Run with a factory LS9 cam, the 5.3L combo produced 428 hp at 6,200 rpm and 400 lb-ft (399.9) at 5,000 rpm. After installation of the Summit Stage 4 cam, the peak power numbers jumped to 475 hp at 6,600 rpm and 418 lb-ft of torque at 5,300 rpm.
Full Answer
What makes a good LS engine for boost?
“Another vital component is the oil pump—billet gears with a high pressure and volume option are a smart move depending on the requirements of the turbo (s),” Stray says of how to equip your LS engine when you’re pushing the limits with boost. “A performance timing set attached to a camshaft with an LSA designed for boost should also be used.
What kind of Cam did you choose for your LS?
We chose a mild, streetable cam from Crane. Designed for mild performance street use, the Crane grind offered .585 lift, a 216/224 duration split and turbo-friendly 114 LSA. Swapping cams in an LS (especially on the engine dyno) is something we look forward to rather than dread.
How can I increase the boost on my camshaft?
“A performance timing set attached to a camshaft with an LSA designed for boost should also be used. Some of the modifications to the top end would be performance roller lifters, rigid pushrods, and rocker arms with springs capable of controlling the valvetrain at higher RPM.
How much HP can a used LS9 Cam make?
Richard Holdener spent $100 on a used GM LS9 cam and valvesprings, then made 402 hp and 379 lb-ft. Note the cam was designed for a Gen IV and requires additional parts to work right in a Gen III.
How much HP can a stock 5.3 LS handle?
If we were to run the 5.3L in stock trim, the resulting power output would be around 360 hp (on this dyno, the way we test). If we apply 14.7 psi from our turbos to the stock 360hp motor, we might get 720 hp.
How much boost can a stock LS take?
on a stock ls1/ls2. These boost numbers can be plenty safe so long as the car has the proper tune. that PSI *can* be safe detonation wise (with a really good tune!)...but common evidence suggests that 500-550rwhp is about the limit of stock internals, mainly the pistons and con rods begin to start dying over 550rwhp.
What LS is best for boost?
If you're planning on boosting your project the 4.8L truck engine will be perfect for you. The 4.8L can take insane amounts of boost completely stock and will really perform well. If you don't want a barebones 5.3L or 4.8L you could always step up to a 6.2L truck block which is based on the LS3 engine.
How much HP does a stock 5.3 have?
around 320 hpThe stock 5.3L is factory rated around 320 hp with 340 lb-ft of torque.
How many pounds of boost can an LS handle?
About 8 or 9 lbs of boost max on a bone stock ls1.
How much HP can a stock LS handle?
about 900 hpThe stock crankshaft can handle about 900 hp and 7,000 rpm (for a limited time). A Forged Crankshaft upgrade will add strength to the bottom end. Stroker cranks will also add extra displacement. If rods and pistons are replaced, it makes sense to upgrade the crank at the same time.
How can I make 1000 hp LS?
2:4815:55how to BUILD a 1000hp LS engine at HOME!!!! - YouTubeYouTubeStart of suggested clipEnd of suggested clipIf you guys are wanting to get into the ls. Stuff you want to make a thousand horsepower. This isMoreIf you guys are wanting to get into the ls. Stuff you want to make a thousand horsepower. This is what you need stock block stock heads. Needs that's it you don't need to go and get aftermarket.
Which LS engine is strongest?
Our fastest crate engine ever As the power behind the 2019 Corvette ZR1, the new supercharged 6.2L LT5 represents the pinnacle of Chevrolet's performance: It's the most powerful engine ever offered in a Chevy production vehicle.
Are 706 heads good for boost?
After running the same setup with the 706 heads, the 5.3L produced 706 hp at 6,500 rpm and 641 lb-ft of torque at 5,000 rpm. The gains offered by the extra compression of the 706 heads remained (and even increased slightly) under boost.
How do you get a 5.3 out of 400 hp?
8:3315:32400 HP POWER RECIPES (HOW TO MAKE 400-HP LS COMBOS)YouTubeStart of suggested clipEnd of suggested clipNow making 400 horsepower from a 5.3. Obviously is a lot easier than making it from a 4.8. And theMoreNow making 400 horsepower from a 5.3. Obviously is a lot easier than making it from a 4.8. And the reason is because we've already started a lot closer to 400 horsepower with the 5/3 just all stock.
How much hp can a cam add?
Does a camshaft increase horsepower? Yes, a camshaft adds 10 to 20 horsepower depending on the setup. To get the full potential of the high-performance camshaft, you'll have to swap out additional components like the air intake, exhaust manifold, injectors, and valve heads.
What can I do to make my 5.3 faster?
4:238:36Best Performance Mods For 5.3 Chevy Vortec - YouTubeYouTubeStart of suggested clipEnd of suggested clipAnother easy and often overlooked part when it comes to performance is a good set of headers. Now iMoreAnother easy and often overlooked part when it comes to performance is a good set of headers. Now i know we talked about exhaust earlier but many of the exhaust kits available for today.
How much did Richard Holdener spend on a LS9 cam?
Richard Holdener spent $100 on a used GM LS9 cam and valvesprings, then made 402 hp and 379 lb-ft. Note the cam was designed for a Gen IV and requires additional parts to work right in a Gen III.
What is the compression ratio of L33 cam?
Minor pocket-porting really turns them on. Combined with the flat-top pistons, the heads also increase compression-ratio from 9.5:1 to 10:1. The L33 cam is also slightly hotter. In fact, a cam upgrade is the key to awakening even the most mundane LS-based engines.
What engine does the 2005 Silverado 1500 have?
Found only in some 20052007 extended cab, four-wheel-drive, Chevy Silverado 1500 and GMC Sierra 1500 pickups, this engine uses 4.8L flat-top pistons in place of the LM7's dished pistons.
Is a Gen IV a hop up mod?
However, a Gen IV may not be the most cost-effective option; depending on the application, Gen IVs could have come with AFM (active fuel management- selective cylinder deactivation) or VVT (variable valve timing), complicating retrofit and (if you want to go that route) typical hop-up mods.
What is the camshaft on a 5.3 LS?
Given that almost every 5.3 LS was installed under the hood of a truck, it's perhaps no surprise that their factory camshaft (191 degrees at 0.050-inch lift in the LM7) is designed to balance power and fuel economy and favor low-rpm torque. Gen IV engines moved to somewhat more aggressive cam profiles (196 degrees in the LY5, for example), but still oriented towards task-focused towing and daily driving above all else.
What is a 5.3 liter engine?
The 5.3-liter LS engine is perhaps the most commonly swapped member of GM's Gen III and Gen IV family of V8s. Found in millions of pickups, vans, and SUVs, the sheer ubiquity of this LS V8 guarantees its popularity, as it's easy to find donor vehicles and the aftermarket has rushed to support the 5.3 with a huge volume of inexpensive parts.
What engine did the 2004 Volta use?
A Japanese Exotic Ahead of It's Time: The Volta—Toyota's Abandoned 2004 Supercar Concept. A large number of 5.3 swaps make use of the Gen III LM7 engine, which offered between 270 and 295 hp and was sold from 1999 to 2007 across a wide range of Chevrolets and GMCs. Factory torque checked in as high as 335 lb-ft or as low as 315 lb-ft.
How many horses can you put in a Gen IV injector?
Don't worry about the fuel pump on a Gen IV—you're good to nearly 500 horses with the stock unit.
Is 5.3 LS a good truck?
We've established that the stock truck intake on the 5.3 LS is a good one and should do the job until nearly the 500 horsepower mark, but that doesn't mean it's going to fit your project . Taller than what one would find on a passenger car LS setup, you could run into hood clearance issues that will require swapping in something different.
How much horsepower can a 5.3 motor make?
The 5.3 is the cheapest and easiest to find, so you’ll see a lot of people use it. With a 5.3 and 6.0, you can see up to 1,000 horsepower on a stock motor if you push them. There are some who have made more, but the gaskets and internal parts are going to struggle past that level to survive.”.
Why do drag racers like engines?
Drag racers in particular love the engines because of the great horsepower to budget ratio they provide. GM stuffed LS-based engines into virtually every truck, van, and SUV chassis they could, which means there are tons of these engines still available today.
What size turbo is used for a 7675?
For most street applications and engines in the 4.8-6.0-liter size range, the 7675-7875 turbos work very well. Their size creates a package that allows the car or truck to retain as many accessories as possible up to the 750-850 rear wheel horsepower zone,” Ojczyk says.
What should the rotating assembly be rated for?
“The rotating assembly should ideally be rated for higher horsepower and RPM levels than you plan on running. All pressure is a resistance to flow.
Does cylinder head affect compressor?
Cylinder heads affect naturally-aspirated volumetric efficiency, which does affect the pressure ratio, and therefore compressor selection of the turbo,” Smithers says. An engine with the right internal components will handle big boost and horsepower with ease.
Can you boost a stock LS?
Yes, you can make big power by throwing boost at a stock LS engine, however, if you want the horsepower party to last for a long time you’ll need to make some changes to the engine. The stock components just can’t deal with the stress that forced induction can put on them when you really start to crank up the boost.
Is the LS engine boost friendly?
The LS platform is highly touted for being boost-friendly, even in stock form…it’s almost like the GM engineers wanted the engine to be a forced induction powerhouse. This boost-friendly framework and availability of the LS engine has made it one of the most popular engines to use for high-performance applications of all kinds.
