Tech Articles

Since fitting an air intake tube and MAF sensor in a retorfitted engine bay is often difficult, many aftermarket EFI conversion kits rely on Speed Density systems. (Image/FiTech)
Tech Articles

EFI 101: Mass Air vs. Speed Density — What They Are & Which is Best for Your Ride

If you’re researching electronic fuel injection (EFI) systems, you’ve probably come across the terms speed density and mass air flow (MAF). These are the two most prevalent types of fuel […]

This photo shows the reluctor wheel installed onto the crank, with the installer tool removed. (Image/Mike Mavrigian)
Tech Articles

Installation and Removal Tips for LS Engine 24x or 58x Reluctor Wheels

Any builder familiar with late model engines knows that an engine’s computer control system monitors both camshaft and crankshaft position in order to achieve correct spark and fuel delivery. Many […]

Video: Measuring Power & Torque Gains From a Cam Swap in a 5.0L Ford
Tech Articles / Tech Projects / Videos & Galleries

Video: Measuring Power & Torque Gains From a Cam Swap in a 5.0L Ford

In today’s video, engine builder Richard Holdener is going to show you the dyno results of a previously modified 5.0L Ford engine before and after a cam swap (and unplanned […]

(Image/Summit Racing)
Tech Articles

Ford Windsor and Modular Engine External Dimensions

Want to swap a Modular or Windsor Ford engine under your hood, but aren’t sure it will fit? Well, the folks at Ford Performance are here to help you out. […]

(Image/Wiseco)
Tech Articles

Piston Ring Parlance: A Glossary of Piston Ring Terms

Piston rings have a dictionary all to themselves, and it’s important to be familiar with the terms before you begin an engine build. The piston pros at Wiseco put together this […]

(Image/Summit Racing)
Tech Articles

Ford Engine Bore and Stroke Guide

The Ford engine family tree has a lot of branches. You’ve got the venerable Windsor small block, plus the 385-series and FE-series big block branches, along with a trio of 351 […]

Getting this old ‘bird back on the road will be a free-for-all cage match with willpower, rust, and a venomous spider all vying to claim ownership of this first-gen F-body. (Image/Steve Baur)
Tech Articles

Pontiac Prizefight: Restoring a 1969 Firebird (Part 1)

If you’re into cars, then there’s a good chance that at some point you have wanted a muscle car. Unfortunately, the days of picking up a popular model on the […]

Next, we measured from the axle-housing flange back toward the plumb line. The passenger side measured 25.875-inches while the driver side checked out at 26.875-inches. What’s going on here? Even though the axle tubes welded to the center section are exactly the same width, there’s an inch difference in actual axles. That is the pinion offset. To double-check the numbers, add the pair of measurements together (25.875-inches + 26.875-inches = 52.750-inches). They should be the same as the axle flange-to-axle flange number. (Image/Wayne Scraba)
Tech Articles

Axle Exchange: How to Measure a Rear End to Fit Custom Axles

Adding big power to your car regularly comes with consequences. Hardware that normally doesn’t flinch is suddenly hard pressed to keep up with the demand. Add big, sticky tires and […]

(Image/MustangandFords.com)
Tech Articles

Ford Alphabet Cam Specs: E303 vs. B303 vs. F303 vs. X303

Ford’s famous Alphabet Cams (a.k.a. Letter Cams) have been around for decades and are often the go-to choice for Mustang owners looking for more performance from their 5.0L engine. Ford Performance […]

Fuel Duel: Race Gas vs. E85—Which Makes More Power?
Tech Articles

Fuel Duel: Race Gas vs. E85—Which Makes More Power?

Gasoline or E85 ethanol-blended fuel? David Freiburger and Steve Dulcich at Engine Masters wanted to find out which makes more power and by how much. So they grabbed a 489-cubic-inch, 13.5:1 compression […]