The LS engines with 799 heads are 5.3L and 4.8L. The sophisticated architecture, cathedral-shaped port, and smaller combustion chamber work amazingly on these truck engines. The smaller combustion chamber with a higher compression ratio offers increased power output. The 799 LS heads boost horsepower up to 25 hp.1.4K. 100K views 4 years ago WESTECH PERFORMANCE GROUP. Previously, we compared the stock 706/862 heads to the 799/243 heads on a cammed 5.3L test …HOW TO BOLT ON 73 HP TO YOUR LS! DO PORTED HEADS ADD POWER? SHOULD I USE PORTED STOCK LS HEADS OR AFTER MARKET LS HEADS? SHOULD I UPGRADE MY LS HEADS? HOW MU...The 799 heads are also great for those looking to increase the total valve lift on their LS engine. 706 heads. The 706 heads are great for optimizing their LS engine for performance. The 706 heads feature high-flowing cathedral intake ports intended for higher-performance applications. They have a larger valve spring package supporting higher ...Precision Race Components Customer-Supplied 4.8L/5.3L/LS1/LS2/LS6 Cylinder Heads Fully CNC Ported & Assembled With Choice of Your Stock or Stainless Steel 2.02" Intake Valves, 1.575" Exhaust Valves, & Optional TSP Dual Valve Spring Kit with PAC Valve Springs & Titanium Retainers. Kit Also Includes TSP Hardened Pushrods & Your Choice Of Camshaft!

The General Motors LS-based small-block engines are a family of V8 and V6 engines designed and ... The stock cam specifications at .050 lift are: 190/191 duration, .466/.457 lift, 114 LSA, 112/116 timing. ... head casting number (which can be viewed from the passenger side of the vehicle just in front of the valve cover) was 706. Some heads ...The Manley Race Flo LS1 (5.3) high quality stainless 2.00" intake and 1.55" exhaust are both available from Manley in sets of 8 each for about $150 set retail. My advise is these valves will do 7500rpms reliably if a nice set of lighter weight conical valve springs and lightweight tool steel retainers are used and they are not overstressed with ...Run on the dyno first with the factory LQ4 cam, the 6.2L L92 produced peak numbers of 445 hp at 5,600 rpm and 459 ft.-lbs. of torque at 4,600 rpm. (Image/Richard Holdener) The Summit Pro LS Stage 4 (SUM-8711) cam offered a .625/.605 lift split, a 234/247-degree duration split and 113+3.5 LSA. (Image/Richard Holdener)

The 243 heads as used on the LS2 motor flow at 260 CFM on the intake. LS6 243s (CNCed) with sodium filled valves flow a little better at 280 on the intake. The stock 241 head flows at 220 on the intake. Either head is a considerable improvement. You can not achieve these numbers by porting 241 heads.The LC9 engine is a 5.3L, Gen. 4, aluminum small block engine used in GM trucks and SUVs between 2007-2011. For marketing purposes, it was also known as the Vortec 5300. The engine specs and information listed here is for a stock LC9 engine. Mechanically similar, General Motors' LS and LS-based Vortec engines wound up on almost every branch ...

The 799 heads are also great for those looking to increase the total valve lift on their LS engine. 706 heads. The 706 heads are great for optimizing their LS engine for performance. The 706 heads feature high-flowing cathedral intake ports intended for higher-performance applications. They have a larger valve spring package supporting higher ...The 6.0 is assembled and already dropped in! Should have that footage ready for you all around the weekend. I had a lot of fun making this video, hope you gu...Great cylinder-head airflow has been a key enabler of the LS-Series’ exceptional performance. Chevrolet Performance delivers those power-building attributes to you with a range of production-style aluminum heads — from the LS6 heads for smaller-displacement engines to LS7 style heads for 427-inch-and-larger combinations, our aluminum heads …243/799 LS CNC Ported Heads. Speed Works has teamed up with Wilkes Performance to bring you the most powerful heads available. We have a few options you can purchase such as a pair of Stage 1, Stage 2, Stage 3, or Stage 4 LS 243/799 Cathedral casting 5 axis CNC Porting with stainless valves and WP .660 dual race springs with WP titanium retainers.These particular heads are 862 castings, replacing my 706 heads on my LM7.

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On the other hand, the 706 heads come with 1.89" intake valves and 1.55" exhaust, respectively. The 243 heads come with 64.5cc chambers, while the 706 heads feature 61.5cc chambers. Although the 243 heads appear to be more excellent than the 706 heads, it may not be a nice combo with a tiny bore engine due to its larger intake valve.

The exhaust port is a unique D-shape that improves flow. LS6 heads are the best choice only when all-out power is needed. Be prepared for a big price tag at the dealer or steep core charge from your head porter. Casting Number 706 and 862. Head: 1999+ 4.8L / 5.3 Liter Truck . Material: Aluminimum . Part Number: 12559862 . 12561706The L33 is a 5.3L, Gen. 3 small block engine used in GM trucks between 2005 and 2007. Although it is a truck engine, it used cylinder heads closely related to the LS2 and LS6. The engine came with flat-top pistons for increased compression, and has a unique camshaft. For marketing purposes, it was known as the Vortec 5300 H.O.Sep 24, 2015 · Don’t be fooled by the price tag, these cylinder heads have excellent capabilities, which have been exploited on many potent head/cam combos. New “862” or “706” casting cores are CNC-ported and machined to specifications dictated by extensive research and testing.The LS1 heads have 67cc chambers with 2.00/1.55-inch valves. Other heads you'll run into are 852 and 706 castings, which have smaller 61cc chambers and 1.89/1.55-inch valves. These are best for ...Upgrade your Chevy 5.3L V8 engine with our Remanufactured 99-06 Chevy 5.3L V8 706/862 Aluminum Cylinder Head (Part#: ALL-20314). To ensure a high level of performance, these Chevrolet heads are built to exceed OEM specifications. These 706 heads for sale are perfect for your 5.3L V8 engine, offering enhanced power and efficiency.Intro to L59 Engines. Meet the hidden gem that helped start the LS-swap craze. The L59 (along with the LM7) is a Gen. III, 5.3L iron block truck engine you can pick up in wrecking yards for about $600. The engine was introduced in 2002 and received a 10 horsepower bump to 295 in 2004 and was made through 2007.Oct 3, 2019 · The Definitive Guide to LS Engine Specs and LS Engine Upgrades. Posted 10/03/19 by OnAllCylinders Staff. Last updated on 05/03/2024. (Image/Summit Racing) This is the ultimate LS engine swap or engine upgrade resource. Scroll through the tables below to find the LS or LS-based Vortec truck engine that you own or are interested in building.

Sep 30, 2019 · Surprising HP Numbers From Our Stock LS Cylinder Head Test I have ported 2 sets of LS heads so far and one was the 706. I did not flow it though but I was impressed at the shapes of the LS runners. I also did some LQ9 heads for a buddy and noticed an area that looked like reversion was happening where the air comes towards the rocker stud boss.The 862 heads are inferior to the 706 heads in terms of compression, and they don’t also flow well like the 243 heads because it doesn’t have other competitive features; however, depending on your car’s needs and budget, the 862 cylinder heads might be a good port for you.batboy. 7477 posts · Joined 2005. #4 · Jul 27, 2010. The LS1 and 5.3 Vortec are both Gen III engines and share a lot of the same parts. Obviously, the 5.3 has a smaller bore. 2004 torrid red with red interior A4 GTO (1 of 499) TR-230/236 cam/TEA ported Trick Flow 215 heads/4" CAI/100mm MAF/ported FAST 90/Kooks/Magnaflow.ProMaxx Performance. HEAD LS 706/862 ASSM. Part Number: 723-LS706N. Product Q&A. View Now. $532.86. Lowest Price Guarantee. See more product details. Free Shipping - Estimated to ship direct from manufacturer on 03/25/24 , pending manufacturer availability.Do not do that. 706's have 61.5 cc chambers and 243's have 64.5 cc chambers so you will lose compression unless you mill down the 243's. 799 and 243 heads are generally accepted as 100% identical. The 243 could come on a truck, or a z06 with lightweight valves, which are also longer than all the other standard LS valves.Sep 1, 2017 · The LS1 heads have 67cc chambers with 2.00/1.55-inch valves. Other heads you'll run into are 852 and 706 castings, which have smaller 61cc chambers and 1.89/1.55-inch valves. These are best for ...The 6.0 is assembled and already dropped in! Should have that footage ready for you all around the weekend. I had a lot of fun making this video, hope you gu...

Expedited Core Exchange - We will ship you a set of CNC ported heads fresh out of the machine and set up to your cam specs once the order is placed. Once your usable cores have made their way to us, LME will refund the cost of the cores. Current GM LS1 243 Cylinder Head core value is $250.00.New “862” or “706” casting cores are CNC-ported and machined to specifications dictated by extensive research and testing. Each set of heads is milled and assembled to the owner’s specifications and utilizes stainless-steel valves.

Swapping over to a set of 862 LS heads unleashes the true potential of built 5.3L engines. They can support up to a 230/238 .600” camshaft, 11:1 compression, and intake/headers for over 450 wheel horsepower. On a paired with a larger cam, the 5.3L engine really wakes up with 862 heads. They enhance the entire powerband, help it rev higher ...Object moved to here.Part Number: DRT-11081050. +2. Images. $5,427.57. Dart Race Series 10-Degree LS Cylinder Heads. Cylinder Heads NMCA Pro Stock Performance Race Series LS 10deg 368cc CNC Bare Head 2.3in x 1.6in valve job. See More Specifications | Check the Fit.Professional porting and machining of combustion chambers required. No seats or guide machining. C5R rectangle-port design – requires aftermarket rectangle-port intake manifolds. Designed for big-bore (4.100" min) …Casting # 706,862. 71cc chamber; .3154 guide ID. Valve head diameter 1.890-1.920 / 1.550-1.580. (Only 1 Remaining) ENGINETECH EHC293. $357.89: $0.00 ... Complete with Valves and Springs Info . Fits Left; Casting # 706, 862 or Right; Casting # 706, 862. CYLINDER HEAD EXPRESS GM5300. Out of Stock: Add to Cart. ENGINETECH CH1059R Remanufactured ...The 243 heads made about 20 RWTQ everywhere compared to the 317 heads, the chamber in the LS6 head is far superior to the 6.0 chamber. Bear in mind ECS had these same Stg 3 make over 600 RWHP on a N/A, hyd roller cam, pump gas engine that same year. Ask me about my LS and Modular spring kits! Always in stock!

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Cylinder Heads & Camshaft Packages. Add 100+ horsepower to your GM LS or Gen 5 LT engine with a Texas Speed & Performance cylinder heads and camshaft package! Our packages will include cathedral port, square port, and rectangular port cylinder heads to accommodate LS1, LS2, LS3, L99, LS6, LS7, LSA, LQ4, LQ9, L83, L86, LT1, and more! …Torque Specs Engine Parts/Bolts Torque: Camshaft Retainer Bolts 18 lb ft Camshaft Sensor Bolt 18 lb ft Camshaft Sprocket Bolts 26 lb ft Connecting Rod Bolts - First Design (First Pass) 15 lb ft Connecting Rod Bolts - First Design (Final Pass) 60 degrThe Stage-4 LS cam offered by Summit Racing featured a sizable .625/.605 lift split, a 234/247-degree duration split and 113+3.5 LSA. Image/Richard Holdener. To test the Summit Racing cam, we first replaced the BTR Stage-2 turbo cam supplied with the 5.3L from Strictly Performance with a factory LS9 cam. Image/Richard Holdener.My friend has a pair of 862 heads in good shape for a good price. Just wanna know if I'll benifit from them at all from stock ls1 heads. I have a mild cam 218/227 long tubes and a lid plan on doing heads and a LS6 intake. I know 243's are good but didn't know if 862's are any good when they're right in front of me. They won't flow as good as ...Description. This program works on the following head casting numbers: 862. 706. Now you can get this porting service on your cylinder heads at an incredibly low cost! Simply follow this procedure: Remove the cylinder heads from your car. Disassemble cylinder heads to completely bare condition. Wash cylinder heads.Feb 13, 2018 · The LQ4 and LQ9 are Gen. III, 6.0L, iron block, truck engines. The LQ4 served in anything from bread-vans and boats to SUV’s between 1999 and ’07. It started off life like any normal truck engine. Iron heads, small cam and the old SBC crank rear flange thickness. That changed in 2001 when GM threw in the bigger cam and aluminum heads ...LSXceleration Stainless Steel 8mm x 1.550 LS Exhaust Valve 15-21550-1 Stainless Steel LS Valves 1.550" Head x 8mm Stem x 4.915" OAL x 0.160" Tip Features: Hardened Stem Tip Chrome Plated Stem Fully Machined Surface Swirl Polished Undercut... 15-21550-1 $12.00 Add to Cart Compare. Add to Cart Compare. LSXceleration ...LSXceleration Stainless Steel 8mm x 2.000 LS Intake Valve Set 15-22000-8 Stainless Steel LS Valves 2.165" Head x 8mm Stem x 4.870" OAL x 0.160" Tip x 45 degree seat angle Features: Hardened Stem Tip Chrome Plated Stem Fully Machined Surface Swirl... 15-22165-8 $96.00 Add to Cart Compare. Add to Cart Compare. Dart Stainless Steel GM LS 2.165 ...Oct 12, 2017 · The 5.7L LS1 is the original Gen. 3 small block engine from General Motors used in cars from 1997-2004. The LS1 engine specs and information here is for the stock 5.7L LS1 engine. Mechanically similar, GM’s LS and LS-based Vortec engines wound up on almost every branch of the GM family tree: Chevy, Pontiac, GMC, Cadillac, Buick—heck, even ...The 5.3L LS Engine Family. The 5.3L LS, or Vortec 5300, is primarily a truck/SUV engine that spanned both the Gen. III and Gen. IV versions of the GM LS lifespan. It’s essentially a longer-stroke version of the 4.8L LS and powered vehicles such as the Silverado, Sierra, Yukon, and Escalade. The engine is made with both cast iron …This is a Rebuilt OE Stock LS 4.8L , 5.3L Cylinder Head Assembly. Part # : 706 , 862 also fits Description : Stock LS Series 4.8L / 5.3L Cylinder Head. Compatible with LR4 / LM7 / LM4 Engines. Specs : Combustion Chamber Volume: 61.15cc Intake Port Volume: 200cc Exhaust Port Volume: 70cc Intake Valve Diameter: 1.89 inches Exhaust …

[Editor's Note: This L96 engine upgrade guide is part of a series of LS engine upgrade guides assembled by a team of LS experts at Summit Racing that we are sharing at OnAllCylinders. For a primer on the entire LS engine universe, read LS Engines 101: An Introductory Overview of the Gen III/IV LS Engine Family.]. Intro to L96 Engines. The L96 engine came in Chevy and GMC 2500 and 3500 HD ...CAN YOU MAKE MORE THAN 500 HP NA WITH STOCK 706 HEADS? DO 799 HEADS MAKE MORE HP THAN 706 HEADS? WHAT MAKES MORE HP, REC PORT OR CATH PORT HEADS? WHAT ARE TH...The 6.0 is assembled and already dropped in! Should have that footage ready for you all around the weekend. I had a lot of fun making this video, hope you gu... dylan riola 247 The 862 head is commonly utilized in high-performance cars, racing, and sports cars. It’s also found in some luxury and sports cars. The 862 is a 12-valve design that utilizes two intake valves per cylinder and one exhaust valve per cylinder. The combustion chamber volume is 84cc for the 862S, 83cc for the 862C, 84cc for the 862F, 82cc for ...243/799 LS CNC Ported Heads. Speed Works has teamed up with Wilkes Performance to bring you the most powerful heads available. We have a few options you can purchase such as a pair of Stage 1, Stage 2, Stage 3, or Stage 4 LS 243/799 Cathedral casting 5 axis CNC Porting with stainless valves and WP .660 dual race springs with WP titanium retainers. elfqrin cc gen All of the block, head, intake, surfacing, boring and honing, seat and guide work, balancing, etc. is done in-house. "We're all into racing and we live, eat and breathe this stuff," Siebert says. "One of the engines we recently did is a naturally aspirated 408 LS engine that's carbureted. It makes 740 horse naturally aspirated." drivers ed chapter 8 answers Swapping over to a set of 862 LS heads unleashes the true potential of built 5.3L engines. They can support up to a 230/238 .600" camshaft, 11:1 compression, and intake/headers for over 450 wheel horsepower. On a paired with a larger cam, the 5.3L engine really wakes up with 862 heads. They enhance the entire powerband, help it rev higher ...Jul 16, 2007 · 5.3 truck heads (casting #862 and 706) are also a very popular base casting for porting/modifying, due to their even smaller (61.15cc) chamber size which raises compression when used on a LS1/6 engine.. 6.0 truck heads (casting #317) are popular heads with the forced induction crowd, as they are basically the same as 243 heads, but with larger ... does torrid cash expire The LH8 is a 5.3L Gen. IV aluminum block engine truck engine that appeared in 2008-09 GM trucks, including the Hummer H3, Chevy Colorado, and GMC Canyon. The engine specs and information listed here is. Mechanically similar, General Motors’ LS and LS-based Vortec engines wound up on almost every branch of the GM …Lets compare the heads: Casting Number 706 / 862 Head: 1999+ LR4 4.8 Litre Truck 1999+ LM4 /LM7 5.3 Litre Truck Material: Aluminimum Combustion Chamber Volume: 61.15cc Compression Ratio: 9.5:1 Intake Port Volume: 200cc Exhaust Port Volume: 70cc Intake Valve Diameter: 1.89 inches Exhaust Valve Diameter: 1.55 inches Compare to the normal 6.0 ... allie jackson nbc Run with the 317 heads, the modified 5.3L produced 448 hp at 6,800 rpm and 398 lb-ft of torque at 5,000 rpm. After installation of the 706 heads, the power jumped to 468 hp at 6,800 rpm and 413 lb ... spectrum router setup Previously, we compared the stock 706/862 heads to the 799/243 heads on a cammed 5.3L test motor. There was much uproar among 799/243 head enthusiasts. Than... 15 prayers of saint bridget of sweden All SBC gen I and Gen II heads will bolt onto the block. The LT1 and 4 heads are set up for reverse coolant flow (i.e. the water goes from the heads then through the block) so those aren't what you want to use. The center bolt non-vortec heads (87-96) use a slightly different intake manifold. The center bolts on either side of the carb are at a ...February 25, 2024 by Ugo Anums. The C and H in your car dashboard represent the temperature gauge. The “C” means “Cool” while the “H” means “Hot”. This gauge helps you tell your engine’s temperature. I’ll explain how the engine temperature gauge works in the following sections.The LC9 engine is a 5.3L, Gen. 4, aluminum small block engine used in GM trucks and SUVs between 2007-2011. For marketing purposes, it was also known as the Vortec 5300. The engine specs and information listed here is for a stock LC9 engine. Mechanically similar, General Motors’ LS and LS-based Vortec engines wound up on … belks south boston va The Gen III have 862/706 Gen III heads, and the Gen IV have 243/799 heads. The 862/706 heads have smaller combustion chambers than the Gen IV, raising the compression ratio when swapped directly. neal funeral home obituaries lawrenceburg tn We did the research on the specs, reviews, and materials to find you the best full mattress possible. We include products we think are useful for our readers. If you buy through li...In addition to the lack of EGR provisions and steam-tube clearance, the LS6 intake differs from the LS1 in its plenum volume, runner shape, and volume. Jumping from .536 to .541 liters proved much more suitable for higher-revving applications such as the new LS6, and with the revised camshaft and cylinder head specs on the later LS1s. sim 2 driver adjustment chart Crate Engines, Gen 3-4 LS; Crate Engines, Gen 5 LT; Cylinder Head Parts & Services; Dry Sump Oil Pumps & Parts ; Fuel System Parts; Gaskets & Seals; Harmonic Balancers; High Performance Fasteners; Ignition Parts; Induction Parts; Jacking Pucks; Katech Wheels; Motorsports - TA2 Parts; Oil Pumps & Related Parts; borderlands 3 revolter The 5.3L LS Engine Family. The 5.3L LS, or Vortec 5300, is primarily a truck/SUV engine that spanned both the Gen. III and Gen. IV versions of the GM LS lifespan. It’s essentially a longer-stroke version of the 4.8L LS and powered vehicles such as the Silverado, Sierra, Yukon, and Escalade. The engine is made with both cast iron …LS 5.3L 706 / 862 ALUMINUM CYLINDER HEAD CNC PORTING SERVICE ( CUSTOMER SUPPLIED BARE HEADS ) CNC Ported LS 5.3L 706 / 862 Cylinder Heads, Customer Supplied Bare Casting. $599.95. ... Specifications . More Information; Price: $599.95: Vehicle Make: Chevy LS: Cylinder Head Material: Aluminum: Cylinder Head Style: Bare …The factory 706 head casting may be the best LS performance value going. Here's why. News. Reviews. Buyer's Guide ... Vital Specs for 317, 873, and 035 Castings. 2001+ LQ4 and LQ9 6.0-liter truck/SUV;