What did 243 heads come on
234-4317 is for 2004 models, it has same length bolts. 234-4316 and 234-4110 are the one's you want to chose from. The only difference between these two are that 234-4110 has Hex heads and 234-4316 has 12-point heads. So basically chose the Nut style you want. Its $30 more for 12-point heads.Unfortunately I cannot tell you what motor they come on but try and find a set of the 799's. They are the same as the LS6 243 castings without the sodium filled valves. Still 61.15cc chambers but 2" intake valves. ... I know 243 and 799 heads on 5.3 is a popular swap, but never thought about shrouding issues. Either way, still an improvment ...However, unlike the 243 heads, they do not require cleaning. ... 799 heads came on trucks manufactured around 2005 and above, as well as newer models of 5.3 and 4.8-liter trucks, come with 799 heads. However, Chevy unveiled the L20 4.8-liter engine, which had the 799 cylinder head in 2010.
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stock 243's are worth about 15 rwhp, with cam and headers maybe 20-25 rwhp at most. i was in the same boat decided to hold the 243's until next yr or longer and send them to cartek for a 2X job and mill then then they will be worth about 40 to 50 rwhp. somebody else on the forum will come along and give you some more advice from experience with stock 243's. good luck btw what cam will you be ...05 LS2. I know the cam is .525 on both sides, but how much lift can the stock valve springs take on stock 243 heads? I think you're limited to around .550 with the LS6 springs. A lot of guys go to 918 springs with mild camshafts like the GT2-3. Doing the math on a 1.8 rocker makes it .554 lift.Description. GM GMC CHEVY 5.3 5.7 6.0 LS6 LS2 CYLINDER HEADS CASTING 243. GM GMC CHEVY 5.3 5.7 6.0 LS6 LS2 CYLINDER HEADS CASTING #243 ONLY REBUILT. STOCK HEADS. THIS SALE IS FOR CASTING NUMBER ENDING IN 243 ONLY. CATHEDRAL INTAKE PORTS. VALVE SIZES intake 2.000 ex 1.552. CORE RETURN REQUIRED. These heads are sold as a pair.The stock 348 (right) heads carried 1.94/1.66- inch valves while the standard passenger 409 heads carried 2.06/1.72- inch valves. The high-performance heads contained 2.19/1.72-inch valves, and the growth in valve size required thicker, heavier, valve springs to support the new cams with more lift and duration.A good shower doesn’t just get you clean; it also relaxes and refreshes the body and spirit. If your shower isn’t blissing you out, perhaps it’s time to upgrade to a shiny new show...2002 Camaro Z/28 Pewter. Originally Posted by 98TransAmWs-6. Here are the differences: 243 heads came with 2.00 hollow stem intake valves (lighter) and 799 heads came with regular solid 2.00 intake valves. 243 came with sodiom filled stem 1.55 exhaust valves (lighter and more heat dissepation) and 799 came with regular solid stem 1.55.Rick_L. 40123 posts · Joined 2007. #11 · Oct 10, 2013. There are factory D ports - LT1 and fast burn are two. Again, there are no factory round ports. Most Chevy exhaust ports are square/rectangular with a radiused corner, as said. If the intent of this question is how to select an exhaust gasket or header, the rule for gaskets is that ...Did the 317 heads come on the 6.0 liters, and/ or would they be a good casting head for the stock LS1? or would the Cnc'ed 243's be better? thanks for everyone's advice!53 posts · Joined 2010. #4 · Nov 12, 2017. Unless you're spending money on AI ported 243's, go with the LS3's. LS3's flow more and will keep the port velocity up compared to the typical hogged to hell port jobs I've seen on factory cast heads. There are very few shops that port heads well, with AI being the best around.The outer planets Jupiter, Saturn, Uranus and Neptune all have shorter days than Earth. Among the terrestrial planets, Mars has a slightly longer day than Earth at 24 hours 37 minu...Just Porting is not always a good idea. but having proeprly ported heads to your application is. I took a new set of GM 243 heads to a friend, and we cleaned up or polished the rough edges inside. not really porting to make the runners larger Then he milled the heads down to approx 60.5cc.Just started taking the springs and stuff of my 990's today, they are a pretty good head out of the box but with a little cleaning up in bowl area and adding a 2.25 intake valve the 990's become a great head. I had a set of 188's looked the same as the 990's, did not need both sets so I sold the 188's. L-29 461 BBC 11.10@118mph 9-30-22.The newer heads were 317 or 035 casting numbers, which featured larger valves like the 799 and 243 heads, but also larger combustion chambers, which means the static compression ratio will be lower unless the heads are milled to increase the compression ratio. This makes these heads slightly less desirable than the 243/799 heads.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.The 243 heads are factory cylinder heads that were used on the LS6 engine found in the 2001-2004 Chevrolet Corvette Z06. They are made of aluminum and have a …
Realistic Capabilities of LC9 5.3. Ill go on and say im very, very inexperienced with LS stuff. I just snagged a 08 LC9 aluminum block 5.3 for dirt cheap. It has a bad crank (spun rod bearing), 243 heads, truck manifold.May 15, 2024 · The 799 cylinder heads come with a 64 cc combustion chamber, whereas the 243 comes with a 65 cc combustion chamber. While the difference seems ignorable, it is a known fact that a smaller combustion chamber will create more compression and improve vehicle performance.LS1 LS6 243 / 799 Aluminum Cylinder Head CNC Porting Service ( Customer Supplied Bare Heads ) CNC Ported LS1 243 / 799 Cylinder Heads, Customer Supplied Bare Casting heads. $599.95. Options. Valve Job with new Valve Guides + $400.00. Resurface for MLS Gaskets + $150.00. Cylinder head Assembly + $150.00.What did LS 243 heads come on? Sometimes referred to as the cathedral port design , the 243 heads were developed by GM engineers in 2001 and featured prominently on LS6 engines until 2006. Initially made for C5 Corvette models, these powerful heads soon found their way into other engines including the truck-spec LQ9 and LQ4 versions both of ...
9084 posts · Joined 2002. #10 · Jun 13, 2008. A good quality port/polish job will get you a fair amount of free hp with the 063's,just how much additional hp depends on the cam/intake/carb/exhaust etc. If your running headers with free flowing exhaust and can afford a port job i would go for it along with some of the larger manley race flow ...Getting the right head for your needs requires you to know a little bit more so you can ask the right questions and get the right answer. Component Breakdown Cylinder Head. LS1 engines come with aluminum heads. Parts and features on the head are the intake and exhaust ports, combustion chambers, seats, valves, springs, retainers, keys, and guides.Good deal guys. but two different casting facilities. Makes one wonder, and the idea of a aftermarket ported or polished heads more important, The two different 243 heads, one with the triangle sand cast mark and the 243 head without the triangle sand cast mark were 5-7 hp and lb ft difference. Has any one flow bench tested the stock 799 heads ...…
Reader Q&A - also see RECOMMENDED ARTICLES & FAQs. Easier to replace a head if more than a few. Yes, it's 2009. Possible cause: The LS engines with 799 heads are 5.3L and 4.8L. The sophisticated architecture, .
Even stock 243 heads flow great. AFR did a comparison between many different heads vs their AFR 215 & 225s on another site and the stock 243s stepped up hard even matching the 225s flow at .550 lift and besting the 225s at .600 lift (albeit on a 4.125 bore which is pretty big, LS1 is 3.90 and LS2 is 4.00). ... Come discuss mods, horsepower ...Joined Jul 27, 2005. 1,569 Posts. #37 · Jun 13, 2008. Btw I have a stock set of 243 heads with low miles I will sell for $400. 99 TA Aps Extreme TT kit / Aes 390ci / TRick flow 220 /comp 230/230 cam/ Xtreme 4l80 /circle d 3500 stall / 9in.. 866RWHP/740RWTQ 16 PSI thru a unlocked converter.
799 Vs 243 Heads: Specification Comparison Table. Features. 799 Head. 243 Head. Casting: ... The 799 cylinder heads come with a 64 cc combustion chamber, ... difference, 243 head offers a more balanced ride as its smooth finish ensures better airflow. On the other hand, 799 head did ensure a powerful ride with a maximum of 25 HP.One of the most powerful figures in the company is leaving amid complaints that she enabled racial discrimination. Karen Parkin, Adidas’s head of human resources and one of its six...
C6 Tech/Performance - 243 Cylinder head question - I have What did LS 862 heads come on? It is no wonder that the 862 heads are so popular among General Motors' LM7 engine owners , for these cylinder heads pack plenty of power and a great design. Crafted from aluminum with a 61cc combustion chamber volume , these cylinder heads feature a cathedral-shaped intake port and an oval exhaust port . The 243 heads do flow better but that can be overcome with laFrench fuel workers entered a 15th day of strike action on Wednesd The 243 LS6 heads have a larger intake port, too. If all the 241/243/799 castings use the same size valves, the extra flow has to come from something different. I believe the 243/799 heads also have a straighter, better flow path than 241s do.A rally for former President Donald Trump drew a large crowd at Crotona Park in the Bronx Thursday night. NY1 reporters on scene said the turnout was in "in the thousands." Trump in 2020 won ... The LMG engine is a 5.3L Gen. IV iron-block engine used in GM tru Every year for a few weeks in February, the city comes alive for Montréal en Lumière. Every year for a few weeks in February, the city comes alive for Montréal en Lumière, a festiv...Did the 5.3 come with 243 heads? Of course, today's 5.3 and 4.8 both have 243 heads that are factory-designed. 243 heads were included in the LS6 engine produced between 2001 and 2006. You can determine the 243 heads on the 5.3 by examining the three-digit stamping next to the valve cover. The L33 is a 5.3L, Gen. 3 small block enginCBN milled to ensure a super smooth finish. (CBN stands for CubicJun 26, 2012 · 2752 posts · Joined 2011. #1 Some of the most sought-after cylinder heads for GM s LS engines are the 243 heads. They're often referred to as LS6 heads, as they were originally used on the … CBN milled to ensure a super smooth finish. (CBN stands for Cubic The 243 heads made about 20 RWTQ everywhere compared to the 317 heads, the chamber in the LS6 head is far superior to the 6.0 chamber. Bear in mind ECS had these same Stg 3 make over 600 RWHP on a N/A, hyd roller cam, pump gas engine that same year. ... Come join the discussion about racing, builds, pro mods, hot rods, events, turbos, nitrous ...We would like to show you a description here but the site won’t allow us. Patrik Balent. Updated on January 5, 2023. Cylinder heads are an i[Feb 20, 2010 · A_VAS. 4684 posts &#However, unlike the 243 heads, they do not require cleaning. 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 ...Suicidal Racing. 26755 posts · Joined 2006. #6 · Jul 31, 2012. Maybe its me an how i keep reading it..but it seems you think 317s flow more then 243s or 799s...they have the same ports as a 317..,317 just has a larger chamber 72 or 74cc vs the 243/799 64cc... some 5.3s have 799 heads stock.not sure on yrs though.