The L76 is a 6.0L, Gen. 4, aluminum small block engine used in both GM cars and trucks from 2007 to 2009. This article is dedicated specifically to the truck and SUV version of the L76 engine. (NOTE: Don't confuse the engine specs here with the L-76 5.4L small block which could be found in the C2 Sting Ray Corvette in 1964.)Cam specs play a vital role in compatibility as well. For example, a single-pattern cam with 224 duration and 112 LSA works best with mildly ported 706 heads. ... The amount of horsepower added by a Comp cam on a 5.3 LS with 706 heads depends on the specific cam profile and supporting modifications. Generally, this upgrade can provide a ...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! All packages will include a pair of …Upgrade your Chevrolet engine with precision-engineered CNC Ported LM4/LM7 706/862 Cylinder Heads. These remanufactured heads exceed OEM specifications, ensuring top-notch performance for your 5.3L V8 engine (03-09). Our ALL-20314PC pair of heads comes with .650 springs and 2.00/1.57 valves, making them the perfect choice for those seeking ...Dyno Review - Cammed 6.2l LS, 706 Heads | 12:7:1 CompressionCheck out the rest of our channel for dyno videos, tech, videos and more. We are a shop that desi...Nov 27, 2017 · Our fellow tech writer and dyno-flogger Richard Holdener reports a gain of roughly 15 hp with stock 5.3-liter heads on a 6.0-liter. Our 5.7-liter head test bumped the average power by 9 hp but ...706 and 862's are small bore (4.8/5.3) gen 3 heads. You might be better off picking up a set of 243/799 heads, doing a VJ and pocket porting those. Will need a newer set of valve covers though. mag2555. Guru. Posts: 4623. Joined: Sun Sep 18, 2011 3:31 pm. Location: Heading for a bang up with Andromeda as we all are.Speedmaster LS Head Studs - Speedmaster 3-Bolt Head Stud Kit 1997-03 Chevy LS - JEGS. Free Shipping over $199* Same Day Shipping before 10pm* Price Match Guarantee; ... Torque Specs with Motor Oil: 30lb 1st pass, 60lbs 2nd pass, 80lbs 3rd pass. 28lbs for exhaust ports. Torque Specs with Degrees:The 5.7L LS6 is the most powerful Gen. 3 small block engine as it came from the factory. It is an improved version of the LS1 produced for the 2001 Z06 Corvette. The LS6 powered the 2001-04 Corvette Z06 and the 2004-05 Cadillac CTS-V. Mechanically similar, General Motors’ LS and LS-based Vortec engines wound up on almost every branch of the ...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.A weak battery, an empty gas tank, and a bad battery connection are all possible causes for your rdx to fail. But aside from these factors, there are several more reasons why your car won’t start, and I’ll discuss them in this post, along with alternative solutions. 1. Dead or Weak Battery. The rdx is powered by a 12-volt lead-acid battery.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 ...Summit Racing™ Precision Cast Cylinder Head SUM-162LS210CATH. Chevy LS Cylinder head, 210cc Cathedral port Intake Runner, 64cc Chamber, 2.02 Intake Valve 1.6 Exhaust Valve, 3.898+ bore sizes, Max .600 Lift Ea. Part Number: SUM-162LS210CATH. ( 1 ) Estimated Ship Date: Today.When it comes to luxury and innovation, the Volvo XC40 is a standout in the automotive world. This compact SUV has been turning heads since its launch, thanks to its sleek design, ...The 5.7L LS6 is the most powerful Gen. 3 small block engine as it came from the factory. It is an improved version of the LS1 produced for the 2001 Z06 Corvette. The LS6 powered the 2001-04 Corvette Z06 and the 2004-05 Cadillac CTS-V. Mechanically similar, General Motors’ LS and LS-based Vortec engines wound up on almost every branch of the ...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."Read about LS engines and LS engine family online at JEGS. where we go over some of our favorite GM LS engine specs and differences. ... LS Cylinder Head Casting Number Location: externally at the far right end of the head on the exhaust-port side. ... casting # ending in 706, 852, 862, and 895 – LM4/LM7/LR4 , with 1.89 / 1.55 …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.Below are its specifications. 706 5.3L Truck Castings. Valve size: Intake- 1.89, Exhaust-1.55. Port Volume: Intake- 197cc, Exhaust- 69cc. Combustion Chamber: 61.5 cc. Benefits of Casting Chevy 706 Heads. Most affordable, powerful, and effective. Superior to 862 heads in reliability and performance.Cylinder Head Bolts: 65 ft.-lbs. Screw-In Rocker Arm Studs: 50 ft.-lbs. Intake Manifold Bolts (Cast Iron Heads) 30 ft.-lbs. Oil Pump Bolt ... Bellhousing Bolts: 25 ft.-lbs. Exhaust Manifold Bolts: 25 ft.-lbs. Notes. These specs are for stock-type bolts with light engine oil applied to the threads and the underside of the bolt head. Moly and ...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 ...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.Most heads are swappable but some will reduce power. Some won't fit as some heads are designed for a wide bore. But don't worry, most LS heads are so good ...The intake and exhaust ports on the 243 heads are larger than those on the 799 heads, which allows for more air and fuel to enter the engine. This can result in higher horsepower and torque output. However, the smaller ports on the 799 heads can provide better velocity and airflow at lower RPMs, which can be beneficial for street-driven vehicles.NA Hyd. Roller - 202/210 - .472/.478 - 111 - 97 Gen III LS1 Corvette 350 uses 1.7 roller rockers Here is the 140 cam info in more detail, this is from crane who sells a copy of it: Part Number: 968821 Grind Number: 3927140 Engine Identification: Start Yr. End Yr. Make Cyl Description Engine Size Configuration Valve Setting: Intake .024 Exhaust ...862 Heads Specifications. Here are some common of the 862 cylinder heads: ... No, the 706 heads are pretty superior to the 862 heads. Recommended: Chevy 350 Head Gasket - A Detailed Overview. Q: What heads are on LM7? General Motors designed LMS engines with the 862 heads installed. It featured an aluminum design and a combustion chamber volume ...Chevrolet LS Gen. 3, Aluminum Block Torque Specs. Views: The following specs apply to RPO codes: LS1; LS6; LM4; L33 **Click the blue links in the table for more detailed information** Fastener Type: ... Cylinder Head Bolts: M11 x 2.0 x 155.5: 22 ft.-lbs. 90 degrees: 90 degrees: M11 x 2.0 x 101.0: 50 degrees: M8 x 1.25 x 46.0--22 ft.-lbs. Rocker ...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 ...Why Is 862 Heads A Better Choice Than 706 Heads? Sand-casted 862 heads have proved to be better than others. They perform well, even with smaller exhaust valves ranging from 1.8 to 2.0 intake runners. 862 heads also possess small combustion chambers that increase the overall compression ratio provided by the 862 LS heads in cars like Chevy.Record the amount of water added and the mass of the soil-filled mold. 5.1.3 Remove the material from the mold and cut vertically through the centre, taking a representative portion to determine and record the moisture content according to the Method of Determination of Moisture Content of Soils (MTO Method of LS-701).Engine Mods - 5.3L 706 heads on a LS1 make 11:1 compression? - read that 9.5 : 1 is the stock head specs of a 706 but that is on a 5.3 engine. Is the compression closer to 11:1 on a LS1 block?The 5.3 liter LS-series engine was offered from 1999-2014 and has a 3.78” bore x 3.62” stroke. The block was offered in both cast-iron and aluminum with aluminum cylinder heads. Camshaft specifications varied depending on the year and RPO code of the engine.Dyno Review - Cammed 6.2l LS, 706 Heads | 12:7:1 CompressionCheck out the rest of our channel for dyno videos, tech, videos and more. We are a shop that desi...The Gen III engines were the firstborn from the original LS1 in 1997 through 2002. These engines used a 24x crankshaft trigger wheel and a cam sensor mounted at the rear of the camshaft. Roughly in 2003, GM upgraded the LS into its Gen IV configuration with a number of changes. The upgrades included a 58x crank trigger wheel with the …Small Block Chevy LS Cylinder Heads by Casting Number 10215339 - LS Small Block V8 1997 346, LS1, aluminum, 68cc chambers . 12480005 - LS Small Block V8 2000 LS1, GTZ, aluminum, 38cc chambers, 2.125/1.625 valves, angle plugs . 12556743 - LS Small Block V8 1999 325, 5.3L, aluminum, truck, van . 12558806706/852/862 —1999-and-up 4.8 and 5.3 truck heads: 61.15cc. 035/317/873 —1999-and-up LQ9 and LQ4 6.0 truck heads: 71.06cc. 799 —2005-and-up 4.8 and 5.3 truck heads; these are... See moreOption 1: AFR's 210 LS1 Enforcer Cylinder heads feature our Permanent Mold "As-Cast" Technology surfaces on the intake runners, exhaust runners and combustion chambers that allows for extremely accurate and repeatable port location/performance. This budget friendly head is perfect for your OEM engine operating below 6300 RPM.When pitched against other LS heads, LS3's ports are undeniably much larger, allowing increased air to and fro the combustion chamber. ... LS3's casting number is 821, meaning drivers will recognize a cylinder head is LS3 if it has the 821 heads specs embedded. 821 heads have lighter valve intakes and yellow spring packages, which separate ...706/ 862 CNC Cylinder Head Porting Service. $ 1,098.99. Add to cart. Category: Chevrolet. Description. Reviews (0) Our 706 & 862 ported heads include: Our in house CNC port. PCD surfaced to your desired chamber size.* Part # : 862 casting also replaces 706 * 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 Valve Diameter: 1.55 inches[Editor's Note: This L33 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.]. The Gen. 3 aluminum block L33 engine came in Chevy and GMC trucks from 2005-07.Jan 21, 2022 · RPO L99 and LS3 cylinder heads are aluminum with 68cc combustion chambers, rectangle intake ports with 257cc runners, D-port exhaust with 87cc runners, 2.165˝ intake valves and 1.590˝ exhaust valves. These heads can be CNC-ported to improve on flow and milled for higher compression. These heads are almost the same, but the L99 heads used a ...Upgrade your Chevrolet engine with precision-engineered CNC Ported LM4/LM7 706/862 Cylinder Heads. These remanufactured heads exceed OEM specifications, ensuring top-notch performance for your 5.3L V8 engine (03-09). Our ALL-20314PC pair of heads comes with .650 springs and 2.00/1.57 valves, making them the perfect choice for those seeking ...GMC / CHEVY SUBURBAN 5.3 LITER V8 REBUILT CYLINDER HEAD. $225.00. Casting #. THIS IS FOR CASTING NUMBER 862 AND 706. WE ARE NEEDING THE CASTING NUMBER OFF YOUR CYLINDER HEAD. PLEASE FILL OUT THE FORM AT CHECKOUT OR GIVE US A CALL AT 800-942-4503 IF YOU HAVE ANY QUESTIONS. This listing is for a rebuilt GM 5.3 liter V-8 cylinder head.Jun 3, 2022 · The 243 heads came on the powerful LS6 engines from 2001 to 2006. Although the heads were initially made for C5 Corvettes, they later found their use in engines like the truck-spec LQ9 and LQ4. The LQ4 and LQ9 had 6 cc larger combustion chambers. LS6 was also used in some Camaros and Pontiac GTOs. The 243 heads are cast out of aluminum alloy ...The LY2 is a 4.8L iron-block Gen. III engine that was introduced in 2007. It replaced the LR4 as the Vortec 4800. It was available in GM pickups, vans, and SUVs until 2009. These engines are strong and durable. Many people use them with boost or nitrous. With upgraded internals, the blocks can handle over 1,000 hp.The Quadro series is a line of workstation graphics cards designed to provide the selection of features and processing power required by professional-level graphics processing soft...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.Cylinder Head, Pro Action LS Cathedral Port, Bare, Aluminum, 65cc Combustion Chamber, 0.570 in. Lift Springs, 15 Degree, Chevrolet, LS, Each. Part Number: RHS-54240-06. Not Yet Reviewed. Free Shipping; Special Order...Loading Not Available At This Time. This product cannot be ordered at this time. Future availability is unknown.Cam specs play a vital role in compatibility as well. For example, a single-pattern cam with 224 duration and 112 LSA works best with mildly ported 706 heads. ... The amount of horsepower added by a Comp cam on a 5.3 LS with 706 heads depends on the specific cam profile and supporting modifications. Generally, this upgrade can provide a ...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 , …Texas Speed Brawler LS6 Style Cathedral Port CNC Cylinder Heads. Fits 1997-2013 LS-Based Engines 4.8L 5.3L 5.7L 6.0L . If you are looking for great factory style replacement/upgraded LS1/LS6 Cathedral Port cylinder head, look no further than these fully CNC ported Brawler cylinder heads! These all-new castings are modeled after a factory GM 243 ...Vortec LS-series heads cannot fit on the classic SBC-style engine. ... Chevy Cylinder Head LS 5.3L V8 706/862 Aluminum - Pair, Year:99-06 . David Perry. Great product Great customer service Quick delivery. W . CNC Ported LM4/LM7 706/862 Cyl Heads .650 Springs 2.00/1.57 Valves PAIR .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 ...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 ...This head is "designed to have the intake configuration of a LS3 head, but fit the smaller bore blocks of the LS1 and LS6 engines.". Hardest of the Hardcore: LSx-DR - Part Number 19166979. Huge CNC'd intake ports, huge valves, and huge power potential all define the LSX-DR heads. LSX-DR Specs:Dyno Review - Cammed 6.2l LS, 706 Heads | 12:7:1 CompressionCheck out the rest of our channel for dyno videos, tech, videos and more. We are a shop that desi...CNC Ported LS 5.3L 706 / 862 Cylinder Heads, Customer Supplied Bare Casting. $599.95. Buy in monthly payments with Affirm on orders over $50. Learn more. Options. Resurface for MLS Gaskets + $150.00. Valve Job with new Valve Guides + $400.00. Cylinder head Assembly + $150.00. Add to Cart.Cylinder Head, Pro Action LS Cathedral Port, Bare, Aluminum, 65cc Combustion Chamber, 0.570 in. Lift Springs, 15 Degree, Chevrolet, LS, Each. Part Number: RHS-54240-06. Not Yet Reviewed. Free Shipping; Special Order...Loading Not Available At This Time. This product cannot be ordered at this time. Future availability is unknown.The 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.1291 posts · Joined 2007. #12 · Feb 3, 2010 (Edited) i purchased at set of 799 heads last summer for $100.00 bucks ,from another member on this forum. keep us posted when this project is complete. im going the budget daily driver route myself. i will be topping mine of with a fast,and a ported throttle body.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 blocks (LM7 ...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...Sega has confirmed that it's buying Finland's Rovio in an all-cash deal worth €706 million ($775 million). Japanese gaming giant Sega has confirmed that it’s buying Finland’s Rovio...Like all RHS cylinder heads, the Pro Elite LS3s are cast with the patented Clean Cast Technology process that eliminates casting flaws and promotes a smoother internal surface finish for greater air and coolant flow. Specifications. • CNC-machined 263cc intake and 103cc exhaust runners. • CNC-machined 68cc combustion chambers with 45 ...Understanding GM LS-Series Cylinder Heads. Before I get into the the meat of the book—the spec charts—there are a few things you need to know. They include information on converting from a cathedral port to a …GM LS2 LS6 Gen III Gen IV Cylinder Head 799 Assembly w/ Rocker Arms OEM-This is a Remanufactured OE Stock LS2, LS6, 4.8L , 5.3L, 5.7L, 6.0L Gen III / ... * Specs : Combustion Chamber Volume: 64.45cc Intake Port Volume: 210cc ... GM Chevrolet 6.0L LS GEN IV 58X Tooth Crankshaft POLISHED STND Size 12685651. Your Price: $275.95 Out of Stock. Free ...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...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? …Despite numerous differences the Gen III LS Engine and Gen IV LS Engine cylinder blocks share a lot of the same traits. 4.400 Bore Spacing (same as the original SBC) Deep Skirt Block with Six Bolt Cross Bolted Main Bearing Caps (reminiscent of the old Ford side oilers, FE, and some early hemi blocks) Center Main Thrust Bearing. 9.240 Deck Height.The first has to do with port shape. The LS6 and the later LQ9-LQ4 heads used reshaped intake ports and D-shaped -- as opposed to oval-shaped -- exhaust ports for better flow: 200 cfm intake and 70 cfm exhaust for the 241's, and 210 intake and 75 cfm for the 243's. The second major difference is that the LS6 heads used hollow, sodium-filled ...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.Most heads are swappable but some will reduce power. Some won't fit as some heads are designed for a wide bore. But don't worry, most LS heads are so good .... Conclusion. 862 cylinder heads are known for their eATK High Performance LS3/L92 255cc Aluminum The 799 head is designed and made to be compatible with high-performing LS engines, such as 4.8L, 5.3L, 5.7L, or 6.0L, etc. These vehicles require maximum airflow, making the 799 head an ideal choice. On the other hand, the 862 head is compatible with LR4, LM4, and LM7 and such engines where low torque is more essential than better horsepower. Here’s a quick data sheet on the specs of 799 heads. Due to the Well I found this while looking for the torque specs for LS3-L92 heads. Its a complete list of all the torque specs for Gen IV 6.2L engines. Seems to be straight off the service manual for Gen IV motors, specifically Corvettes, LS3/7. Got it from Pace Performance so credit to them. Hope it helps and saves some search time. -Nate The LS2 is a 6.0L, Gen. 4, aluminum small block engine that came in...
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