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Search Results for: speed secrets

Speed Secrets: Adding ZEX Nitrous To A Turbo 5.3! HUGE Gains!

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Working with the experts at ZEX, two of the funnest parts of building an engine are tested: boost and nitrous! Nitrous is awesome, boost is awesome, but what happens when you combine the two? Double the fun! When it comes to choosing nitrous or boost, the majority of engine builders will opt for one or the other, but why choose ... Read More »

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

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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?

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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: ZEX 125 Shot Dyno Test On a Small Block Ford

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Can you turn your car into a superhero? Not in a traditional way, but with the use of nitrous, you can give your naturally aspirated engine super powers. In this episode of Speed Secrets, the team shows you exactly what happens when you install nitrous on a 392 cubic inch Ford engine. Before getting to the engine test, it’s important ... Read More »

Speed Secrets: Why Air-Fuel Ratio Matters When Tuning

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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: Nitrous on a 427 Small Block!

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All engines love nitrous, and owners of those engines love it too – because what’s not to like about it? No matter if it’s a Ford, Chevy, Dodge, Big Block, Small Block, LS, LT,  fuel injected, or carbureted engine, they all respond really well to spray. Whether you have a stock engine, or an engine that’s already built, nitrous takes ... Read More »

Speed Secrets: Is A Bigger Cam Always Better?

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Today, we’re going to take a look back at test the team at Speed Secrets did some time ago, but it still applies, and sometimes needs to be revisited. Essentially, the team is setting out to show how using a more and more aggressive cam comes with its trade offs. Specifically, the more and more top end power you gain ... Read More »

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

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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: What Makes Nitrous So Amazing?

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Nitrous has a high level of versatility, and is just generally pretty awesome. In this episode of Speed Secrets, the team works with the guys over at ZEX to demonstrate just why and how this gas is so useful for engine builders and racers.  The first key characteristic about nitrous on the awesome scale is how much bang you get ... Read More »

Speed Secrets: 6.0 Truck Motor: LS3 Cam vs. Comp Cam!

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There’s swapping the cam, then there’s a cam swap – but what’s the difference? In one instance, you are likely talking about swapping from one cam to another, but when you talk about a cam swap, what you’re usually talking about is making a serious upgrade to an aftermarket cam that puts your engine is a better position to make ... Read More »