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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...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 706/862 Cathedral casting 5 axis CNC Porting with stainless valves and WP .660 dual race springs with WP titanium retainers.Sort by: Add a Comment. J8ke_Stampede. • 1 yr. ago. There's no debate, it's been proven the 862/706 heads will make more power than the 317's. 317's and 241's are the worst factor LS heads. It's also not only because the chamber size and compression ratio either. 862/706 heads have higher velocity and better coefficient of discharge. 8.

It is way too small for an LQ4 IMO. I would do a set of ported 243 heads from either AI, TEA or TSP in that order. For a cam I would look at something like the TSP TQv2 or MS3. My cousin had an LQ4 with patriot ported 243 heads and an MS3 and it drove great behind a T56 with stock 3.42 gears.We find out which factory LS head works best under boost in this back-to-back test of the 706 heads vs. the 317 heads. 398ci LS, TKX, QP 9 inch, Strange pro iron case, strange 35 spline axles, Spc front upper control arms, UMI front lower control arms, Howe ball joints, upper +.5 tall, CPP C5/6 spindles, Ridetech coilovers, C5/6 brakes, C7 x ...check out this video were the guys from brian tooley racing swapped on a set of stock l83 (lt-based) heads onto a gen 4 5.3l ls. check out the power gains offered by the lt heads, custom cam and l86 intake on the ls. also tested an intake upgrade, comparing the l86 intake to the btr long runner trinity! share this; 0;1231 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.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!

Easier to replace a head if more than a few. Yes, it's 2009. I've already discussed it with service guys and they said that it's ok, 823 and 5364 can be installed together even in Arlington on factory because it's absolutely the same. This is an older thread, you may not receive a response, and could be reviving an old thread.www.texas-speed.com ….

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If you know how to look for heads you can buy them cheap if you know what trucks they came on. Go here and look, I have seen them as cheap as $100 a head. www.car-part.com. 2013 inferno orange ZL1 Camaro, basic mods. Pulley, injectors, mild bolt on's- 590rwhp. 11.70@122 with a six speed and a hard tire.The LQ4 is a 6.0L LS (Gen. 3) small block engine used in GM trucks between 1999 and 2007. For marketing purposes, it was also known as the Vortec 6000. The engine specs and information listed here is for the stock LQ4 engine. Mechanically similar, General Motors' LS and LS-based Vortec engines wound up on almost every branch of the GM family ...Simply put, the .243 Winchester became the darling and the .244 Remington became the goat. The reviews took their toll, and the .244 Remington began to wither. In 1963, Remington made their first attempt at the name game. They revised the rifle and ammunition, equipping it with a 1:9″ twist rate in 1958 and renamed the cartridge the 6mm ...

I wonder if the Edelbrock head was an LS1 or a 5.3L specific head. The bore difference of the LS6 to the 5.3 liter motors is 99mm vs 96.01. 3mm diameter is only 1.5mm smaller from the wall to the valve. I know it will shorud but the test showed it worked. The engine ran on an engine dyno and ran well.See All 18 Photos. 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 ...Section 3: Understanding the Difference of 243 Heads. The LS 243 heads are an upgrade over the earlier LS 241 heads. While the 241 heads are also cathedral port heads, the 243 heads offer several improvements. The 243 heads have larger combustion chambers, bigger valves, and improved port designs, allowing for increased airflow and improved ...

van adkisson auction service roseville illinois The 862 heads are an excellent choice for any GM vehicle with an LM7 engine. Although the design is meant for high-performance settings, it performs well in the Avalanche, Express, Silverado, Sierra, Yukon, and other trucks or SUVs from the late 1990s to about 2007. You know if you’ve got an LM7 engine by looking at the eighth digit of the ... hra office in jamaica queenscarshield actors and actresses The 862 heads are pretty good because they can deliver better compression after a porting job. However, the cylinder heads may not flow well compared to 243 heads. Also, 706 heads are considered to be superior to 826 cylinder heads. 826 cylinder heads are not as sophisticated as some of their counterparts. qtmnq The LS1 debuted with 3.89-inch bores, a 3.62-inch stroke, hypereutectic aluminum flat-top pistons, a nodular iron crank, and 6.089-inch powdered metal rods. For the most part, … wa state sales tax king countydelicate dessert wsj crosswordtomi lahren salary 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 ...Nov 18, 2022 · Both of the cylinder heads possess the same valve size. Additionally, they have ports and chamber cores of the same size. The actual difference lies within the compression ratio of the two. 862 heads are cast on sand molds, but 706 cylinder heads are cast on a semi-permanent mold. 862 heads also fit into smaller combustion chambers as compared ... nursing care of children final ati 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 ...biscuit_08 said: I was jw cuz i seen it done on the ls1 and them makin more power with cnc ported heads i was just seein if it would do the same on a 6.0. The key word.. ported. In stock form its a downgrade. People use the 5.3 casting because of the smaller combustion chamber without milling the heads and changing the pushrod length. 3140 manor bridge dr pre foreclosureobituaries journal and courierlittle caesars pay rate 5.3 chevy LS heads 862 to 241 Casting. I recently completed my 5.3 swap in my 90 wrangler, long story short I have a bad valve on cyl #8 low compression. So I was intent on having them rebuilt and called my machine shop, machine shop says he has a set rebuilt someone left and never came back to get, for the same price as having mine rebuilt. So ...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. **No matter what method you choose, once order is ...