862 Vs 243 Heads

862 Vs 243 Heads. Gm 243 (ls6) and 799 (ls2), 226 cc. The first has to do with port shape. Imo, if you have any plans of adding a aftermarket camshaft later down the road, pass on the 1.8 ratio rockers. The stock heads should be something like 61.15 cc. 799 as well as 243 heads vs. The cnc ported 862 ls heads are the most demanding cylinder heads in the modern era. Why are chevy 706 heads better than 317 or 862 heads? 1.89 inches exhaust valve diameter: 243 are ls6/ls2 (difference in valves) 243 are ls1 l92 are on the g8 i think 853 are the smaller 5.3 heads but not sure The 862 heads are pretty good because they can deliver better compression after a porting job. I recently put a bigger cam in the car and picked up zilch.zero.nada and im wondering if im at the limit of the 862s. I've never heard of 862 heads, but i'm not tooo familiar with factory gm heads. The 862 head is a rectangle port, while the 243 is a square port. Casting number 706 and 862 head: The spm method is considered to be a more consistent process, but once you port the 862 head, any difference to the 706 head goes away.

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The cnc ported 862 ls heads are the most demanding cylinder heads in the modern era. Also, 706 heads are considered to be superior to 826 cylinder heads. We have a few options you can purchase such as a pair of stage 1, stage 2, stage 3, or stage 4 ls 243/799 cathedral casting 5 axis cnc porting with stainless valves and wp.660 dual race springs with wp titanium retainers. There are three basic differences between the ls1 and ls6 heads. The first has to do with port shape. 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. However, if you desire improved horsepower with excellent power output, the 243 cylinder head is a perfect choice. Expect approximately 10 peak hp. #2 · oct 13, 2010. Casting number 706 and 862 head:

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They won't flow as good as 243 but you'll have better compression vs 243. The 799 heads will need to be milled a bit to get the compression ratio back to where it needs to be. I am wondering if i should go aftermarket 243s instead of the 823s for the same price i'm going to have in the l92 heads once they are all fixed up. We have a few options you can purchase such as a pair of stage 1, stage 2, stage 3, or stage 4 ls 243/799 cathedral casting 5 axis cnc porting with stainless valves and wp.660 dual race springs with wp titanium retainers. Discussion starter · #1 · dec 3, 2013. 862 is a 5.3 liter head. That will determin what pushrod to go with. But again, porting costs cash, so 706 heads is the best choice to cast in stock form. 1999+ 4.8l / 5.3 liter truck material: So we are all getting together tonight and i would love some education as i bought my ls1 with worked over 243's on them so i don't know the difference but would love.

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4.8l/5.3l truck 862 and 706 head castings. You can have them ported for a reasonable price and have a good. I am wondering if i should go aftermarket 243s instead of the 823s for the same price i'm going to have in the l92 heads once they are all fixed up. They come with all new stainless steel swirl polished 2.00 and 1.57 valves, new springs for up to.650 lift, new retainers, spring seats, and valve seals. We have a few options you can purchase such as a pair of stage 1, stage 2, stage 3, or stage 4 ls 243/799 cathedral casting 5 axis cnc porting with stainless valves and wp.660 dual race springs with wp titanium retainers. I recently put a bigger cam in the car and picked up zilch.zero.nada and im wondering if im at the limit of the 862s. 1999+ 4.8l / 5.3 liter truck material: Meanwhile, you must contact an expert auto mechanic with an intensive understanding of performing the porting job. I know 243's are good but didn't know if 862's are any good when they're right in front of me. 799 as well as 243 heads vs.

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Speed works has teamed up with wilkes performance to bring you the most powerful heads available. Imo, if you have any plans of adding a aftermarket camshaft later down the road, pass on the 1.8 ratio rockers. Gains from a higher ration rocker arm (1.8 vs 1.7) are going to be minimal. The 799 heads should be 64.45. #2 · oct 13, 2010. Casting number 706 and 862 head: While not the largest name in the industry, ai is well respected. Casting number 706 and 862 head: Smaller combustion chamber(61.5cc), increased cr. Expect approximately 10 peak hp.

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799 as well as 243 heads vs. Speed works has teamed up with wilkes performance to bring you the most powerful heads available. They depict an excellent flowing head and provide higher compression. I recently put a bigger cam in the car and picked up zilch.zero.nada and im wondering if im at the limit of the 862s. I've never heard of 862 heads, but i'm not tooo familiar with factory gm heads. Expect approximately 10 peak hp. The spm method is considered to be a more consistent process, but once you port the 862 head, any difference to the 706 head goes away. I am wondering if i should go aftermarket 243s instead of the 823s for the same price i'm going to have in the l92 heads once they are all fixed up. 200 cfm intake and 70 cfm exhaust for the 241's, and 210 intake and 75 cfm for the 243's. Imo, if you have any plans of adding a aftermarket camshaft later down the road, pass on the 1.8 ratio rockers.

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I know 243's are good but didn't know if 862's are any good when they're right in front of me. 1.55 inches stock head flow numbers 826 cylinder heads are not as sophisticated as some of their counterparts. Casting number 706 and 862 head: 200 cfm intake and 70 cfm exhaust for the 241's, and 210 intake and 75 cfm for the 243's. 317 heads most people tend to prefer 317 heads as they have improved ports, same as 243 and 799 heads, which are more expensive. 862 is a 5.3 liter head. 1.55 inches stock head flow numbers I've done a fair amount of research but i don't know what my hp will be like between the aftermarket port and polished 243 and the milled and ported 823 heads. That will determin what pushrod to go with.

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But again, porting costs cash, so 706 heads is the best choice to cast in stock form. Smaller combustion chamber(61.5cc), increased cr. We have option of stage 1 2.0 intake/1.55 exhaust (stock valves), stage 2 2.02 intake/1.57 exhaust (stainless valves), stage 3 2.05 intake/1.57 exhaust (stainless valves), or stage 4 2.08 intake/1.60 exhaust. 241 is a 5.7 liter head. I've never heard of 862 heads, but i'm not tooo familiar with factory gm heads. #2 · oct 13, 2010. 200 cfm intake and 70 cfm exhaust for the 241's, and 210 intake and 75 cfm for the 243's. Meanwhile, you must contact an expert auto mechanic with an intensive understanding of performing the porting job. Vehicle enthusiasts argue about 243 heads vs. 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.

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The stock heads should be something like 61.15 cc. Discussion starter · #1 · dec 3, 2013. So we are all getting together tonight and i would love some education as i bought my ls1 with worked over 243's on them so i don't know the difference but would love. The spm method is considered to be a more consistent process, but once you port the 862 head, any difference to the 706 head goes away. 12559862 12561706 combustion chamber volume: 1.55 inches stock head flow numbers Casting number 706 and 862 head: Speed works has teamed up with wilkes performance to bring you the most powerful heads available. Meanwhile, you must contact an expert auto mechanic with an intensive understanding of performing the porting job. However, the cylinder heads may not flow well compared to 243 heads.

One Guy Was Saying The Intake Valve On The 862 Is Smaller Then The 243 And Would Take Some Work To Make Them Run Better But The 862 Also Bumps The Compression Up A Bit As Well That The 243 Does Not.

I want to know if i would pick up anything swapping in stock 243s heads in place of stock 862 truck heads that i am currently running. Speed works has teamed up with wilkes performance to bring you the most powerful heads available. These heads have been disassembled, inspected, cleaned, 5 angle valve job, and milled slightly to clean up the heads. The 862 head is a rectangle port, while the 243 is a square port. Expect approximately 10 peak hp. Smaller combustion chamber(61.5cc), increased cr. The 799 heads will need to be milled a bit to get the compression ratio back to where it needs to be. The first has to do with port shape. They come with all new stainless steel swirl polished 2.00 and 1.57 valves, new springs for up to.650 lift, new retainers, spring seats, and valve seals.

If You Are Still Not Convinced, Read Through To Understand Why Casting 862 Heads Is A Great.

1.89 inches exhaust valve diameter: 1.55 inches stock head flow numbers 1999+ 4.8l / 5.3 liter truck material: The stages is the size of the valves that you choose. 1.55 inches stock head flow numbers However, if you desire improved horsepower with excellent power output, the 243 cylinder head is a perfect choice. There are three basic differences between the ls1 and ls6 heads. Imo, if you have any plans of adding a aftermarket camshaft later down the road, pass on the 1.8 ratio rockers. Discussion starter · #1 · dec 3, 2013.

Casting Number 706 And 862 Head:

Meanwhile, you must contact an expert auto mechanic with an intensive understanding of performing the porting job. Gm 243 (ls6) and 799 (ls2), 218 cc. Gains from a higher ration rocker arm (1.8 vs 1.7) are going to be minimal. However, 317 heads have larger combustion chambers of 71.06cc, which will cost performance, especially on a naturally aspirated engine. I recently put a bigger cam in the car and picked up zilch.zero.nada and im wondering if im at the limit of the 862s. The 862 casting with bigger valves and good port work is one of the best early ls cathedral port heads. But again, porting costs cash, so 706 heads is the best choice to cast in stock form. 799 as well as 243 heads vs. 241 is a 5.7 liter head.

You Can Have Them Ported For A Reasonable Price And Have A Good.

317 heads most people tend to prefer 317 heads as they have improved ports, same as 243 and 799 heads, which are more expensive. 12559862 12561706 combustion chamber volume: They depict an excellent flowing head and provide higher compression. That will determin what pushrod to go with. 1.89 inches exhaust valve diameter: 12559862 12561706 combustion chamber volume: I've never heard of 862 heads, but i'm not tooo familiar with factory gm heads. 1999+ 4.8l / 5.3 liter truck material: 200 cfm intake and 70 cfm exhaust for the 241's, and 210 intake and 75 cfm for the 243's.

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