The all new PRC LS3 As-Cast cylinder heads are now available for customers looking for the ultimate as-cast LS3 cylinder heads available. 660 Spring Kit w/ PAC Valve Springs & Titanium Retainers. If you are looking for great factory style replacement/upgraded LS3-style cylinder head, look no further than these fully CNC ported Brawler cylinder heads! Chevrolet LS3 250cc Intake 82cc Exhaust 57cc Chamber New Assembled Aluminum Cylinder Heads One Pair (2) of heads New springs, retainers and valve locks. Made from RMR cast aluminum alloy, along with the 15 degree valve angle it offers 280 cc intake port volume and 68 cc chamber volume. 00 CC Port, 62. 0-liter LS7 and C5R blocks can use any LS-series head. Despite FLOTEK 276cc LS3 Cylinder Heads LS3-500 Cylinder Head, Bare, 68cc Combustion Chamber, 276cc Intake Runner, 92cc Exhaust Runner, Aluminum, Chevy, LS, Each Part Number: FLK-LS3-500 This is a Set of Remanufactured OE Stock LS3, L92, 6. Condition: 2 - NEW Complete Assembled - Exceeds OEM Specifications. 0 out of 5 stars ( 1 ) LS3 Cylinder Head Assembly • Aluminum performance head • Fits any LS family engine with 4. Designed specifically for 6. The cc for the piston is entered as a positive number on a -cc Dish or Flat top piston and a negative number on a dome piston. These heads feature factory-correct intake manifold alignment slots—ensuring that the Jun 10, 2024 · Chevrolet Performance LSX-LS3 Cylinder Head. The 6. Requires 3. Jun 22, 2021 · The LS3 was run with a Holley HP management system and FAST injectors. Service Sold Per Set. 590 inches (exhaust). The FLOTEK LS3 has a 276cc intake runner, 92cc exhaust runner, and 68cc combustion chamber. AFR's 238 LS3 Enforcer Cylinder head feature our Permanent Mold “As-Cast” Technology surfaces on the intake runners, exhaust runners and combustion chambers that allows for extremely accurate and repeatable port location/performance. Now: $1,887. 260cc LS3 Cylinder Head. 590" solid stem exhaust valves • . solid stem exhaust valves, as well as valve springs, valve locks, spring retainers, and valve stem seals. Intake Valve Dia. (These might present an issue with piston relief areas, depending on valve lift used, not sure. 065 in × 3. See More Specifications | Check the Fit. ( 1 ) Estimated Ship Date: Monday 6/17/2024. 165" hollow stem intake, and 1. Engineered to be modified from stock to high performance with ease. 165 intake/1. 25 mm × 92 mm (4. AFR 12° MONGOOSE HEADS - LS3 - 260cc - 69cc CHAMBER - CNC PORTED - 6 BOLT - ASSEMBLED - AFR1840. 7 LS1 with moderate cams made over 605hp on pump gas. JEGS 80725 - Cylinder Head Work Stand. Free Shipping. Cylinder Head Finish: Natural. Once your usable cores have made their way to us, LME will refund the cost of the cores. CNC machined from OEM Castings. 25 pass! Our 281CC LS3 / L92 / L99 / LSA head was developed specifically for the stock displacement LS Jul 3, 2022 · The valves on LS3 heads are designed to be larger than those on stock LS heads to improve airflow, leading to increased power output. Darin said since this head wouldn't be any steeper than 14* then wouldn't be worth it or in other words he was saying no need for this head! This item is not sold as a pair, this is a single cylinder head. 590 in. Made from the highest grade aluminum. 2L LS3 L99 LSA LS9 L92 L9H L94. Cathedral Intake Ports. 020 in. DART MACHINERY. The cylinder heads accept all standard LS3 components and share each of the Feb 1, 2011 · Where the typical LS3 chambers measure 70 cc, the big-chamber, CNC-ported LS3 heads from Procomp featured chambers that checked in at a whopping 81 cc. Keeping in mind that the LS3 is already a relatively large port we have decided to offer our full Frankenstein Engine Dynamics M311 273cc LS3 Rectangle Cylinder Head-Complete Set. Exhaust Runner Volume: 87cc. Works with applications of 4” bore & larger Part Type: Cylinder Heads. Corvette & 2010 Camaro customers can now send in their heads to be ported! Stock Valve Weight. Standard valve sizes for LS3 heads include 2. They are available in cathedral port and rectangular port designs to match your GM LS Engine needs. Intake Port Shape: Rectangle. Material: Aluminum. Jun 6, 2018 · After running the same setup with the LS3 heads, the 6. 2L - V8. PRC's aftermarket casting LS3/L92/L99 cylinder heads come standard with the following options: NEW PRC 13-Degree Valve Angle LS3 Castings. 898 bore minimum Stock LS3 ports accommodate LS3-style intake manifolds and LS9/LSA blower assemblies. Min. 23 out of 5 stars ( 30 ) Find FLOTEK 276cc LS3 Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! FLOTEK 276cc LS3 cylinder heads feature as-cast high-flow intake runners that flow significantly better than the stock LS3 heads. 6 days ago · JEGS 210840 - MLS Cylinder Head Gasket for GM LS Engines [Bore: 4. ” Hardest of the Hardcore: LSx-DR – Part Number 19166979 Cylinder Head, Freedom, Aluminum, Assembled, 64 cc Chamber, 185 cc Intake Runner, Straight Plug, Chevy SB, Pair Part Number: PMX-2169 4. Add to cart. SKU: FED113004 Category: HEADS/PORTING SERVICE. Year Range: 07-17. This means all stock components will fit without modification. 260cc Runners For LS3/L99/L92 stroker engines needing a 380cfm+ cylinder head! May 28, 2024 · FLOTEK 276cc LS3 cylinder heads feature as-cast high-flow intake runners that flow significantly better than the stock LS3 heads. Sold Per Set. JEGS 210850 - Exhaust Header Gaskets for Chevy LS1/LS2/LS3/LS6. High performance premium cylinder heads and components for LS & LT applications. LPC Aluminum Cylinder Head, LS Block Chevy, 255cc Intake Runner, 72cc Combustion Chamber,11° Rectangular Port, Assembled. SKU: FF281. 25 pass! Our 281CC LS3 / L92 / L99 / LSA head was developed specifically for the stock displacement LS Fully CNC ported, 72cc chamber volume. exhaust valve combination. You could meet your HP goals with a bone stock LQ4 and a TQv2 no problem and still drive great. Part Type: Cylinder Head Application: Chevrolet/GM LS3 Cylinder Head Material: Aluminum Bare or Assembled: Bare Combustion Chamber . The cylinder heads will fit any LS engine with cylinder bores of 4. Texas Speed Brawler LS3 257cc CNC Rectangle Port Cylinder Heads. 750″ Deck Structure; OEM/Factory Style Water Crossover Ports; 7/16″ Stud Size For Main 10 Bolts MSRP: $ 2,084. 16/1. The reason for the cam is ls3 heads are very high flow, therefore a heavier-durable cam is needed. Features include 8mm bronze manganese guides, hardened valve seats, large spring seats, and multi-angle valve job. 00-inch bore of the LS2 enables it to use LS1/LS6 heads, as well as L92-style heads (including LS3, LS9, and LSA engines). 1. 0L LS3 L92 LQ4 Cylinder Heads, EQ Hybrid Performance New ASSEMBLED SET - Part #EQ-CH364XA. Was: 11030152. Titanium Retainers. The LS3 uses a rectangular shaped intake port that is a bit taller than the LS3's port. 000 in. FLOTEK 276cc LS3 Cylinder Heads LS3-500 Cylinder Head, Bare, 68cc Combustion Chamber, 276cc Intake Runner, 92cc Exhaust Runner, Aluminum, Chevy, LS, Each Part Number: FLK-LS3-500 May 30, 2024 · 5. Cylinder Head, Assembled, 68cc Combustion Chamber, 276cc Intake Runner, 92cc Exhaust Runner, Aluminum, Chevy, LS, Each. Pinit. 96 $ 2,949. Trick Flow GenX 255 cylinder heads are emissions-legal under CARB E. Out-of-the-box, bolt-on performance. Jan 13, 2017 · The Dart PRO1 LS 280 cc cylinder head retains stock valve angles, stock valve locations and stock accessory mounting holes to make installation easy. Jan 6, 2016 · The reason is simple: The more you squeeze the air and fuel mixture in the combustion chamber, the more power you can create. It has a single camshaft, which is similar to the LS6 camshaft but with 0. Set of two (2) FED Monster-Series M311 (LS3 11°) 273cc rectangle port cylinder heads. FED . PRC’s own casting of the LS3 head utilizes a 13-degree valve angle and revised runner shape to make a similar flowing intake runner with much less volume (and much more velocity). $8. Michigan Motorsports 11 Degree 260cc CNC Rectangle Port LS3 Heads. Estimated Ship Date: Jul 22, 2024 if ordered today. Reuse Stock Valves. Jul 9, 2012 · The chamber sizes varied from a low of 64 cc for the cathedral-port AFR 245s, 70 cc for the stock LS3 heads, and a high of 73 cc for the 317 heads. Cylinder Head, Bare, 68cc Combustion Chamber, 276cc Intake Runner, 92cc Exhaust Runner, Aluminum, Chevy, LS, Each. It was even better with 4. 236. The most tried and tested production cylinder head on the market is the GM LS3 head. SKU: 114044 Category: Advanced Porting Services Tag: ls3 advanced cylinder head porting services. 214. In addition, it has a combustion chamber volume of about 68. Oct 17, 2011 · The combination of a respectable cube’s tally and high-flow heads yield loads of untapped potential, evidenced by the fact that the LS3 produces 430 hp, despite a dinky 204/211-at-0. Warranty. Maximum competition, comp/modified drag racing, circle track, and heavy duty applications. The cam swap improved the power output of the LS3 from 503 hp and 497 lb-ft to 569 hp and 522 lb-ft. Product Description: All Precision Race Components (PRC) cylinder heads come fully CNC-ported and machined using state-of-the-art technology. Hollow Stem Valve Weight. or larger bore applications on up through 454 cu. 0L based GM trucks. 7 cc. The Right Combination For The Job. 2-liter engines (LS3, L92, etc. The AFR 238cc LS3 Enforcer is the first Enforcer casting with 100% AFR design. Precision cast from A356 aluminum. LS7: 70cc. Apr 15, 2022 · The LS engines with 799 heads are 5. These heads are 15 degree, which is the same as the stock cylinder heads Jul 9, 2012 · My cousin had an LQ4 with patriot ported 243 heads and an MS3 and it drove great behind a T56 with stock 3. Part Number: 555-514055. 00. 59 Valves PAIR. Intake Runner Volume (cc): 255cc. Combustion Chamber Volume (cc): 69. Part Number: FLK-1200HRAC505A. 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) Center Main Thrust Bearing. GM 6. Port design is optimised for flow and velocity. The 11cc increase in chamber volume dropped Find RHS Pro Action LS3 Rectangle Port Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! RHS Pro Action LS3 rectangle port cylinder heads are premium replacement heads that utilize the same architecture as factory. lift and are designed primarily for street and strip applications. The first step into the bedlam of Frankenstein power. $300 CORE CHARGE PER HEAD. The ports Part#: AHP-65269NPC. These heads fit any LS engine with cylinder bores of 4. 700 in. We recently updated our LS3 head porting program for a larger 281cc intake port volume – the same cylinder heads on GPI’s Ryan Steven’s record-setting 5th Gen Camaro during his 9. $3,095. 59 in. 10s but had no trouble with the 3. 000" and larger bore engines—the GenX® 255. Exhaust Port Shape: D-Port. The complete specs are 204°/211° intake/exhaust duration @ 0. Part Number: FLK-LS3-505. 17. 2L produced 826 hp at 6,700 rpm and 771 lb-ft of torque at 4,600 rpm. Features. As far as a list for other bolt on upgrades:Choice of exhaust system, performance spark plugs and plug wires, better quality distributor (complete set), cooling fan Oct 1, 2010 · The ported heads responded very well to the high lift supplied by the new cam profile. Additional information. Expedited Core Exchange - We will ship you a set of CNC ported heads fresh out of the machine and set up to your cam specs once the order is placed. ) can use any head except the LS7 and C5R, while the 7. 2L engines. Our fully CNC'd LS3 heads give you a stock size 2. It has a bore and stroke of 103. 3L and 4. Build to Order. 590 exhaust with an intake flow of 365cfm and an exhaust flow of 236cfm. The sophisticated architecture, cathedral-shaped port, and smaller combustion chamber work amazingly on these truck engines. For example, some aftermarket LS3 heads may Jan 12, 2022 · The LS3 cylinder head has 260-cc intake runners and 92-cc exhaust ports. 2L and 6. The XXTREME LS 240 small bore head will take your LS1, LS2, or LS3 to levels that fully CNC ported OEM heads can't achieve. Therefore, you will not be charged for the core exchange. 165 inches (intake) and 1. 06. 165 / 1. Combustion Chamber Volume: 68cc. ) Combustion chamber volume: LS3: 68. 367cfm @. Featuring A356 aluminum castings, titanium retainers and the highest quality components, throughout. The ported LS3/L92 heads featured sizable intake port volumes of 279 cc; while not much of an issue on our 468ci stroker, that might be a tad large for a small-displacement LS. Part Number: FLK-LS3-500. 0 cu in) engine, based on the LS3; the LS7 block was not used because of the higher cylinder pressures created by the supercharger requiring the thicker cylinder walls of the LS3. Upgrade your LS3 engine with our CNC Ported LS3 364/823 Style Cylinder Heads. 650 lift, the FLOTEK LS3 flow tested 44 CFM better than the stock LS3 heads. JEGS 514122K1 - LS Valvetrain Upgrade Kit. Cylinder Head Material: Aluminum. They are available fully assembled or as bare 2 days ago · AFR 260cc LS3 Mongoose cylinder heads are 100 percent 5-axis, CNC-ported, and feature titanium retainers, A356 aluminum castings, and Pac Racing springs. AFR 15° MONGOOSE HEADS - LS1 - 230cc - 65cc CHAMBER - CNC PORTED - 4 BOLT - ASSEMBLED - AFR-1660. 000 inches or larger. The new PRC as-cast intake port has been flow bench tested to flow 369 CFM & can support everything from smaller camshaft street engines all the 100% CNC'd 270 & 280cc GM 821 LS3, LSA, & LS9 Cylinder Head Package. PRC's stage LS3 and L92 Cylinder Heads come standard with the following options: NEW GM Cores. GM's new LS3 head represents a phenomenal leap in capacity over previous cathedral port castings. 0 & 6. 800". GenX 255 heads are available with standard and 6-bolt per cylinder mounting patterns. or larger. 5-axis CNC intake and exhaust port and combustion chamber machining. On identical engines, there is no comparison. Castings: 6 Bolt Head; 0. Dyno proven. 00 $ 2,999. It also features 2. Sep 21, 2015 · LS3, 250 cc. Description: CNC Ported LS3 364/823 Style Cyl Heads . 650 Springs 2. SKU: 11061080. CNC-Machined Combustion Chamber: Yes. Intake Runner Volume: 257cc. #D-747 for 2007-present GM vehicles with 6. intake and 1. 4 cc. Improved Piston-to-Valve Clearance For Extra Compression & Larger Camshafts. In back to back testing at . Complete Aluminum Cylinder Heads Chevy LS3 250cc 64cc . Bore w/59 cc Combustion Chambers 3166P parts at JEGS. The Chevrolet Performance Parts CNC-Ported LS3 cylinder heads are delivered fully assembled, with 2. 59 Stainless Steel performance. 0L Cylinder Head Assemblies. Engine Size: 6. High Quality Components: Black Nitride Stainless Steel Severe Duty Valves. $ 699. May 30, 2024 · 5. RHS Pro Action LS3 rectangle port cylinder heads are premium replacement heads that utilize the same architecture as factory. Your Choice Of Valves (Stock GM 106 Grams, Stainless Valve 122 Grams, Hollow-Stem Valve 91 Grams) Frankenstein M311 273cc LS3 Cylinder Heads Assembled (SET) $ 2,999. In theory, forcing air and fuel in as small a combustion chamber as possible (measured in volume) will yield maximum engine compression and horsepower. 25 inch more intake valve lift. Once you need to supply decent power to your sports car with an LS engine and push its performance to a new height, the 823 LS heads – also known as the L92 heads – are an ideal option. 9. 122. Exhaust Valve Dia. $ 3,500. These CARB certified heads require 4. 625 Lift. Product In Stock. LS7 PRO1 285cc CNC Cylinder Head – 1. Extending the performance range of the LSX platform are Chevrolet Performance's new, 6-bolt LSX cylinder heads. 700” Lift Valve Springs. 8L. WILL SHIP DIRECTLY FROM MANUFACTURER ESTIMATED SHIP DATE: TBD. 000" bore or larger • 2. 99. MSRP Mar 30, 2017 · However, the larger 4. PERFORMANCE APPLICATION ONLY – ASSEMBLED. lift and are Jun 9, 2018 · C6 Tech/Performance - Tony Mamo MMS 260 cc LS3 Heads with spin monster cam result - Wanting to see how far I could get with just a NA vette while keeping as much drivability as possible. JEGS 514055. 050 in, 0. The ports are in the stock location, so no special valvetrain parts or rocker arms are required. Aug 27, 2012 · Finally, there is a second casting, also based on the LS3 cylinder head, but with a smaller combustion chamber and smaller LS1 valves. ] $38. $990. Cylinder Head Specifications. Quantity. 100% Fully CNC Ported 260cc Intake, 100cc Exhaust & 69cc Chambers Virgin A356 Aluminum Castings 6 Bolt Head Casting with Extra Strength Decks Advanced 11° Valve Angle for Maximum Flow & PTV Clearance 2. ): 4. 16. Find Trick Flow® GenX® 255 Cylinder Heads for GM LS3 and get Trick Flow Makes Serious Horsepower! Trick Flow engineers combined the best features of factory GM LS3 and LS7 cylinder heads with Trick Flow’s own unique brand of race-winning engineering and technology to create the ultimate square port LS cylinder head for 4. Heads are complete and assembled. hollow stem intake valves and 1. LS3 Cylinder Heads - Assembled Material: Aluminum CNC Machined Intake Runner: Yes CNC Machined Exhaust Runner: Yes CNC Machined Combustion Chamber: Yes Minimum Bore Size (in. 700 Lift Dual Spring Kit. In as-cast for this head moves only ~310 cfm at a whopping 260 cc port volume. The cylinder head ports and chambers are carefully redesigned to produce the best flow characteristics that will provide improved horsepower & torque. –. 106. Fits 2007-Newer Rectangle Port LS-Based Engines 6. Although the heads were initially made for C5 Corvettes, they later found their use in engines like the truck-spec LQ9 and LQ4. These fully CNC machined cylinder heads from Michigan Motorsports feature a revised 11 Degree valve angle for unmatched performance compared to standard 15 degree LS heads. Fits 1997-2013 LS-Based Engines with Rectangle Port Intake Manifolds LS3 L99 L76 L77 L92 L96 LSA. 2 L; 376. The 243 heads are cast out of aluminum alloy Posted on: March 14th, 2019 by libertyperformance. 610” | LSA112+4 cam. The 799 LS heads boost horsepower up to 25 hp. 650 lift camshaft Intake CC = 250cc, Exhaust CC = 82cc, Combustion CC = 57cc, Intake Valve Size - 2. This item is not sold as a pair, this is a single cylinder head. Our small rectangle is a beast! 5. 622 in). Back to back dyno tests show well known fully CNC ported heads fall 70hp short of this 240cc as cast monster. 295 Assembled – Jesel Rocker Bar Machining Pro1 Chevrolet LS Gen III Head – 205. 525 inch intake/exhaust lift, and a 117° LSA. This head is “designed to have the intake configuration of a LS3 head, but fit the smaller bore blocks of the LS1 and LS6 engines. 590 valve combination, and accept all standard LS3 components. 050 factory cam. O. Obviously, the difference in chamber volume Home. Both heads utilize a 15° valve angle, a 71 cc combustion chamber, and a 2. The smaller combustion chamber with a higher compression ratio offers increased power output. It put down around 450 at the wheels too. 2 engines the LS3 heads have been proven to work extremely well in all N/A, Turbo & Supercharged engine applications. Heads come with GM Valves included in price. 240 Deck Height. 230. 618”/. Write the First Review. $505. FLOTEK 276cc LS3 Cylinder Heads. Cylinder Head, 200cc, Hydraulic Roller, Angled, Aluminum, Assembled, Chevrolet, Small Block Gen I, 305/307/327/350, Each. Casting Number: 821. CNC machined valve seats. Track tested. This model was first introduced in 2008, and it is set up in the Corvette C6, which belongs to the LS3 of the General Motors FLOTEK 276cc LS3 Cylinder Heads LS3-505. Manufacturer: Allied Motor Parts. AFR’s 260cc LS3 “Mongoose” heads feature 100% CNC ported intake, exhaust and chambers using our advanced engineering and flow techniques to produce the ultimate Rectangle Port head available today. Current GM LS3 Cylinder Head core value is $495. Drop Ship. We design and manufacture a large line of cylinder heads for LS1, LS3, LS7, LS9, LT1, LT2 & LT4 engine platforms. Designed to use most LS3-style intake manifolds and components. 20" titanium intake, 1. 2L, 6. The new FLOTEK LS3 head features as-cast high flow intake runners that flow significantly better than the stock LS3 heads. O-Ringed Exhaust Ports (Hi-Temp Silicone O-rings Included) 2″ Headers Recommended. Add to Cart. The gains offered by the high-flow LS3 heads continued under boost, but Complete and Assembled – Frankenstein Engine Dynamics OEM and Aftermarket Cylinder Head Performance Porting. Your horsepower-building potential is nearly unlimited with LSX The Gen IV LS9 is a supercharged 6,162 cc (6. Obviously, the difference in chamber volume FLOTEK High Performance Cylinder Heads 1712 Read Street, Evansville, IN 47710 Phone: 1-800-270-0095 I Fax: 812-421-0983 Brodix BP BR 3 Chevy LS cylinder heads are 100 percent CNC-ported models, featuring a 280cc intake which flows over 363 cfm! These all-new heads utilize a 15 degree valve angle, a 71cc combustion chamber—and a 2. $41. 16 Stainless Steel performance exhaust Valve Size - 1. 000 inch bore or larger. TSP . Sep 28, 2015 · Despite numerous differences the Gen III LS Engine and Gen IV LS Engine cylinder blocks share a lot of the same traits. This seems very confusing but it is because even though it is a -cc on the piston, those same cc's are gained in cylinder volume. 00 CC Chamber. 165 in. Get the Best Performance with ProMaxx Performance XXTREME Assembled 260 cc Rectangle Port Cylinder Heads for LS3 w/4 in. Recommended for engines with 4. Casting Type *. I have a 2008 ls3 m6 corvette with now 118k miles. 551/. Starting with a new aluminum casting these heads are fully assembled with all new components including intake valves, exhaust valves, valve springs, retainers, guides, and seats. $ 27. Many are capable of flowing more than 400 cfm and their 6-bolts-per-cylinder clamping design gives them bomb-proof strength. 63. Cylinder Head, Bare, 68cc Combustion Chamber, 276cc Intake Runner, 92cc Exhaust Runner, Aluminum, Chevy, LS, Each Part Number: FLK-LS3-500 5. Tons of R&D on both the flow bench & engine dyno has created one of the leading LS3/ cylinder heads available! The PRC LS3 cylinder heads porting for customers with existing LS-3 cylinder heads. Holds . Fully CNC ported, 72cc chamber volume. 64. I ended talking to Darin Morgan @ Reher-Morrison about porting these heads and I asked him about softening chambers on this head. These heads are 15 degree, which is the same as the stock cylinder heads—no special pistons are required. Your Price: $ 2,040. With stock heads, the modified LS3 combination produced 552 hp at 6,400 rpm and 513 ft-lbs of torque at 5,000 rpm. AFR’s 260cc LS3 "Mongoose" heads feature 100% CNC ported intake, exhaust and chambers using our advanced engineering and flow techniques to produce the ultimate Rectangle Port head available today. Meanwhile, the exhaust runner, which is very restrictive on the stock casting, is uncorked considerably. engines operating at or below 7,000 rpm. Retain that performance and save yourself time and worry by replacing your tired cylinder heads with FLOTEK 276cc LS3 Cylinder Heads LS3-500. in. The BR 3 is the unported version designed for outstanding “out-of-the-box” performance. However, it’s not uncommon for LS3 heads to feature even larger valves. 4. 2L based Chevrolet Corvettes and various 2007-2008 L92 L76 6. Show all items you need. * Part # : 5364 also fits 823 , 821 * Specs : Combustion Chamber Volume: 70cc 187. Cylinder Head Style: Bare. Hence the positive number in the calculator. If you are looking for more power and better performance from you LS or LT engine, look no further. here is the list of parts that were installed this go around. 57. 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. Not Yet Reviewed. MMs 260cc Ls3 heads Feb 1, 2018 · Ls3 heads and Tick Street Heat Stg 2 229/244 | . 165” Intake Valve 21-4N Alloy & 1. There are a number of ways to accomplish the task. 42 gears. That includes porting and smoothing out of the combustion chamber on our 5-axis, a CNC valve job on our Newen Contour and getting milled to perfect flatness The BP BR 3 is a 100% CNC ported head that features a 280 cc intake port that flows over 363 cfm. Cylinder Head Bolt Style: Torque to Yield (TTY) Cylinder Head Bolt Feb 17, 2010 · LS7: 2. The LQ4 and LQ9 had 6 cc larger combustion chambers. May 29, 2023 · Unlike the L92 on which it was based, the LS3 does not use variable valve timing. 165-inch hollow-stem intake valves and 1. Mar 13, 2018 · I've been researching chamber softening as well as other things on a LS3 head. Smaller Than Stock Intake Port Volume For Improved Port Velocity. engines operating at or below 7,000 rpm—and flow over 380 cfm at 0. Head P/N12629063 assembled with the following: Dart Pro 1 LS3 Gen III Aluminum Cylinder Head 11030152 - 280cc, Assembled. Dart Pro1 LS 12 Deg CNC (LS7 Compatible) Gen III Cylinder Heads. After installation of the TFS Gen X 255 heads, the power numbers jumped to 571 hp at 6,500 rpm and 525 ft-lbs of torque at 5,200 rpm. AFR 260cc LS3 Mongoose cylinder heads are 100 percent 5-axis, CNC-ported, and A356 aluminum castings. Custom PAC . PRICE SHOWN IS PER SET BARE. 2. UPC: 842645108983. These heads feature factory-correct intake manifold alignment slots—ensuring that the intake manifold ports line up properly with the cylinder head ports The PRC aftermarket casting LS3 cylinder heads are available in 2 different configurations: 255cc Runners for max effort stock cube LS2/LS3/L99/L92 engines looking for a 370cfm cylinder head that can be aggressively milled & still keep better than stock p/v. Items 1 to 12 of 40 total. The ports CLEAR ALL. 273cc intake port, 112cc exhaust port and 11° valve angle. 61" sodium filled exhaust. Jun 29, 2023 · Overview About 823 LS Heads. 60” Exhaust Valve 23-8N Super Alloy 23-8N Alloy has the same high temp c Lingenfelter offers a CNC ported version of the L92/LS3 aluminum cylinder head used on 2008 production 6. FLOTEK High Performance Cylinder Heads 1712 Read Street, Evansville, IN 47710 Phone: 1-800-270-0095 I Fax: 812-421-0983 Jun 3, 2022 · The 243 heads came on the powerful LS6 engines from 2001 to 2006. 000 Bolts Per Cylinder: 6 Assembled: Yes Valve Angle (°): 11 Intake Runner Volume (cc): 280 Exhaust Runner Volume (cc): 108 Chamber Volume (cc): 68 Intake Valve (in FLOTEK 200cc Small Block Chevy Cylinder Heads 1200-HRAC-505A. 1013. Stainless Valve Weight. $679. Call for Availability. 59-inch solid-stem exhaust valves. The power output of the 468 jumped from 692 hp at 6,500 rpm with stock L92 heads to 720 hp at 6,700 rpm with the CNC-ported versions. Description. 42s. Product Line: Trick Flow® GenX® 255 Cylinder Heads for GM LS3. 95. They flow over 380 cfm at 0. Jan 12, 2022 · The LS3 cylinder head has 260-cc intake runners and 92-cc exhaust ports. 550" max valve lift • As-cast L92 style intake ports • D-shaped exhaust ports • As-cast combustion chambers . LS6 was also used in some Camaros and Pontiac GTOs. pr lk xk qr lu ab qo ac yr pn