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The LC9 engine is a 5.3L, Gen. 4, aluminum small block engine used in GM trucks and SUVs between 2007-2011. For marketing purposes, it was also known as the Vortec 5300. The engine specs and information listed here is for a stock LC9 engine. Mechanically similar, General Motors' LS and LS-based Vortec engines wound up on almost every branch ...Find Parts and Accessories 243 cylinder heads KEYWORD and get Free Shipping on Orders Over $109 at Summit Racing! Use your Summit Racing SpeedCard today, and get 15% back - Get Details! ... Top-End Combo, PowerPort®, Heads, Track Heat® Intake, Track Max® Camshaft, Big Block Mopar, Chrysler 440, Kit. Part Number: TFS-K616-620-576. Not Yet ...yes the TR224 is a great cam for the 241 and stock 243 heads bc they are just matched about perfectly. the texas speed 244r and 228r are also really nice cams for these cars bc like you said, they have good bottom end. LS1 QSM/M6/17. LS6 heads, 232/234 592/595 111+4. Kooks 1 7/8, Super 40s cat back, K&N FIPK.

This is input only. I ran AFR 235 heads on my 408 with a BT cam and made 545 RWHP on a Mustang dyno. That was with a Fast 102, Nick Williams 102 TB, C6 type Haltech CIA, and 42lb injectors. Last edited by Last C5; 02-16-2016 at 10:27 PM. AFR, Trick Flows, Mast, quite a few options.Please post more pics of your P&P 243's and average performance gains with DD cam similar to the one mentioned earlier. By the way, the quality of workmanship it first rate. Thank you advance for your consideration. Best Regards, Pedders XA Track 1, Patriot/Zamora's Racing Heads Mission, TX Stage 3 243 Heads, Forged 403 Eagle ESP Stroker, TSP ...Jun 7, 2018 · 799 heads do not have the issue like the castech heads. 243 heads first appeared in 2001 on the LS6 Engine. First appeared in the Silverado in 2005 on the L33 5.3, and continued up until 2013. 2007.5-2013 SIlverado's with the 4.8/5.3 all used 243/799 heads. 799 heads first appeared in 2005 on the 4.8/5.3 Engine and continued til 2013.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.243 04 up LS6 aluminum center bolt 5.7 ***These castings were also used around 05 in truck applications*** 862 99 and up 4.8-5.3 Truck heads 706 99 and up 4.8-5.3 Truck heads 799 05 and up 4.8-5.3Truck heads ***reportedly came on a few corvette's too*** These are basically 243 Heads 873 99-00 LQ4 6.0 Iron center bolt heads

It includes a new ported/blueprinted LS6 oil pump, LS7 lifters, lifter buckets, LS2 timing chain, and GM MLS head gaskets. I will order the pushrods once I measure for the correct length. Already purchased a 25% underdrive pulley. ARP heads bolts, header bolts, and balancer bolt. The LG headers already come with GM exhaust gasketsIntake and Exhaust Ports. The intake and exhaust ports on the 243 heads are larger than those on the 799 heads, which allows for more air and fuel to enter the engine. This can result in higher horsepower and torque output. However, the smaller ports on the 799 heads can provide better velocity and airflow at lower RPMs, which can be beneficial ... ….

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The intake ports on 862 heads flow slightly less than the stock 243 heads that come on most 5.3L LM7 engines from the factory. However, the 862 heads have a smaller chamber size, which raises the static compression ratio by approximately 0.5 point on otherwise stock 5.3L engines. This can improve the power output and durability of the engine.The 317 heads featured ports that all but duplicated the LS2 243 heads, meaning they were cream of the cathedral-port crop in terms of airflow. The 317s did differ from the 243s in that they featured much larger (and less efficient) combustion chambers. Where the stock 243 heads featured 65cc chambers, the 317 heads featured 72 cc …

The 243/799 cylinder heads come with a 2.00" intake valve, 210cc intake runner, a 1.55" exhaust valve, 75cc exhaust runner, and it has a 64.5cc combustion chamber. The 243/799 3cc bigger combustion chamber might not seem like much but let's look at the factory Compression Ratio as seen here.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 …Exhaust flow at .600" - 180 (241) / 183 (243) The 243 heads have a D-shape exhaust port that improves flow and came with higher lift valves springs. Both heads came with 2.00" intake valves and 1.55" exhaust valves. To my understanding, this is all the difference. Last edited by R6cowboy; 02-26-2011 at 01:52 PM.

knoxville 24 arrest Apr 11, 2010 · 45 posts · Joined 2006. #4 · Apr 12, 2010. I'll recommend TFS 215 heads and a 224/228 comp cam. A friend of mine has this package and I was really impressed. With a ported fast he made 450 rwhp and the car idled and drove great. It was actually a little tame for my taste, but sounds like what you're looking for. trailmanor 2720 for salecobb county warrant division Dec 22, 2010 · 821/823 castings. im going to order ls3 heads but i would like to know the difference between 821/823 castings,i thought i read somewhere they were cast using a different process or something to that effect ,so which is better ls3 or l92 or is there no difference besides the map sensor. IBM 04/A4, #243 heads, Mild Blower cam by Comp …Researchers have discovered abundant colonies of mycobacterium in residential shower heads. HowStuffWorks takes a looks and offers a quick fix. Advertisement Taking a shower should... 2011 toyota sienna ac light blinking The two types of heads, 241s and 243s are found in many vehicles. The combustion chambers for each of these types differ slightly: 243 heads have an internal volume of 65cc while 241s have a 67cc size. Due to this difference in size, the compression ratio for 243 heads is higher than that of 241s, meaning that more power can be … expendables 4 showtimes near the grand 16 slidellkent ehrhardt daughter weddingpublix lake wylie pharmacy Jan 14, 2018 · I know 243's are good but didn't know if 862's are any good when they're right in front of me. They won't flow as good as 243 but you'll have better compression vs 243. You can have them ported for a reasonable price and have a good valve job done on them to make them perform. They'll never be rock stars but they'll do fine with that cam. half cornrows half individual braids I have a lq9 .020 over, 243 heads, headers, gen 4 intake, btr stage 3 v2 truck cam. You can probably take my spark table and subtract 2* globally to get you started. I would say you could steal more than the spark table and get a good start for your setup. Sweet thanks. Most of the tune is good to go, just the timing had me chasing my tail. snowjoe partsorigami bunny moneynorthern edge baystate 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 ...