Porting 862 heads

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August undefined, 2024

WebMay 22, 2024 · Similar to the 706 castings, the 862 heads featured 61cc chambers, a 1.89/1.55-inch valve combo, and 200cc intake runners. See all 20 photos See all 20 photos After the baseline on the stock... WebOtherwise running stock 706 heads and stock truck intake with DBW throttle body. I have a spare LS short-block that is also an LM7 (I think) with 862 heads and no intake on it. My plan is to rebuild the spare block from the inside out with all new bearings, BTR "Torque" cam, Weiand aluminum intake, and then port/polish the heads.

LS 862 head porting - Don Terrill’s Speed-Talk

WebOct 26, 2024 · To make the head ready for our chamber work, we started by scribing the intended bore size on the head using a gasket as a template. The normal procedure involves using the gasket for the... WebCNC Porting service offered for GM 5.3L 862 and 706 Cylinder heads at CNC-Motorsports The store will not work correctly in the case when cookies are disabled. ... CNC Ported LS 5.3L 862 Cylinder Heads, Customer … how to save tig

862 Heads - All you need to know - Auto Care

WebPrecision Race Components Aftermarket LT1 CNC Cylinder Heads $ 2,937.59 Precision Race Components Aftermarket LT4 CNC Cylinder Heads $ 3,483.29 PRC CNC Ported 6.2L Hellcat Cylinder Heads $ 3,865.99 PRC CNC Ported 6.4L Apache Cylinder Heads $ 3,865.99 PRC CNC Porting Service - Customer Supplied 6.2L or 6.4L Apache/Hellcat Hemi... $ 1,121.99 WebOur Performance Rebuild option includes our high end CNC'd valve jobs, precision valve grinding, milling to any chamber volume, cleaning, inspection, and professional assembly. … WebThe price listed is for you sending your cathedral port cylinder heads (4.8/5.3, LS1, LS6, LS2, LQ4/9) to us for porting. Our stage 1 porting service will include the re-use of the stock vales. Stage 2.5 will include … how to save tiff in photoshop

Porting 862’s Bowl cuts & Raising the roof - YouTube

Are 862 Heads a Better Choice? - Allied Motor Parts

WebNov 24, 2024 · 706 Heads Vs. 862 Heads; The Chevy 706 LS Heads are semi-permanent mold (SPM) made and superior to the most common 862 heads, which are sand cast. The SPM method is a more consistent process, but porting 862 heads nullifies the difference between them. But again, porting costs cash, so 706 heads is the best choice to cast in … WebMar 8, 2024 · Upgrading LM7 Cylinder Heads The stock heads can be CNC ported for more airflow and milled up to .030 in. for more compression. Flow numbers can be as high as 325 cfm at .600 lift. Lightweight hollow stem LS3 valves can be cut to 2.000 in. to fit the seats. Between the light valves and better springs, the engines will pull cleanly to 7000 rpm. north feldcroft vaultWebNov 18, 2024 · The most popular 862 heads in the market are the CNC Ported 862 LS heads with a stainless-steel swirl that is polished and has 2.00 and 1.57 intake valves. They also come with new springs that allow 0.650. The different types of 862 S weights fit differently to various vehicle models such as Silverado, Tahoe, and others. For Some models ... north felaw maltings

"WebOct 15, 2024 · CNC Ported 862 LS Heads- The Ultimate New Gen Cylinder Heads The CNC Ported 862 LS Heads are the most demanding cylinder heads in the modern era. They … " - Porting 862 heads

Porting 862 heads

LS 862 head porting - Don Terrill’s Speed-Talk

WebOur 706 & 862 ported heads include: Our in house CNC port; PCD surfaced to your desired chamber size; Proprietary competition valve job; Hand blended valve job ***This is our … WebMar 5, 2024 · The 862 heads have 200cc intake runners, a 1.890/1.550 in. valve combination, and a combustion chamber volume of 61cc. The cathedral-shaped intake port and oval …

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WebJan 27, 2024 · Description 8K views 2 years ago Sharing part #1 of porting of a set of 862 cathedral port heads. Outlining the bowl cut, burr and showing 3x burrs and the process of … Web88K views 3 years ago WESTECH PERFORMANCE GROUP 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...

WebApr 15, 2024 · The LS engines with 799 heads are 5.3L and 4.8L. The sophisticated architecture, cathedral-shaped port, and smaller combustion chamber work amazingly on these truck engines. The smaller combustion chamber with a higher compression ratio offers increased power output. The 799 LS heads boost horsepower up to 25 hp. WebSep 13, 2024 · Porting LS 862 heads 215cc HeadFlowInc 14.5K subscribers Subscribe 4.6K views 3 years ago Starting another set of 862 heads: Upgrading to 2.00”/1.55” valves and porting them to …

WebI ported my 862 heads on my LM4 5.3L with a SS2 cam I haven't re run the car yet but I'm sure it made a difference up top. It feels like it pulls harder on the top end and I had to add some fuel up top so that tells you right there … WebPorting to improve flow while maintaining decent port velocity for the 4.8 Turbo build.Castings: 2002 862 upgraded to Factory LS1 2.00” Intake valves and 1.5...

WebApr 23, 2024 · Ported 862 LS heads Final Ports HeadFlowInc 14.5K subscribers Subscribe 14K views 4 years ago Final ports on the 862’s for my Turbo 4.8 build. I have the final bowl cut percentages and volumes...

WebJun 8, 2016 · Location: Raleigh, NC. Re: LS 862 head porting. by nobody special » Wed Jun 08, 2016 1:45 pm. The 317 heads basically have the 243/799 ports but with a 70cc combustion chamber. Going to the smaller chamber for increased compression is worth some power. The 317 replacement costs seem to range from $150-$300 per pair. north featherstoneWebCylinder Head Parts & Services; Dry Sump Oil Pumps & Parts ; Fuel System Parts; Gaskets & Seals; Harmonic Balancers; High Performance Fasteners; Ignition Parts; ... KAT-M7107 CNC Port LS1/Truck 862, 706 Cylinder Heads (PAIR) In Stock (0) Reviews: Write first review. Description: CNC Porting Service Item #: KAT-M7107. Condition: New. Price: $534.99. how to save tiktok on computerWebSep 13, 2024 · Porting LS 862 heads 215cc HeadFlowInc 14.5K subscribers Subscribe 4.6K views 3 years ago Starting another set of 862 heads: Upgrading to 2.00”/1.55” valves and porting them to … north federal highwayWebApr 20, 2024 · The 706 & 862 heads have a 61cc combustion chamber. Most of the other LS cylinder heads have larger combustion chambers. You’ll lower the compression ratio if you go to some other heads. That Castech heads are the ones that are known to be the problematic heads prone to cracking.. north federicoWebMar 11, 2024 · The 862's have the same port size and runner volume, they were just choked by the intake valve. Open it up to the same size as the 241's and you should see an improvement across the board. Also, the 862's have a much smaller combustion chamber volume at only 61.15 cc, around 6 cc smaller than the 241. north fen road glintonThe 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. how to save tigerWebNov 18, 2024 · The 862 LS has the right features to perform efficiently in a vehicle. The most popular 862 heads in the market are the CNC Ported 862 LS heads with a stainless-steel … northfeild jd