862 ls heads.

Mar 8, 2018 · [Trying to find an LS or LS-based Vortec engine for a swap or build? Check out Part 1 and Part 2 of our LS Spotter’s Guide.] … Upgrading LM7 Cylinder Heads. The stock heads can be CNC ported for more airflow and milled up to .030 in. for more compression. Flow numbers can be as high as 325 cfm at .600 lift. LQ4 862 heads and truck cam tuning. Hello, my cousin recently rebuilt his 03 Silverado engine and swapped heads from 317?s to 862?s and also put in a small cam (Stage 1 SUM-8718 Pro LS Drop-in Truck Swap Cam, Maximum Torque for Towing and Efficiency, 205/217 112+2, .500 /.500 Lift, 3-bolt, 4.8, 5.3, 6.0, 6.2).706/862 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 …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 …

If you are looking for a LS-series engine to build, the Vortec-series 5.3L is arguably the best choice for the dollar. ... The 862/706 heads have smaller combustion chambers than the Gen IV ...

Remembering the details of events seems easy enough. You’d think that when important things happen, we’d just think about them enough and the memory would sink in. Unfortunately, w...18 posts · Joined 2016. #2 · Dec 2, 2016. The compression depends upon how much you plan to mill. The rule of thumb is 1cc per every .006" milled. So, if you mill .030", then you will have shaved 5cc off the combustion chamber. I'm running .030" milled LS3s on a 404 stroker. The factory LS3 chamber is 69.8cc.

Are you looking for a rental property near you? Finding the right place can be a daunting task, but with the right resources and information, you can get a head start on your searc...To get the best bang for your buck gen 3 lq4 + 862 Heads will give you a 10.5:1 compression ratio with smaller combustion chamber with a more responsive per...The LS3 was run with a Holley HP management system and FAST injectors. With stock heads, the modified LS3 combination produced 552 hp at 6,400 rpm and 513 ft-lbs of torque at 5,000 rpm. After installation of the TFS Gen X 255 heads, the power numbers jumped to 571 hp at 6,500 rpm and 525 ft-lbs of torque at 5,200 rpm.706/862 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 …Cast #: 706, 862. GM 4.8 5.3 V8 C#706, 862 Assembled Cylinder Head. $499.99 Price. Quantity. Add to Cart. Chevrolet GMC Cylinder Heads. This Chevy GMC Head is a new and improved casting; ... Our NEW Cylinder Heads are HIGH QUALITY and are superior to any rebuilt or remanufactured cylinder heads.

In this story, we will dyno test three new LS cylinder heads and perform a camshaft swap on a 6-liter naturally aspirated LS Gen III (an LY6 truck engine).

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Cometic MLS Head Gasket FOR Honda LS/VTEC B20/VTEC 84mm Bore .030" C4193-030 Brand New : Cometic Gasket (11) 11 product ratings - Cometic MLS Head Gasket FOR Honda LS/VTEC B20/VTEC 84mm Bore .030" C4193-0301231 posts · Joined 2007. #1 · May 12, 2013. Have a stock bottom and 5.3. The heads on it right now are 862's. I'm approaching 20psi on the engine. Would it be worth it to switch to some ported and milled .025 317 heads? Running pump gas/c16 mixed. 1980 Chevy luv truck. Stock 6.0.Dec 4, 2013 · 4135 posts · Joined 2010. #3 · Dec 4, 2013. I know you are on a budget, but once you clean, do a valve job and mill those 243s, you will have some cash in them. You could sell them for $400 or so, get a set of Stage 1 LS6 CNC ported heads for around $1200. I just think that is fantastic bang for the buck. Power to be had with these LS heads and cam swaps. I vote for porting the 706 heads and using them with the stock size valves and save the extra coin for a cam upgrade. ... Casting Number 706 and 862 Head: 1999+ 4.8L / 5.3 Liter Truck Material: Aluminimum Part Number: 12559862 12561706 Combustion Chamber Volume: 61.15ccAbout Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright ...227cc SBC LT4 Race Cylinder Head. AFR's 227cc "Race Ready" and "Competition" LT4 heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. This head features 60/40 valve spacing and requires shaft mount rocker arms for optimum valve train geometry (can be used with .050 offset ...The LS3 was run with a Holley HP management system and FAST injectors. With stock heads, the modified LS3 combination produced 552 hp at 6,400 rpm and 513 ft-lbs of torque at 5,000 rpm. After installation of the TFS Gen X 255 heads, the power numbers jumped to 571 hp at 6,500 rpm and 525 ft-lbs of torque at 5,200 rpm.

To get the best bang for your buck gen 3 lq4 + 862 Heads will give you a 10.5:1 compression ratio with smaller combustion chamber with a more responsive per...Apr 15, 2022 · The LS engines with 799 heads are 5.3L and 4.8L. The sophisticated architecture, cathedral-shaped port, and smaller combustion chamber work amazingly on these truck engines. The smaller combustion chamber with a higher compression ratio offers increased power output. The 799 LS heads boost horsepower up to 25 hp. Justin Cesler Writer Feb 28, 2013. Porting cylinder heads has long been a right of passage for serious hot rodders looking to add power on a modest budget. Armed with the right knowledge, the ...18 posts · Joined 2016. #2 · Dec 2, 2016. The compression depends upon how much you plan to mill. The rule of thumb is 1cc per every .006" milled. So, if you mill .030", then you will have shaved 5cc off the combustion chamber. I'm running .030" milled LS3s on a 404 stroker. The factory LS3 chamber is 69.8cc.We have a few options you can purchase such as a pair of Stage 1, Stage 2, Stage 3, or Stage 4 LS 243/799 Cathedral casting 5 axis CNC Porting with stainless valves and WP .660 dual race springs with WP titanium retainers. These heads have been disassembled, inspected, cleaned, 5 angle valve job, and milled slightly to clean up the heads.

These particular heads are 862 castings, replacing my 706 heads on my LM7.

the 862's are off the early 4.8-5.3 motors after about 99 I believe. I also believe texas speed used to have the 2.05 valve opton on those heads at one time. I run 2.04 valves on mine. 12-30-2010, 08:54 AM #7. 1badmonza. GM 4.8 5.3 V8 C#706, 862 Assembled Cylinder Head. $499.99. Quantity. Add to Cart. This Chevy GMC Head is a new and improved casting. The cylinder head is either sold complete with all new parts or bare. This is OEM replacement quality at a fraction of the cost. This Cylinder Head has an industry leading 2-year Warranty. GM 4.8 5.3 V8 C#706, 862 Assembled Cylinder Head. $499.99. Quantity. Add to Cart. This Chevy GMC Head is a new and improved casting. The cylinder head is either sold complete with all new parts or bare. This is OEM replacement quality at a fraction of the cost. This Cylinder Head has an industry leading 2-year Warranty. 862 heads for a 4.8L ? Got lucky at a local junkyard and snagged a set of 862 heads off a wrecked z71 2000-2006 body style. thinking about building these (port n polish, roller rockers, valves n springs to go with a nice cam) to put on my 06 gmc 4.8L . Am I correct in assuming these fit my motor? LET'S TALK TECH, ANYONE EVER SEE A SET OF STOCK 243 HEADS FLOW 270+ CFM? WE COMPARED 243 HEADS TO 862 HEADS, PORTED, CHAMBER WORK & BIG VALVE. 4135 posts · Joined 2010. #3 · Dec 4, 2013. I know you are on a budget, but once you clean, do a valve job and mill those 243s, you will have some cash in them. You could sell them for $400 or so, get a set of Stage 1 LS6 CNC ported heads for around $1200. I just think that is fantastic bang for the buck.LS1 with 862 heads. I may have found an LS1 shortblock I can drop in my truck but I want to know if I can use the 862 heads from my 4.8 on the LS1. Also, what will the CR be if I use the 862's on the LS1. Thanks in advance. It will bump your CR up a hair, 4.8/5.3 heads and LS1 heads flow the same, the only difference is the combustion chamber.

In terms of cylinder heads, we included the 706 small-valve 5.3L heads, the 241 (LS1), 317 (6.0L truck), and 799 (as a stand-in for the hallowed 243) heads. The idea was to flow and measure each ...

The LS engine remains the darling of the performance world, but does that mean all LS owners are looking for the same thing when it comes time for upgrades? ... 862 heads and composite truck ...

So nothing urgent at this time. mad1500hd. 363 posts · Joined 2010. #4 · Jan 5, 2012. i don't know if mine falls into this category...i have the 6.0 motor and just recently found a hairline crack on the passenger side head and was losing coolant...good thing it was under warranty...only cost me $75...so it could've been worse. Mike - SoCal.The intake manifold is the most important element in swapping from a cathedral to a rectangular port head. To match the runners, this factory LS3 (PN 12610434) or an L76 manifold are the most popular. It is important to note that there are some minor differences between the L76 and LS3 intakes, such as a screw-in MAP sensor instead of the Gen ... GM 4.8 5.3 V8 C#706, 862 Assembled Cylinder Head. $499.99. Quantity. Add to Cart. This Chevy GMC Head is a new and improved casting. The cylinder head is either sold complete with all new parts or bare. This is OEM replacement quality at a fraction of the cost. This Cylinder Head has an industry leading 2-year Warranty. French fuel workers entered a 15th day of strike action on Wednesday, leaving more than a quarter of gas stations without at least one type of fuel. Americans heading to France thi...Heads-up displays (transparent displays that let drivers see data without looking down) are built-in on some modern luxury cars, but if you're not lucky enough to have one, here's ...[Trying to find an LS engine for a swap or build? Check out Part 1 and Part 2 of our LS Spotter’s Guide.] … Upgrading LR4 Cylinder Heads. 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 …GM Chevy 5.3 4.8 6.0 #862 Vortec LS Cylinder head Truck SUV GEN 3 OEM (NO CORE) Opens in a new window or tab. Remanufactured. $274.99. jerry194 (2,770) 98.7%. or Best Offer +$94.10 shipping. Chevy 4.8 / 5.3 Silverado GMC Sierra GM Vortec Cylinder Heads PAIR # 862 99-08. Opens in a new window or tab.Mar 8, 2018 · [Trying to find an LS or LS-based Vortec engine for a swap or build? Check out Part 1 and Part 2 of our LS Spotter’s Guide.] … Upgrading LM7 Cylinder Heads. The stock heads can be CNC ported for more airflow and milled up to .030 in. for more compression. Flow numbers can be as high as 325 cfm at .600 lift. 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 …Feb 14, 2019 · [Trying to find an LS engine for a swap or build? Check out Part 1 and Part 2 of our LS Spotter’s Guide.] … Upgrading LR4 Cylinder Heads. 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. Get some merch and support the build and the channel. https://shanewhalleyracing.com/collectionsFollow me on social mediaFacebook: https://www.facebook.com/p...

Oct 24, 2023 · The 243 heads have a D-shaped exhaust and cathedral-shaped intake ports. The cylinder heads combustion chamber is smaller than the earlier cylinder heads fitted on LS1 engines. 243 is also more efficient than the earlier heads found on LS1. What do stock 243 heads flow? The GM stock 243 heads are designed to boost flow by up to 32.2 cfm and 28. ... Jan 6, 2024 · The 862 heads came on all LQ9 6.0 engine blocks and are completely interchangeable with the 243 cylinder head. Both the 243 and 862 heads have the same 64cc combustion chamber, but there are some very slight differences in the pore size of the two heads. The 862 head is a rectangle port, while the 243 is a square port. 6.0 Ls Swap S10 with slightly home ported exhaust port 862 heads off of my 5.3. BTR Ls1 Stage 3 cam, single plane intake. Holley Terminator on a base tune, n...Instagram:https://instagram. dmv santa clara routes for driving testnorcal furniturejerr dan serial number lookuphobe sound dmv appointment [Trying to find an LS engine for a swap or build? Check out Part 1 and Part 2 of our LS Spotter’s Guide.] … Upgrading LR4 Cylinder Heads. 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. debitum llcstorm team 4 meteorologists 715 posts · Joined 2008. #5 · Sep 23, 2012. Holdener did some 5.3 testing with the TFS 205 heads which have 2.00"/1.55" valves and almost a 3.900" bore chamber. Versus the TFS 215's with 2.04"/1.575" valves and a 3.950" bore chamber, and the 215's made more power. The 205's made 500 hp leaning on the engine and the 215's made 510 hp fairly easy. ecobee 2 wire installation Mar 8, 2018 · [Trying to find an LS or LS-based Vortec engine for a swap or build? Check out Part 1 and Part 2 of our LS Spotter’s Guide.] … Upgrading LM7 Cylinder Heads. The stock heads can be CNC ported for more airflow and milled up to .030 in. for more compression. Flow numbers can be as high as 325 cfm at .600 lift. So nothing urgent at this time. mad1500hd. 363 posts · Joined 2010. #4 · Jan 5, 2012. i don't know if mine falls into this category...i have the 6.0 motor and just recently found a hairline crack on the passenger side head and was losing coolant...good thing it was under warranty...only cost me $75...so it could've been worse. Mike - SoCal.