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Featured Articles

Speed Secrets: How to Choose a N/A Camshaft

How to Choose a N:A Camshaft

Richard Holdener explains how to choose camshafts for naturally aspirated engines in this episode of Speed Secrets. Comp Cams offers camshafts for Ford, Chevy, Dodge, and a lot of imports as well as specific applications. With so many options available for just about any project, you can imagine it can be a bit confusing. Richard Holdener with Speed Secrets and ... Read More »

Speed Secrets: What’s So Great About the FAST LSXR Intake?

Speed Secrets: What’s So Great About the FAST LSXR Intake?

When GM designed the LS1 engine, they didn’t give it an intake to do it justice. Thankfully, FAST came up with a solution. Richard Holdener explains the magic behind the FAST LSXR intake in this episode of Speed Secrets. Of all the intake manifolds GM has produced over the years, the LS1, the beginning of arguably the best GM engine ... Read More »

Speed Secrets: Are Small Block Chevy Cam Swaps Like LS Cam Swaps?

Speed Secrets: Are Small Block Chevy Cam Swaps Like LS Cam Swaps?

Can you get the same kind of gains from Small Block Chevy cam swaps as the LS guys? Find out in this episode of Speed Secrets with Richard Holdener. Chevys revolutionary LS based engines seem to be an anomaly. With the way these engines respond to even mild cams, it makes you wonder how it can be so superior to ... Read More »

Speed Secrets: Choosing the Right Cam for a 347 Ford Engine

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Having a 347 cubic inch stroker Ford means you can do more with your cam, but picking one out can be tricky, Richard Holdener is here to help. Richard Holdener at Speed Secrets once again teams up with Comp Cams to build a mean small block stroker Ford engine. What makes a stroker engine unique is the increased length in ... Read More »

Speed Secrets: Cam Swapping Your 3/4 Small Block Chevy

3:4

Richard Holdener tells you what you need to know about cam swapping your 4.3-liter V6 in this video of Speed Secrets. To find out how well the ever popular 4.3L V6 would respond to a cam swap, they start off with a fresh rebuild of the 4.3L engine and put it on the dyno. Although originally this engine had an ... Read More »

Dynamic Daily: Dr. Jekyll Meets Mr. Hyde

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By Richard Holdener/Photos By Author This is how you make your mild, carbureted 4.8L Dr. Jekyll becomes Mr. Hyde.     When it comes to power plants for an enthusiast vehicle, most guys have one of two distinct types, wild race car or mild daily driver. In truth, many have both, as the cantankerous race-car motor hardly makes for a reliable, ... Read More »

Modern Muscle: Zex-Injected DI L83

Nothing wakes up a new direct-injected, LT-based motor like a little Zex!

 Like anything new, the arrival of the junkyard L83 5.3L at Westech was met with a certain amount of skepticism. Having run endless testing on the previous generation LS engine family with tremendous success, we really didn’t know what to think about the new direct-injected LT motor. The LS was such a huge jump in performance over the previous Gen-2 ... Read More »

Sullivan Family Purchases the COMP Cams Super Dirt Series

Chris Sullivan - Jack Sullivan - Woody Hampton photo

By Ben Shelton Conway, Arkansas (12/04/18)– When the COMP Cams Super Dirt Series presented by Lucas Oil kicks off their 2019 campaign in March, it will be operating under new ownership. Racing world veterans Chris Sullivan and Jack Sullivan have purchased the tour, effective immediately. The sale comes as series founder Chris Ellis is forced to step away from the ... Read More »

The Trade Parade: 2V Modular Cam Upgrade

One of the most powerful upgrades you can make to your 4.6L 2V is a cam swap.

By Richard Holdener/Photos By Author Now that the 5.0L Coyote has taken center stage, few eyes are fixed on the 1996-2004 Mustangs. Truth be told, the 4.6L two-valve (2V) was introduced way back in 1991 in other Ford vehicles, but it wasn’t until 1996 that it found a home under the hood of America’s favorite pony car. When first introduced, the ... Read More »

Clone Wars: 289 Shelby Stroker

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By Richard Holdener/Photos By Author What looked like a Shelby 289 Ford, was actually a Comp-cammed, stroker ready for some serious action. If you are a Mustang, or even Ford fan, chances are strong that you have heard the name Shelby. An accomplished racer, Mr. Shelby was best known for providing the world with one of the most widely recognized automotive ... Read More »