Porting Cast Iron Heads

There is a big difference between a gasket match and a port match. Porting at Home The stock 429/460 iron heads in this story represent an interesting challenge. At that time, nearly everything was cast iron and if you did have enough money to purchase one of the few aluminum heads available, they were in raw form. Money wise, by the time you work over the cast iron heads you can buy a set of aluminum ones noting that you can't just bolt them on out of the box as advertised. Ford C8, C9 & D0 iron O. We take a very serious and methodical approach to cylinder head porting. Part# 68000010 PORTING INFORMATION The intake and exhaust ports are very efficient on these heads “as cast”. Now you can port your intake or cylinder heads, and polish any aluminum or cast iron finish to show-car perfection with this 92-piece kit. If that's the case, I'd buy the trick flows and be done with it. com site are generated at 25" H20, which is not a standard test pressure. Other drawbacks include weight (iron), large open chambers, a poor flowing exhaust port, and lack of flow above. Stage 1 Ported Big Block Chevy Cast Iron Holley Intake. Golf is hard too. 2019 Harley-Davidson XL 1200NS - Sportster Iron 1200, 2019 Harley-Davidson® Sportster® Iron 1200™ THE THRILL OF RIDING STRIPPED TO ITS BARE ESSENCE. The deck thickness is 5/8″ and they sport a new high efficiency heart shaped combustion chamber. Headers, Exhaust The range of Aussiespeed extractors and headers in not huge but is an area we are growing as our product range is developed and tested. Our CNC Fully Ported heads are 100% ported to maximum we can safely get out of the cylinder heads. The CJ heads can have both BBF or BBC exhaust flange. Re: Repairing a small hole in an intake port of a cast iron head Z-spar Splash Zone is the most commonly used one that I know of for reshaping intake ports. Also they're faster burn heads because of a revised combustion chamber. Trick Flow A 460; Small Block Chevy. Worlds Windsor-series cast iron cylinder heads provide a very cost-effective solution to getting serious power from a Ford 5. Aluminum Cylinder Heads for 396 402 427 454 502 BB Chevy A First-rate performance, progressive engineering and unmatched quality are the foundations of the Pro Action™ head series, and the RHS® BBC heads feature all of them and more. LQ4 [ edit ] The Vortec 6000 LQ4, is a V8 truck engine. com offers cast iron cylinder heads that produce great throttle response and low to mid range torque for race cars and street performance engines. Dart's Iron Eagle cast iron big-block heads are designed for street performance, bracket racing, oval track competition, tractor pulling, and high-performance marine applications. Currently In Stock: * Please call for current stock. Heads (714)943-3404. Many cylinder head manufacturers mentioned that engine builders should beware of budget cylinder heads available on eBay and through other sources. A number of changes occurred during the course of its production run, however, and some limit component interchange. AFR designed the big block D port aluminum pro-stock racing head, at that time the state-of-the-art. Rottler P55 5 Axis Cylinder Head Porting Machine Cutting Cast Iron Ports. Also please look at our track and dyno proven line burr ported manifolds! From NHRA records to working with major cylinder head companies, let our knowledge work for you! Heads are finished per application with many options! We have cylinder heads for NA, nitrous, and turbo applications!. Aluminum heads are a better investment. Combustion chambers are engineered for optimum swirl and quench right out of box. Rose hand pump - Top. It offers improved breathing over conventional "FE" exhaust manifolds without excessive header heat. All parts are washed in a hi-pressure jet wash prior to inspection and machining. 600" The exhaust port is probably the Iron head greatest weakness. This new geometry evacuates both chips and residue powder faster; which translates into Increased performance, longer tool life and reduced machining time. PRICE $6,495. Special edge prep and abrasive intended to use on cast iron cylinder heads with steel pre-cups. Big Block Chevy Replacement Cylinder Heads. If that's a heads up race engine or your standard street rebuild, we take it to the max. World identifies Windsor head casting numbers as "I-051" for cast-iron models and "I-034 for aluminum models. Butler Performance is the main source for stock and performance cylinder heads for your Pontiac. Many other heads in stock as well as manifolds and rocker set-ups Rectangular Port Cast Iron 1. The question is how much flow is lost and is it significant in reaching your goal. BES / Eliminator F460. new aftermarket cast iron gm chevy performance 302-350 906 vortec cylinder heads. A couple of mates of mine,runs 2V closed chamber heads on there 351's. Small Block Ford Canted Valve Cylinder heads for Windsor Series engines. After years of extensive R&D both on the flow bench and on our track, we have developed some of the best performing round port and D-port cast iron Pontiac cylinder heads ever. But, Horsepower has a much cheaper means to the same end. The 185 Vortec has taken the Vortec head to the next level. WE can now do CNC porting on cast iron heads and have already done a few sets of small block heads. 550" lift springs, 130CC intake port volume, pedestal rocker arm mounts. The difference in performance is 20 to 30 horsepower in the upper rpm ranges in this application. Unique multi-angled intake & radiused exhaust valve seats for increased flow and horsepower output. If you don't want a burr finished manifold proven from many dyno sessions, back to back runs, and track times, please don't order one from SRH. For some heads that require a considerable amount of material to be added, a plate of steel is often used instead of just braze material and it is welded to the iron head on the sides of the port and the radius part of the floor where the valve is located. CNC Porting - Occasionally a 100% CNC ported head might have a very small area left "as cast", this in no way affects performance. Instantly the HP rating increased 55HP to 255 HP primarily from the power of these cylinder heads. I'm betting it would be a close outcome. To me, a far more interesting comparison would be small-chamber Edelbrock heads versus a 906, both ported to similar configurations, where the iron head is generating a point less compression than the Es to equalize for the lost thermal efficiency of the lighter metal. Pro Filer Small Block Chevy All American Heads with 185cc Intake Runner, 2. Butler Performance Inc. The Eastwood Cylinder Head Porting Kit is designed to allow the home mechanic, using little more than a high-speed grinder, to clean, polish, and lightly modify the ports on cylinder heads. You will not find any PVC imitations that distort and. Aluminum heads are hard to beat when it comes to performance, but cast-iron heads are still a viable option for restoration or certain performance needs. 88 valve size with the SST Ported heads. Next they are checked by magnafluxing, (cast iron only) or pressure testing. Also large intake ports for high flow. Since summit had all of the heads out for display I could make an informed comparison. —BBM FE Cylinder Heads. Port your own cylinder heads and intake. I think it is important to own both copies if you truly want to have the best of both worlds. cast aluminum Pro valve covers are available for your Iron Eagle heads. The Impy iron heads weigh more obviously, allow less timing, and are lower comrpression (even with a. any tips for welding this up I have both tig and stick welders. Omar Cabrillo at Coast Motor Supply in Canoga Park, California, helped us out by. Designed from the ground up as a large cubic inch head with matching cast 4 intakes available the Monster is capable of 900+ hp with a single 4 And well over 1,000 hp with Nitrous. In any of these methods, it’s important to remember the heat management and welding technique outlined earlier to achieve a good weld. They do not look like the World SR torquers. Compare that to 215-220 CFM from even the best factory production heads such as 906's or even 915's!. Total Engine Airflow is constantly adding new products. -----If you could run a cast iron head at 100 degrees. New Indy MA-X cast iron heads : 2. Barnesville, GA 30204. cast iron cylinder heads: bruce's r&d doesn't end with alumium heads. 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. Just checking to see is there would be any interest in any CNC porting on the original Ford cast iron heads. Obviously, the modern heads flow more air than the vintage, cast-iron, small-block heads. > commonly referred to as Noddy, an 8 port cast iron mini head WAS made, > and was indeed homologated. Intake flow as much as 448 cfm @28" H2O!! Please call Joe @ (865) 573-9151 for more information. This was a hyd. The old cast iron Kohler engines can be rebuilt multiple times, as long as everything in it is rebuildable and not damaged beyond reuse. 64 Savoy Wagon. The intakes designed for the W9 heads were designed to work with this head (or the bigger CNC-ported versions) and were leading-edge technology at the time. We are #1 in Cylinder Heads since 1980. 3L Truck 862 and 706 Head castings While the 706 Heads are a SPM = Semi Permanent -mold And considerd to be a more consistant head casting then the 862 wich are Sand cast, Once ported There Is no difference. Porting at Home The stock 429/460 iron heads in this story represent an interesting challenge. CHEVY factory cast iron OVAL port head; Special "half-open" chamber design with closed chamber models. Blueprinted Stage 1 Ported Cast Iron Heads (225 cfm at 28") Our Nitemare Stage 1 head treatment focuses on improving the intake ports and bowls, but keeps costs down by leaving the stock Pontiac exhaust ports as they came from the factory. All components attach the same as original. There remains a considerable market for SBC iron heads. Porting available. Gavin is a well-known Southern Ohio puller that gained a lot of practical experience porting his own Cummins heads, discovered he had a knack and eventually start doing it for others. It is an iron/aluminum (1999 & 2000 model year engines had cast iron heads) design and produces 300 to 345 hp (224 to 257 kW) and 360 to 380 lb⋅ft (488 to 515 N⋅m). Fully CNC ported. cast iron to the recessed area of the chamber while it is hot. There were no original Mark IV oval-port aluminum heads from the factory Oval-port heads are found on trucks and passenger cars from 1965 through 1990 and they are an excellent choice for street performance applications, particularly in heavier cars. engines that is CNC-ported from the factory. Wallace Racing As You Go Through Life, DO A WHEELIE ! ! ! BACK All Pontiac Exhaust manifolds Pontiac High Performance Exhaust Manifolds The Port/Flange Holes is the number of bolts that hold the exhaust manifold to the head and the bolts on the flange to ehaust pipe. How to get a few extra horsepower for free when rebuilding and engine. It easily withstands today’s high horsepower loads with unsur passed reliability. Porting remains a viable means of improving flow for increased power. World Products 053030 - Cylinder Heads Cast Iron Ford Small Block WINDSOR JR. Re: Ever heard of Acid Porting for cast iron intake/exhaust manifolds? It is used on some racing class for a ported head as a cheater setups. These upgraded production cylinder heads are ideal for 400-450 horsepower street and racing (great for circle track applications) engines. The Edelbrock Pro Port casting is one of the best. Also large intake ports for high flow. In order to get the latest information please check out all of the porting guides and the information contained in them. At just 190cc in port volume the all new 2V flows a massive 300cfm at just. We wondered how much more power we could get from swapping to GM's bottom-dollar Vortec cast-iron head, and also their new "Fast Bum" aluminum heads. The CJ heads can have both BBF or BBC exhaust flange. With little other than a tidying of the port finish and some work in the chamber and around the pushrod on the intake, these heads delivered an average of 387 cfm on the intakes and 298 on the exhaust at 0. These value-priced cast-iron cylinder heads use modified combustion chambers and high velocity port technology to provide improved performance. Doing a full-on porting job is very labor intensive and is a dirty, time consuming project- made doubly so when working with cast iron. Denny rebuilt the engine and ported and polished the cast iron heads. Porting cylinder heads for better performance is as much an art as it is a science. Also large intake ports for high flow. SBC Sportsman II Cast Iron. This 56 piece set offers the most complete cylinder head porting kit available. We recommend that if. 77 Rocker arm studs New Heater nipple and freeze plugs Three angle valve job New bronze guide liners honed to exact size. There is an interesting excerpt in "Mopar Engines", page 72, describing how such a head was ported and made to flow as well or better than other small block cylinder heads. These cylinder heads are from large horsepower engines that are used in the ongoing business of gas transmission companies, refineries, city municipalities, and the marine industry. Completely CNC machined, the Iron Eagle 23° 227cc CNC heads offer ultimate consistency and performance. C Automotive also offers early 289, early 302, E7, and 351 W heads. Cast iron mopar J heads with 2. For cast iron heads you will also need stones and sanding rolls but most of your work will be with the carbide. 00 CNC PORTED 228CC DART IRON EAGLE PLATINUM CYLINDER HEAD $1,025. A rebuilt set of iron heads even with pocket porting shouldn't run as much as new aluminum heads. Extreme Port Job for Cylinder Heads:$1500 for aluminum. At just 190cc in port volume the all new 2V flows a massive 300cfm at just. RECTANGULAR PORT - Valve size 2. Port, polish and remove flashing on engine parts with an electric drill or die grinder. The most important area of the port is the valve seat and the one half inch area before and after the seat. The line is dedicated to changing the 23º SBC market as we know it. ***HEADS NOW AVAILABLE WITH FULL CNC PORTING FOR INCREASES OF 25CFM FLOW MORE THAN OUR STANDARD STAGE 3 HEAD. 02 intake valves. This listing is for a pair of BBC 3964290 Oval Port Bare Cast Iron Cylinder Heads. How much does a cylinder head weight on a and then by myself without the head and did the math. Extreme Intake Manifold Porting: $900 This is for trying to get the absolute most out of your intake. Omar Cabrillo at Coast Motor Supply in Canoga Park, California, helped us out by. The die grinder is the stock in trade of the head porter and are used with a variety of carbide cutters, grinding wheels and abrasive cartridges. If the heads are ported to the max the resulting power band will be very narrow. These cast-iron, rectangular-port perfor-mance heads from Summit Racing fea-tured 308cc intake ports, a 2. 00 CNC PORTED 228CC DART IRON EAGLE PLATINUM CYLINDER HEAD $1,025. Dart Iron Eagle cylinder heads will give you the performance you want at a great price. 080” diameter intake valves and a highly efficient 64cc combustion chamber, the MOTOWN provides. New tips and information can come at any time. Lobe separation: 112 to 116 degrees Split pattern: Exhaust duration and lift approximately 10 degrees and. -----799 Vs. New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Aluminum heads are a better investment. Modern Cylinder Head Inc. 02" Intake Valve and 1. Seats: Available with ductile iron or alloy seats. overheating. The F460 have just the BBC exhaust like an A460 head. These are pictures of work we have done for customers. cast iron v/6 heads are bi-directional. WOODWARD EQUIPMENT CHS 15790 SE Piazza Ave STE104 PO Box 2650 Clackamas, OR 97015 USA. Level 2 porting features a reworked short turn, chamber deshroud, bowl blend, a blending of the valve guide, and the pushrod pinch is reduced. Cast Iron Cylinder Heads Cast iron used to be the material of choice for cylinder heads. I like my battery powered drill because it is so handy and the cord never gets caught on things or knocks over my valve rack or such porting nuisances. Designed for use in racing applications where cast iron heads are mandated or for larger displacement small block street-type engines, World’s 220cc intake MOTOWN heads are the ULTIMATE cast iron SBC head. When aluminum heads are cast there is a lot of core shift, more than with iron heads. Coolant is transferred from head to head by a steam line on the back of heads. Shaft Mount Rockers - Shaft mount rockers might require additional clearance for proper pushrod fitment. 150 mph on the dyno with over 250 hp to the rear wheels!. • 351C-4V closed wedge chamber (bolt-fulcrum rockers). Dart's Iron Eagle cylinder heads are available in both 308cc and 345cc intake- runner sizes. Every now and then you have a good day and you are lulled into thinking it's not so bad. Also be sure all tools are made for cast iron work. If you don't want a burr finished manifold proven from many dyno sessions, back to back runs, and track times, please don't order one from SRH. To get some perspective on head porting, we turned to Gavin Knisely. 650”lift, with 300cfm at. (1) head only, no other parts included. If the heads are ported to the max the resulting power band will be very narrow. (iron+alum. Stage 1 Ported Big Block Chevy Cast Iron Holley Intake. 880'' (11/32'') Valves World Products Big Block Chevy Merlin III Cast Iron Cylinder HeadsAssembled w/1. 55" exhaust valves and have bronze valve guides. com site are generated at 25" H20, which is not a standard test pressure. Flow measured at 28" of depression. Cylinder Head Specifics. 6:1 compression. Why buy a set of heads with the wrong parts when we can build you a custom ported set of heads complete, ready to bolt on with the right parts. Another popular head is the 200cc Dart Iron Eagle Platinum series. The best out-of-the-box head for the money! Excellent flow produces broad torque and killer power. Install cast iron guides Install bronze guides (includes hone fit) V8: $160 * V8: $275 * V6: $156 * V6: $260 * Inline 6: $138 * Inline 6: $260 * Inline 4: $110 * Inline 4: $238 * Apiece: $45 * Apiece: $55 * *Does not include price of guide: Flow test heads: $98: Straighten heads: $90: Install hardened valve seats: $14 each plus price of seat: Surface grind: $40 each: Mill heads:. small block with a cast single 4 barrel intake manifold. Shelby FE Aluminum Heads are cast from A-356 aluminum, heat treated to T-6 hardness level and precision CNC machined. AFR's 195cc "Street" heads feature 100% CNC ported intake, exhaust & chambers, A356 aluminum castings and high quality components throughout. Reshaping cast-iron is a very tedious and time-consuming task and is one of the reasons most performance cylinder heads are made of aluminum. The dual plane intake has a longer runner length and will make more torque for your combination. - Pontiac Cast Iron Cylinder Heads BP ports more Pontiac cylinder heads than anyone in the world. The Vortec heads require a different intake manifold, and Car Craft chose an Edelbrock Super Victor. With the P51, the idea was to incorporate the gains made in port development on the Super Cobra Jet into an all new casting; essentially, the P51 was to be an "as-cast" piece designed to resemble the ports of a fully ported Super Cobra Jet. Optimal port design for greater flow, better atomization & enhanced dynamics. Also For Sale:. World Products Small Block Chevy Sportsman-II Cast Iron Cylinder Heads The Easiest Way to Bolt On 30-70HP! Completely Race Prepped, Ready to Bolt On! Continuously improved since its 1987 introduction, the World Products Sportsman II is still the industry's most popular cast iron high performance head. Epoxying of intake ports is very common in racing cylinder heads to relocate/reshape the intake side. Machinist's bluing is used for this. These heads can be ported for optimum performance on a 450 HP street engine or a 700+ HP racing engine, and everything in between. How to Port and Polish Big Block Chevy Heads by Richard Rowe. The Innovative 3V 185 is in a class of its own amongst Cleveland Cylinder Heads. Apparently, this experimentation resulted in the master for today's Mopar Performance P4452758 cylinder head. The Iron Eagle is available with either a high-velocity 308cc intake runner that produces incredible torque or a 345cc version that's perfect for big-inch, high. Technical instructions for assembled & bare head part numbers: 030040 I-043D Bare head, 26°valve angle, 269cc intake runner, 119cc chamber 030040 - 1 Assembled head, for Hydraulic flat tappet camshaft 030040 - 2 Assembled head, for Mechanical flat tappet or hydraulic roller camshaft. World Products 030040 - Cylinder Heads Cast Iron Chevy Big Block MERLIN 269cc Oval Port 269cc 119cc 26Degree 2. 60 Exhaust valve and they are set up for a flat tappet hydraulic cam. Why buy a set of heads with the wrong parts when we can build you a custom ported set of heads complete, ready to bolt on with the right parts. that was many years agothen #292 turbo heads started taking over, then cast-iron 034 Bowtie heads, then Brodix aluminum heads, now Chevy 15 and 18 deg -----MaxRace Software Meaux Racing Heads ET_Analyst for DragRacers Support Israel - Gen 12:3. Cast iron is cheaper alumnum is lighter, take for instance Ford Racing´s GT-40 heads the aluminum ones weights 22 pounds, that is 25 pounds lighter than their cast iron GT-40 counterparts. Epoxying of intake ports is very common in racing cylinder heads to relocate/reshape the intake side. Completely CNC machined, the Iron Eagle 23° 227cc CNC heads offer ultimate consistency and performance. Aluminum On the subject of drag race cylinder heads, there’s considerable debate over which material—aluminum or cast iron—provides the ultimate power advantage. Cast Iron Ford SB Head, 58cc/180cc, Bare, World, Windsor 200 Cast Iron Ford SB Head, Unassembled Kit. Not exactly ideal for a streetcar. The castings then begin the porting process on a CNC machining center. If a vehicle was ordered with as "high-performance" with a big block, that engine received rectangular-port heads. Engine Porting Kit can help your engine generate more power When serious engine builders "blueprint" an engine, they'll "port" or smooth-off rough head castings around the intake and exhaust ports for improved, smoother air flow. The complex and sensitive shapes required in porting necessitate a good degree of artistic skill with a hand tool. Each component undergoes a detailed manufacturing process that involves the hundreds of calculated and precision steps to ensure the finest quality possible. This 56 piece set offers the most complete cylinder head porting kit available. CNC upgrade includes Ferrea stainless steel valves, Comp Cams lightweight tool steel valve spring retainers, heavy duty valve springs and 10 degree locks. Read the tech article on Do-It-Yourself Small-Block Cylinder Head Porting, brought to you by the experts at Chevy High Performance Magazine. UnderCover cast iron cylinder head modification, acid porting vortec cylinder heads & manifolds. It is common knowledge that Ford engineers struggled a great deal when it came to port sizing. Further enhancements can be found by the pro's how know the head. Description. Gavin is a well-known Southern Ohio puller that gained a lot of practical experience porting his own Cummins heads, discovered he had a knack and eventually start doing it for others. Requires 4 HP engine w/ M14-1. Racing Head Service. Porting at Home The stock 429/460 iron heads in this story represent an interesting challenge. Porting available. My ported chi4vs had flow no. As with most Ford heads, the intake port is plenty generous if not a little on the large side. In all the years of specializing in cylinder head designing and rebuilding, one thing that we have learn; regardless of the care in assembly and quality of your engine components, the most important steps toward high performance are found in the cylinder heads. Uses long-lasting, high-end silicon carbide seals that are specially suited for heavy-duty applications such as pumping contaminated and abrasive fluids. The head studs are 7/16" instead of the Triumph's 1/2" studs so will need to be up sized. The support from the racing community, family, friends, customers and vendors is appreciated during the last few years. -----799 Vs. Rugged pump features a hardened steel cutter blade that grinds the solids and a Noryl vortex impeller that propels material out of the pump. Horsepower Heads is far more than a traditional cylinder head porting company… Our point of difference comes from fully understanding the purpose of your engine and the application in which you will be using it. “The Oldsmobile V-8 engine is not dead,” says engine builder Brad Wise of Wise Performance Engineering. I do have the Stock port size manifold set up, from A&A, along with the cast iron exhaust manifolds. Standard valve angle and spacing is retained for bolt-on compatibility. Dart Iron Eagle S/S 23° 170cc late model and Vortec style heads produce great throttle response and low to mid-range torque for street performance engines. This is a ported pair of "as-cast" 325-cc port AFR heads. If the drill has enough speed, it will probably get you through a set of heads without too much delay. Small Block Ford Canted Valve Cylinder heads for Windsor Series engines. Combustion chambers are engineered for optimum swirl and quench right out of box. Why buy a set of heads with the wrong parts when we can build you a custom ported set of heads complete, ready to bolt on with the right parts. This is why most shops offer head porting in different stages. They do not look like the World SR torquers. Once ported any "advantage" the 241 cast had is moot. Instant cheap 40 plus HP. 400"intake valves,1. the AFR185s are also good heads, and a good low cost aluminum head. We are always looking for new castings numbers. also flowed under advertised. We had to use a cast iron manifold and a 2 barrel carb. Only the last 8,594 cars were believed to have the aluminum heads, this included all the pace car convertibles. Barnesville, GA 30204. Note: We will do some porting on other iron heads but this is somewhat a risky business. Would I Be Better off Selling Them. The casting number is located on the right of the head, between the second set of rocker studs. The Vortec heads require a different intake manifold, and Car Craft chose an Edelbrock Super Victor. Buzzy Adams – 2008 WISSOTA Modified Champion Long Brothers & Setzer – NASCAR Late Model Stock. Trick Flow Specialties is a leading designer and manufacturer of high performance cylinder heads, intake manifolds, and engine components. -Both heads remained the same until Summit purchased TFS. It's nice to not have to worry about hitting water when you're porting!. Worlds Windsor-series cast iron cylinder heads provide a very cost-effective solution to getting serious power from a Ford 5. I now understand the reasoning for your change and agree with it (especially because of the crankshaft strength- makes sense). 60” Exhaust valves Designed with smaller chamber than cast iron open chamber 340/360 heads. I had them ported and polished and I love them. Skip navigation. Lobe separation: 112 to 116 degrees Split pattern: Exhaust duration and lift approximately 10 degrees and. Porting at Home The stock 429/460 iron heads in this story represent an interesting challenge. Note: We will do some porting on other iron heads but this is somewhat a risky business. World Products 053030 - Cylinder Heads Cast Iron Ford Small Block WINDSOR JR. This cylinder head was also warped in the same manner. There are d-port heads and round port heads. At that time, nearly everything was cast iron and if you did have enough money to purchase one of the few aluminum heads available, they were in raw form. We'll show you how to port and polish your car's stock heads and spend less than a hundred bucks!. Intake flow was improved over previous engines by straightening out and optimizing the flow path from the intake manifold into the cylinder heads, while the exhaust ports are designed for greater flow. World Products offers. The Innovative 3V 185 is in a class of its own amongst Cleveland Cylinder Heads. Each component undergoes a detailed manufacturing process that involves the hundreds of calculated and precision steps to ensure the finest quality possible. Racing Head Service (RHS) offers CNC-ported cast-iron cylinder heads for small-blocks. Product Description. UnderCover cast iron cylinder head modification, acid porting vortec cylinder heads & manifolds. 1L / 496 engine. Some will certainly argue that the best was saved for last. As has been noted, these aftermarket heads flow better than ported cast iron pieces. Maximum performance/full competition, unlimited oval and super classes. com site are generated at 25" H20, which is not a standard test pressure. (1) head only, no other parts included. Extreme Port Job for Cylinder Heads:$1500 for aluminum. Dart Machinery, LTD. The cast iron cylinder heads used for both 428 Cobra Jet and Super Cobra Jet engines from 1968 through 1970 (part number C8OZ-6049-K) are easily identified by casting number and physical appearance. After the 1974 model year, all M-block cylinder heads cast at the Cleveland Foundry have an “M” cast into the top corners of the head. Vortec Bowtie Cylinder Head Technical Notes: • Cast-iron Large Runner Cylinder Head • 66cc combustion chambers • 0. Removing the fl aws and imperfections that are found on OE heads and manifolds can improve air fl ow, allowing more air to reach the combustion chamber. NHRA Accepted for STK & SS The new BBM FE engine block is significantly stronger than the stock block and is ideally suited for both restoration and high performance purposes. All crack repairs are tested and repaired by our. New tips and information can come at any time. Vortec Heads outflow Bow Tie Heads right out of the box and are a 20 to 40 horsepower bolt-on increase over earlier cast iron small block heads. After flow testing, the head goes back into a final machining phase where we re-touch the valve seats one last time with cutters (to remove any unwanted nicking from the porting) and then the head is set up in the surfacing machine. Rose hand pump - Top. Pro Filer All American Small Block Ford Heads with 205cc Intake Runner, 2. Other drawbacks include weight (iron), large open chambers, a poor flowing exhaust port, and lack of flow above. 1,000HP V12 LS + $5,000; Alloy block (564 ci / 9. That core shift ALWAYS reduces the air flow in the port. Lobe separation: 112 to 116 degrees Split pattern: Exhaust duration and lift approximately 10 degrees and. 320cc Intake runner and 119cc combustion chamber. Total Engine Airflow specializes in CNC-PORTED aluminum cylinder heads, custom cylinder head assemblies, and support components for GM, Ford, Mopar for street/strip, competition, and racing applications. Cast iron cylinder head for circle track & nostalgia drag racing applications. **Can hot tank/machine clean like in last photo for an additional $150** We have hundreds of bare cylinder heads available for purchase. Machine capabilities for precise and accurate tolerances to ensure top-quality performance, durability and longevity. But for an ultimate performance small bore head, it turns out the 202 and std 998 head is the best to modify. WE can now do CNC porting on cast iron heads and have already done a few sets of small block heads. The guide for the stock exit port is the most up to date yet. Considering the purchase of a pair of ported Buick cast iron heads? If your not purchasing Champion CNC series, then you are not getting the most complete, consistent, and accurately machined Buick Iron Heads on the market today!The process begins by sele. Heads are Ca emission legal and bolt right on any 5. Cracks unseen by the naked eye are clearly visible during an ultra violet crack test. 550" Dual Valve Springs for Hydraulic Roller Cam (Each). Making big chips in cast iron with a CNC lollipop porting tool! This is a @compcamsofficial RHS 14 degree SBC Porter core which we will CNC port to 275cc for this particular job. BBM Aluminum FE Engine Block The new BBM FE engine block is significantly stronger than the stock block and is ideally suited for both restoration and high performance purposes. See our Intake manifolds - Ford. Vortec Bowtie cylinder heads are the most powerful cast-iron heads offered by Chevrolet Performance. Dart Iron. In a street motor environment, cast iron seats have been tried and usually have been found to work okay with titanium valves. Lastly we offer our 3V heads in cast iron for those classes of racing where alloy heads are not allowed. The second worse thing about cast-iron heads, especially big block Chevy aftermarket heads, is the weight of those Heads! In the process of porting those type heads, I might turn or flip the heads on my porting bench around 50 to 100 times in various positions. Flow data listed on the www. High Performance cast aluminum heads for small block applications.