The upgrades included a 58x crank trigger wheel with the cam sensor moved to the timing chain cover. I forgot to add I will not be using boost and what would be the best fuel rails and injectors? Any other recommendations or required mods are welcome. Crafted from aluminum with a 61cc combustion chamber volume, these cylinder heads feature a cathedral-shaped intake port and an oval exhaust port. These cylinder heads were originally designed for various models of Chevy vehicles and are compatible with LM7, LR4, and LM4 5.3 engines. The material of the cylinder heads is another essential feature. 9 Minutes Read / 799 heads came on trucks manufactured around 2005 and above, as well as newer models of 5.3 and 4.8-liter trucks, come with 799 heads. ICT billet offers an idler location kit (part number ICB-551353 https://www.summitracing.com/parts/icb-551353) which allows a car intake to be used with the truck accessory drive. This helps to reduce the compression ratio, resulting in improved combustion efficiency and increased power output. Converter recommended. of seat pressure and 450 lbs. Turbo cams reduce overlap with less exhaust duration split in relation to the intake. Is It a 4.8L or a 5.3L Engine?Spotters Guide. [] LC9 5.3L Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More []. You need the main info about your engine components to get the right numbers. Batten, followed by several years developing performance pistons at Wiseco Piston Co. Today, Brian develops performance parts for Summit Racing Equipment and is a regular OnAllCylinders contributor. This specific guide is for the GM LC9 5.3L engine. Go there and search LS engines for a comprehensive collection of LS engine tech information.). Pulling 799 Heads off a RARE LS Powered Junkyard Vehicle for CHEAP + Turbo LS Nova Streetcaring SPPTV 40.3K subscribers Subscribe 140K views 3 years ago This time on SPPTV we head to our. link to Alternator Overcharging - Causes and Fixes, link to LS Head Bolt Torque Specs and Sequence. I plan on having the mill the block and heads, but would like to do the rest of the build myself. The 799 LS heads have 2.00-inch intake valve. We loooove V8 Sky/Solstice swaps. The flat-top L33 pistons added some much needed compression. 280k miles. At Allied Motor Parts, we provide 799 LS heads for sale to customers who only want the best for their engines and do not compromise on quality or performance. 243 came with sodiom filled stem 1.55 exhaust valves (lighter and more heat dissepation) and 799 came with regular solid stem 1.55. You'll want to consider it if you're looking for increased performance. Additionally, this OEM part features hardened valve seats for extended life as well as precision machining that ensures precise fitment to your existing motor and components. The additional horsepower provided will allow drivers to experience an improvement in acceleration and top speeds while also having more confidence when tackling tough terrain or hauling heavy loads. ALSO make sure to hit the bell to get notified when we go live.THANKS for watching! As such, they offer an impressive increase in power output of up to 25 horsepower when compared to other similar truck engines on the market today. What made the 317 heads both kissed and cursed was the combustion chamber size. The quick way to spot a Gen III block is by looking for the knock sensors and lack of displacement on demand (DOD) bungs in the lifter valley. All 5.3L NNBS motors either came with the 799 or 243 heads and flat top pistons. Many ported 799 heads are made from aluminum, which is a good choice because it's both solid and lightweight. This is Nate Bush's 5.3L long-block build from Custom Performance Racing (CPR) that can handle more than 1,000 RWHP on boost. Hunter, the BTR Stage 3 truck cam is nice. isnt a problem with dual valve springs. Starting with an aluminum Gen IV block, Bush added CNC 243 heads, a stock GM LSA forged crankshaft, and some Wiseco flattops with 9.5:1 compression and Scat H-beam 6.125-inch rods. Sometimes referred to as the LS6 , the LQ4 is a 6.0 litre member of General Motors' Vortec engine family.It was first introduced in 1999 and was used for both light and commercial duty applications until it was discontinued in 2006, making way for the new generation of engines from GM's LS range. Both the 4.8L and 5.3L have the same bore yet different strokes. There is a .550 lift version of the SUM-8712 coming soon called the SUM-8719. The 799 LS heads boost horsepower up to 25 hp. Note that the Vortec Gen III and Gen IV overlap in some circumstances as the higher-trim-level trucks received the newer copy of the engine first. With machining improvements such as raised exhaust ports, increased valve size from 1.89 inch intake valves up to 2 inches, and improved combustion chamber shape for superior flame travel through the cylinder; these heads offer great performance potential at a fraction of the price compared to other aftermarket options on the market today. It is no wonder that the 862 heads are so popular among General Motors' LM7 engine owners, for these cylinder heads pack plenty of power and a great design. Im building for factory reliability but adding a little boost for some extra power. The 799 cylinder heads are in the similitude of the 2004 LS2 cylinder heads due to the triangle casting marks similarity. The extra cubes bring boost on quicker which means you can use bigger and more-efficient turbos. Given the minimal difference in flow and lack of power production, the 241s don't seem like much of an upgrade over the 706 heads. It is vital to note that combustion chamber size plays a significant role in either increasing or reducing the compression ratio. That, my friends, is another test for another day! With a bigger cam you can mill the heads for up to 10.8 compression which runs on pump gas. In terms of peak flow, the 241 heads offered 242 cfm at 0.700-inch lift from the 199cc intake ports, and 204 cfm from the 71cc exhaust ports. The exhaust valve is responsible for expelling the burnt gases off the combustion chamber of an engine after the power stroke. The factory cam is tiny and really holds the engine back. I have 2007 5.3 Tahoe, oil leaks is happening and I feel like all gaskets are burnt up. The LS engines designed with 799 heads were 5.3L and 4.8L truck engines. Why Chevy 706 Heads LS Make a Great Choice? Simply put, the Gen III is easy to swap and cheap, and the Gen IV has better heads and more complexity. someone to get original picture of motor and transmission with this trim and year of truck its much appreciated. The Gen IV came from the factory with drive-by-wire on the throttle body, a 58x reluctor wheel, and in some cases, variable valve timing (VVT), AFM, or both. The valve stem of the 799 cylinder heads can be replaced with new ones in order to ensure high-quality performance and efficiency. oversize forged pistons. REMEMBER--just because the heads say '243' doesn't mean it has the lighter weight valves and upgraded valvetrain like the 243 heads that were on the Z06 Corvette. im looking into getting 600whp will the stock heads get me this with a 80mm turbo? The 243 and 799 numbers reveal the original molds out of which these castings were constructed. When it comes to modifying the L33, its easiest to think of it as a small bore LS6. Additionally, these heads were used in some Camaros and Pontiac GTOs as well. Aluminum is a good material of choice because it is lightweight yet durable. By Albert, What Does It Mean When It Says Check Awd System. The 243-cylinder head is compatible with OHV (overhead valve) engines as well as 16-valve engines (2 per valve). What did LS 862 heads come on? The factory 5.3L designations are LH, LY, LM, LC, or L8 instead of LS (the exception is the FWD LS4). [Editors Note:This L33 engine upgrade guide is part of a series ofLS engine upgrade guidesassembled by a team of LS experts at Summit Racing that we are sharing at OnAllCylinders. The Vortec 5300 engine had several variants over its life, being known as the LM4, LM7, L33 and L59. Evidence will be water in the oil and sludge buildup under the valve cover. Hi, Im looking at putting an L33 into a Barbarian V8 motorcycle custom built to take an LS engine, it will be married up to a single speed direct drive gearbox, will not be able to use its usual intake due to space under the fuel tank so what would be the best lowest profile intake/throttle body unit I could use without sacrificing performance, what would the best cam to use given the direct single drive, like the lumpy sound yet be a daily driver, Frame in transit at the moment so just looking at a direction to go with its powertrain. If you are looking for a daily driver cam, the Summit Racing Pro LS SUM-8712 stage 1 is a great onelots of power and a slightly noticeable lope and uses stock springs. Still looking for more? Since these cylinder heads come with a smaller combustion chamber size than other options, you will need to mill them down a minimum of 0.025 inches in order for them to fit properly in your engine block. The 243/799 heads have cathedral ports with improvements destined for the LS6 Corvette and later the LS2. The shape is designed to increase airflow and power. The 799 and 243 casting Cathedral-port cylinder heads can be CNC ported to flow close to the aftermarket heads. I am also looking fo a tbss or 07 NNSB intake. Aluminum is a good material of choice because it is lightweight yet durable. (Blurring Pictures Online), How to Gap Spark Plugs With and Without a Tool, Why Engine Is Hot and AC Turned Off (Causes and Fixes). The Coefficient of Discharge is a calculation of the airflow versus valve sizing, and gives a much more accurate picture of the power potential of these heads. Both the 243 and the 799 cylinder heads are General Motors 3rd generation cylinder heads designed for V8 trucks, performance engines, and SUVs. Trans computers were external early on and switched internal later. The exhaust valve should ideally be 85 percent of the size of the intake valve. Im doing a l33 swap in to a old s10 with manual. 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. Or replace old parts? When ChatGPT was released to the world in November, most of us marveled at its ability to write rap lyrics and cover letters and high-school English essays. The 4.8L has a 3.27-inch stroke, and the 5.3L has a 3.62-inch stroke. The power output of these compact racers was increased to 430 horsepower and beyond, making them more than capable of competing against rival vehicles on tracks around the world. and wont support more than about 380 whp, but thats an easy fix. Of course, the 799 heads are good. Bore 1/5 = 2.346 in. It was found that the 799 heads were superior, offering as much as 20 cfm more than the 706 head at some lift points. Anyway I can get it to be solid strong. The aftermarket is strong,crate enginesare available, and used motors are often cheaply sourced through junkyards. Ever reference I have come across thus far designates that engine as being the LC9. Hello, Im wanting to delete the DOD in my 2011 Sierra 44 with a .525 or so cam, I am wanting to know the best parts I should use for lifters, push rods, maybe 1.8 rockers, springs, bushings, locks & or injectors. Youll be knocking on 400 whp which is where the stock injectors max out anywayso its a fairly inexpensive proposition for the power youll be making! The 5.3L uses a Roll Master billet timing set with a Torrington bearing, and an LS2-style chain damper. The sophisticated architecture, cathedral-shaped port, and smaller combustion chamber work amazingly on these truck engines. Next to the 706 heads, the 799s featured the smallest combustion chamber at 64 cc. in this thread in this sub-forum in the entire site. This helps to guarantee whether the channel of the cylinder head is reliable. This combination allows for ample airflow and optimal burning of fuel, resulting in an increase in performance output compared to many other stock cylinder head designs available on the market today. We also took the liberty of measuring the combustion chamber diameter (distance across) to illustrate how the factory sized them for their particular target bore size. So check out our selection of 799 heads today and get the power and performance you need. The 799 LS heads have a D-shaped port. Like the 317s, the 241 heads out-flowed the 706 heads, but once again, that airflow did not translate into power production. However you seem to state that it was available until the 2011 model. However, Chevy unveiled the L20 4.8-liter engine, which had the 799 cylinder head in 2010. The sheer force provided by this motor makes it an ideal choice for anyone looking to take their car or truck to the next level in terms of performance. any recommendations would be appreciated. making 310hp (235kW). So lets look at the 799 heads and what makes them a nice choice for a porting job. These powerful engines could be found not only in Corvettes but also trucks and SUVs such as the truck-spec LQ9 and LQ4 that had 6 cubic centimeters larger combustion chambers. The port shape is identical to the 243-cylinder head. Dont mind a little downtime? Your email address will not be published. , or are the LS 243 cylinder heads better? Funny, I have a 2013 Silverado LT 1500 Z71 and the 8th character of my VIN is 7 also. A 205cc runner head is a good match with the TBSS intake. Check out the dyno graphs to see how much the 317s lost on this 5.3L test and you might think twice about what you choose for your next turbo LS. The engine specs and information listed here is for a stock LC9 engine. This also helps reduce emissions by allowing more complete fuel combustion in each cylinder. The L33 is a returnless system. The alternator, sometimes called a generator, generates electricity to charge the battery and power all the electric auxiliaries while driving. I have a 2006 L33 and a 6 speed manual trans going into a 63 impala. The exhaust port in an engine is just as important as the intake. Have a 2000 Z28 intake on it. Lets talk about bottom-end upgrades. The exhaust port features a D-port shape that reduces back pressure while still providing plenty of exhaust flow for increased horsepower and torque output. 5.3L and 4.8L truck engines are LS engines designed with 799 heads. Apparently the LC9 was manufactured until at least 2013. The 209cc intake ports flowed as expected, but the 74cc exhaust ports were not quite up to snuff. These heads are for a new project that will be beginning soon on the channel, more on that soon! The L33 was built later, but was still a Gen. 3 engine. The 243-cylinder head was mostly used on the LS6 and the LS2 engines. Big 7/16-inch rod bolts will go a long way to keep things together over 7,000 rpm. They can handle about 750+ hp and 7,000 rpm in boosted applications (at least for a while). The real advantage to the Gen IV engines are the cylinder heads. The 799/243 head is great for flow, but given that your engine originally came with 706 heads, it likely has dished pistons. It is an aluminum block. The cylinder heads come with a sophisticated architecture that delivers high-quality performance and efficiency. Both heads had 2691 Show more Show more It's. The block is 80 pounds lighter than the iron version. 13 Step Process for Remanufacturing Cylinder Heads, Cylinder Heads for the Chevrolet 350 - What You Need to Know. Even though the aluminum L33 weighs basically the same as the iron 4.3, except it makes 315 N/A HP instead of 190hp. If youre going over 800 hp, a set of .200 in. These mods can be done in your garage, but the tune wont be optimized. 799 heads users can verify the valve seating of the cylinder heads by engaging vacuum and pressure testing. Truck engine bays make fitting turbos easy. As a result, they have become some of the best performing cathedral port factory heads available on the market today. They will have better cylinder heads and floating piston pins, so they are reusable for a good low-budget build where you throw a cam, studs, and boost at the engine. A better option is the Chevy Trailblazer SS or the 2007.5+ NNBS truck intake. i have a 3 which is a alum block lc9 with 799 heads, You think it is possible you could send a picture of motor and transmission my vin number 8th character is a number 3 as well, I have a Chevy Silverado 2011 z71 44 1500 extended cab Lt vin 8th character number 3 its supposed to be a Lc9 with the 799 heads for motor and the 6 speed transmission I believe someone has swapped out my motor and transmission with something else on the front of the motor its got vo4 right behind the water pump what does this mean if could get Which one do you think would be better and what unexpected changes are needed for both. Remember, a 4-corner steam kit reduces hot spots that cause the rings to butt and snap the pistons ring lands. I like the sum-8712 cam idea, but my issue might be keeping it under the hood. I am swinging back and forth with LQ9, L33 or L92. You will sometimes hear the Vortec engine referred to as LS because the basic engine design is the same. Inasmuch as porting to 799 heads comes with an advantage of increased horsepower due to increased compression, you must ensure to consider both the pros and cons before swapping the cylinder heads. Heres a table with common performancerotating assembly combinations. Main studs should be added any time youre this deep in the engine. Year Range: 97-04. But, it also means more heat inside the engine. ARPChevrolet PerformanceCustom Performance Racing (CPR), Gardena, CAWiseco Pistons, Custom Performance Racing (CPR), Gardena, CA. The Definitive Guide to LS Engine Specs and LS Engine Upgrades, LC9 5.3L Engine Upgrade Guide: Expert Advice for LC9 Mods to Maximize Performance - OnAllCylinders. At the very least, the 317s would need more boost to reach any given power level than the 706 heads, and besides, a compression ratio of 9.5:1 works well on a turbo application. I just bought a low mileage L33 with only 53k on the clock. This top-of-the-line cylinder head assembly offers increased performance without sacrificing reliability or durability, making it an ideal choice for any hot rodder or drag racer looking to up their game. You also need to consider the type of vehicle you have. This is due to the larger exhaust port volume, which allows more fuel and air to enter the combustion chamber than necessary. This new engine featured head castings that were basically a reduced-size version of the LS7, which had been fitted on an Australian Escalade model back in 2007. The intake is the factory Gen IV truck manifold and will be run using a stock computer and HP Tuner software. Before beginning the tuning process, we recommend installing a colder thermostat to open up the tuning window. Will the stock ECU be able to be programmed for the manual? Whether youre towing on low-octane or springing for good fuel, a tuner can dial-in the ECM and take it to the next level. The aftermarket is strong, crate engines are available, and used motors are often cheaply sourced through junkyards. ull have to use the ecm from the 2012 and u may have to change ur fuel pump but not sure on the fp but poss about the ecm.u may call the dealer or summit and ask to b sure. My son and I are looking for the L33 now for a swap into his 1992 F150 extra cab short bed. There are a few other parts needed for a L33 cam swap such as an LS2 timing chain, LS7 spec lifters, LS2 timing chain damper and thick-wall chromoly pushrods. In addition to these applications, this port design can be found on Cadillac CTS-V models and the LS9 in the Corvette ZR1, giving further evidence of its exceptional quality and power output potential. I PUT A STAGE 1 TSP TRUCK CAM WITH AIR RAID INTAKE AND DYNOED 283WHP AND 302WTQ. The head is designed for use with four cylinders but can be adapted for use with up to 6 cylinders if necessary. They offer excellent performance with increased horsepower making it a preferred choice for a porting job. This is because the cylinder heads come with 64cc combustion chambers. These 799 heads are the latest model and are made using the semi-permanent mold method. The 799-cylinder head also weighs 26 lbs, the same as the 243 one. Bore 3 = 2.307 in. The chamber volume on the 799 heads was within 2.5 cc's of the 706 heads, but the dyno indicated this did not translate into power on our test engine. Looking at the BTR Stage 3 truck cam. Easy Guide, Symptoms of a Dead Cylinder (Causes and Repair Cost), 2023 Car, Truck and Vehicle How To Guides - Vehicle Freak, Do Motorcycle Exhaust Need Baffles? It is no surprise that the 317 heads made the least power. The 243 was created in a GM research laboratory, while the 799 was later adopted by other manufacturers later on. The main difference between the two is from which mold casting the two cylinder heads originally came. A higher compression ratio means more power with less fuel in the cylinder and fewer exhaust gases. The 243 and the 799 cylinder heads are practically the same. The Dorman 615-901 has proven itself to be very close in power to the TBSS intake manifold. This process can be time-consuming and costly if not done correctly, so its important that you understand all of the potential pitfalls before attempting this swap. Meanwhile, a reduced compression ratio results in a cooler burning temperature. I'd probably be incline to limit the chamber size to 61cc or 62cc. This gave it greater durability, allowing it to withstand higher levels of torque and providing improved cooling efficiency when compared with its successors. As you have most likely caught on by now, these two cylinder heads are practically the same. The power output can swing up to around 3 4 percent, delivering about 25 horsepower (hp). My rear is set with 3.42 gears and a locker. There is a medium sized stage 2 cam called the SUM-8701 that has a nice lope. I am looking at 5.3 with 862 heads to put in a 1950 fleetline. 2007 Chevy trailblazer SS. Bought a perfect running truck for 2800$. These are usually reserved for larger engines because they can handle the increased displacement and power. The injectors are only 25 lbs. Condition: Remanufactured - Exceeds OEM Specifications. The 243 and 799 cylinder heads are practically the same, with only minor differences in port and valve sizes. Required fields are marked *. You may need a bit longer of a pushrod as well. 243 Heads: All About 243 LS Heads & Their Application, Unleashing the Power of LS2 Heads: Everything You Need to Know, HIGH-PERFORMANCE GM LS-SERIES CYLINDER HEAD GUIDE, Over 2,000 Available, all Makes and Models, Highest Quality with Triple Angle Valve Work. This makes it ideal for those who want to reduce the weight of their vehicles without having to compromise on power or performance. The LM7 cam is still a great choice for those who are looking to extract maximum low-speed grunt from their 5.3L engine as it will provide smoother throttle response and more usable power across its entire operating range than many other designs on the market today. CHP. The 243-cylinder head weighs just 26 lbs, which is significantly lighter than most other aluminum heads on the market. 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. With some modification, I am mating it up with a 4l60e. You can make 700+ hp with a couple of simple upgrades like head studs and LS9 head gaskets. The chamber volume on the 799 heads was within 2.5 cc's of the 706 heads, but the. Its been known to handle over 1,000 whp. Here are the differences: 243 heads came with 2.00 hollow stem intake valves (lighter) and 799 heads came with regular solid 2.00 intake valves. Engine specialists have taken these powerful components and remanufactured them at more budget-friendly prices. Brian I have a 06 L33 4wd Silverado I am wanting to build it up a bit. What heads came on LQ4? A set offorged pistonsshould be high on your priority list. This automatically leads to inefficient combustion with reduced power output. The amazing success of this design is evident in the fact that its casting number, 243, was recycled for use on the LS2. if u wanting to save money i know u can upgrade the stock rocker fulcrums sum sells a kit.otherwise i would just contact a rep from sum to help you find the best part for you. Still can drive daily. If you are contemplating a porting job, choosing the 799 cylinder heads will be wise. I want to switch my 04 ls1 long block out for a l33 because I want to boost over 7psi. here are some fuel rail covers for the LS engine, but we couldnt find ones that specd the 5.3L precisely. The distinguishing feature of this particular engine is its cast iron cylinder heads; while all other versions have aluminum heads, the version released in 1999-2000 had cast iron ones instead. Therefore, regardless of which head you choose, you will still receive maximum power from your engine. Dyno testing revealed that at certain lift points, the 799 heads were able to outflow their predecessors by as much as 20 cfm. Both the 243 and the 799 cylinder heads are General Motors' 3rd generation cylinder heads designed for V8 trucks, performance engines, and SUVs. S. In 1999-2000, LQ4s came with #373 or #873 heads that had 71cc . For example, Corvette Z06 models feature 243 heads with sodium exhaust valves, which is typical for an L6 engine. CNC Ported LS1/LS6 243/799 Cylinder Heads .650 Springs 2.02/1.59 Valves PAIR, Chevy Cylinder Head LS1/LS6 243/799, Year:97-04, Chevy Cylinder Head LS1/LS6 243/799 - PAIR, Year:97-04, NEW CNC Ported LS1/LS6 Cylinder Heads .650 Springs 2.02/1.59 Valves PAIR. For many people, selecting suitable cylinder heads can be pretty tricky. How Much Does It Cost to Install Led Lights Inside Your Car? This was an engine specifically designed to surpass the power and performance of the LS1, and it certainly achieved this goal with flying colors. This reduces expense when you build it up. The exhaust port volume specifies the total amount of exhaust gas that can flow out of the cylinders during the exhaust stroke. We are talking about the 5.3L here, so let's look at the heads they came with. Where Are Head Gaskets Located on an Engine? The 862/706 heads have smaller combustion chambers than the Gen IV, raising the compression ratio when swapped directly. The massive chamber volume of 71.5 cc's put them a full 10 cc's over the 706 heads. Description: CNC Ported LS1/LS6 243/799 Cyl Heads .650 Springs 2.02/1.59 Valves PAIR. While large combustion chamber reduces the compression ratio, smaller combustion chamber produces more power due to increased compression ratio. Hi, im going to put a L33 in my 1973 C10 shortbed. The cylinder head gasket is one of the most over-engineered and stressed components in an internal combustion engine. These motors are capable of making a lot of horsepower, and respond well to upgrades like turbos, superchargers, high-flow cylinder heads, intake systems, cams, and nitrous oxide. We recently created this blog site to enable us to share our knowledge with other automotive mechanics and car owners. The combination of the two will pull strongly up to 7,000 rpm. Its a fairly straight forward swap and Summit has the cam swap kits that include the gaskets, LS2 timing chain, and damper bolt. They have far outflowing capabilities compared to their cathedral-style counterparts, making them one of the top LS cylinder head options available today. If youre contemplating 799 heads vs. 706, they offer more advantages compared to 706 heads, irrespective of the common challenge with 799 heads. And given your intake setup, you may need to trim or modify these too fit. The intake port volume for 799 LS heads is 209 cc. Putting a truck cam in puts you in the zone by itself. With these results it's clear that if you're after maximum performance then investing in some 799 head will give you more bang for your buck! It plays a significant role in selecting suitable heads because it will ultimately determine the compression ratio. The best way to identify a 5.3L is the dish in the piston; the 4.8 has a flattop. It connects the intake manifold with the cylinder heads. Despite having been out of production since 2006, this engine remains popular amongst performance enthusiasts due to its strong performance capabilities even without modifications. When running boost, you can use a water-methanol system to supply extra fuel and lower charge air temps. The799 LS headsare some of the most popular heads used in LS engines. We recommend a dedicated truck cam. SMASH THAT SUBSCRIBE BUTTON! Its V8 configuration also provides an efficient combination of power and fuel economy, so you wont have to worry about breaking the bank when refueling after a long day out with friends or family. Manufacturer: Chevrolet. It was actually the 8th digit of the vehicle identification number. I would imagine the 799's are the same, if not they should be close to that. Some of the most cost-effective and powerful heads available for 5.3L, 4.8L, and even larger 6.0L LS engines are GM's 706 Vortec heads. Its priced at $299.99, making it one of the most affordable high-performance cylinder heads available today. The only difference is that they utilize a heavier solid stem intake valve. Modifications usually start with acold air intake and aftermarket exhaust. So, in the debate of 799 versus 243 heads, it can be determined that they are completely identical and interchangeable with one another. The first order of business was to identify and round up a selection of popular LS factory heads. They come with smaller chambers compared to some of their counterparts with rectangular ports.
Stoneham, Ma Police Scanner, Bill Carroll Obituary, Articles OTHER