The MLS head gaskets came in our Fel-Pro master gasket kit (PN 2817, $380). That may seem like a big chunk of change, but it included every single gasket and seal needed to rebuild any Gen III LS ...By what your saying you want a factory head. Here is a link to all the specs, the testing was on a 5.3 Surprising HP Numbers From Our Stock LS Cylinder Head Test Your 317 head has the largest chambers 71cc and your LQ4 had 9.4 to 1, so all the other heads will raise that CR if that matters to you.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 , …2014-present - Gen. V, 6.2L, small block. The new LT1 is the Gen. 5, 6.2L, small block engine used in Chevrolet performance cars. It was introduced in the 2014 C7 Chevy Corvette. LT1 engines are all-aluminum and use Active Fuel Management (AFM) and Variable Valve Timing (VVT). The engines also use direct fuel injection technology, which ...ddawson. 15570 posts · Joined 2004. #4 · Sep 29, 2008. The 317 is a 243 but with a larger CC. I have the 317 on my car with 70CC. 1969 Corvette, 427 Convertible. 496CI Edelbrock Heads, Quickfuel Carb, LS6 Intake. Straub Technologies 229/235 .590/.559 107, Hedman Headers, Magnaflow Exhaust. Speed Direct Rack and Pinion, Semi Coilovers ...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) LS7/C5R/LSX blocks. 210-cc “as-cast” intake ports. 70-cc “as-cast” exhaust ports, same as production LS6.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.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.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 . 12558806The 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 ...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.No Upgraded Valve Springs. Chevrolet Performance - LS7 Spring Pack w/ Retainers, Seals. $ 650.15. Brian Tooley Racing - .685" Lift Valve Spring Kit with Titanium Retainers for LS7 Engines (SK702) $ 359.00. PSI - Beehive Spring Pack, .625" Lift (1511ML) with Titanium Retainers. $ 470.00.The Jeep 4.0-liter engine uses a cast iron block and cylinder head. It comes in both an inline-6 and inline-4 cylinder version and the specifications vary, depending on the vehicle...Back in the early LS1 days, the 706 head was the best bang for the buck. When 706's are ported correctly with new larger 2.00 or 2.02 intake valves, 1.6 exhaust valves and good valve job, good springs, they are almost as good as ported LS6/243/799 cylinder heads. The 5.3/4.8 706 head was the go to choice before 243/799 castings became more ...Run in this trim on the dyno, the little 4.8L produced peak numbers of 409 hp at 6,600 rpm and 367 ft.-lbs. of torque. Now it was time for boost! Boost was supplied by the S475 turbo from Summit Racing. The twin-scroll, T6 turbo featured a 75-mm compressor (inducer) and an 88-mm turbine (exducer).Feb 10, 2023 · To help make power, the SP 5.3L also featured a set of ported 706 heads. Katech provided the porting for the 706 heads, though the porting program retained the factory valve sizes. Given our sizable cam choice, the Katech 706 heads were also treated to a dual valve spring package from Brian Tooley Racing , stock rockers, and hardened Trend ...Cylinder Head, GenX® 215, CNC Competition Ported, Assembled, 64cc CNC Chambers, Ti Retainers, GM LS1, Each See More Specifications ... Trick Flow® GenX® 215 Cylinder Heads for GM LS1 TFS-3061T001-C01 TFS-3061T001-C01. Part Number: TFS-3061T001-C01. Estimated Ship Date: Aug 22, 2024. $1,330.99. Overview. Applications. Recommended Parts ...Buy GM 4.8L 5.3L LS REMANUFACTURED Cylinder Heads 862 Assemblies w/Rocker Arms SET OF 2 706 (Renewed): Cylinder Heads - Amazon.com FREE DELIVERY possible on eligible purchases ... * Specs : Combustion Chamber Volume: 61.15cc Intake Port Volume: 200cc Exhaust Port Volume: ...LS2 heads work by increasing the airflow to the engine, which in turn improves engine performance. This increased airflow is achieved through several design features, including larger ports, larger valves, and better flow characteristics. LS2 heads are designed to work with LS engines and are typically a direct bolt-on replacement for the …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.706 Heads Specs. High-performance cylinder heads like the Chevy 706 LS Heads provide a ton of power at an unbelievable cost. They are the most cost-efficient and efficient remanufactured cylinder heads available, and they may be used to produce 4.8L, 5.3L, or even 6.0L LS engines. Their tiny cross-section reveals a high-velocity, smaller-volume ...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 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.The L59 engine is a 5.3L Gen. III iron-block engine used in GM trucks and SUVs between 2002 and 2007. It is essentially the flex-fuel version of the LM7 . For marketing purposes, it was also known as the Vortec 5300. The engine specs and information listed here is for a stock L59 engine. Mechanically similar, General Motors’ LS and LS-based ...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.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.Brawler LS3 Style CNC Ported Cylinder Heads w/ TSP .660" Spring Kit and Titanium Retainers $ 1,836.99. PRC 15-Degree 220cc As-Cast Cathedral Heads ... PRC As-Cast 225cc LS1/LS2 Cathedral Heads - Big Chamber $ 2,203.19. PRC LS3 Aftermarket 6-Bolt 260cc CNC Cylinder Heads $ 2,709.99. PRC LS7x 265cc CNC Heads $ 3,935.99.GM 4.8 / 5.3 Cylinder Head PAIR Casting # 706 Chevy Silverado Suburban Yukon V8 OHV LR4 / LM7 / L59 / LM4 GMC 1999 - 2007 ... - All parts are cleaned and inspected before final assembly to meet AERA specifications. NO UPFRONT CORE CHARGE CORE RETURN REQUIRED WITHIN 21 DAYS OF DELIVERY ... GM 4.8 5.3 OHV Cylinder Head Casting # 706 LS V8 Chevy ...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 ...Dyno testing on an LM7 5.3-liter has shown that the 706 heads were worth 20 hp and 15 lb-ft over a pair of 317 heads, even with the 317's slightly larger valves.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.)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 ...Ford cars come in all shapes and price ranges. See pictures and learn about the specs, features and history of Ford car models. Advertisement Ford models come in all shapes and pri...Service B6 of Mercedes vehicles involves the replacement of the air filter and spark plugs. These replacements ensure that your engine breathes better and fires efficiently, both crucial for effective performance. Here’s a breakdown of the procedures involved: 1. Air Filter Replacement.This is a Rebuilt OE Stock LS 4.8L , 5.3L Cylinder Head Assembly. * Description : Stock LS Series 4.8L / 5.3L Cylinder Head. Compatible with LR4 / LM7 / LM4 Engines. Remanufacturing Process Includes: - New valve stem seals installed on all our heads & all valve guides are replaced with new ones as necessary.The factory-built motor dished out about 430 horsepower right out of the gate, and the cylinder heads play no small role in that impressive output. The LS3 heads hit the flow bench. The LS3’s 319-T5 aluminum alloy cylinder heads use 2.165 in (55.0 mm) intake valves, 1.59 in (40 mm) exhaust valves, and a 15 degree valve angle.According to the trusty flow bench, the chamber work did indeed improve the flow rate of our 706 heads, with the largest gains coming at 0.200 lift for the intake and 0.400 lift for the exhaust ...The 6.2-liter LS3 engine offers outstanding performance in factory form, with 430 horsepower available at 5,900 rpm and 424 lb-ft of torque present at 4,600 rpm. A long view of the Pro1 LS3; Dart has engineered these to use both stock valve dimensions and stock valvetrain components. They will also accept aftermarket replacements.Manley's valve head and under head shapes have been in the forefront of the quest for improved flow since the late 1960's. Show More. ... Manley Race Master Race Flo Intake Valve LS1 / LS2 / LS6 - Hollow Stem Design. Manley 11360H-1 Part Number: 660-11360H-1. Manley 11360H-1get those projects done! should you run 706 heads on your 6.0l for more torque? what about the change in compression and detonation? what if i have to retard...Thank you Headflowinc for pointing out the correct Mahle head gaskets I needed for this build. I could have used the others I bought but I fear the larger fi...The final test was the 246 cam, with .624 lift, a 246/254 degree duration and 114 degree LSA, but with less-than-stellar results. The peak horsepower numbers remained at 626 hp, but peak torque dropped to 575 lb.-ft. In fact, torque production dropped through the entire rev range! Sometimes, even on a stroker, bigger is not always better!FULL RESULTS-FACTORY LS HEAD SHOOTOUT, 6.0L WHO WINS? Check out this comparison between the 706, 799, LY6 and TFS 225 heads on a cammed 6.0L? What is the bes...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.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.The GX 470 is shorter and narrower, with a length of 187.4 inches and a width of 72.8 inches. The LX 470 is also slightly heavier, with a curb weight of 5,635 pounds, while the GX 470 weighs in at 5,455 pounds. 2. Interior and Features. The interior of the Lexus LX 470 is a perfect reflection of the vehicle's exterior design, with sleek lines ...Feb 13, 2020 · 706/852/862—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...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.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 ...A pair of Chevrolet LS 706 cylinder heads With complete valve job. We also work on all types of cylinder heads. Our shop is devoted to rebuilding any cylinder head, resurfacing. Garland, TX. Location is approximate. Message. Auto Parts. See all. $5,500. 1965 Ford Mustang. Oswego, KS. $1,700. 69 C10 Chevy project. Columbus, KS. $950 $1,500.Yamalube is a line of regular and synthetic two-stroke engine oils manufactured by the Yamaha Motor Corp. It comes in a variety of types, each tailored for specific two-stroke engi...The LY6 engine is a 6.0L Gen. 4 small block engine used in GM trucks and SUVs between 2007 and 2010. For marketing purposes, it was also known as the Vortec 6000. The engine specs and information listed here is for a stock LY6 engine. Mechanically similar, General Motors' LS and LS-based Vortec engines wound up on almost every branch of the ...Run in this trim on the dyno, the little 4.8L produced peak numbers of 409 hp at 6,600 rpm and 367 ft.-lbs. of torque. Now it was time for boost! Boost was supplied by the S475 turbo from Summit Racing. The twin-scroll, T6 turbo featured a 75-mm compressor (inducer) and an 88-mm turbine (exducer).500 HP 5.3L LS Cylinder Heads & Valvetrain . To help make power, the SP 5.3L also featured a set of ported 706 heads. ... summit 8707 cam, 1 7/8 longtube headers, tbss with 92mm tb, rebuilt 706 heads stock specs. But it only made around 380whp and 390wtq.. feels like it has no low end torque till about 4500… Even in a 2800lbs car with 3.73 ...Overview About 823 LS Heads. Once you need to supply decent power to your sports car with an LS engine and push its performance to a new height, the 823 LS heads – also known as the L92 heads – are an ideal option. This model was first introduced in 2008, and it is set up in the Corvette C6, which belongs to the LS3 of the General Motors ...ARP head bolts for early Gen III heads. ARP-134-3609. Summit Racing. Fel-Pro head bolts, first generation. FEL-ES72173. Summit Racing. Chevrolet Performance LS6 valvespring kit. NAL-12499224 ...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! All ...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 ...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 ...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 …CYLINDER HEAD SPECS. Bolts on to any 289/302/351w, 351C, and LS Chevrolet engines, 4.00" bore or bigger. . Accepts any existing Windsor style intake manifold . LS engines will require a Hogan Sheet Metal, Billet, or modified cast intake manifold. Comes with 2.200"/1.650" Competition Stainless Steel valves.Fits. The price listed is for you sending your cathedral port cylinder heads (4.8/5.3, LS1, LS6, LS2, LQ4/9) to us for porting. Our stage 1 porting service will include the re-use of the stock vales. Stage 2.5 will include aftermarket 2.02/1.57 stainless steel valves. We also offer valve spring upgrades. PRC CNC Porting/Machining Service Includes: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.These particular heads are 862 castings, replacing my 706 heads on my LM7.Yamalube is a line of regular and synthetic two-stroke engine oils manufactured by the Yamaha Motor Corp. It comes in a variety of types, each tailored for specific two-stroke engi...706 Heads Specs. High-performance cylinder heads like the Chevy 706 LS Heads provide a ton of power at an unbelievable cost. They are the most cost-efficient and efficient remanufactured cylinder heads available, and they may be used to produce 4.8L, 5.3L, or even 6.0L LS engines. Their tiny cross-section reveals a high-velocity, smaller-volume ...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...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 family tree: Chevy, Pontiac ...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 ...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 cam sensor ...For the sake of mass production, the production Gen III V-8 cylinder heads were designed to fit the smallest-bore Gen III V-8 engines--the 4.8L and 5.3L, 3.780-inch-diameter cylinder bore SUV and ...May 17, 2018 · The LM4 is a 5.3L, Gen. 3 small block engine used in GM trucks between 2003 and 2005. It’s is very similar to the LM7, except that it’s built on an aluminum block, and the LM7 is an iron-block engine. For marketing purposes, the LM4—like the LM7—was also known as the Vortec 5300.The answer of whether 706 heads are better than 243 heads may depend largely on how you plan to use them and what engine you are putting them on. What Are …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.Specs: 2002 LQ4 bored out 20 thou to 4.02 ... old school SBC and SBF static and dynamic compression ratios do not apply to LS heads. If this is a street driver and expect to be sub 500hp, then a set of 706 heads will be better yet - yes - 706 small valve truck heads. ... The 706 heads have a 61.15cc combustion chamber whereas the 243's have a ...Back in the early LS1 days, the 706 head was the best bang for the buck. When 706's are ported correctly with new larger 2.00 or 2.02 intake valves, 1.6 exhaust valves and good valve job, good springs, they are almost as good as ported LS6/243/799 cylinder heads. The 5.3/4.8 706 head was the go to choice before 243/799 castings became more ...These heads can be CNC ported to remove the vane and improve airflow. RPO LS7 cylinder heads are 356-T6 aluminum with 70cc CNC ported combustion chambers, raised square port, CNC ported intake ports with 259cc runners, D-port, CNC ported exhaust with 86cc runners, 2.205˝ intake valves and 1.610˝ exhaust valves.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.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.Casting number 862 or 706 heads were used and sported a 61cc chamber but had tiny 1.890 intake valves. The stock heads can be CNC-ported for more airflow and milled up to .030 inch for more compression. Flow numbers can be as high as 325 cfm at .600-inch lift. ... The Definitive Guide to LS Engine Specs and LS Engine Upgrades. …Jun 2011. Location. Clarksville, TN. Posts. 198. 862 heads for a 4.8L ? Got lucky at a local junkyard and snagged, The LS3 contains a 103.25 mm cylinder bore size, while the , Ford cars come in all shapes and price ranges. See pictures and learn about the specs, features and history , The 3.89-inch bore LS1 and LS6 engines can only us, 373/873 LQ4 iron heads - 71.06cc. 706/852/862 '99-up 4.8L-5.3L tr, This also means that they are usually cheap to collect or replace. 706 heads t, Feb 18, 2024 · This also means that they are usually cheap to collect or repl, Our fellow tech writer and dyno-flogger Richard Holdener re, We have a few options you can purchase such as a pair of Stage, Sep 28, 2015 · Despite numerous differences the Gen III LS Engin, 706 head casting numbers 706 head casting numbers. By Minnes, BARE GM LS 243 HEAD - 4.8L, 5.3L & 6.0L. Generation III V8 cathe, Cylinder Heads / DSP CNC Ported GM 862 / 706 Casting. CNC ported GM , 317 Heads Specifications. 317 6.0L Truck Castings; Valve , After installation of the TrackMax cam, the power output of the 6.0L L, February 25, 2024 by Ugo Anums. The C and H in your c, Mar 29, 2017 · The factory-built motor dished out about 43, Casting # 706,862. 71cc chamber; .3154 guide ID. Valve head .