The Low-Buck Callaway! Turbo TPI Test
Who remembers the late 80’s and early 90’s Callaway twin-turbo Corvettes? Introduced in 1987, the Callaway B2K RPO was offered as a regular production option right from Chevrolet. Check the […]
Author: Richard Holdener
Richard Holdener is a technical editor with over 25 years of hands-on experience in the automotive industry. He's authored several books on performance engine building and written numerous articles for publications like Hot Rod, Car Craft, Super Chevy, Power & Performance, GM High Tech, and many others.
What NOT to Do?!? A Carbureted M90 Blower Test
Just because we could do something, does that mean we should? ….Like adding a carburetor to an M90 supercharger? I know what you might be thinking: What’s the big deal? […]
Boosted Stroker Small Block! Vortech Supercharged 383 Small Block Chevy Test
How do we add power to an internal combustion engine? Well, the possibilities are endless, depending on the starting point. If we take a typical small block Chevy (though these […]
We Have Ignition! The Truth About Spark Plugs
Spark plugs are a critical element of any internal combustion engine. They are the proverbial wizard’s wand that ignites the air/fuel mixture to create the glorious and mysterious magic we […]
When Bigger is Better: 4.8L vs. 5.3L M90 Blower Test
What is the best way to make more power with a supercharger? The most obvious answer is to simply to add more boost, right? I mean if seven psi is […]
The Big Nasty! Summit Racing 5/4 LS Cam Test
Update: We found some good audio clips of this cam’s idle quality/note. We’ll post those videos at the end of the story. We also had a reader ask about torque […]
The LS Triumvirate: 5.3L Trick Flow GenX 220 Cylinder Head Test
Quick, name the three most effective components for improving power (not including power adders)? What did you come up with? Who said displacement? How about carburetion, compression or even headers? […]
The Light is Right! 4.8L LS Accessory & Flywheel Test
Is there any extra power to be had from removing the accessories or swapping out a heavy flywheel? The data we have from this series of tests is actually broken […]
Junkyard LS Blower: 4.8L Trick Flow 220 Cylinder Head Test
What do we want? Boost! When do we want it? Now! How much do we want to pay? Very little! Such is the conundrum experienced by fellow performance enthusiasts, I […]
A Slippery Slope: Conventional vs. Synthetic Oil & Viscosity Performance Tests
What happens when enthusiasts looking for greater performance either can’t afford the things that make big power changes, like heads, cam, intake and boost, or have already exhausted use of […]