Tech Articles

Here's the photo of D.W.'s in-progress engine build. (Image courtesy of Jeff Smith)
Q&A / Tech Articles

Ask Away! with Jeff Smith: Setup Recommendations for a Supercharged EFI & Nitrous Combo

I am building a 355 cubic inch small-block Chevy with AFR 1065 220cc Race Ready AFR heads, an Erson roller cam, and FiTech fuel injection. Can I use a wet […]

(Image/GM EFI Magazine)
LS Engines / Tech Articles

LS Tech: How to Delete Variable Valve Timing (VVT) on an LS Engine

Variable Valve Timing (VVT) is a system that automatically adjusts valve timing. GM used VVT on the following engines within the LS family. (Summit Racing’s Paul Spurlock and Brian Nutter contributed […]

How to Delete or Disable Active Fuel Management (AFM) on GM Engines
LS Engines / Tech Articles

How to Delete or Disable Active Fuel Management (AFM) on GM Engines

Active Fuel Management (AFM) is a trademarked General Motors technology that improves gas mileage by shutting down half of the cylinders under light-load conditions to reduce fuel consumption. It is […]

Here's a manual boost controller, adjustable via knob on the controller's housing. (Image/
Tech Articles

Turbo 101: An Introduction to Mechanical and Electronic Boost Controllers

Turbochargers are becoming a go-to power adder, and not just for imports. Chevy and Ford currently have turbocharged engines in their lineup, and even the new Jeep Wrangler is expected […]

This is the wishbone suspension from a vintage Matra Formula 1 race car. (Image/
Tech Articles

What is a Wishbone Suspension and How Does it Work?

When someone tells you their car or truck has a “wishbone suspension,” it’s not turkey-talk. They’re referring to a specific type of suspension design that allows the vehicle’s wheels to […]

This fusible link did its job. It overheated and broke the electrical connection before any critical parts could be damaged. (Image/
Tech Articles

Fusible Links: What Are They and Where Do They Go?

Fusible links—also spelled fuseable and fusable—serve a similar purpose to a fuse. (You can read more about fuses here.) Just like a fuse, the link is designed to handle a […]

Selecting the right gear oil is critical to the life and performance of your manual transmission. (Image/Tremec)
Tech Articles

Gear Oil 101: Which Lube is Right for Your Manual Transmission?

Similar to what we discussed in our Automatic Transmission Fluid 101 post, selecting the right gear oil for your manual transmission isn’t as easy as it might seem. There are […]

Porsche's 928, developed in the 1970s, shares the same aft-mounted transmission/transaxle setup found in 1997+ Corvettes. (Image/Jalopnik)
Tech Articles

What is a Transaxle and How is it Different than a Transmission?

Quickly, what does a Porsche 911 and a 1961 Pontiac Tempest have in common? If you said “they both have a transaxle,” then you probably read the headline of this […]

(Image/Corvette Forum)
Tech Articles

How to Remove Rusted Bolts and Loosen Stuck, Seized or Frozen Nuts and Bolts

A rusted, seized bolt or nut can turn an easy project into a nightmare. In fact, mechanics have been known to hold a lucky rabbit’s foot or refuse to work […]

Tech Articles

Return or Returnless: Which Fuel System is Right for You? (Video)

Returnless fuel systems are becoming more common in new vehicles. As we learned in a recent Jeff Smith Ask Away! column, the increased use is due in part to tightening federal […]