May 25, 2018 at 1:47 pm × 2 comments

Hi, I was wondering if you could help answer a few questions and doubts I have about moving forward with my E85 build. I know there’s a lot of hype […]

Tech Articles

Mailbag: How to Fix an Oil-Burning 1989 GMC 1500 4×4 Pickup

by OnAllCylinders Staff × on May 21, 2018 at 11:25 am × 2 comments

Q: The culprit is a 1989 GMC 1500 4×4 with a 350, automatic with overdrive, a 3.42 axle, and over 150,000 miles. It has recently developed a powerful thirst for […]

This is a comparison of a cold heat range plug (left) versus a much hotter heat range plug (right). Notice how the distance between the ceramic and the spark plug shell on the hotter plug requires heat to travel a farther distance, which maintains more heat in the spark plug. A hotter heat range plug is preferable for engines that only see light duty applications as in mild street driving. (Image/Autolite)

Tech Articles

Ask Away! with Jeff Smith: Determining Correct Spark Plug Heat Range

by Jeff Smith × on May 11, 2018 at 4:55 pm × 7 comments

How do I tell the correct heat range spark plug for an engine? – Mark S. Jeff Smith: Simple questions sometimes require a bit longer answers. This is one of those […]

Product Profiles / Tech Articles

What is a Transmission Jack & How to Choose the Right One for Your Ride

by Paul Sakalas × on May 4, 2018 at 11:03 am × 1 comment

A transmission jack is a must-have tool if you’re removing or installing a transmission. Now, while a lot of gearheads have made-do with improvised solutions for hoisting/moving a transmission, the […]

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