FAST

Speed Secrets: 408 Fast Intake Test

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Single plane carbureted intakes are notorious for making big peak power, and the Fast LSXR intake is the best of the best when it comes to LS EFI applications, but how do the two compare? To find out, on an episode of Speed Secrets Richard Holdener and the guys from Fast stage an intake shoot out. For a test engine, ... Read More »

Speed Secrets: It’s Time to Juice the LS

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Typically, nitrous comes in two different configurations. For EFI applications there is the wet fogger system, where you combine nitrous and fuel in a single fogger nozzle and install it somewhere in the air intake system. Although, if you were looking for nitrous for a carbureted application, a perimeter plate type system would be the way to go. While both ... Read More »

The 1,000-HP Cam: Turbo LS Power

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By Richard Holdener/Photos by Author We will skip right past the notion of whether you really need 1,000 hp, and jump right into how to get 1,000 hp. The reality is that most race cars have trouble putting four-digit power levels to the ground, let alone street cars, but since 1,000 hp seems to be the new 500 hp, let’s ... Read More »

Speed Secrets: It’s All About E85

It’s All About E85

In this episode of Speed Secrets, Richard Holdener explains everything you need to know about E85, and puts the ethanol fuel blend to the test. There are many benefits to running E85 fuel, which is a blend of 85% ethanol and 15% gas. It is a much higher octane fuel (112 vs 91) than what is available at most pumps, ... 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 »

The A Team: Cam, Chemicals and Boost

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The first step on the road to success with any LS, even a boosted one, is always a cam swap!    When it comes right down to it, all dyno testing is fun, some tests are just more fun than others. Case in point, any test that involves what we call the A-Team, meaning a motor from the wrecking yard, ... 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 »

Think FAST: XFI Sportsman Test

What was the key to successfully boosting our small block? This XFI Sportsman ECU and throttle body from FAST.

Words and Photos: Richard Holdener Not to knock the venerable carburetor, but we all know that fuel injection is the name of the game. Sure, carburetors have been used to provide air and fuel for millions of automobiles for decades, but there is a reason that all the OEMs have made the switch to modern fuel injection. While carburetors perform ... Read More »

Fuel Fight: Injectors vs Pump

Increasing the power output of just about any motor is a simple matter of adding boost. A supercharged late-model Hemi is a serious performer, but not without enough fuel.

Words and Photos: Richard Holdener When it comes to maximizing performance, there is no better time to be an automotive enthusiast than right now. Not long ago, if you were rolling with 500 hp, you had little to fear out on the mean streets. Time and technology have marched on at such an accelerated rate that 1,000 hp has quickly ... Read More »

Battle of the Sixes: LQ4 vs LY6

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Words and Photos: Richard Holdener  Time, they say, marches on and that is good news for LS enthusiasts. The reason time is important for LS enthusiasts is that as each year goes by we get more and more engines in the wrecking yard to choose from. Not only do we get a fresh supply of motors for the wrecked vehicles, ... Read More »