Web2- New Casting the 370 are factory ported cast from a 375X port this is a... 2 new BB/C Pro Filer 385X racing heads. CNC ported w/ 5 angle valve job. $3795. Complete w/ Brodix … http://advancedinduction.com/LSX/AiLSxCylinderHeads.php danfoss 255 series motor WebLS3 Cylinder Head Assembly • Aluminum performance head • Fits any LS family engine with 4.000" bore or larger • 2.165" hollow stem intake, and 1.590" solid stem exhaust valves • .550" max valve lift • As-cast L92 style … WebDec 3, 2024 · I compared a set of stock 799/243 cathedral-port heads vs the 823 LY6 rec-port heads on an LY6 short lbock. The motor was equipped with a healthy Comp cam an... code promo the north face WebGM 243, 799, & 317 LS2/LS6 Options: Performance Rebuild Package Our Performance Rebuild option includes our high end CNC'd valve jobs, precision valve grinding, milling to any chamber volume, cleaning, inspection, and professional assembly. Typical gains are 10-20rwhp. 226cc Full CNC Porting Package The go-to head for 450-500rwhp 5.7/6L's. WebMar 13, 2024 · The 317 heads are modeled similarly to the 243 heads found on LS2 or LS6. The LQ4 engines were equipped with 317 cylinder heads between 2001 and 2007. This … code promo the north face 2022 WebGM LS3 L92 6.0L 6.2L Cylinder Head 823 Square Port Assembly Set Pair. Brand New. $1,099.99. Seller: custardcoresupply (1,939) 99.1%. or Best Offer. Free shipping. Sponsored. Results matching fewer words.

WebSep 24, 2015 · GM 243 (LS6) and 799 (LS2), 218 cc. The 218-cc LS6/LS2 head is a mild upgrade from the basic performance rebuild, which boosts flow by 32.2 cfm on the intake side and 28.5 cfm on the exhaust side, at … WebOct 12, 2024 · Overall, the specs of the Enforcer heads are exactly what you would expect from a budget cylinder head. The Enforcer heads have a 210cc intake port volume along with an 82cc exhaust port volume. The heads use a standard LS 15-degree valve angle with a 1.500-inch outside diameter valve spring pocket. The combustion chamber measures … code promo the north face 2023 WebDec 3, 2016 · Joined Nov 29, 2016. 18 Posts. #2 · Dec 2, 2016. The compression depends upon how much you plan to mill. The rule of thumb is 1cc per every .006" milled. So, if you mill .030", then you will have shaved 5cc off the combustion chamber. I'm running .030" milled LS3s on a 404 stroker. The factory LS3 chamber is 69.8cc. The 823 cylinder head has a chamber of 65cc (cathedral style ports) or up to 70cc with the more commonly encountered rectangular ones. To produce the power these heads are noted for, the head has a very large intake port (257cc, 2.165-inch diameter) and an exhaust port capacity of 87cc (1.59-inch diameter). Wi… See more There are several cylinder headsavailable for the LS3 block, but not all are made equal. Let’s talk though some specs of the 823 first (also known as an L92 head). The three-digit number refers t… See more Here’s a quote from enthusiast site LS Engine DIY: “Though sacrifices were made for emissions, you won’t find a higher-flowing head for the money.” In effect, General Motors found the sweet spot between price, power, an… See more Vehicles which should accept an unmodified 823 cylinder L92 head include any GM model built betwe… See more In terms of performance, price and flexibility, the 823 cylinder head for LS3 engines scores highly. In fact, on all the gearhead forums, it’s hard … See more danfoss 25t65 datasheet WebProfessional porting and machining of combustion chambers required. No seats or guide machining. C5R rectangle-port design – requires aftermarket rectangle-port intake manifolds. Designed for big-bore (4.100" min) LS7/C5R/LSX blocks. 210-cc “as-cast” intake ports. 70-cc “as-cast” exhaust ports, same as production LS6. danfoss 25t65 thermostat manual WebApr 2, 2024 · EQ's CH364C head (or CH364CA, assembled) ostensibly replaces Gen IV cylinder head casting numbers 364, 716, 821, and 823 in the OE repair/rebuilder world, …

WebDec 29, 2010 · 1LE. Joined Sep 26, 2006. 24,227 Posts. #6 · Dec 29, 2010. From what I understand there is no real difference in the 821 and 823 other than valves and springs. The Ls3 version has the light weight valves and better springs. There is another casting number for the L92's that is suppose to be a rougher earlier design, that would be the one to ... code promo the main ingredient company WebJul 12, 2024 · Buy GM LS3 L92 6.0L 6.2L Cylinder Heads REMANUFACTURED 823 Square Port Assembly w/Rocker Arms PAIR 823 ; 821 ; 5364 ; 12600936 ; 12629062 ; … danfoss 25t65 thermostat wiring