350 vortec heads. 00" bore gasket. Comp Cams 12-467-8 280XFI hydraulic roller cam sbc Chevy Vortec Aluminum 350 Cylinder Heads 64cc 2. 428" 191/196° on a 111º LSA. 5cc dish pistons deep in the hole (rebuilder pistons), vortec heads with guides turned down & LT4 springs, voodoo 262 cam, topped by an RPM intake and 750cfm vac. Raised intake roof for enhanced air flow. Was a recent rebuild, stock 22. Mar 21, 2014 · Vortecs are about the best flowing factory heads put on a small block but the outside dimensions are the same so the same manifolds will fit them. Basically, the 305 Vortec chamber is much like the preceeding 305 head chamber. Feb 15, 2024 · The Vortec head with 1. 027x 4. I replaced the 283 in my wagon with a 400. Our 906 cylinder heads are meticulously engineered for top-tier performance, complete with detailed specs to Mar 4, 2024 · 350 HP SBC 350 Build Recipe. Jun 8, 2018 · Hoping for 350 hp and a flat torque curve of 350 or more if possible with a static cr of 9. It is not compatible with LT1/LT4 or factory roller Small Blocks built from 1985 and newer. Knowing the Here is Nick German’s contact information: Dynamic Cylinder Head LLC Attn; Nick German, 310 N. Unit #10, Tea, SD 57064. If the engine has a tight quench with Vortec heads, then less timing is needed, if it has no quench then 34 to 36 is the norm. Angle or Straight plug design. The bigger heads to follow were the “double-hump” heads championed by the mid-’60s 327 engines. These powerful heads incorporate Edelbrock's high-quench combustion chamber which promotes a more uniform atomization of the air/fuel mixture for more power. An engine swap can be quite costly, so With detailed specs for 062 and 906 Vortec heads readily available, you can make an informed choice. D. The earliest 265 and 283 small-blocks relied on an iron Power Pack head that featured 58-cc chambers and tiny 1. 94 x 1. Chevy Vortec Aluminum 350 Cylinder Heads 64cc 2. 5:1 compression. Oct 8, 2004 · Vortec Max Lift (Warning!) Don't try this at home Here’s what happened when I ran a Competition Cams Comp Magnum 270H (. Stock air flow of the 350C heads is 200 to Nov 17, 2011 · It comes in at $1,499. Apr 6, 2018 · Our estimate then and now is around 350-375 horsepower. $1,578. 200" – requires Fel-Pro® exhaust Jul 12, 2016 · The 1996-2000 350ci Vortec 5700 engines enjoy lots of aftermarket support to help improve the 255 hp and 330 lb-ft of torque they're rated for at the crank. May 12, 2004 · A 350 or 400 will never run up to it's potential with 305 heads on it. 041 inch thick head gasket and the piston is between 0. Find Summit Racing™ Vortec Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! Are you looking for a good set of heads to up the performance factor of your Vortec engine? Our Summit Performance® Vortec cylinder heads have what it takes to get the job done. 50-inch exhaust valves, while the 062 heads have slightly larger 1. or Best Offer. Apr 18, 2015 · Their head assembly kits are high quality, catered to the circle track hobby racer (guy's who are typically hard on their stuff). 7L Vortec heads, and experience enhanced performance like never before. 650 inch of valve lift. Here was a post here that it came up in, but I don't remember what the title was. ENQCH350CK1. THIS CYLINDER HEAD HAS THE FOLLOWING: 190CC intake ports. 50 for a pair. Vortec Bowtie cylinder heads are the most powerful cast-iron heads offered by Chevrolet Performance. Mill . 468/. Where you can gain substantially more power is by concentrating on the exhaust side of the head. 475" lift require machining valve guide bosses and checking valve seal to valve BluePrint Engines 350 C. it might make sense to get a set of Smallport Bowtie Vortec heads Heads. 68 RS Coupe 355/350 TH, Detroit Speed, Hotchkis, Vintage Air, 8. 60-inch exhaust valves. Roller Tip Rocker Arms and Push Rods. With the larger AFR heads, the torque peak was raised to 4,200 rpm, where 420 lb-ft were generated, while the new 418hp peak occurred 400 rpm higher Jul 19, 2023 · I updated my 1972 307ci small block engine in my 68 Chevelle with new Vortec heads, medium cam,Duration:262/270,RPM range=1300-5600. I had heard conflicting reports of how much lift a stock Vortec head would take, and was ignorant of how to check it myself. 03. 489 valve lift, and 112 LSA), 600cfm Edelbrock, and points ignition May 5, 2014 · I estimate with the original bottom end of the 350/290 combined with the vortecs and performer intake, im around 9. 840" HEAD. Stainless Steel Valves. I replaced it but now it seems like the #5 cylinder plug is maybe starting to foul out. 5" 3. 02"/1. 7L 350 Vortec Cylinder Heads - Stainless Steel Valves & Springs - New Aftermarket Replacement For GMC & Chevy - Pair Fits Cast Numbers 906 & 062 - No Core Return dummy Apr 3, 2019 · LS Cylinder Head Science with Custom Performance Racing; Old School Small Block Chevy 350 vs LS1 Comparison; What Are The Best And Worst Small Block Chevrolet 350 Heads; Why Can’t Pushrod Engines Rev High? Engine Building ~ How To Lift, Move and Store an Engine; How To Turn an Engine Stand into an Engine Run Stand In this video Robert shows you how he and Joe rebuilt a set of 906 Small Block Chevy Vortec Cylinder Heads! Feb 28, 2024 · The Vortec head is quite a bit different compared to a traditional small-block head. speedomotive. Vortec cylinder heads have been around for over 20 years and are still a great option for a performance small block build. 1-. I have a free set of vortec heads that need a good cleanup and valve job that ill be using. You have to Dec 10, 2019 · Larger Dave. 7L/350 Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! Cylinder Head, Vortec, Cast Iron, Assembled, 67cc Chamber Nov 4, 2019 · Description. small-block came with 76cc chambers. 41 (plus shipping). Find Chevrolet Performance Vortec Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! Chevrolet Performance cast iron Vortec cylinder heads will fit 1958 and later small block Chevy engines, and offer a 20 to 40 hp increase over earlier cast iron small block heads. This design caused the cooling system to develop hot spots and that is why the 400 heads have steam holes. 02/1. Jul 6, 2006 · jimfulco. 025" so that a . From 1996 to 2000, GM truck and van 350 engines came equipped with L-31 Vortec cylinder heads. 5 valves just fits. 530" lift stock and have screw in studs and flow much better on the exhaust than the stock L31's. com FREE DELIVERY possible on eligible purchases Dec 22, 2008 · Nicky Fowler and his staff at Scoggin-Dickey in Lubbock, Texas, put on their thinking caps and machined a new and unique intake manifold to mate the Vortec heads to the tuned-port 350. Dec 25, 2007 · Milling the Vortec head. HO turn-key crate engine from Chevrolet Performance! It's packed with all the features you need to get a reliable 330 hp and 380 lbs. As tested with Vortec heads, this cam made 409 lb-ft at 4,000 rpm and 372 hp at 5,400. Its durable rotating assembly has aluminum pistons delivering a 9. Recommended. 025 thick and your flat top piston being . This way you can run a good solid flat tappet 272 or so cam. Replaces Casting Numbers: 12558062, 10239906, Intake Runner 170cc, Combustion Chamber 64cc, Straight Spark Plug. 940"/1. Price. Raised, machined rocker rails. 25 or so to 1 CR. Second issue is the insane amount of money GM wants for a TBI-to-Vortec-cylinder-head intake manifold. 5463 posts · Joined 2003. EngineQuest, Chev SB Vortec Performance Cast Iron Heads, 170cc/64cc, Vortec Intake, Assembled Stage 1, Pair. Text descriptions of the heads can also find text descriptions for each head type under the respective headings. 72/1. ProMaxx Performance designed/developed this cylinder head from from the GM 906-062 Vortec factory casting. eBay Motors. I'm a big fan of the Vortec head but IMO, it's not worth the trouble and expense on a small bore engine. Feb 5, 2017 · So I ran the numbers and swapping over to 350 vortec heads of the 906/062 design is pretty much a wash on compression when using a steel shim gasket . This was done to reduce compression so that Chevrolet could achieve the emissions requirements. 64-cc combustion chamber. Just by changing to smaller 64cc heads, the compression ratio improves from 8. Vortec Bowtie cylinder heads come with bigger valves, a thicker deck surface and 66cc No heat riser. 5 on cali 91 pump gas working below 6k rpm (5500 is possible). Sep 20, 2018 · Clearwater Cylinder Head - Complete 5. Utilizes fast-burn combustion chambers and high-velocity intake and exhaust ports. 3. Bare heads will have valve guides and seats installed, but will require final sizing and a valve job to match the valves you will be using. Requires a Vortec-style intake manifold Find CHEVROLET 5. 530" maximum valve lift (without modifications) Screw-in studs (3/8" top, 7/16" bottom) New “time-serts” prevent oil migration through rocker studs. Use head gaskets with stainless-steel fire rings. It was 8. CAST-IRON VORTEC CYLINDER HEAD ASSEMBLY. JEGS Cast Iron Vortec Cylinder Head has fast burn combustion chambers and high-velocity intake and exhaust ports. Ran 12. No heat risers. 75 bore 3. Vortec heads have the exhaust ports raised a tenth of an inch, but not the location of holes that bolt on the cast iron manifolds. under deck cc on 85 305 12cc. They feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. 0-9. Nov 30, 2023 · Biggest nightmare on the Vortec heads is the lack of an exhaust-gas crossover port, which means the EGR won't work without major modification. 300”-. Completely assembled with 1. 600 inch of valve lift, while a set of Vortec heads on a 383 cubic inch engine can typically handle up to 0. Find CHEVROLET 5. I don't know what the combustion chamber looks like or how big it is, but I suspect they're smaller, since the 350 Vortec heads have chambers that are right at 4" wide, and would leave a serious ledge on a 305. Cylinder Head, PowerOval® 280, Aluminum, Assembled, 113cc Chamber, 280cc Intake, Chevy, Big Block, Each. 7L 350 Vortec Cylinder Heads - Stainless Steel Valves & Springs - New Aftermarket Replacement For GMC & Chevy - Pair Fits Cast Numbers 906 & 062 - No Core Return. COMP Cams CL12-234-2 is a USA-made camshaft that fits Chevrolet GEN 1 Small Blocks including the 262, 265, 267, 283, 302, 305, 307, 327, 350, and 400. Jun 15, 2007 · Anyone know what the spark plug gap should be on my vortec heads? (AC R44TS or AC R44LTS plugs) Motor is a crate 350 with Lunati VooDoo 262 (262/268 at the seat, 219/227 at . Works great for street and strip too. This head was made thicker than OEM specs for better quality. Feb 28, 2015 · The XE268H should work with a stock converter but is better with at least a 2,000-rpm stall-speed converter. 50-inch valves. EQ bare heads – ready to install the valve train! All EQ cylinder heads outperform their competitors! JEGS Vortec Top End Kit Includes: (1) JEGS Pair Intake Manifold Gaskets 555-210003 (2) JEGS High-Temp Cylinder Head Gaskets 555-210041 (1) JEGS 1/2 oz Tube Thread Sealant 555-28011 (1) JEGS Pair Exhaust Header Gaskets 555-210050 (1) JEGS Timing Cover Gasket Set 555-210065 (1) JEGS Pair Valve Cover Gaskets 555-210071 Product Details. These Vortec SBC heads are engineered to deliver top-notch performance and reliability, making them an ideal choice for your engine upgrade or replacement needs. 020 inch below the deck surface. 7L 350 Vortec Cylinder Heads - Stainless Steel Valves & Springs - New Aftermarket Replacement For GMC & Chevy - Pair Fits Cast Numbers 906 & 062 - No Core Return: Cylinder Heads - Amazon. 51@ 111 mph in the 1/4. . $365. Upgrade your engine with our SBC heads, 350 Vortec heads, or 5. 240". 015" and assuming 62 cc's, now if they are 64 cc then looking at . This head performs great right out of the box but can be mildly ported and milled up to 0. 7 Vortec heads, feature advanced technology to enhance airflow and combustion efficiency. 470" lift) on a set of stock Vortec heads. Not for use on Gen II 1992-96 LT1/LT4 engines with reverse-flow cooling system. These vehicles introduced the L31 5. The XE268H should work with a stock converter but is better with at least a 2,000-rpm stall-speed converter. To find out more about ordering a budget Vortec 350 like this, go to www. PROMAXX Performance Vortec 185cc Iron Cylinder Heads 2150 Cylinder Heads, Cast Iron, Bare, 64cc Chamber, 185cc Intake Runner, Straight Plug, Chevy, Small Block, Pair Part Number: PMX-2150 Jul 27, 2006 · But perhaps the best news of all is that these springs will bolt right onto a stock Vortec head with no machining required. Cruiser, Drop-In, 341 HP, 371 TQ, New Block, Aluminum Heads, Chevrolet, Small Block, Each. While this block is more expensive, it's a new casting with four-bolt mains and 350-size main journals, which means slower bearing speeds over the larger Oct 16, 2012 · Find out why GM Vortec cylinder heads are a great way to add horsepower to your small block Chevy. Plus those Vortec heads have a 460 or so limit on lift unless you have some machining done on them. Just use the 58cc Torquer "305" heads with some decent, prudent bowl and port work. d. $79900. 02. On engines using the GM 400 block, or aftermarket blocks with steam holes, use Speedmaster PCE348. #4 · Jul 6, 2006. com from a post over there. This is a cast iron direct bolt on replacement for your 906 -062 engine. The selection list is basically rather thin for today’s performance engines. 94 1. Performs great right out of the box and can be mildly ported and milled up to 0. Runs great but the #1 cylinder plug fouled out after about 1000 miles. 7L 350 Vortec Cylinder Heads - Stainless Steel Valves & Springs - New Aftermarket Replacement For GMC & Chevy - Pair Fits Cast Numbers 906 & 062 - No Core Return ATK High Performance GM 350 Vortec 315 HP Stage 1 Long Block Crate Engines HP74. com FREE DELIVERY possible on eligible purchases Spark Plugs For Vortec Heads: 5613611 R44LTS, set of 8. Source. Comes out to about 9. 550" valves. I like Thorley tri-Y headers and they fit pretty tight to the block so you might look at those. The intake manifold bolt pattern changed using only four bolts per side instead of the typical small-block’s six per side. 55-inch valves. 040 in. New Chevrolet Chevy GM GMC 5. Our 350 Vortec heads, also known as 5. Be sure to follow proper break in procedure. 50 valves and porting and the larger 292H cam . Your question relates to porting the Vortec heads to improve the flow, which is a great idea. You can also look at Flow-Tek, sold by Speedway Motors, about $770 fully assembled. You'll be assembled and running for less than $700. So heres what I got so far: 86-94 350 Longblock 906 L31 Vortec Heads SDPC Vortec Intake baseplate Stock runners Stock Plenum Stock throttle body 24 ilb LT1 injectors 3" Headers and 3" Flowmaster American Thunder exhaust Chevrolet Performance 350 Vortec C. • CNC-machined aluminum performance cylinder head. 475" lift cams stock, have pressed in rocker arm studs and that the Vortec large and smallport heads accept up to 0. 030 62cc chambers. These springs also increase the amount of available valve lift from 0. 500” valve lift area, wide bowl, and back-cut intake valve and exhaust. 00 Current price is: Nov 15, 2002 · For anyone wanting to see and possibly read up a little on the differences between the 305 and 350 Vortec heads, take a look HERE, post #478. 02 S/R's. With the smaller 64cc chamber Vortec heads, this means more power. 08 or less this is the biggest cam I would get. Even with the 1. 50-inch valve head performed May 1, 2016 · Comp bills the XE268H as having a 1,600-5,800-rpm operating range, compared with the 268H High Energy's 1,500-5,500-rpm range. These heads appear to not be that bad, not as good as 350 Vortec but looks like porting could rectify that, there is a slight Feb 1, 2012 · Ran them in a 78 Nova with a tunnel-ram and 4. 020" thick shim headgasket and 64 cc 2. Cruiser Fully Dressed Crate Engines BP350CTCD. View Details. 5:1 to 9. Dec 9, 2005 · As many know, Chevy Vortec heads make great power out-of-the box but can’t take more than about . These value-priced cast-iron cylinder heads use modified combustion chambers and high-velocity port technology to provide improved performance. nastyz28. 12558060. There's a whole thread on Vortec-to-TBI swaps. If installed in one of these trucks, a custom computer re-program is needed. Disconnect the vacuum advance when your setting the mechanical advance, this way it won`t influence Watch on. Jun 8, 2021 · To determine what type of heads are on your small block Chevy, take a look at the illustrations below for 'Early' or 'Late' Style, Aftermarket Aluminum SBC heads, Aftermarket Cast Iron heads, and other SBC cylinder heads. 99. In stock from, the Engine Quest 350C Vortec heads is basically the same in the performance department as the currently available new, new factory Chevy Vortec heads, which is sometimes available from Chevy under part number 12691728 On the outside, It resembles the Chevy ‘906 Vortec head. 450-. Overall Pick. Dec 3, 2011 · While it`s true vortec heads don`t need as much timing, it`s still varible depending on the combustion characteristics. Vortecs also require center-bolt valve covers and gaskets. Ships Monday. Crate Engine, Long Block, 350 C. 040 inch. 350 HP 350 SBC build list components using a late-model 1-piece rear main seal two bolt main block. 451" 109ºLSA, with 1. andrewappstate (496) 99%. 5614210 MR43LTS, set of 8. This cam is great for additional bottom end torque. Dec 26, 2010 · Assuming your rear gears are around 3. 25164641 #3, Rapid Fire style, set of 8. Got the 78 Nova into the 11's at 115 MPH. 050, . 48 stroke. 00 shipping. 000"/1. So, don’t buy it if your engine fits those descriptions. Vortec design combustion chamber. Jun 23, 2007 · Seeing that the normal Voretc 350 L31 heads dont accept over 0. 7:1 with no other changes. 42 posi 10-bolt, MagnaFlow 2 1/2 Feb 24, 2011 · My earlier posts contain info on building a 9:1 305 with 906 big valve Vortec heads. i. 57" rear gear and B&M converter that stalled to 2400 rpm. 0:1 compression ratio, but if all you did was swap on a set of Vortec heads, the compression jumps nearly a full point to a more efficient 9. The exhaust gasket will burn out if the tube doesn't match the port's location. The springs are stock 1. An easy way to gain 20-40 horsepower on any 1955 and newer Small-Block Chevrolet V-8 (except later-style LT1/LT4 engines with reverse-flow cooling) is by installing a set of Vortec cylinder heads. Built of cast iron, these powerhouse heads upped the horsepower of these engines by magnitudes. 330 HP Crate Engines You won't go broke finishing off your project car with this 350 Vortec c. Of course, these numbers are just general guidelines and can vary depending on the specific application. JEGS crate engines feature a 36 month/unlimited mileage warranty. FREE Shipping. 7L 350 Vortec Cylinder Head 906 / 062 Assembly. ( 6 ) Estimated Ship Date: Jun 10, 2024 if ordered today. GM5115 . +$20. 94 intake to fit the small 283/307 bore, you should still be able to NEW FITS CHEVY GM MARINE 350 906 062 V8 VORTEC CYLINDER HEAD. 7L/350 Headers and get Free Shipping on Orders Over $109 at Summit Racing! $20 Off $250 / $40 Off $500 / $80 Off $1,000 - Use Promo Code: REWARDS Vehicle/Engine Search Vehicle/Engine Search Make/Model Search Additional Options: AFR's 190cc Vortec Street heads are the preferred choice over reworked factory heads. This difference in valve size can affect the engine’s overall performance, as we will discuss later Apr 17, 2020 · Rebuilding Junkyard SBC Vortec Cylinder Heads. They require the use of a Head History. Recommended for street, towing, or street/strip engines from 350-383 cubic inches, operating up to 6000 RPM. This is primarily attributed to the high port flow in the . I got a solid 241 cfm on Kev's 2. $ 449. 305V8 3. I. Well, according to Salle Chevrolet, you can use Crane’s Spring GM 350 906 NEW FULL. -ft. Straight spark plugs. The Vortec 305 heads have a vane in then similar to, but smaller than swirl port heads. 7L small block featuring Vortec cylinder heads that were developed for maximum power and efficiency. Add To Cart. The 906 heads have 1. Vortec style intake manifold bolt pattern. $ 425. Chevrolet Performance Cast Iron Vortec Cylinder Head (two quantity) COMP Cams Xtreme Energy Hydraulic Camshaft Kit. as such the top of the port is very close to the edge of the gasket on a standard square port gasket and round tube header. Fast Burn Aluminum Cylinder Head Assembly. The only exception to these guidelines is if one uses pistons designed for using the 305 heads on a 350. • 210cc intake port, roof raised . 1006 or Felpro #1014. 7L 350 906/062 PAIR STAINLESS STEEL VALVES NO CORE CHARGE REQUIRED 803860T DNA Motoring CYLH-SBC-350 Aluminum Bare Cylinder Head Compatible with SBC Engines 302, 327, 350, 383 Nov 17, 2021 · Buy Clearwater Cylinder Head - Complete 5. Find Parts and Accessories 350 Vortec Heads KEYWORD and get Free Shipping on Orders Over $109 at Summit Racing! Jun 14, 2022 · For example, a set of Vortec heads on a 350 cubic inch engine can typically handle up to 0. 5:1 rockers. There are 3 stickies that you need to read in the Performance Complete 5. Featuring wide-open intake runners, efficient combustion chambers, and a high-performance valve job, these heads FILTER BY: 350 Chevy 96 Up Vortex Cylinder Heads 906 & 062 Casting – Pair - Part #EQ-CH350C. Aug 24, 2011 · I'm packing some goodies in the new 350 while I'm in there, and I have a few questions, pretty much all valvetrain stuff though. This engine was designed as a direct replacement for 1996-2000 Chevy & GMC pickups, SUV's, and van applications. AFR 195cc Eliminator Street Heads #1034. 12552520 & 12558059 are '97-up Vortec 305 heads. Brand New. NEW CHEVROLET 5. Car runs fine on pump gas, idles smooth, pulls hard. A 750 on a dual plane like Holley's old 300-36 and headers uncorked! Sep 30, 2010 · 22596 posts · Joined 2007. These upgraded production cylinder heads are ideal for 400-450 horsepower street and racing (great for circle track applications) engines. $1,349. I do remember that all the good info came from www. 25534351C: 2004 Bow Tie, cast-iron, Vortec, 175cc intake ports, 65cc exhaust ports, 2. Aug 1, 2012 · The stock cams that came on ALL 1996-2003 L31 Vortec 350's use a cam with lift specs of 0. Uses bare head P/N 12529093. My plans are to install new stock vortec heads, edelbrock performer intake, and a cam. Jan 1, 2003 · These production Vortec heads were used in the new Vortec 350ci engine intended for -, -, and 1-ton Chevy pickups. Amazingly, this mundane, production-based 1. Learn the physical differences between traditional small b Sep 8, 2022 · This camshaft is a great upgrade for 1996-2000 Chevy/GMC trucks equipped with the L31 Vortec 350 Engine. Dec 12, 2018 · Originally sold bare, so valve sizes are dependent on machining. Vortec Chamber (No Heat Riser), Vortec Intake Bolt Pattern, Center Bolt Valve Cover Pattern. com, or call 626-869-0270 Sep 6, 2021 · With a 76cc chamber head on a 350 Chevy, your compression ratio will be around 8. Jan 1, 2024 · A cast-iron block with four-bolt main caps is the foundation for the 350 HO, which is topped with iron Vortec heads fitted with 1. 7 VORTEC Cast # 906/062 Cylinder Heads Pair (CORE RETURN REQUIRED) Recommendations Clearwater Cylinder Head - Complete 5. Engineered to greatly increase performance and efficiency, E-TEC heads fit SB-Chevy 302-400ci engines with ''Vortec'' style intake manifolds. Recommended spark plugs are Champion RC12YC or equivalent Mar 20, 2008 · Stock spec's will be the DITH piston of right at . • 78cc D-shaped exhaust ports, raised . 94-inch intake valves and 1. 94-inch valves. $1,648. Oct 15, 2018 · Buy NEW Chevy 350 5. Sealed Power and Silvolite have pistons for this use. 0L 305 VORTEC CYLINDER HEAD 1996 - UP 1. Lowest Price Guarantee. Later I went with 601 casting 305 HO heads with 1. The big difference is in the ports. 015 to 0. A Performer cam, and junkyard 3800GM beehive springs and retainers work good. 0:1. So I just took the new heads out of their boxes, and The head gasket we recommend for our 23deg. The Vortec design ensures improved power output and fuel Sep 27, 2017 · This is great for stock short block 350 engines like the Chevrolet Performance 290 hp 350 crate engine that uses a dished piston with a 76cc combustion chamber head. The Vortec heads offer great intake port flow despite the rather small 1. RS12YC Champion. Sep 22, 2006 · Shaver offers EQ Vortec heads in assembled form, starting at $860. heads used on 327/350/383/400 SBC engines without steam holes is Felpro #1003. 94/1. FREE delivery Apr 1 - 8. Sep 26, 2018 · Remanufactured GM GMC Chevy 350 5. Spark plugs have been positioned closer to the Dec 3, 2008 · 1201 posts · Joined 2000. Mar 21, 2020 · The Debut. and requires a Vortec-style intake Jun 16, 2020 · This item New Replacement Vortec Cylinder Heads GM Marine 5. Requires Vortec-specific intake manifold. 500" valves. 95. May 12, 2023 · The valve size is a notable difference between the 906 and 062 Vortec heads. 431"/0. Extra thick deck surface. 470” valve lift without binding. 7 VORTEC L31 Cylinder Heads PAIR # 906 062 Suburban 1996-2002 (CORE RETURN REQUIRED): Cylinder Heads - Amazon. Camshafts with more than 0. Made from the highest grade cast iron. Here are their recommendations : INSTALLATION NOTE: Match with Edelbrock head gasket sets. 25-inch diameter, and the rocker studs are pressed in. 412/0. Linda Ave. of torque from a dependable, time-tested combination of GM Trick Flow® PowerOval® 280 Cylinder Heads for Big Block Chevrolet TFS-41310001-M13. Jan 12, 2015 · Edelbrock E-Tec 170's are a vortec head cast in aluminum. P526S Accel U-Groove “SHORTY” Double Platinum Header Plugs approximately 3/16" shorter then R44LTS plugs, set of 8. 605-214-2248 nick@dynamiccylinderhead. 00. The common solution to this issue is to machine the valve guides, and spring seats to allow upgraded springs and more clearance for more lift. And all 1996-2013 marine Vortec 350 engines engines, which use the same L31 Vortec 350 heads are used with a 196º/206º 0. Angled spark plugs (5/8" hex, 3/4" reach, tapered plugs) 1. 025 down the bore at TDC you’re looking at a compression ratio in the hood of 9 to 1 with the Vortec’s 64cc chamber. 2 drop in compression. 48" valve spring seat diameter. 5:1 in its original condition before the OP messed with it. This product may not be eligible for select promotional offers. 350 Chevy Rotating Assembly. Rated 0 out of 5 (0 reviews) $ 500. Features include fast burn combustion chambers, and a high-velocity port design. 0:1 compression ratio. #9 · Dec 4, 2008. #4 · Sep 30, 2010. • Completely assembled with 2. Nearly all traditional heads for a mid-70’s and later 350 c. 58+15=73 Not much less than your tipacal 76cc smogger but enough to make a differance. Core Charge $510. 60. Crate Engine, Vortec, GM 350, 315 HP, Long Block, Internal Front/External Rear Engine Balance, Cast Iron Heads, Chevy, 350, Each. Your finished compression ratio is going to be dependent on the head gasket thickness so assuming that at . Bolt on more horsepower with performance cylinder heads from Summit Racing! Shop cast iron, aluminum, CNC-ported, CNC-profiled cylinder heads & more. JEGS 555-514080 Vortec Cast Iron Cylinder Head Features: Fits all 1955-2002 Chevy small blocks except LT1, LT4, and LS-style engines. 00 Original price was: $500. There have been many tech articles written about them over the years, so I won’t get to far into the weeds about the improved combustion chamber and port designs. Are you looking to get almost 100 more horsepower from your GM 350 crate engine? This is the Speed Secrets episode for you! Featuring the Comp Cams XM270H ca In Stock. That creates an 8. Jun 5, 2020 · Let’s start with the first benefit to using these heads — the smaller chamber. 5:1 assuming the use of a 0. 60" heads will create about 10. I'm currently using, Autolite Platinum AP 104 plugs. All 400ci small-blocks utilize Siamese cylinder walls. Part Number: HPE-HP74. Anything else will make your car a dog of the line. ebay Motors. Chevy 350 short-block. com. $479. up wk lr vv jb qn bx es dm kl