How Much Boost Can a Stock 4.8 Handle

How much boost can a stock 4.8 handle? This is a question that many people ask when they are looking to upgrade their vehicle. The answer depends on a few factors, such as the condition of the engine and the type of turbocharger you are using.

Generally speaking, most stock 4.8 engines can handle up to 18 psi of boost without any major modifications. However, if you are planning on running higher levels of boost, then it is recommended that you upgrade your engine internals to prevent damage.

If you’ve got a stock 4.8 liter engine in your GM car or truck, how much boost can it handle? The answer might surprise you – with the right modifications, that little engine can handle quite a lot of boost. With just a few simple mods like an upgraded intercooler, fuel pump, and injectors, you can start cranking up the boost on your 4.8 liter engine.

Of course, if you’re going to be running high levels of boost, you’ll also need to beef up the rest of your engine to handle the extra power. But if you’re willing to do that, there’s no reason why your 4.8 couldn’t handle upwards of 30 psi of boost pressure. Of course, once you start pushing those kind of numbers, all bets are off as far as reliability goes.

But if you’re prepared to rebuild your engine every few thousand miles or so, there’s no reason why you couldn’t make some serious power with a boosted 4.8 liter engine.

How Much Hp Can a Stock 4.8 Handle

If you have a stock 4.8 liter engine in your vehicle, it can handle up to about 340 horsepower. This number will vary depending on the specific make and model of your car as well as other factors such as weight and aerodynamics. However, in general, a stock 4.8 liter engine can support up to 340 horsepower without any modifications.

If you are looking to increase the power of your 4.8 liter engine, there are a few things you can do such as upgrading the intake and exhaust or adding forced induction. With these modifications, you could see an increase of anywhere from 50 to 100 horsepower.

How Much Power Can a 4.8 Ls Hold?

The LS series of engines is one of the most popular and versatile engine families on the market today. They can be found in everything from performance cars to trucks and SUVs. The 4.8 liter LS engine is no exception, and it can make a lot of power.

How much power an LS engine can make depends on a few different factors. The first is what kind of fuel it’s using. An LS engine running on pump gas will typically make less power than one running on race gas or E85.

The second factor is what kind of forced induction (if any) is being used. A turbocharged or supercharged 4.8 LS will make significantly more power than a naturally aspirated one. So, how much power can a 4.8 LS hold?

It really depends on how you build it, but a well-tuned turbocharged 4.8 LS should be able to make around 700 horsepower with ease – and potentially even more if you’re willing to push the limits.

How Much Hp Does a 4.8 Have?

A 4.8L engine will have roughly double the horsepower of a 2.4L engine. So if a 2.4L engine has 200 hp, then a 4.8L engine will have 400 hp. This is a generalization though and will vary depending on other factors such as torque, compression ratio, etc.

How Much Power Will a S475 Make?

Assuming you are referring to the Garrett GT4788R turbocharger commonly referred to as a S475, on a 6.0L GM Duramax diesel engine, it is capable of supporting 800HP.


This blog post discusses how much boost a stock 4.8 can handle. The author states that the 4.8 can handle up to 12 psi without any modifications. However, the author recommends making some modifications to the engine before increasing the boost beyond 12 psi.

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