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Articles by Richard Holdener

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richard holdener poses with an l99 engine on a dyno

TPI the L99! The 4.3L “Baby LT1” V8 Gets Torque

What the heck is an L99? We know GM uses these alphanumeric designations to label its many engine configurations, some of which were more notable than others. For instance, most […]
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a trio of turbochargers on a display table

Single or Twin Turbos—Which One is Better for Boosting Your LS Engine?

Is it better to run one big turbo or two smaller turbos? This is a very common question among enthusiasts, and while it usually comes down to packaging, a single […]
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ford 5.0L explorer engine on stand with trick flow performance parts

Exploring Growth Potential: Trick Flow Performance Upgrades to a 5.0L Ford Explorer Engine

To start things off, head on over to your local junkyard and snatch up a fresh 5.0L Mustang engine. …Wait, what’s that you say? This isn’t the late 1990s (or […]
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man installing intake manifold on ford 5.0 v8 enigne

Head Games! A Double Test of Trick Flow’s CNC 185 Cylinder Heads for Small Block Ford

Here is a simple question: Do cylinder heads help determine the effectiveness of your Ford combo, or, does the combo help determine the effectiveness of the heads? The reality is […]
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supercharged ford small block ion an engine dyno test run

Why Modify? 347 Small Block Ford Super Power

When it comes time to perform mods to your small-block Ford, gearheads have many choices. The choices include everything from basic bolts ons to pressurized power adders? Let’s not forget […]
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mopar gen 3 hemi engine on dyno with speedmaster velocity stack intake manifold for testing

Longing For a Hemi? Does Intake Runner Length Matter

The question is, does length matter? The answer is a BIG yes, especially if we are referring to intake runner length! You see, runner length plays a huge role in […]
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ford 351 cleveland engine on an engine dyno

Cleveland Show: Adding Nearly 100 HP to a Free-Breathing Ford 351C

Try this experiment: Mention four-valve (4V) Ford to a few fellow enthusiasts and see what discussion pops up. Oh, how quickly people forget! Time was when you mentioned 4V, people […]
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large single plane intake manifold on a 4.8 liter ls engine prior to dyno run test

Little Man: Single-Plane vs. Dual-Plane Intake Manifold Test on a Carbureted 4.8L LS

The great thing about being an LS enthusiast is you don’t have to worry yourself with the petty problems that plagued the lesser Gen. I small blocks, right? Case in […]
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man adjusting rocker arm valve lash on a ford 5.0 liter v8 engine

Testing a Junkyard Ford 5.0L Engine with New Top End Kit

It has always been my contention that the 5.0L Mustang saved Ford, or at the very least, Ford Performance. Prior to the introduction of the 5.0L, Ford was serving up […]
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5.3 LS with MSD Atomic intake manifold

Testing HP Increase from ProCharger on 5.3L Iron Block LS Engine

What does every enthusiast have in common? No matter what car you drive, what motor you like, or how old you are, we all share the same desire to make […]
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