Every single week I have someone calling, texting, or messaging me about a set of LS heads they have, wondering if they will work for the 700-800 horsepower combo they want to build. Every once in a while I have someone ask which one will make real power, meaning more than 1,000. Or worse yet, […]The LS2 is a Gen. 4, 6.0L, aluminum small block engine. The engine specs and information listed here is for the stock LS2 used in GM passenger cars from 2005-2007. Mechanically similar, General Motors' LS and LS-based Vortec engines wound up on almost every branch of the GM family tree: Chevy, Pontiac, GMC, Cadillac, Buick—heck, even Saab ...Description. GM CHEVY TRUCK SILVERADO AVALANCHE TAHOE TRAILBLAZER EXPRESS GMC 4.8 5.3 ALUMINUM LS4 OHV CYLINDER HEADS. CASTING NUMBER 706 AND 862 ARE INTERCHANGEABLE. SO IF YOU HAVE CASTING # 706 AND WE SEND YOU AN 862 IT WILL BOLT UP PERFECT. VEHICLES & YEARS APPLICABLE: These heads are sold as a pair. WE NEED A CASTING NUMBER, YEAR AND MODEL.The L20 4.8L has a 3.780 in. bore diameter. The cylinders can be bored to LS1 size (3.898 in. +). However, that will thin out the cylinder walls. A smaller bore size will keep the block strong and rigid. The engine specs and information listed below is for the stock L20 engine. Mechanically similar, General Motors' LS and LS-based Vortec ...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 ...Unless your building something something over 7000rpm an OEM head is the way to go. People routinely get 1000hp out of them. On 4.8, 5.3, 5.7, NA 6.0 - I always recommend the 243. Maybe even milled a touch if needed. On 6.0+ the 823 variant of the rectangular head is great. 65 Chevelle Malibu 2dr HT LS Swapped.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 ...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 ...706 Heads. Not surprisingly, the 706 truck heads offered both the smallest port and chamber volumes. The combustion chambers on the 706 heads measured 61.5 cc, while the intake and exhaust port...After installation of the TrackMax cam, the power output of the 6.0L LY6 jumped from 443 hp and 467 lb-ft of torque to 514 hp at 5,900 rpm and 493 lb-ft of torque at 4,600 rpm. Gandrud Chevrolet ...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 …Elgin Industries' LS Engine Lifters and lifter guides include Made in USA LS7 style lifters HL-2148. We also offer de-act lifters for both AFM Active Fuel Management HL-7011, and DFM Dynamic Fuel Management HL-7025. Hydraulic lifters and lifter guide trays meet or exceed OE production standards so you can trust these for another 1/4 million ...The LH9 engine is a 5.3L, Gen. 4, aluminum small block engine used in GM trucks and SUVs between 2010-2012, including the 2010 Hummer H3. In 2010, the LH8 was replaced by the LH9. The LH9 was upgraded with VVT and flex fuel capability. It was available in the H3 for 2010. It was also available in the mid-size pickups until 2012.706 5.3L HEADS vs 241, 799/243 vs 317s. WHICH HEADMAKES MORE? We compared the four most popular stock LS heads in a back to back shootout. We ran the 706/862...what stock ls head makes the most power? which cam should i run in my 6.0l? what is the best stock 6.0l cam to use? stock 6.0l upgrades! are the 706/862 head...Feb 18, 2024 · This also means that they are usually cheap to collect or replace. 706 heads tend to be more popular than 243 heads with those who run naturally aspirated engines. While they don’t have the same size combustion chamber they also don’t have the tendency to lower the compression ratio and reduce horsepower. When looking to replace your heads ...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 …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 ...GM 5.3 LS Full #706-862 quantity. Add to cart. Part ... Cylinder Head Options; Technical Specs; Additional information; N/A. N/A. N/A. N/A. Additional information ...To properly install your LS Cylinder Heads, follow the steps below. This will prevent oil and coolant leaks and a loss of compression from a blown head gasket. ... LS Cylinder Head Torque Specs: Engine Family: Bolt Size: First Pass: Second Pass: Final Pass: Gen. 3 (LS1, LS6, etc.) M11 x 155.5mm: 22 ft.-lbs. 90 degrees: 90 degrees: M11 x 101mm ...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 4.8L engine is also known as the Vortec 4800. The engine specs and information here is for a stock LR4 engine. 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. Mechanically similar, General Motors' LS and LS-based Vortec engines wound up on ...Today is an interesting video and a followup to one of my previous videos comparing all of the factory big block mopar heads except that this time I will be ...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 ...The L77 is a Gen. 4, 6.0L, aluminum small block engine used in GM cars between 2011 and 2017. The information listed here is for a stock L77 engine. Mechanically similar, General Motors' LS and LS-based Vortec engines wound up on almost every branch of the GM family tree: Chevy, Pontiac, GMC, Cadillac, Buick—heck, even Saab, Hummer, and ...LS-SERIES VALVE SPRINGS AND SPRING KITS 12499224 LS VALVE SPRING KIT. Beehive-style springs; Used on LS3, LS2/LS6 cylinder heads; Installed height: 1.800" @ 90 lbs. pressure; 1.250" @ 295 lbs. pressure; Max lift: .550" Includes 16 of P/N 12625033; 12625033 VALVE SPRINGS.May 7, 2023 · Street Performance of The 706 Head. It’s worth noting that the 706 heads have a larger combustion chamber than the 862 heads, which measures at around 71cc. While this might sound like a disadvantage, it can actually be helpful for engines running on lower-octane fuel or those using forced induction.The L96 engine is a 6.0L Gen. 4 small block engine used in GM trucks and SUVs from 2010 to 2017. It replaced the LY6 and added Flex Fuel capability. For marketing purposes, it was also known as the Vortec 6000. The engine specs and information listed here is for a stock L96 engine. Mechanically similar, General Motors’ LS and LS-based …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.The factory 706 head casting may be the best LS performance value going. Here's why. ... Vital Specs for 706, 852, and 862 Castings. 1999+ LM7 5.3-liter/LM4 4.8-liter; Material: Aluminum;This is a SET of Rebuilt OE Stock 6.0L LQ4 / LQ9 Cylinder Head Assembly. Part # : 317 , 12562319 , 12562317. Description : Stock 6.0L LQ4 / LQ9 LS Series Cylinder Head Assembly. Specs : Combustion Chamber Volume: 70.03cc Intake Port Volume: 210cc Exhaust Port Volume: 75cc Intake Valve Diameter: 2.00 inches Exhaust Valve Diameter: 1.55 inchesLast updated on 05/06/2024. The LS4 engine is a Gen. 4, 5.3L, aluminum small block engine used in GM cars between 2005 and 2009. It is unique because it was the only LS engine used in front-wheel drive vehicles. The FWD LS4 had cathedral port cylinder heads and used Active Fuel Management (AFM). The engine was not Flex Fuel (E85) …Every single week I have someone calling, texting, or messaging me about a set of LS heads they have, wondering if they will work for the 700-800 horsepower combo they want to build. Every once in a while I have someone ask which one will make real power, meaning more than 1,000. Or worse yet, […]The LQ9 is a 6.0L Gen. 3 small block engine used in GM trucks between 2002 and 2007. For marketing purposes, it was also known as the Vortec HO 6000 or VortecMAX. The information listed here is for the stock engine. Mechanically similar, General Motors' LS and LS-based Vortec engines wound up on almost every branch of the GM family tree ...The AFR LS3 heads also featured 95-cc exhaust port, 69-cc combustion chambers and a 2.165/1.60 valve package. The .750-inch deck thickness should make the heads plenty popular with power adder ...Quote: Originally Posted by lil john. True Tuskyz, also the 821's have less meat, *Some porters don't like to go over 270'cc while the the 823's are good to around 280'cc. Phil @ Advanced Inductions gave me a quote on the 280cc version on my #821 heads. Reply Like. 08-12-2016, 09:11 AM.DESCRIPTION Professionally rebuilt 4.8 / 5.3 Chevrolet / GM cylinder heads Heads fit 1996- 2007 engines. These cylinder head's casting numbers are: 706 ONLY! These heads do interchange with the 862 casting number heads. THESE HEADS HAVE BEEN REINFORCED BY TIG WELDING AROUND THE FACTORY ISSUE HEAD BOLT HOLES IN THE CENTERS OF THE CYLINDER HEADS THIS IS FOR A PAIR HEADS! DETAILS Heads are ...The LY5 engine is a 5.3L Gen. IV iron-block engine used in GM trucks and SUVs between 2007 and 2009. For marketing purposes, it was also known as the Vortec 5300. The information listed here is for a stock LY5 engine. Mechanically similar, General Motors' LS and LS-based Vortec engines wound up on almost every branch of the GM family tree ...WHAT STOCK LS HEAD MAKES THE MOST POWER? WHICH CAM SHOULD I RUN IN MY 6.0L? WHAT IS THE BEST STOCK 6.0L CAM TO USE? STOCK 6.0L UPGRADES! ARE THE 706/862 HEAD...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...This is a SET of Rebuilt OE Stock 6.0L LQ4 / LQ9 Cylinder Head Assembly. Part # : 317 , 12562319 , 12562317. Description : Stock 6.0L LQ4 / LQ9 LS Series Cylinder Head Assembly. Specs : Combustion Chamber Volume: 70.03cc Intake Port Volume: 210cc Exhaust Port Volume: 75cc Intake Valve Diameter: 2.00 inches Exhaust Valve Diameter: 1.55 inchesMuch like that very realistic scenario, Chevy's L76 and L77 engines are actually LS engines. And though the majority of people might call them Vortec engines, GM's small-block 4.8L, 5.3L, 6.0L, and 6.2L truck engines from 1997 through Gen IV are still very much members of the LS engine family. The LS1 was the first mill from GM's Gen III ...706 to 241 How much do 241s need to be milled to maintain the same compression as the stock 706 heads? ... Pittsburgh, PA Posts 3,581. you wont gain anything but a loss in wallet. the 5.3 heads flow same as the stock ls1 heads do 2002 Lightning - GT headed 5.5Litre w/ Twin 7665s 2002 Silverado - 427Lsx w/ Twin gt4202s 2010 Silverado crewcab Z71 ...1697 posts · Joined 2011. #3 · Aug 19, 2012. From what I understand the crank and rods are the same specs. The bore and stroke of a 5.3 is 3.780 x 3.622. Rods are 6.098 in length. The iron block can be bored to an LS1 bore of 3.900. The aluminum block has sleeves and can be bored .010. So you can use your crank and rods and a set of LS1 pistons.Windows/Mac/Linux: Mozilla today released the first beta build of Firefox 4, complete with a new look, new features, and support for more HTML5 specs. Here's a quick screenshot tou...Stock springs are a no go, valve springs aren't hard at all just a pain in the ass and time consuming. Comp's 918's are a popular replacement as are the Patriot duals. I'd go with duals if you wanted to spin the motor higher than 6000. think max lift is like .500,,,i ran a 522.529' on my stock springs on my 5.3. Newark, Tx.Whether you're building or buying, the perfect computer isn't necessarily the product of the most expensive parts. Your perfect spec list makes up the machine that works best for y...The LS3 contains a 103.25 mm cylinder bore size, while the LS7 is measured at 104.8 mm. The LS3 engine has an 8-cylinder design with a 90-degree crankshaft angle and 4 valves per cylinder, with two valves per cylinder on each camshaft (via pushrods) and four camshafts that are timed together by gears in the front of each head/block assembly ...CHEVY SILVERADO 4.8L REBUILT CYLINDER HEAD 706 & 862 CASTING ONLY. $225.00. Casting #. This listing is for a rebuilt GM 4.8 liter V-8 cylinder head. These heads come on GMC and Chevrolet trucks and SUV's. For other models see our store listings. This head is completely rebuilt. It has been pressure checked for cracks and resurfaced. Guides and ...I compared a set of stock 799/243 cathedral-port heads vs the 823 LY6 rec-port heads on an LY6 short lbock. The motor was equipped with a healthy Comp cam an...3,581. they used to install the 2.0 valves into the 5.3 heads but TSP found out that installing the larger valve actually hurts the flow of the head since the runner was never designed for that size intake valve. 2002 Lightning - GT headed 5.5Litre w/ Twin 7665s. 2002 Silverado - 427Lsx w/ Twin gt4202s.Cylinder Head, GenX® 205, Competition Ported, Assembled, 58cc CNC Chambers, GM LS Vortec, Each See More Specifications | Check the Fit. Trick Flow® GenX® 205 Cylinder Heads for GM LS 4.8L/5.3L/5.7L (Vortec) TFS-30510001-C00 TFS-30510001-C00. Part Number: TFS-30510001-C00. Estimated Ship Date: Aug 22, 2024. $1,184.99. Overview.Oct 14, 2019 · Had 10.7/1 comp, 243/258/110 comp cam with .625" ish lift. sv intake, 243 heads ported reasonably well with 2.02" 1.56" valves 50* seats, whitener 4150 carb. Pump gas pulls were the best on tq vs av gas but same hp. It made 590 Lbs TQ and 625 HP. it came in the start of the pull at 4000 rpm making 575 LBs.The 1981 Chevrolet C-10 truck was part of a line of C- and K-series trucks produced by the carmaker for decades. The truck came in a number of variations with different engine opti...This head is intended for blocks that feature a minimum cylinder bore diameter of 4.00 inches. The LS3 cylinder head has 260-cc intake runners and 92-cc exhaust ports. In addition, it has a combustion chamber volume of about 68.4 cc. These heads fit any LS engine with cylinder bores of 4.000 inches or larger.The LQ9 is a 6.0L Gen. 3 small block engine used in GM trucks between 2002 and 2007. For marketing purposes, it was also known as the Vortec HO 6000 or VortecMAX. The information listed here is for the stock engine. Mechanically similar, General Motors’ LS and LS-based Vortec engines wound up on almost every branch of the GM family tree ...DESCRIPTION Professionally rebuilt 4.8 / 5.3 Chevrolet / GM cylinder heads Heads fit 1996- 2007 engines. These cylinder head's casting numbers are: 706 ONLY! These heads do interchange with the 862 casting number heads. THESE HEADS HAVE BEEN REINFORCED BY TIG WELDING AROUND THE FACTORY ISSUE HEAD BOLT …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 , …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 …The Chevy LT1 heads will not work on the older non LT1 engine blocks, due to the LT1 having a reverse coolant flow. I have heard of people making them work by drilling passages on the front side of the cyl heads and using some sort of coolant tube set up, but I'm not sure how or even if this is possible. Steve.You've seen what Boxee's beta media center software will look like. Now you can peek at pictures and specifications for D-Link's official Boxee Box, a small computer with HDMI outp...Object moved to here.This handy LS resource page is a good one to bookmark if you're considering an LS crate engine for a swap, or looking for a 6.2L (about 378 cubic inches) LS short block to start a project. Learn more about each LS engine displacement: * 4.8L LS Engine Guide: Block Specs, Swap Resources & Build Info. * 5.3L LS Engine Guide: Block Specs, Swap ...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.OEM GM 706 cylinder heads removed & remanufactured at 30k miles. • Pressure test for cracks & spring rate pressure checked. • Any broken exhaust studs are removed, and all threaded holes are checked, none are stripped. ... A++SELLER NICE SET OF USED 706 LS HEADS FOR GREAT PRICE. See all feedback. i***e (188) - Feedback left by buyer i***e ...Dec 12, 2008 · Age. 34. Posts. 1,561. Red. 2001 Camaro SS A4. 706 heads on '01 LS1. Just wondering if anyone has played around with this before...I have access to some 5.3 heads (706) and was wondering how how these would do on the LS1 and what type of gains I could see with these. 12-01-2008, 05:31 PM #2.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...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...The only difference is the marking stamped on top of the metal half (the casting number), stating that it is a 706 or 862. What LS motor has 862 heads? The LSA, LS9, and LT5 engines have the cylinder head designation of 862. The LS9 motor (also known as LSA) has 862 heads. It produced 580 hp in the ZR1 Corvette and 580 hp in …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.Trick Flow® GenX® 205 Cylinder Heads for GM LS 4.8L/5.3L/5.7L (Vortec) TFS-3051B001-C00. Cylinder Head, GenX® 205, Competition Ported, Bare, 58cc CNC Chambers, GM LS Vortec, Each. Part Number: TFS-3051B001-C00. Estimated Ship Date: Aug 14, 2024 if ordered today.The LS2 is a 6.0L, Gen. 4, aluminum small block engine that came in both cars and trucks. The engine specs and information we're sharing here are for the LS 2 that was used in GM trucks and SUVs between 2005 and 2009. The information listed here is for a stock LS2 truck engine. Mechanically similar, General Motors' LS and LS-based Vortec ...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.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 ...The combustion chamber diameters can play a big role in hindering flow and performance. The 706/862 combustion chamber diameter measures out at around 3.670" and the 243/799 combustion chamber messages out at around 3.880" and giving the fact that the LM7 5.3L engine bore is 3.780" this more than likely has something to do with the power loss ...As mentioned about the LS 823 heads specs, its bigger intake port owns a 70cc, whereas the common 243 L6 cylinder heads have basically a smaller volume at 64cc. ... 823 vs 706 Heads. The 706 cylinder heads are built to generate excellent performance, which can reach up to 4,000 rpm.These large-runner heads have a 12-degree valve angle, like stock, and are compatible with factory LS7 rocker arms and stands. The heads can accommodate 1.625-inch-diameter springs, and several are available. A 4.125-inch-or-larger bore is required. Base price is $1,130 each, fully assembled, through Summit Racing.BARE GM LS 243 HEAD - 4.8L, 5.3L & 6.0L. Generation III V8 cathedral intake port cylinder head. Casting 12564243. For truck, van, SUV and perfomance applications. Used on LS6, L33, L20, LH6, LY5, LMG, LC9,LS4, LH8, LS2, LFA, LZ1 engines. Generation III cylinder head for V8 truck, van, SUV and perfomance applications often called an LS6 head. It ...Cylinder Head, Enforcer, Aluminum, Assembled, 64cc Chamber, 210cc Intake, Cathedral Port, Chevrolet, LS, Each See More Specifications | Check the Fit. AFR 210cc LS1 Enforcer Cylinder Heads 1501 AFR-1501. 5 out of 5 stars. Part Number: AFR-1501. Estimated Ship Date: Tuesday 5/28/2024. ... AFR 210cc LS1 Enforcer Cylinder Heads.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 …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 ...DESCRIPTION Professionally rebuilt 4.8 / 5.3 Chevrolet / GM cylinder heads Heads fit 1996- 2007 engines. These cylinder head's casting numbers are: 706 ONLY! These heads do interchange with the 862 casting number heads. THESE HEADS HAVE BEEN REINFORCED BY TIG WELDING AROUND THE FACTORY ISSUE HEAD BOLT …Compression: 9.5:1. Chamber Diameter: 3.876. Target Bore Size: 4.000. Combustion Chamber: 64 cc. Compatibility: 4.8-liter and 5.3-liter truck engines. What engine has 799 …The L76—like its LS2 sibling—is a 6.0L, Gen. 4, aluminum small block engine that was used both in GM cars and trucks. The L76 is an adapted version of the LS2, featuring new rectangle port cylinder heads and Active Fuel Management (AFM). The L76 was available in the Pontiac G8 GT from 2007-09. It was also used in some Australian Holden cars.Milling Heads for a desired Compression Ratio. Enter the requi, ddawson. 15570 posts · Joined 2004. #4 · Sep 29, 2008. T, If you’re in the market for a compact SUV that offers style, versatility, and advanced features, look no further t, The 243 heads came on the powerful LS6 engines from 2001 to , Upgrade your Chevrolet engine with precision-engineered CNC Ported LM4/LM7 706/862 Cylinder Heads. These remanufa, Stock out-of-the-box Vortec heads have approx. 480HP potential naturally-aspirated. Fully race-ported flowing 275 cfm @, 706 Heads: Cast Iron or Aluminum: Cathedral: Varies: 2 valves per cylinder: Small-Block and LS Engines: Good pot, Lingenfelter offers our CNC ported version of the LS7 aluminu, Torque Specs Engine Parts/Bolts Torque: Camshaft Retainer Bolts, IIRC, only the very first LQ4s from the 2000s era had , LQ4 with 317 heads: CR = 9.41:1 (advertised CR) DCR = 8.2, The 317 heads can flow up to 20 cfm at specific lift points more , 706 Heads: Cast Iron or Aluminum: Cathedral: Varies: 2 valves p, Why Is 862 Heads A Better Choice Than 706 Heads? Sand-casted 862 he, These large-runner heads have a 12-degree valve angle, like st, A pair of Chevrolet LS 706 cylinder heads With complete valve job, The 862 head is commonly utilized in high-performance cars,, To properly install your LS Cylinder Heads, follow .