The main reason for a stroker crank is added cubic inches. Losses everywhere below 6,000 rpm. To maximize torque in the mid-range in a truck cam, aftermarket manufactures close the intake valve at about 35-40 degrees (@.050 in.) For a primer on the LS engine universe, read LS Engines 101: An Introductory Overview of the Gen III/IV LS Engine Family. If used, it should still have a tracked mileage that will enable you to gauge the wear and tear on the engine. The most common upgrade is the LSA/LS9 injector. 6.0L Vortec engine specs including horsepower, torque, bore, stroke and oil capacity. If you have an L76 and are on the hunt for the best mods, you’re in the right place. If you’re getting forged pistons, upgrade to forged connecting rods at the same time. As we mentioned earlier, the engine came with AFM—which is known to fail. Drop-in .500-in. and go up in smaller increments as needed. Without the VVT system used on the truck engine, it had true flat top pistons which resulted in a higher compression ratio of 10.4:1. Find The LS Series Crate Engines You Need At KarlKustoms.com, One Of The Largest Online Retailers of Chevy Performance Parts In The USA. Ph: 1-864-855-2694 Phone Hours 10AM-5PM EST Fax: 1-864-306-1939 The intake is one of the best available from the factory with its Trailblazer SS based design and 4-bolt 87mm throttle body. Below are some more upgrades you can make to improve the performance of an L76 engine. The Gen III was available in two different RPOs, the LQ4 and the LQ9. ), but a tune will really liven things up. You will want to install a trunnion kit for added reliability. Check to see if the engine is used or refurbished. All our parts are tested in our workshop, on our own cars and at our own motorsports events. bore diameter. The blueprint deck height of the block is 9.240 in., but it’s common to find them in the 9.230-in. injectors that can support roughly 525 whp. Trucks often come with mechanical fans that sap horsepower. These engines feature a cast iron blocks with 9.6 to 1 compression ratios. They are likely to bend before they break when subjected to real track conditions. Engine parts and information for the Chevy 327 V8 such as horsepower and firing order. Not afraid of hood scoops and 7000+ rpm? Piston to valve clearance with a L76 is tight. If your engine is in good running condition now, you can install an AFM disabler. If you don’t have the VIN, you will need to look closer. and go up in smaller increments as needed. The L76 engine had cylinder deactivation technology (GM’s Active Fuel Management’, or AFM), though the AFM system was not enabled when the L76 was first introduced in the Holden VZ and WL model ranges. Big 7/16-inch rod bolts will go a long way to keep things together over 7,000 rpm. It’s better to reduce ignition timing and compensate with added boost to reduce the cylinder pressure spikes that can lift heads and cause the main caps to dance. See why GM truck enthusiasts love the LQ4, LQ9, L76 and LY6 engines. With 350 hp at 5,800 rpm, the L79 was only 15 hp shy of the hottest carbureted 327, the L76 with 365 hp at 6,200 rpm. Fly-cutting the pistons may be required. There were a handful of different 4.8-liter versions and numerous variants of the 5.3-liter engine. Fits L99 L76 L92 LS9 LSA. Tested to withstand vigorous conditions and back by GM warranty. Pace has assembled a complete top end kit for LQ4 carbureted owners, which takes advantage of the L92 cylinder heads and GMPP Hot Cam Kit for more power. A set of headers and an aftermarket exhaust system will make more power, but the drone can become obnoxious. And if you’re in this deep, why not put a cam in it?! When bored and stroked, displacement can be as high as 408 c.i.d. If you have the L76 in a vehicle with deep gears, big converter, cam, and the rev limit bumped, you may want to trade a little of that low-end torque for some top-end horsepower. A standard runner length FAST manifold makes a few more horsepower, but some of that comes from the addition of a larger throttle body. When running boost, you can use a water-methanol system to supply extra fuel and lower charge air temps. ], L76 engine with AFM hardware intact. Raising the factory redline is a big part of this because it allows your vehicle to be in the meat of the powerband longer. There was also a truck version of the L76 introduced in the 2006 Silverado/Sierra that added VVT on top of AFM technology. A lot of this popularity is due to the fact of being able to pick up 4.8 or 5.3-Liter engine from a junkyard for around 600 bucks. Thicker head gaskets or using an aftermarket 6.098-6.100 in. Required fields are marked *. Chevy 6.0 Engine Problems. Call (855) 806-1147 or Order Online! Your email address will not be published. Raising the factory redline will keep your vehicle in the meat of the powerband longer. An electric fan kit will free up that power. GM developed the engine by increasing the bore of the Chevy 265 V8 which was first produced in 1955. When running boost, you can use a water-methanol system to supply extra fuel and lower charge air temps. One is a carb swap, but that would be a rarity with the L76. In most cases a single plane is the wrong way to go, but begins to make sense if you’re running a lot of nitrous. The stock rockers are good up to 175 lbs. This will definitely free up a few horsepower and the V8 burble will make your ride the center of attention at a stop light. The best piston manufacturers have compensated for this by eliminating skirt taper until a point well above where it meets the bottom of the cylinder sleeve at BDC. Truck engine bays make fitting turbos easy. In this trim, it made 361 horsepower and 385 Ft./Lbs. Main studs should be added anytime you’re this deep in the engine. If the engine is going in a lighter car with deep rear-end gears and a high stall converter, you can be more aggressive with duration. The Chevrolet LS-based small-block LS platform is everywhere, and it enjoys quite the DIY following when it comes to creating horsepower and torque with one. Tech Tip: When you’re pulling the cam, switch out the spring-loaded timing chain tensioner for the more reliable wedge-style (early) LS2 damper. We’ve addressed those in the next section on fuel system upgrades. Based on the LS engine, this 6.0 Liter truck engine was designed to bridge the gap between the new LS small blocks and Big Blocks for the truck applications. Big 7/16-inch rod bolts will go a long way to keep things together over 7000 rpm. Slightly lower below 3,000, equal at 4,500, and big gains beyond 5,500. It will make another 20 hp at 7000 rpm, but the crossover doesn’t occur until 6500 rpm and it will consistently be down 30 ft.-lbs. For many people, upgrading an L76 starts with adding a cold air intake and aftermarket exhaust. Information and engine specs on the Chevy 327 V8. The L76 crank was cast but strong. Before beginning the tuning process, we recommend installing a colder thermostat to open up the L76 tuning window. Between the light valves and better springs, the engines will pull cleanly to 7000 rpm. The 6.0 engine had nine variations over its 20 year life span. Requires available 3.6L engine and Trailering Package. Here are some of the benefits: Getting a tune makes it easier to dial in a bigger cam and injectors later. I received Aquaphor almost 15K to get it to 585 horse but that just a little steep right now. No cam phaser fitted (Unlike the L76 Vortec truck engine with VVT) Car L76 does not have this Cam Phaser. Consider this engine in one full piece to avoid compromising on your vehicles horsepower. When running a stroker crank, much of the piston skirt drops out of the bottom of the cylinder at BDC. They are equipped with Active Fuel Management (AFM) which was activated in the U.S. models. Engine Block. There are specific cams in the 230-234 range with intake valve events specially designed to clear the piston without flycutting. Keep in mind, if you’re looking to boost to 800+ hp; a heavy duty aftermarket stainless intake valve is a bit tougher and won’t tulip as quickly from the heat. You could have gotten the 6.2 in your 2010. ], [Every engine spec you’ll need for an L76 project can be found here: L76 Car Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More.]. Whether you have a stock LS motor or a highly modified LS motor, replacing your rockers with a true roller bearing setup is highly recommended. Race gas, E-85, or water-methanol injection is required. Horsepower matches at 6000 rpm and the Tunnel Ram will add another 25 hp by 7000 rpm. The LS2 is designed to be a powerhouse engine that cars can use to improve performance. The 2007-up LY6 6.0L featured the Gen IV upgrades to the block and connecting rods, along with slightly higher compression (9.6:1 vs. 9.4:1). Pingback: Wiring Harness For Hemi Swap - free wiring diagrams, Pingback: L76 6.0L Truck Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More, Your email address will not be published. The L76 engine retains the 6.0-litre capacity and adds displacement on demand (DOD), which is also known as active fuel management (AFM). We’ve addressed those in the next section below on fuel system upgrades. The cylinder heads will have either the 5364 or 823 casting numbers. The LS7 engine is of course very popular in other types of cars, yet this system, and many of our others can be still be used.” “It is a fairly simple upgrade, including an all new tank, and has become the number one engine mod for reliability in these engines. NOTE: You can find engine specs and detailed engine upgrade advice for every LS and LS-based Vortec truck engine in one place: The Definitive Guide to LS Engine Specs and LS Engine Upgrades. On the L76 engine, pistons are the weak link and you probably already know someone who has popped one. range. Performance rotating assemblies are available in many combinations. Torque limiting can be completely shut off, shift points can be raised and it makes it easier to tune for a bigger cam and injectors later on. We recommend a dedicated truck cam. The 6.0L aluminum blocks had slightly longer cylinder sleeves than the iron blocks 5.500 in. torque below 5000 rpm. The L76 cylinder heads are similar to the LS3 heads. Chevy 6.0 Engine Problems. The L76’s Gen. 4 rods are stronger than the Gen. 3 rods and have full floating pins. The low-end torque of the factory and the top-end of the tunnel ram. of intake duration. 6.0L Hop-Up, Part II - Speed Parts Testing New GM L92 Heads And A Crane Cam Raise Our 6.0L Truck Engine's Output To 510 Hp Then We Bolt On A Carb And Gain 15 More. Milling the heads .030 will bump compression to 10.9:1 and will increase power everywhere. It bolts in and flows close to 30 percent more fuel. The Chevy 6.0 is a small-block V8 engine that produces 300hp-345hp and 360tq-380tq, depending on the engine version. [Trying to find an LS engine for a swap or build? Keep in mind, piston to valve clearance will be tight with cams beyond 230 at .050 in. LS3 Rocker Arms - With Roller Trunion Kit Installed. What would be more common is the guy that really loves his nitrous. It … Before you buy a vehicle or use it for trailering, carefully review the Trailering section of the Owner’s Manual. What you need is a cam that delivers a gut-punch right when the converter hits. Product Cataloged Passenger Car & Light Duty Truck (Series 10) 1 Cataloged Medium Duty Truck (Series 40-80) Class A Motor Home, Taxi & Police 1 Non-Cataloged Passenger Car, Light-Duty Truck & Medium-Duty Truck 1,2 Other (Start-up Warranty) 3 Engines, Automatic Transmissions & Transfer Cases 4,5: 36 months or 100,000 miles 2,6 Packaging the 6.0L (L76) V8 under the lower hoodline of the G8 GT passenger car required a lower intake system than is used by the engine in truck applications, and so the thoroughly developed intake from the current LS3 6.2L V8, new in the Corvette for 2008, is used with the 6.0L (L76). They can handle about 800 hp and 7000 rpm in boosted applications (at least for a while). Any power adders will put you well past the limitations of the fuel injectors. Before going to the tuner, we recommend installing a colder thermostat to open up the tuning window. Still can drive daily. Between the light valves and better springs, the engines will pull cleanly to 7,000 rpm. In 2010 the L76 6.0L was replaced with the current 6.2L. This combination was run with the same truck intake and throttle body. This technology allows four cylinders to be shut down by the ECU during cruise situations to improve fuel economy. Below are other upgrades you can make to improve the performance of an L76 engine. The delete kit is more involved and entails pulling the intake manifold, valley cover, and heads to access the lifters and trays, but there are extra dividends you’ll find by reading this: [Read LS Tech: How to Delete or Disable Active Fuel Management (AFM) on GM Engines for more info and part numbers. The LS9 is a sturdier version of the L92/LS3, adding piston oil squirters and forged-steel main caps. I bought it what’s 17000 miles on it it has almost 140 on it now, It runs great oh, I feel like it’s lost some of its juice but it doesn’t smoke still lays a second sometimes third gear scratch, I did the tune on it a long time ago every bolt on possible, but I’m not touch the motor…. There’s a good chance that an L76 will get boost or a nitrous upgrade before seeing any serious cylinder head work. But I was wonder do Subaru’s have throttle body upgrades, found an exhaust and cold air intake but can’t find a throttle body. Go with the Edelbrock cross-ram. Performance rotating assemblies are available in many combinations. If you’re still driving daily, cams in the 215-220 degree intake-duration range can be tuned to idle nearly stock and still provide good mileage. It’s always worth it to invest in a chassis dyno tune to find fuel, spark, and other issues that are harder to spot at the track. Converter recommended. 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