WebMar 29, 2024 · The CNC-ported LS9 heads blend the engineered strength of the LS9 cylinder head design, which is constructed with A356T6 aluminum alloy, with the airflow enhancements provided by GM's extensive testing. The result is a ten percent improvement over the unported LS9 head. And while concerns about durability are logical – porting … WebJan 21, 2024 · RPO LS1 cylinder heads are aluminum with 67cc combustion chambers, cathedral intake ports with 200cc runners, oval exhaust ports with 70cc runners, 2.000˝ …
Understanding GM LS-Series Cylinder Heads - CarTechBooks
WebMar 5, 2024 · The CNC Ported 862 LS Heads are the modern era’s most demanding cylinder heads. New stainless steel swirl polished 2.00 and 1.57 valves, new springs for up to.650 … 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. ina marinated olives
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 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 … WebOur fully CNC'd 706 or 862 heads give you an aftermarket 2.020 intake/1.570 exhaust with an intake flow of 305cfm and an exhaust flow of 220cfm. 832-619-1622; 7413 Wright Rd. Houston, TX 77041; ... Our 706 & 862 ported heads include: Our in house CNC port; PCD surfaced to your desired chamber size; incentives theory of motivation