Ls 706 head specs

193. Oliver BG 75 56 70 70 60 Sheppard SD-2 SD-3 150 90 150. These values are in ft-lbs for new fasteners with clean threads. Old or damaged fasteners or worn threads may not with stand the recommended torque. Be sure to torque in an even sequence starting at the center and working outward. The information is from a 1951 tractor service guide.

With the smallest displacement of all the engines in the LS lineage, the 4.8L is probably the closest you’ll get to an “under-the-radar” LS. But that’s good news for you, because they’re often easy to come by in junkyards and relatively cheap. Yet thanks to an iron block, the 4.8L LS can support big horsepower, particularly if you ...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.The GMPP LSX cylinder head is a six bolt head that can be used on C6 ZO6 Corvette LS7 blocks or the GMPP LSX cast iron block. Flow number and performance will be the same as the LS7 CNC ported cylinder heads that we use in our 630 horsepower & 660 horsepower C6 ZO6 Corvette engine packages. LPE CNC Ported LS7 Flow Specs Intake 400 Cfm, The port ...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 ...[Editor’s Note: This LY2 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 the 4.8L LY2 …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.The result of a point of compression adds 1.5 to 2.0 percent, or about 10 hp, automatically to the AFR 245 heads. To make this a fair fight, we gave the two factory heads the same percentage and ...If you find that you’ll need to replace your Chevy 350 cylinder head due to any number of reasons, Allied Motor Parts has just the cylinder head for you. Their heavy Chevy 350 5.7L V8 SBC cylinder head is a high-quality cylinder head replacer for your vehicle, with the part being compatible with most 5.7L Chevy 350 block engines.

Do the match on that 4.8L motor and it equals 1.46 hp/ci. The big difference between a set of 5.3L (852 or 706) heads and 5.7L LS1 (853) heads is the chamber size and the intake-valve diameter. The 5.3L truck heads use a 1.89-inch intake valve, while the 5.7L heads found on car engines enjoy a 2.00-inch intake valve.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 ...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.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...If the 706s are useable as-is, just run those. Then when you add the turbo, bolt on the 317s. Also consider the SUM-8728R1 cam 212/218 110+3 .600/.585. Similar specs to the BTR Truck Stage 2, but the additional valve lift will complement boost.

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 ...Find CHEVROLET 5.3L/325 ARP Cylinder Head Fasteners and get Free Shipping on Orders Over $109 at Summit Racing! Save Up to 10% on Select Holley Family of Brands Products ... Cylinder Head Fasteners, Dart LS Next,12-point Head Style, Stud, Black Oxide, Kit. Part Number: ARP-234-4341. 4.33 out of 5 stars. Estimated Ship Date: Tuesday 5/28/2024.Casting Number 706 Head: 1999+ LR4 4.8 Litre Truck 1999+ LM4 /LM7 5.3 Litre Truck Material: Aluminimum Part Number: 12559852 12561706 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 852 heads 61.15cc Chamber VolumeToday 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 ...If you’re in the market for a compact SUV that offers style, versatility, and advanced features, look no further than the Hyundai Kona. This popular vehicle has been turning heads ...

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In this video - Erik shows you some simple porting and polishing techniques for LS aluminum cylinder heads! Time stamps and part numbers/links below!!GODSPE...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 ...On our Mast heads, the LS3 head offered both more intake and exhaust flow than the cathedral-port heads, resulting in an intake-to-exhaust flow percentage (372/261 cfm) of 69.89 (meaning the ...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 ...

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, […]No 243s or 799 have the casting defect that I've heard, it was pretty isolated to the castech only 706's on gen III 4.8/5.3's. There are 2 other sets of 706's that are not affected. The early sand cast heads come as 862s and 706's, and a die cast 706 that isn't made by castech. 16 posts.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 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 ...Apr 6, 2020 ... Comments47 · Porting cylinder heads to optimize engine performance | Hagerty DIY · Porting LS heads Math and tools step by step DIY · LET'S...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...Key Specifications. The tractor is powered by various International Harvester engines, including a 4.6L 6-cylinder diesel and a 4.3L 6-cylinder gasoline engine. It offers 8-speed and 16-speed transmission types and has a weight range of 7530 to 9160 pounds.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 LS1 heads can help you attain better performance and fuel economy at a low price. LS1 is one of the engine variants that is known for its horsepower and torque. The LS1 heads can help you attain better performance and fuel economy at a low price. ... Chevy Cylinder Head LS 5.3L V8 706/862 Aluminum - Pair, Year:99-06 . David Perry. Great ...

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 ...Installation instructions for Scorpion LS1 - LS6 & Vortec V-8 Rocker Arms: The first step is to make sure the pushrods are still in the middle of the lifters by spinning them while lightly pressing down. (If using 1.8 ratio rockers, you must check the pushrod clearance on the cylinder head.) Next, you must lube the top of the pushrods with ...Manufacturer: Chevrolet. Year Range: 97-04. Engine Size: 5.7L - 350ci - V8. Description: Cylinder Head 97-04 Chevy LS1/LS6 243/799 - PAIR. Upgrade your Chevy LS1 or LS6 engine with this pair of remanufactured Cylinder Heads designed to exceed OEM specifications. These Cylinder Heads are specifically crafted for the 97-04 Chevy models with a 5 ...The 799 head flow supersedes that of 706 heads with as much as about 20 cfm at specific lift points. The cylinder heads' intake port and exhaust port shapes are cathedral and D-port, respectively. The cylinder heads come with a smaller combustion chamber, which in turn engenders increased compression and improved horsepower.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.Jun 28, 2018 ... THE ULTIMATE STOCK LS CYLINDER HEAD TEST! ... Porting LS 862/706 how much do they flow? ... WHICH IS BETTER-CNC PORTED STOCK LS HEADS OR AFTER ...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 241 heads were used on 5.7L LS1 applications and are considered by many to be just a minor step up in performance from the 706. In terms of peak flow, the 241 heads offered 242 cfm at 0.700 ...

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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 ...This program works on the following head casting numbers: 821. 823. 716. 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.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 . 12561706Today I installed and torqued down my LS1 cinder heads for my ls swapped is300 projectChevrolet Orange Engine Painthttps://amzn.to/3hIh21DICT Billet Exhaust ...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 …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 ...The L9H is a 6.2L, Gen. 4, small block engine used in GM luxury trucks and SUVs between 2009 and 2013. For marketing purposes, it was also known as the Vortec 6200. The information listed here is for a stock L9H engine. Mechanically similar, General Motors' LS and LS-based Vortec engines wound up on almost every branch of the GM family tree ...Find CHEVROLET 5.3L/325 ARP Cylinder Head Fasteners and get Free Shipping on Orders Over $109 at Summit Racing! Save Up to 10% on Select Holley Family of Brands Products ... Cylinder Head Fasteners, Dart LS Next,12-point Head Style, Stud, Black Oxide, Kit. Part Number: ARP-234-4341. 4.33 out of 5 stars. Estimated Ship Date: Tuesday 5/28/2024.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.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 .Object moved to here. ….

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 ...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 ...933: Found on 1997 LS1 engines up to mid-September. Although 862 and 706 heads share many similarities, the primary difference is that the 706 heads are made using SPM (semi-permanent mold) while the 862 heads are not. This makes the 706 heads slightly superior. Cylinder Head.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 ...Today I installed and torqued down my LS1 cinder heads for my ls swapped is300 projectChevrolet Orange Engine Painthttps://amzn.to/3hIh21DICT Billet Exhaust ...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 ...But as for the 5.3/4.8 heads, they used the same cylinder heads, identical. The only difference from the 706 and the 862 heads, are the way they are made. The 862 heads are sand cast, and the 706s are SPM (Semi permanent molded), but with just a bit of machine work, the difference between the two is null.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 …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.933: Found on 1997 LS1 engines up to mid-September. Although 862 and 706 heads share many similarities, the primary difference is that the 706 heads are made using SPM (semi-permanent mold) while the 862 heads are not. This makes the 706 heads slightly superior. Cylinder Head. Ls 706 head specs, 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..., Stock 04 (LS1) heads are the 241 castings with 67cc chambers. LS6 heads are 243 castings with 64cc cambers and larger ports. LS2 are 243 casting as well with 71cc chambers and the larger ports. the 5.3L truck heads are 706 and 862 casting and 61cc chambers. pretty sure about the LS2 info but could use verification., LS COMBO DOME - compatible with LS1/2/6 style cathedral port heads & LS3 / L92 style rectangular port heads (Does not fit LS7 or 5.3L 706 & 862 Truck Heads) 1.0, 1.0, 2.0mm File Fit Performance Ring Set Included 65cc 66cc 70cc 402 4.000 4.000 6.125 1.110R 0.927 9.2cc 454 13.9 13.7 12.9 2618 0.500 0.0044 0.0054 930229600, 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.", 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 Valve Diameter ..., The LS3 is a Gen. 4, 6.2L small block engine used in GM performance cars between 2009 and 2017. The engine specs and information listed here is for a stock LS3 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 ..., 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 …, 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 ..., 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..., Aug 29, 2022 · 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., By CNC porting the cylinder heads the high cost of hand porting is reduced, plus the CNC porting is more consistent and will produce better results. ... LPE CNC L92 LS3 Flow Specs Intake valve lift / Exhaust valve lift .200 - 158 cfm / .200 - 116 cfm .300 - 230 cfm / .300 - 161 cfm ... Lingenfelter GT11 LS Series Camshaft 371/215 379 231 R118., 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 ..., LS 706 Head Specs [Features & Comparison with Other Cylinder Heads] 706 heads, also known as "706 cylinder heads," are a specific type of cylinder heads commonly used in engines produced by General Motors (GM), specifically in their LS series. These cylinder heads are quite popular among engine enthusiasts due to their compatibility and ..., 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., 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 ..., Avoiding 706 castech heads. Hey guys, I just joined this forum because I am looking to buy a silverado/sierra soon but still have a couple questions. Right now I'v got a 2004 5.3 tahoe with leaking castech 706 heads. Iv decided to trade it and and I'm trying to avoid having the same problem again with my new truck., The 799 head flow supersedes that of 706 heads with as much as about 20 cfm at specific lift points. The cylinder heads’ intake port and exhaust port shapes are cathedral and D-port, respectively. The cylinder heads come with a smaller combustion chamber, which in turn engenders increased compression and improved horsepower., 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 ..., 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., Head Bolt Kit: 234-3726: Chevrolet LS Gen III LS Series small block (2004 & later - except LS9) w/ all same length bolts, ARP2000, 12pt: Head Bolt Kit: 234-3725: Chevrolet LS Gen III LS Series small block (2003 & earlier), two lengths, ARP2000, 12pt: Head Bolt Kit: 234-3724: Chevrolet LSA, Inconel, 12pt:, Upgrade your LS1 or LS6 engine with our Remanufactured CNC Ported 243/799 Cylinder Heads with .650 Springs and 2.02/1.59 Valves. These high-performance heads, designed by Chevrolet, are meticulously remanufactured to exceed OEM specifications, ensuring top-notch quality. These CNC Ported LS heads, part number ALL-65056PC, fit engines within the ..., Spring specs are 155 lbs @ 1.780", 380 lbs @ 1.180", 400 lbs @ 1.130, coil bind @ 1.070" This is a drop in spring kit for all 15 degree LS heads including LS1 LS2 LS3 LS4 LS6 L76 L92 L99 LQ4 LQ9 L33 LSA. ... Designed to be used with stock rocker arms. Drop-in kit for 15° LS heads. It will also work with LS7 heads when used with a .045" washer ..., 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 12561706, 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 ..., 741 posts · Joined 2004. #11 · Jul 12, 2022. If you want to make power with a 5.3, you need compression or boost. The 799/243 head is great for flow, but given that your engine originally came with 706 heads, it likely has dished pistons. The 799/243 will kill what little compression you have now unless you mill them., The minimum recommended clearance is 0.035-inch, so you should be able to deck most blocks 0.010-inch without a problem, but be sure to check the piston protrusion before you install the heads. If ..., In this video I buy a set of 40 dollar LS 706 cylinder heads from Facebook marketplace. I clean them up and lap the valves to restore the valve seats that we..., Just used for tear down and re assemble. They had it listed as a Zo6 motor and it has a dry sump oiling system on it. The heads on it have a casting number of 339k and a second set of heads say 706 on it. The block says that it is a 5.7, not sure if a z06 ever came with that. Attached are a couple of pictures of the heads., 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 …, Here are my specs; LS7 heads with stage 2 porting and milling by WCCH, OEM rockers, OEM Ti intake valve (78 grams) Ferrea hollow stem exhaust valve (90 grams), custom cam with comp LXL lobes 222/246 .638 .652 116+1, 13.3:1 SCR, rev limiter at 7300 rpm. The LXL lobes are designed for a 1.8 rocker with a softer seat landing is the reason I chose ..., [Editor's Note: This LS6 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. The LS6 is a Gen III, 5.7L aluminum-block V8 that first appeared in the 2001 Chevrolet Corvette Z06. It is dimensionally identical to the LS1 but does feature noteworthy differences to consider if you're ..., Check the coolant and make sure it looks good. If you find a truck with a radiator full of stop leak the engine may have blown head gaskets or other damage, so walk away from that one. Here is the casting number 10239906, which is one of the two casting numbers that GM used on Vortec cylinder heads., 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 ...