862 vs 243 heads
Here's a quick data sheet on the specs of 799 heads. Due to the similarity, 243 heads should follow the same characteristics in normal situations: Combustion chamber volume: 64.45cc. Intake port volume: 210cc (sometimes seen as 209cc too) Exhaust port volume: 75cc. Intake valve diameter: 2.00 inches.The 243 heads were also used on the Corvette LS6, but true LS6 heads had the light weight sodium filled valves. All these numbers we are throwing around are the casting number and they are stamped on the outside of the head. It's also the last 3 digits of the part number stamped under the valve cover.
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862 Vs 243 Heads . One of the first things that you need to consider when building a performance engine is what heads to use. There are many different options on the market, but two of the most popular choices are 862 castings and 243 castings. So, which one is better? The 862 heads were originally designed for high performance applications.lt1z. 30920 posts · Joined 2007. #6 · Mar 12, 2015 (Edited) A 317 head on an LS2 will be 10.0:1. A 243 on a LQ9 will be 10.9:1. Only major difference is combustion chamber cc. I would not go with less then 10.0:1 compression on a 2300. Mill a set of 317s to 70cc, run an LS9 gasket and head studs. C6 M6 Vortech 857/725.The factory-built motor dished out about 430 horsepower right out of the gate, and the cylinder heads play no small role in that impressive output. The LS3 heads hit the flow bench. The LS3's 319-T5 aluminum alloy cylinder heads use 2.165 in (55.0 mm) intake valves, 1.59 in (40 mm) exhaust valves, and a 15 degree valve angle.
The L33 is an example and the its pistons are 4.8l piston, same part number BTW. All the later 5.3l's have flat tops and 243 heads. So the blocks are the same. The rods and crank are the only differneace. Use the crank and rods from the 5.3L and use 243 heads and have the 5.3L H.O. or L33 (well an iron block version at least).I'd be into the 243's for more than the "Proheader" heads which claim pretty good flow numbers and have larger SS valves. ... Had originally planned to run the 862 heads. Then found a set of 243's for $300 and figured I might as well grab them… now I found these. Save Share.Apr 16, 2013 · 862 s Vs 243 s..... So what the difference between some milled 862s and some stock 243s? Also how big of a difference would the 243s and a nnbs intake do on a 2003 4. ...The first has to do with port shape. The LS6 and the later LQ9-LQ4 heads used reshaped intake ports and D-shaped -- as opposed to oval-shaped -- exhaust ports for better flow: 200 cfm intake and 70 cfm exhaust for the 241's, and 210 intake and 75 cfm for the 243's. The second major difference is that the LS6 heads used hollow, sodium-filled ...
Are the 799/243 that much better ported , then the 862 ported with bigger intake valves? Heads are for a turbo car running M1. Thanks Mike. in this thread in this sub-forum in the entire site. Advanced Search Cancel ... 862 5.3 heads. Jump to Latest Follow 1 - 3 of 3 Posts ...Mar 27, 2010 · If you are just installing stock heads with no work, forget the 5.3 heads and just get a set of decent 243 heads which will still bump CR up 1/2 point on the LS1 (64cc combustion chambers compared to 66 CR of the 241 heads). 2004 torrid red with red interior A4 GTO (1 of 499) ….
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Remember, not all 243 heads are LS6 heads, but all LS6 heads are 243 castings. True LS6 heads will have the stainless steel hollow-stem valves. ... 706/852/862 '99-up 4.8L-5.3L truck heads - 61 ...Colleges and new high school graduates have what I think is a strange idea. They think every freshman is an ad Colleges and new high school graduates have what I think is a strange...
243 heads are known for their larger port and valve sizes, which are typically about 210cc and 2.00 inches respectively. This makes them perfect for high-flow, high-RPM applications, providing more power at higher speeds. On the other hand, the 799 heads have smaller port and valve sizes, around 200cc and 1.89 inches respectively.So I have been playing around with some 243 heads, ported them to 225 cc on the intake port left the intake with a carbide finish and ported the exhaust to 83 cc stock the heads are 215cc/75cc. I just did a standard clean up bowl porting remove the rocker boss trim down around the guide valves are 2.02/1.57 cheapo stainless valves I was hoping ...862 heads vs 243. The 862 casting number represents the 862 cylinder head. 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.
plan with tan vip login If you are hearing that both 799 and 243 heads are the same, here is where you will spot the main difference. The 799 cylinder heads have a sand casting and finish, which makes them rough. On the other hand, the 243 heads have a metal casting and finish, which makes them smoother than sand casting ones. I didn’t notice that myself at … julian road imagingwhat time does green dot direct deposit post Where the stock 243 heads featured 65cc chambers, the 317 heads featured 72 cc chambers. The 317s were given the nod over the 243 since they offered the larger chambers that most closely duplicated those on the LS3 (71cc). The biggest difference between the 317 cathedral-port heads and the LS3 heads was the port shape and … bonchon coupons St. Jude Donor '03. 853 and 241 are basically identical. 853 was used on 99-00 LS1 engines. 241 was used on 01-04 LS1 engines. They both have a 66.67 cc combustion chamber (10.1 CR), 200cc intake runners, and 70cc (round) exhaust ports. The 243 head is the 01+ LS6/LS2 head.Jan 5, 2023 · The 243 vs. The 799 Cylinder Head. As you have most likely caught on by now, these two cylinder heads are practically the same. The main difference between the 243 and 799 cylinder heads is that the 243 was used on older engines from GM Research, while the 799 has been used on newer engines from multiple manufacturers. buffet greenvillecrawfordsville journal review obitsmarie jean charles shoprite stamford ct LS Heads: Cathedral-Port vs. Square-Port Heads. Time to eliminate the speculation with some facts from the dyno. Richard Holdener Writer Jul 09, 2012. See All 14 Photos. ... 243. 191. 318. 216 ...Mar 27, 2010 · If you are just installing stock heads with no work, forget the 5.3 heads and just get a set of decent 243 heads which will still bump CR up 1/2 point on the LS1 (64cc combustion chambers compared to 66 CR of the 241 heads). 2004 torrid red with red interior A4 GTO (1 of 499) why did katrina szish leave qvc Sep 1, 2017 · Remember, not all 243 heads are LS6 heads, but all LS6 heads are 243 castings. True LS6 heads will have the stainless steel hollow-stem valves. ... 706/852/862 '99-up 4.8L-5.3L truck heads - 61 ... takeoff autopsythe marsh king's daughter showtimes near northwoods stadium cinemaweekly math review q1 8 WHAT STOCK LS HEAD MAKES THE MOST POWER? WHICH CAM SHOULD I RUN IN MY 6.0L? WHAT IS THE BEST STOCK 6.0L CAM TO USE? STOCK 6.0L UPGRADES! ARE THE …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...