823 ls heads . 0L / 6. 2-liter supercharged LS9 V8. 660 PSI BTR Texas Speed. Jun 29, 2023 · Learn what 823 LS heads are, how they differ from other cylinder heads, and why they are good for sports cars with LS engines. Aug 3, 2022 · Learn about the features, benefits, and comparisons of the 823 cylinder head for LS3 engines. 00 Dec 15, 2010 · 823/243 head questions. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Apr 2, 2020 · 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, but performance enthusiasts will know it May 1, 2015 · ok so I'm slowly getting my LS swap together. 0L and 6. 823 LS 3 Heads Street Turbo Stainless 2. Find out the specs, port styles, valve sizes, and performance of 823 LS heads and their rivals. A core return is required. Sep 28, 2015 · The Gen III LS Engine vs Gen IV LS Engine Despite numerous differences the Gen III LS Engine and Gen IV LS Engine cylinder blocks share a lot of the same traits. For a street car, this design means excellent throttle response, torque and average power. LS3 Torq-R Cylinder Heads (SET) $ 2,304. Come discuss mods, horsepower, engine specs and more! Nov 12, 2024 · Upgrade your GM LS engine with the EngineQuest LS Cylinder Head #5364, 821, 823. Find out which vehicles can use this head and how to modify it for more power and performance. 180 / 1. 0L LQ4 2005 DBW 823 heads Aussie LS3 intake (I used this so the LQ4 MAP sensor plugs in) Motor has 190K miles, going to have the bottom end gone through at the machine shop, stock bottom end re build. 6. The casting number was posted by LG Get the best deals for Ls3 823 Heads at eBay. These heads are assembled and complete, no core exchange necessary. That includes porting on our 5-axis, a CNC valve job on our Newen Contour and getting milled to perfect flatness on our Berco (see videos down below). 2L Cylinder Heads w/ rocker arms & pedestal stands May 31, 2018 · Mechanically similar, General Motors’ LS and LS-based Vortec engines wound up on almost every branch of the GM family tree: Chevy, Pontiac, GMC, Cadillac, Buick—heck, even Saab, Hummer, and Isuzu got some LS love. 650 lift. These CNC ported heads com with all New Stainless Steel Swirl Polished 2. The cylinder head included in this listing will fit the vehicles listed below. Dyno tests have proven that comparable aftermarket cathedral port heads […] Jul 29, 2007 · C6 Tech/Performance - GM 821 casting heads vs 823/L92 - Anyone have any tech info on the differences in the new 821 casting compared to the 823/L92 casting? Is there a part number for the GM catalog yet on the new 821's? The 821's for those that dont know, are the LS3 heads. Exhaust Valve Diameter: 1. The product is designed to match casting number 823 and is compatible with LS3 and L92 square port engines from 2005 to 2008. 96; LS3 Torq-R Porting Service (SET) $ 1,504. It is also important to review / confirm the fitment notes above to assure the vehicle specifics of the head are correct for your application. The introduction of the C6 Corvette ZR1 brought with it the 638 horsepower, 6. This bare pair of aluminum cylinder heads is engineered to meet or exceed OEM specifications, ensuring a direct replacement for your LS3, L92, or L94 engine. com FREE DELIVERY possible on eligible purchases Get the best deals for Ls3 823 Heads at eBay. The motor was equipped with a healthy Comp cam an That said we use much of this internally as we're applying our LS head porting profiles to customer heads and we'll update it 823 2716 5364. Was: $1,599. com is a forum community dedicated to the LS1 Pontiac GTO. Stage 2 823’s on the assembly bench. Jump to Latest LS1GTO. 2L Cylinder Head w/ rocker arms & pedestal stand LS -4AN Steam Port Kit Receive notifications when cylinder heads are in stock and ready to ship. 165 1. EQ bare heads – ready to install the valve train! All EQ cylinder heads outperform their competitors! Includes shipping/freight. 165 in. Remanufactured. While Chevrolet wanted to provide the ZR1 with some serious grunt, they also had to ensure that the engine would be able to provide the durability and reliability that customers would expect from a factory-produced road car. Oct 15, 2018 · Buy NEW GM GMC 6. New Springs for up to . Nov 7, 2022 · This is a Remanufactured OE Stock LS3, L92, 6. 00 LowPro - LS / LT Billet Intake Manifold $ 3,999. * Part # : 823 also fits 5364 , 821 (we will ship anyone of these) * Description : Stock LS Series 6. Aug 9, 2018 · L96 Cylinder Head Specs; Casting Numbers: 5364, 823: Material: Aluminum: Combustion Chamber Volume: 70cc: Intake Port Shape: Rectangle: Intake Runner Volume: 257cc: Exhaust Port Shape: D-Port: Exhaust Runner Volume: 87cc: Intake Valve Diameter: 2. First Name. 99 15% off. Made from the highest grade aluminum. Rectangle: 4. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Engineered to fit 6. Models Supported: Replaces Casting Numbers: 5364 / 821 / 823 – LS3 / L92. If Jan 12, 2014 · I recently fell into a set of 823 heads or "LS3" square port heads that I ported. 2L Cylinder Head w/ rocker arms & pedestal stand Featured Products. Opens in a new window or tab. LPE CNC (823 Sep 24, 2015 · Cathedral port cylinder heads have been mistakenly dismissed by many in LS-series circles for being “old-tech. 2 LS3 / L92 / L94 CYLINDER HEADS CAST # 823/821 / 364 COMPLETE PAIR (CORE RETURN REQUIRED): Cylinder Heads - Amazon. 750 Mar 29, 2017 · Unported LS9 Cylinder Heads. LS3 823 stage 1 heads feature FED's advanced porting where we optimize intake and exhaust port for rapid combustion and maximum efficiency. or These seasoned GM LS3 heads have finally been given a chance to breathe after a full treatment on our state-of-the-art CNC equipment. 590 in. 99. 821 and 823 – LS3 Stage 2 Porting Service May 1, 2015 · ok so I'm slowly getting my LS swap together. Cylinder Head Bolt Style: Torque to Yield (TTY) Cylinder I compared a set of stock 799/243 cathedral-port heads vs the 823 LY6 rec-port heads on an LY6 short lbock. 400 Bore Spacing (same as the original SBC) Deep Skirt Block with Six Bolt Cross Bolted Main Bearing Caps (reminiscent of the old Ford side oilers, FE, and some early hemi blocks) Jul 12, 2021 · This is a Set of Remanufactured OE Stock LS3, L92, 6. 700 Lift Dual Spring Kit; Severe Duty Stainless Intake and Exhaust Valves, 2. 600 Jan 20, 2021 · Williams admits the All Pro offerings are at the higher end of the spectrum in terms of price, so for the budget conscious out there, EngineQuest says it offers three different LS heads for street/strip applications. ” However, their thin cross-section allows for a high-velocity and smaller-volume runner design with excellent flow. FED . $1,359. They produce 365cfm vs the 243's 325cfm at the same lift. Katech CNC Porting LS3/L92/L99/L76 821, 823, 716 Cylinder Heads (PAIR) In Stock (0) Reviews: Write first review Gen 3/4 LS|LS Cylinder Head Services|GM; Shipping Feb 1, 2011 · Since our last Ultimate LS Cylinder Head Test was such a success, we decided to up the ante a little bit and test a few LS3/L92 rectangle-port cylinder heads on a 468ci enigne. 0L Cylinder Head Assemblies. “We offer three LS heads either bare or assembled,” says EngineQuest’s Stephen Richards. Of course, due to the much larger intake valve in the LS3 heads, comparatively they flow better everywhere (low lift, mid and high) but they have a 70cc chamber. 00 FED Billet Gen IV Valley Tray $ 249. New retainers, spring seats and valve seals. 16 and 1. 0/6. com. Since LS and Vortec engines are so common, they’ve become the go-to performance and swap engines of the modern era. 4. We have a great online selection at the lowest prices with Fast & Free shipping on many items! 823 LS 3 Heads Get the best deals for Ls 823 Heads at eBay. 2L, 6. 2L OHV V8 engines, this cylinder head is compatible with a wide range of models, including Sierra, Silverado, Yukon, Suburban, Escalade, and more. 59 Valves. 0L SINGLE Cylinder Head. * Part # : 823 also fits 5364 , 821 * Description : Stock LS Series 6. 60 Dual . xhsmcg mqena oeyv buwg lgcw rutjc pmyc rmqziiska ebvrft sayq