FAST

Speed Secrets: How Much Power Do You Get From Heads/Cam/Intake on an LS1?

Screen Shot 2019-10-28 at 2.32.33 PM

Speed Secrets, COMP Cams, FAST, and RHS team up on this test to see how much horsepower you can get out of 5.7-liter LS1 when you upgrade the heads, camshaft, and intake manifold. Truth be told, this combination of upgrades can be applied to an LS engine to get similar results you will soon see from the test. From the ... Read More »

Speed Secrets: LSXR vs. Stock Truck Intake Dyno Test! Which Makes More Power?

Screen Shot 2019-07-30 at 1.28.05 PM

Working with the experts at FAST, it’s time to test the factory 5.3-liter intake manifold against the LSXR intake manifold. If this goes like any of the prior testing, the FAST manifold is going to be a tough one to beat. This is even truer with heavily modified engines, but how well will it work on a milder 5.3-liter engine? ... Read More »

Speed Secrets: Does a Larger Throttle Body REALLY Gain Horsepower?

Screen Shot 2019-07-23 at 11.27.17 AM

Working with the experts at FAST, it’s time to talk about airflow – not just any airflow, but throttle body airflow. There’s a lot of misunderstanding around the engine building community about intake manifolds and throttle bodies. When a FAST intake manifold was tested against a stock manifold, you’ll see big gains – the misconception is that those gains are ... Read More »

Speed Secrets: Why Air-Fuel Ratio Matters When Tuning

Screen Shot 2019-06-20 at 2.00.10 PM

Working with the experts at FAST, the Speed Secrets crew sets out to get the down and dirty when it comes to tuning, specifically, the air/fuel ratio aspect of it as timing be covered later on.  When expert tuners and engine builders put a car or engine on a dyno to do tuning, they are constantly monitoring air/fuel ratio, but ... Read More »

Speed Secrets: 5.3 LM7 Cam and Intake Test! How good is the TBSS manifold

Screen Shot 2019-06-18 at 11.06.21 AM

What kind of power gains can you get when you upgrade both the camshaft and intake manifold on a 5.3-liter engine? That’s what the team at Speed Secrets set out to find out, working with the experts at COMP Cams. What’s really cool about the experiment on this is, we get to look at the power gains from the combo, ... Read More »

Speed Secrets: Boosted 5.3 Upgrades = BIG POWER!

Screen Shot 2019-05-31 at 2.08.26 PM

The 5.3-liter GM Gen III engine came from humble beginnings as an easy to find engine at any given junkyard (due to its widespread use in GM trucks) as an alternative to an LS1, and now it’s becoming an engine prefer instead of the LSs, especially when it comes to boost. These engines seem to love to be force fed! ... Read More »

Speed Secrets: Everything You Need To Know About Fuel Injectors

Screen Shot 2019-04-17 at 2.34.58 PM

When building an engine, everyone knows that the right head and cam combinations and/or boost can equal big power. With so much focus on the big things, it is easy to over look the basics. The root concepts that make up an internal combustion engine, like air, spark, and fuel. Although, everyone wants to make big power, no-one wants an ... Read More »

Speed Secrets: Understanding Timing For Your Best Tune

Screen Shot 2019-04-17 at 2.20.41 PM

So you’ve done your research and picked out the perfect parts for your application, put it all together, and now all you’ve gotta do is find a way to control the beast. That’s where FAST comes in with their impressive XFI management system. No matter the engine or combination, when it comes to tuning there are really two major elements ... Read More »

Speed Secrets: FAST Intake Manifolds Short Intake Runner Test

Screen Shot 2019-04-16 at 1.27.42 PM

The LSXR LS3 intake manifold is the result of extensive EFI research and development by Fast, the industry leader in fuel injection aftermarket performance parts. More flow and more power are among the many benefits this incredible intake manifold has to offer, but it doesn’t end there. The really great part about the FAST LSXR LS3 intake is its adjustability ... Read More »

Speed Secrets: FAST LSXR 102mm Intake Test!

Screen Shot 2019-04-08 at 12.56.25 PM

How much power are intake manifolds really worth is a commonly asked question. To try his hand at answering this question, Richard Holdener with Speed Secrets teams up with Comp Cams and Fast. The problem with this question is that even though it seems pretty straight forward, it’s really not. The reality is that the power gains from an intake ... Read More »