Gmpp cnc ls3 heads dyno. I also dumped my stock heads in favor of GMPP CNC LS3 heads that I had the valves back cut and the heads milled . Dyno results produce 700 HP plus on pump gas. 7 Rockers GMPP LS3 CNC heads Aeromotive A1000 fuel pump FAST fuel rails FAST FPR FIC 1000cc injectors Yank SS2800 Camaro trans pan/filterEarl's trans cooler RX catch can 736 RWHP/642 LBFT 91oct 15psi 730 RWHP/621 LBFT E85 13psi 695 RWHP/603 LBFT E85 11psi Save Reply Quote Like Sort by Oldest first M matthewo 4860 posts · Joined If you are looking for a great replacement/upgraded LS3-style cylinder head, look no further than these fully CNC ported Brawler cylinder heads! These are inspired from a factory GM LS3 cylinder head casting but with our tried and true CNC porting program. Current Mod list Halltech MF103 TSP 1 7/8th LTH 3 inch catless X-pipe Vmax Ported Throttle Body Dyno Tuned Plans for this spring Spinmonster 230/234 . Jul 1, 2018 · We recently dyno'd a stock cube LS3 with Fitech controlling it on 91 pump gas. Our 6. Any thoughts? My relevant mods are: new long block consisting of a LS2 stock bottom new LS3 0821 heads milled . 80 Dec 15, 2014 · Save Share Reply Quote Like D danfigg 1,172 posts · Joined 2013 #9 ·Dec 18, 2014 Flow figures Chevy performance CNC Ported LS3 Heads: Valve Lift (Inches) Intake Flow (CFM) Exhaust Flow (CFM) . 050 with . Oct 1, 2010 · After running the motor in stock trim, off came the stock LS3 heads to make room for the CNC-ported L92 heads. Lingenfelter LS3 CNC ported complete cylinder heads are sold with light-weight hollow stem intake valves and heavy duty inconel exhaust valves that designed to be durable even under extreme high . 550 348 249 . Item not for sale in California Add to Cart View Details L92 - LS3 CYLINDER HEAD CNC PORTING $750. Aug 9, 2016 · Chevrolet Performance LS9 CNC-ported cylinder heads represent a new benchmark in factory engineering high performance, blending the strength and durability of the production LS9 cylinder head castings with the airflow enhancements of precision CNC porting. Part Number: L150015307 $1,495. 041 head gasket - stock LS3 heads - GMPP/Caddy Race Lifters - BTR Springs & Trend 3/8 Pushrods - Brand New OEM LS3 Cylinder Head Assembly • Aluminum performance head • Fits any LS family engine with 4. 030. This combo made 470whp/470wtq STD smoothing 5 on a dynojet. 060-inch bore adapter Apr 14, 2020 · C6 Tech/Performance - My 08 LS3 M6 Ported Heads/Spinmonster Cam build/dyno thread - Hello All, This plan started last fall when I decided to start making a list of parts/direction I wanted to go with the car and I am super excited its finally almost done. Many of our assembled heads use premium machining and materials, including CNC finishing and porting, along with lightweight, hollow-stem valves, sodium-filled exhaust valves and – on some heads – lightweight titanium intake valves. 0 as an option on their stock LS3 / L99 short block. Dan's 2009 G8 GT built and tuned by Livernoise Motorsports and Maximum Performance. 350 Pushrods BTR TRUNNION KIT Johnson 2110 Lifters C5R Timing chain ARP bolts GM LS9 Headgaskets Powerbond Harmonic Balancer PB1117SS Along with all the necessary gaskets, etc. 660 springs/titanium retainers Texas Speed Cam ground to 230/234 . 660 Dual Springs, Titanium Retainers BTR 5/16's HOW MUCH HP IS A CAM SWAP WORTH ON AN LS3? HOW MUCH HP IS A CAM SWAP WORTH WITH STOCK LS3 HEADS? HOW MUCH HP IS A CAM SWAP WORTH WITH PORTED LS3 HEADS? HOW MUCH HP ARE THE AFR LS3 CAMS WORTH? TOP Mar 21, 2012 · What I measured when CC ing: Intake Port: 276. Oct 9, 2013 · C6 Tech/Performance LS2, LS3, LS7, LS9 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace Mar 26, 2013 · FWIW the GMPP LS3 heads I was referring to are the 4 bolt ported factory castings. This kit pair can increase the power of the LS3 engine in your Corvette to 470-plus hp and 440 lb-ft of torque. From there they head for further testing on the dyno to verify CFM and airflow numbers and efficiency. Many hours of R&D have gone into the development of this powerful LS3 CNC program. Nov 22, 2010 · C6 Tech/Performance - Heads, cam, headers on LS3, make 500HP? - And that is, with a streetable cam, for a daily driver, an A6, that sees occasional work on the road course. 200" 154 cfm 115 CFM . 600 355 253 . 2L LS3, and they got 10 hp on a stock LS3 and 30 hp on a stroker motor. Jul 13, 2011 · The important take away here is that the GMPP LS3 CNC heads with PN 88958758 are the best bang for the buck out of the box head that can be run on 6. 000" and larger bore engines—the GenX® 255. 0L based GM trucks. AFR LS3 Enforcer 238cc Cylinder Heads As Cast AFR's 238 LS3 Enforcer Cylinder heads feature Permanent Mold “As-Cast” Technology surfaces on the intake runners, exhaust runners and combustion chambers that allows for extremely accurate and Mar 8, 2017 · Are GMPP CNC LS9 heads worth it? Apparently my engine has to be torn down to figure out whats wrong with it, figured I might try to have them swap on some LS9 heads & cam while they are already off the car. Rated 5. 070" bore. 200 178 137 . It made 595 with . The milling certainly doesn't help but I wouldn't be too afraid. I apologize upfront about how long it is but I wanted to do my best to highlight the trials and tribulations of this build, the results and how we SMALL BLOCK FORD SMALL BLOCK CHEVY BIG BLOCK HEADS LS3 HEADS PARTS APPAREL & GIFTS Featured Products Lingenfelter in house CNC ported GM LS3 aluminum cylinder heads can be used on 2008-2012 production 6. 66" GPTuning 2. 2L and 6. The most tried and tested production cylinder head on the market is the GM LS3 head. The port and chambers are carefully designed to provide the best combination of high flow capabilities across the entire valve lift range. First start up idle May 31, 2016 · GMPP CNC cylinder heads Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Apr 8, 2016 · Ive search the web alot to find out how true ported heads will effect and improve hp on our engines. 000" bore or larger 72cc combustion chamber, 280cc intake volume, 93cc exhaust Fully assembled Intake Flow . 0 & 6. 626 112+2 LSA Ported L76 Intake, Rails and Injectors BTR . 350 Pushrods BTR TRUNNION KIT Johnson 2110 Lifters C5R Timing chain ARP bolts GM LS9 Head gaskets Powerbond Harmonic Balancer PB1117SS Along with all the necessary gaskets, etc. 00 Quick View Lingenfelter CNC Ported LS9 C6 ZR1 Corvette Cylinder Head Part Number: L150026109 $2,275. 600/. Retain New GMP LS3/L92 CNC Ported cylinder heads CNC Ported, intake, exhaust and combustion chamber 2. Our small rectangle is a beast! 5. 100 - 75 cfm / CNC Ported 78 cfm 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. I have used them on engines making over 1K whp at 20 psi without issue and they make a great budget head. Dec 28, 2018 · The latest GM CNC program reportedly produces better flow results than most of the big name vendors that sell their CNC ported LS3 castings for hundreds of dollars more. Good tune as well. 898 bore minimum The Lingenfelter CNC porting procedure is a computer controlled machining operation that duplicates details from a finished Lingenfelter hand ported cylinder head. The factory Quick View LS9 CNC-Ported Cylinder Head Assembly w/LS3 Valves $1,253. 300 - CNC 2009 G8 GT with American Racing headers 1-3/4", ARH high flow cats and x-pipe, stock axle backs, Livernois Stage 1C Cam, GMPP LS3 CNC Ported heads, SLP underdive crank pulley, Dyno tuned by Dart's PRO1 LS Cylinder Heads are meticulously engineered for GM LS series engines. Nov 24, 2015 · C6 Tech/Performance - Heads And Cam Stock Block LS3 Dyno Results. Backstory: The LS3 Aluminum Cylinder Heads are stock replacement LS3/L92 heads manufactured from aluminum alloy and are available as bare castings to add your own components or fully assembled with intake and exhaust valves, valve stem seals, spring retainers, valve springs and valve locks. Hopefully I can get it done this weekend, weather permitting. The XXTREME LS 260 is the big boy on the block for as-cast LS Head technology. The heads feature fully CNC Competition Ported runners with a premium high resolution surface finish for maximum airflow Nov 11, 2014 · 09 CTS-V Sedan Manual Thunder Gray Recaro: JE Pistons, Oliver Rods, GMPP CNC heads, LS9 CAM, Heartbeat 2300 Magnuson Supercharger, 1000 FIC injectors, 10" lower, airraid intake, HPT. These 220ish/232ish 111-113 cams seem very popular Aug 31, 2015 · The results of this test clearly illustrate that power output of the motor is NOT determined by the flow rate of the heads. As we have come to expect of the LS3/L92 heads, the exhaust flow lagged behind the intake significantly at 226 cfm. Aug 2, 2017 · Today I took my car to Slowhawk Performance with the mods in my sig. 605/. 300 237 176 . We test injection timing changes on the dyno to Product Description GM Complete LS3 Port Cylinder Heads | 12675871 When it comes to LS Performance, Who knows the industry better than GM Performance. Jan 27, 2020 · GM CNC ported Heads from Submit racing 08 LS3 M6 NPP car. 600 lift. A few pics of the install. Are additional services worth the $300 upcharge? Nov 3, 2016 · SLP Underdrive pulley25% 3. 100 - CNC Ported 78 cfm . Requires 4″ bore minimum and LS3 intake rocker. 165/1. Mostly head/cam combos. 201, 211, and 242 for stock LS1, LS6, and GMPP CNC-ported LS6 heads respectively. 00 Quick View Lingenfelter CNC Ported LS3 L92 Cylinder Heads - Pair Part Number: L92CNC-PAIR $1,495. 615 . 2L with GMPP CNC Heads and a BTR 225 Camshaft. The Lingenfelter CNC porting procedure is a computer controlled machining operation that duplicates exact details from a finished Lingenfelter hand ported cylinder head. 0 inches you will shroud the intake valve a little Oct 14, 2025 · We have (2) options when purchasing the GPI Ported LS3/L99/LSA Cylinder Heads. 5cc Cam Motion 226/232 . Dyno at 442 hp 413tq. 86 Add to cart Nov 19, 2011 · Yella Terra 1. From a flow rate standpoint, the stock heads offered 306 cfm while ported heads stepped things up with 338 cfm Mar 23, 2015 · Figured I would start a build thread for my swap. GMPP LS3 heads Jump to Latest 15K views 12 replies 6 participants last post by VVVROOMTX Oct 20, 2015 VVVROOMTX Discussion starter Jun 23, 2013 · Gmpp cnc ls3 heads Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Dec 4, 2012 · I was doing some reading and the it seems the WCCH heads as well as the MAST heads are quite popular. 5 cam, GMPP CNC LS3 heads, ARH 2" headers w/Xpipe into factory mufflers, ZL1 Lid w/reinforced brick and 3/4" lines, Varimax pump, C&R Racing HX, ID 1050x injectors, Airaid w/green filter, Fasterproms 1. I want to keep that kind of cross country or city traffic smooth driving manners, with just a little idle lope and a hair better hp bump than the LS7 Cam. 100 74 89 . This Chevrolet Performance LS9 Cylinder Head is the same one used to produce the impressive ZR-1 Corvette LS9 Engine! This limited production head features the same strength and durability as the production head with the added airflow enhancements of precision CNC porting. Says +40 hp. 165 intake valve and 1. The Ported BR7 Brodix Heads they used flowed insane like 500ish intake at . Patrick G spec low lash solid roller E85 Factory LS3 intake and throttle body. Finished cylinder heads are sent to the CNC department where the heads will be CNC ported and verified. Sep 18, 2015 · Is it worth porting a stock LS3 intake? Does anything stand out on the dyno graph? I have seen LS3 CNC heads from GM for a reasonable price. 200 - CNC Ported 163 cfm . There are better heads out there for more money but I do not feel the LSX-LS3 is one of them unless you are running a 6 bolt block, then it makes sense, but I would still port them. 00 out of 5 From: $1,195. Basically I changed cams from a 215/231 . 030" taken off the heads, CNC porting done by Mission Critical and a 240/243, . Oct 7, 2009 · PRC CNC Ported LS3 Heads Going on the Engine Dyno Today!! Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Many hours of R&D have gone into the development of our incredible LS3 CNC program. 165" hollow stem intake, and 1. 550" max valve lift • As-cast L92 style intake ports • As-cast combustion chambers Apr 14, 2020 · GMPP CNC Ported LS3 Heads w/BTR . 500 333 244 . 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. GMPP CNC Ported LS3 Heads w/BTR . 590" solid stem exhaust valves • . hotrod. 3 torque true an Feb 1, 2004 · The AFR ports measure 205 cc's vs. Jun 16, 2017 · Page 47- *Official* LS3 Dyno Thread Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons The Precision Race Components 265cc and 285cc LS7 cylinder heads are the pinnacle in high horsepower LS-based cylinder head performance for your LS7/LSx engine! Flowing up to 54 cfm intake and 37 cfm exhaust more than the factory LS7 CNC ported cylinder heads, you can achieve 393 cfm with our 265cc and 407 cfm with our 285cc cylinder heads for your street-driven vehicle! The 265cc cylinder Feb 3, 2013 · Our baseline test used stock, as-cast heads that we removed from an LS3 crate engine, though these heads are also available from GM Performance Parts, and they are the most affordable heads we tested. My car is a 08 3LT M6 NPP car with basic bolt ons. 165" hollow stem intake valve 1. TURBO LS PORTED HEAD TEST. 629/. Though considerably down in flow compared with the aftermarket heads, the flow is a significant step up from either traditional small-block or even the earlier LS1 castings with a peak intake Mar 12, 2017 · I'm looking at the GM LS3 power up kit for kind of a base line. In fact, many professional builders use our heads as straight bolt-ons, with no further machining. 604/. 650″ lift spring […] 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. 025, springs upgraded, stock GM head In today's video, I dyno tune a 2015 Silverado that has been engine swapped to a built and forged 6. 2 engines the LS3 heads have been proven to work extremely well in all N/A, Turbo & Supercharged engine applications. Apr 10, 2018 · If you want a little more out of your LS3 engine, meet this dynamic duo of CNC-ported heads and high-lift camshaft. Jun 29, 2011 · To illustrate the gains offered by both head and cam swaps, we ran the GMPP LS3 crate motor on the engine dyno in stock trim, then after the installation of a set of GMPP CNC LS3/L92 heads LS3/L92 Cylinder Head Porting Service – Customer Supplied Heads Transform your GM LS3/L92 cylinder heads into high-performance powerhouses with our professional porting service. More on the details and photos only in High Performance Pontiac Feb 1, 2021 · I made 850 rwhp thru an unlocked 4L80E so probably 1000 crank on the GMPP CNC LS3 heads - unmilled, arp studs, and LS9 gaskets. GMPP CNC LS3 heads, Livernoise 2C cam, Livernoise spring kit, Melling 102 Select Your Vehicle Home → Heads → Aftermarket Heads Aftermarket Heads Sort By: Page Size: Sep 25, 2020 · PN: TEA-GML921-CUSTOM GM L-92, L-76, or LS-3 engines Bolt on 25-30 horsepower to your L-92, L-76, or LS-3 engine! We take the already good factory heads and incorporate our CNC port program and custom 5 angle valve job to make a very good factory head perform great. Oct 23, 2012 · Pile: Lt1z (GP Tuning) deluxe 2. Therefore, each head comes standard with many features usually reserved for high end race engines. With stout flow numbers and an efficient port shape, the LME CNC ported LS3 offering is truly bolt on performance. Beside shipping with BTR springs, they offer Valve blending ($100) and chamber softening ($200). Aug 31, 2017 · I went with the GMPP CNC heads from Ace, milled . 035 and with back cut intake valves. FAQ Video Gallery Click on image to zoom Katech CNC Porting LS3/L92/L99/L76 821, 823, 716 Cylinder Heads (PAIR) In Stock (0) Reviews: Write first review New It's no secret that CNC Porting the GM LS3 Cylinder Head is the best way to maximize efficiency & flow from your cylinder head. com, the official website for Hot Rod Magazine. so they are arguably the best bang for the buck out there. Highest priority quiet valve train, rock solid reliability. 6 lower, Tony Mamo LS7 TB, ported/shimmed GM oil pump Reply Like 41 - 46 of 46 Posts 1 2 3 Mar 23, 2015 · Figured I would start a build thread for my swap. 610 112+4 - . Keep us updated with it as you move forward. 700 363 258 PRC LS3/L93 CNC ported heads: Lift Intake Flow Exhaust Flow . Considering that even the best thousand+ dollar each cathedral heads are only comparable to the $756 CNC ported LS3 heads from GMPP, it doesn't make any sense to use cathedral port heads for any build on an engine with a 4 inch or larger bore. I asked BTR for details, which was described as sanding/dremel/ out the CNC machine roughness to eliminate areas that would heat leading to preignition points. After porting, they have maximum intake flow of 330 cfm, and the exhaust ports move 201 cfm, both at 0. Back to back dyno tests show well known fully CNC ported heads fall 70hp short of this 240cc as cast monster. Though a GM Performance Parts dealer, Scoggin-Dickey Performance Center offers its own CNC-ported heads, and they offered slightly more performance than the GMPP heads. " Apr 16, 2020 · Now the parts list for install. Nov 26, 2009 · The heads are GM Performance Parts L92 CNC-ported (PN 88958698) castings. Both sets of L92 heads were tested on JGM's SuperFlow 600 flow bench with a 4. 650 lift Fits any LS family engine with 4. 4 cc Exhaust Port: 91 cc Combustion Chamber: 70. 590" solid stem exhaust valves Pac Springs good for . I also went with the Rick C Airram intake, an LS7 MAF in a Spectre housing Jun 19, 2017 · K-1 Crank,Compstar rods Same cam GMPP CNC'd LS3's Vic Jr touched up still gotta get headers and carb,,,Brian Tooley recommended 2" headers for my combo but you made some killer power with them man that's awesome! I was hoping for 625-650 HP so maybe I'll be close. 600-inch lift and Jun 22, 2018 · Considering going with BTR LS3 GMPP CNC heads. 7 LS1 with moderate cams made over 605hp on pump gas. Oct 26, 2025 · 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. The studs and LS9 gaskets are a must though. The port work brings the intake runner volume from 257 to 284cc. I would run milled heads to 850-900 rwhp with a fair amount of confidence. 626/. That being said at only 4. GMPP sells the CNC-ported L92 heads with stock valvesprings. Dec 1, 2010 · We test 11 different Chevrolet LS cylinder heads to see which one flows the most and produces the most hp and torque. These heads can be used to replace worn or damaged units on your LS3 engine or as a performance upgrade on any LS Lingenfelter #243 casting LS6, LS2 cylinder heads are precision CNC machined in house to insure that exact tolerances are maintained. 300" 223 CFM 170 Porting service for LS3 821 / 823 aluminum cylinder heads, customer supplied bare castings CNC-Motorsports Porting / Machining Service includes CNC Porting, intake, exhaust and combustion chamber Porting program and valve job are designed for 2. Our PRO1 series offers a variety of options to suit different performance requirements. May 1, 2009 · Here in part 2 of 2, we dyno test Texas Speed's 418ci L92/LS3-based engine. Porting Service: - Send your heads to us to be ported, or - Select one of the Cylinder Head Purchase options below for us to port a replacement set of heads for you. 2L (376-inch) LS3 crate motor from Gandrud Chevrolet with a set of CNC-ported LS3 heads. We also include our dual . 38"/8. 590 exhaust valve size 72cc combustion chamber, 280cc intake volume, 93cc exhaust Intake Flow . 400 302 228 . 604 lift and 112 LSA. Preparing for the DoD delete build. 5cc. 5 intake, GMPP CNC LS3 heads, and I haven't researched the cam enough to pic one, but will get recommendations when the time comes. 660 Dual Springs, Titanium Retainers BTR 5/16's The LQ4 has GMPP CNC ported LS3 heads part number 88958758 using a stock LS3 intake, fuel rails and injectors with a 92mm cable operated throttle body which does open 100% by gas pedal and a howards 190295-12 camshaft which is 218/224 duration @ . Designed specifically for 6. When I researched this about the only back to back dyno was from a magazine, on a 6. Only at www. 5 cam kit, GMPP CNC LS3 heads, ATI/Lingenfelter 8. 600 114+2 BTR 7. Mar 12, 2024 · Below is a dyno comparison of our 11° 260cc CNC cylinder heads vs a competitors 12° CNC 260cc cylinder heads. 575 118+4 to the Rick C. 5 whp and 575. Requires 3. 600 114+2 Cam BTR Springs/Pushrods Johnson 2100 Lifters Texas Speed Ported LS3 heads Looking to make between 500-530 whp and 450+ wtq Mar 30, 2013 · Hi. Nov 12, 2009 · The GMPP CNC-ported heads come with a 70cc combustion chamber and stock 2. 2L motors. That includes porting on our 5-axis, a CNC valve job on our Newen Contour and getting milled to perfect flatness on our Berco. low lift Little Lunati. HOW MUCH ARE PORTED HEADS WORTH ON AN LS3, 408 STROKER OR TURBO 4. I wanted to upgrade my intake valves, which would also require new seals, and the price of the CNC heads at $1200 just made sense to me. The test engine was a mild 11. Oct 6, 2019 · C6 Tech/Performance - C6 LS3 Project w/ Mamo Motorsports H/C (Dyno results included) - The purpose of this thread is to share my LS3 results and experience with Tony Mamo. 00 out of 5 $ 969. 610 cam with a 113 LSA. By combining our CNC Ported LS3 heads with the right camshaft & engine engine combination you have a recipe for success. 00 #LMEL92-LS3BARECNC Nov 2, 2017 · No, the Cathederal port heads are tinker toys compared to the LS3 heads. 8 gal expansion tank, Remote Tuned by Ben Charles Dec 14, 2024 · C6 Tech/Performance - Cammed LS3 - Looking to add ported heads - I've got a 2010 Grand Sport that currently has the following mods. headed to dyno after break-in. 2L based Chevrolet Corvettes and various 2007-2012 L92 L76 6. Found more ls3 forums and camaros with this info but alot to most of these forum posts were not just heads. 00 Select options Cylinder Heads GM Performance – NEW OEM LS3 Cylinder Head (12675871) Rated 5. Developed by Chevrolet Performance engineers as a direct replacement for the factory-installed heads and camshaft (tuning required), with 276 cc intake runners and 2. While I was pricing and comparing flow numbers I stumbled across GMPP CNC Ported LS3 heads. 0L has a smaller bore, so we would only get less from any possible valve shrouding. 8 gal expansion tank, Remote Tuned by Ben Charles The all-new PRC aftermarket casting LS3 cylinder heads are designed to flow considerably more than a gm ported casting while keeping the port sizes smaller for improved port velocity. 4 cc Actual Flow Numbers for the GMPP CNC ported LS3 heads F lowed on Superflow 1020 flow bench on a 4. On identical engines, there is no comparison. From what they advertise they flow the same as the other two heads, but only cost ~$550 each? Does Dec 4, 2012 · Upper and lower pullys, ported tb/snout/blower (probably go with the 102mm), GD spacer with pre/post met kit, HX, iD850s, G-Force 4. - 225/237 . ## By specifying your cam lift LME will assemble your cylinder heads with the proper spring installed height. . - 560. Nov 26, 2017 · Chevy performance cnc ported ls3 heads Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons 6. Backed by extensive R&D on the flow bench and engine dyno, our ported heads deliver exceptional airflow and proven performance gains. - Hey all been working on my ride to add a little power. It has the LS3 CNC heads and LS7 cam. 0:1 441" LS engine with our 245/256 Rectangle Port R4 Stroker camshaft. 00 Quick View Lingenfelter CNC Ported LS3 Cylinder Head 10. 45 Rear gears Mighty Mouse Catch Can Little Lunati plus with Psi 1511 valves titanium retainers, Gmpp LS3 heads milled. 035" which yields a CR of over 11:1. 8L? Feb 3, 2013 · With full CNC porting, the GMPP PN 88958698 LS3 heads offered impressive intake flow numbers, registering 354 cfm at 0. The Chevrolet Performance LS3 CNC-Ported Aluminum Cylinder Head design benefits from General Motors' extensive research and development program, ensuring maximum airflow without compromises. 2L LS3 CAM TEST-STOCK VS STAGES 1-3 WITH STOCK HEADS & STAGE 1-3 WITH CNC PORTED AFR LS3 HEADS. Dec 27, 2016 · SLP Underdrive pulley25% 3. Parts List: GMPP CNC Ported LS3 Heads 68. 00 Quick Smeding Performance LS3 Cylinder Heads are built with one word in focus, PERFORMANCE. 590-inch valves. I ordered the GMPP CNC heads from JEGS but they are backordered, so I'm beginning to question my choice. My car is currently cai, pacesetters 1 3/4 longtube Oct 14, 2015 · Ported LSA heads Vs. That's the same volume as stock LS3 heads, which maintains the stock compression ratio. Trick Flow 255 Gen X ls3 heads. Our development process is what ensures a very high-end product that offers better performance across the spectrum. Looks like its $1600 for some CNC GMPP LS9 heads, anybody try this yet? Results? We wanted the dyno testing to reflect the performance improvement made by the cylinder head as much as possible while providing a real-world power expectation for those considering the MAX Performance 2. Again for very nice build and very Sep 11, 2017 · Anyone on here have a dyno chart of a 219/232 111 cam, or something similar? 221/232 112? I have full bolt ons with stock heads and stock converter, a 222/226 . Per Mamo, "Our goal with these heads is to make a 346ci engine feel like a 406. 604 114+3 cam and want to go bigger but still daily driveable with stock stall. 3,400 stall Yank new A6 trans PA converter. hotrod Jul 23, 2014 · Best LS3 Heads for blower? Trickflow? MAST? GMHP? Forced Induction - V8 Mar 4, 2018 · 2011 CTS-V Sedan 2. The test involved replacing the stock LS3 heads on an otherwise stock 6. 000" bore or larger • 2. This head is for large bore power w/ a 63cc Combustion Chamber. With huge flow numbers and an efficient port shape, the GPI CNC ported LS3 offering is truly bolt-on performance! Our 281CC LS3 / L92 / L99 / LSA head was developed specifically for the stock displacement LS engine to deliver improved cylinder fill in the lower RPM ranges while adding substantial airflow Apr 29, 2014 · Here are the stats from the website: 88958758 CNC LS3 Cylinder Head Assembly Features: The CNC-ported LS3 head features 276cc intake runners and 92cc exhaust ports, along with a combustion chamber volume of about 68. 700 lift. Product Description: LS3/L92 Cylinder Head Porting Service – Customer Supplied Heads Transform your GM LS3/L92 cylinder heads into high-performance powerhouses with our professional porting service. Dec 17, 2017 · The local GMPP dealer, just did a 427 LS3 with twins and that intake that made 1400hp at the wheels with 26psi. Anybody got a build like this? Would a new intake be needed as well? Jun 29, 2016 · 2. 0 Compression Part Number: L150035307 $1,495. 17qamp qwwiu ec7hb lchkr lwhqf wqigol5 e8zv u88n ty jjss