862 vs 243 heads
Dec 1, 2010 · The 241 castings feature 205cc intake ports, 70cc exhaust ports, and a 2.0/1.55 valve combination. The hot factory heads would be the LS6 (243 castings), but even the stock LS1 heads can be made ...If you are fan of Total Engine Airflow promote us by clicking on these buttons Tweet. Total Engine Airflow specializes in CNC-PORTED cylinder heads, custom cylinder head assemblies, and support components for GM, Ford, Mopar and many other makes for street/strip, competition, and racing applications. FEATURED PRODUCTS.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 ...
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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.This program works on the following head casting numbers: 243. 799. 317. 035. 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.It happens to even the best DIYer: the simple process of removing a screw becomes a struggle when the screw refuses to budge and the head of the screw becomes stripped. But not all...
The 243's have bigger valves which do better on 4.0" and larger bores. On the smaller 3.898/3.78" bores of the LS1/6 & all 5.3/4.8's the 706 are very decent. On a 4.00" bore of an LQ4 though it is splitting hairs. On the same cam, on the same engine, the heads are going to perform within +/- 5hp/5tq of each other, it is almost meaningless.I am beginning to find and spec all the parts I need to start the 6.0L LS swap for my 2002 Silverado. A significant key to the success of this build is the c...Casting Number 706 and 862 Head: 1999+ 4.8L / 5.3 Liter Truck Material: Aluminimum Part Number: 12559862 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 Stock Head Flow Numberswhat i have learned is that running plain 243 unmilled heads 7.4 pushrod is fine. the 243 head with light weight valves requires you to run a shorter pushrod,or if the deck surface is milled. possibly a 7.35 length rod,but im not sure. would have to be measured for proper length. Like.
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 ...Compression Ratio Calculator - Wallace Racing. 3.622" x 4.00" / 6.098 rod length / 9.240 deck ht. / 0.008" out the hole / 0.052 gasket / -6.7 cc dish / 4.000" head gasket bore / and either 71.06cc for 317 or 64.45cc for 243's. Note if you do run 243's on the LQ4, the piston raised ring around the dish has been known to interfere with the ...The 799 and 862 heads have their own pros and cons. While the 799 heads offer better flow and performance, the 862 heads offer better combustion chamber design and improved efficiency. Ultimately, the choice depends on the specific needs and goals of the engine. Pros of Using 862 Heads. Cons of Using 862 Heads. ….
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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 ideal RPM range for a camshaft on a 5.3 with 862 heads depends on various factors such as the intended use of the vehicle, the type of camshaft, the engine components, and the desired performance. Typically, a camshaft with a duration between 212-218 degrees and a lift around .550"-.600" can work well with the 5.3 engine and 862 heads.The valves on LS3 heads are designed to be larger than those on stock LS heads to improve airflow, leading to increased power output. Standard valve sizes for LS3 heads include 2.165 inches (intake) and 1.590 inches (exhaust). However, it's not uncommon for LS3 heads to feature even larger valves. For example, some aftermarket LS3 heads may ...
what i have learned is that running plain 243 unmilled heads 7.4 pushrod is fine. the 243 head with light weight valves requires you to run a shorter pushrod,or if the deck surface is milled. possibly a 7.35 length rod,but im not sure. would have to be measured for proper length. Like.So, I am not sure if that would work and if I should get another 706 or 862 head to make the heads match but I'm trying to do budget build. Thanks SPONSORED LINKS. Tuesday, November 21st, 2023 AT 4:39 AM. 3 Replies. MONSTERTRUCKDADDY MECHANIC; 30 POSTS; Hello HD1200, If the combustion chambers CC are the same, and the spring installed heights ...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...
contra costa county obituaries 243 vs 823 combustion chamber. by quicksilver » Sun Jan 12, 2014 6:33 pm. If you are familiar with the 243 or "LS6" cylinder head, you know that the chamber has a quench pad behind the spark plug thats relatively straight and the combustion chamber size is roughly 64cc's which for the combination I have already built, produced 10.2:1 ...For the price you pay for us to port 241s they will flow the same numbers as a stock 243 head." ... but I just noticed that Ai's 706/862 5.3 heads flow tremendously especially on the exhaust CFM (269CFM at .600). I just don't know how I could really benefit more from such a high exhaust CFM vs. having a higher intake CFM on TSP's 2.5 LS6 ... 6052315982eric stelly obituary lafayette la (Kitco News) - Kitco aficionados, it is now time to have your say in where you think gold prices are heading in the short-term.Read more on 'Kitco' Indices Commodities Currencies S... dr joshua scurlock reviews In the world of automotive engines, the choice of cylinder heads can significantly impact your vehicle's performance. Two popular options that have gained a lot of attention are the 862 and 317 heads. Each has its strengths and weaknesses, and understanding the differences between them is crucial for making an informed decision. …Dec 28, 2011 · Casting Number 706 and 862 Head: 1999+ 4.8L / 5.3 Liter Truck Material: Aluminimum Part Number: 12559862 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 Stock Head Flow Numbers how long does a flum pebble take to chargelansing michigan power outage mapbasic nursing skills quizlet PN: TEA-OEMLS2ST2-CUSTOM. GM Factory LS-2/LS-6 Stage 2 PortingOur most powerful CNC ported factory casting for the LS-1 Engines, the Stage 2. Designed using the same 2.04 and 1.57 valves and valve job technology developed and used in the TrickFlow 215cc head this head has awesome mid-lift airflow. It performs on par with most aftermarket heads. prank calls numbers oil catch can, Pacesetters LT Headers,3500 Stall, K&N CA, bmr drag bags. We can port and valvejob your 243's, install the larger 2.02"/1.57" stainless valves, and the PRC .650" lift dual springs all for $1200. That makes them the equivalent of our PRC Stage 2.5 heads, just with your used castings. Additional milling is free of course.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? omaha steaks apple tartlets instructionswhat does an upside down okay sign mean877 213 6644 64nailhead. 4523 posts · Joined 2012. #5 · Jun 13, 2020. Here's your decision - the 317's will work better if you're looking for boosted 1000+ HP, but the 243's will work better everywhere below that. Something to keep in mind, old school SBC and SBF static and dynamic compression ratios do not apply to LS heads.302 heads on a 360 would lack upper rpm hp and basically become a cork. Too lil port volume/cross section. If they were full ported, then you may have something good . In stock form you are comparring the 360 that flow roughly 215cfm w/1.88 int and 165cc vs 302 heads that flow roughly 170cfm w/1.78 int with 124cc port volume.