porting oldsmobile headsporting oldsmobile heads

Complete w/ Brodix Severe Duty 2.375 2 Brodix Race Rite 365 -385RRX square port complete heads. Tests performed same day at delta P= 28" Hg Edelbrock heads ported by RR flow virtually identical to those ported by M at valve lift above 0.400", but at 0.200" lift, M porting yields 20% better flow than R porting. The 1972 W-30 H heads are probably the rarest; the 1970 W-30 F heads are not quite as rare. Performance cylinder heads enhance the airflow into your engine, giving you improved power and torque. Research, compare, and save listings, or contact sellers directly from 160 Oldsmobile models in Rahway, NJ. THE ONLY WAY TO ACHIEVE EQUAL FLOW AND FILLS ALL CYLINDERS THE SAME WAY, WHICH YIELDS HIGHER HORSEPOWER AND HIGHER TORQUE NOT SEEN WITH OTHER HEADS. Bulletproof Big Blocks by Chris Hemer, Popular Hot Rodding If your 455 Olds needs a booster shot, then its time to call The Doctor. 0000369701 00000 n Putting a higher flow head with 220cc runners on a relatively stock 350 would be going in the wrong direction. These heads were a good bang for the buck with room to grow vs the cam that I am running. All of the small-block combustion chambers have roughly the same shape, but vary in volume. SPRINGS,LOCKS, RETAINERS, STUDS,GUIDEPLATES, AND VALVES. We then basically put those dimensions into our cylinder head, and then worked around the port and chamber dimensions to make everything fit within in Oldsmobile platform, he says. The heads are making really good power. Valve profiling and flow sheet included. This modification is easily performed during the valve-job operation and turns an old, rusty, worn-out cylinder head with pitted seats into a set that is in brand-new condition. Good middle of the road plug, not too expensive, high quality, regularly stocked everywhere. Oldsmobile. Includes a multi-angle or radius Serdi cut valve job on both heads (seat cutting only). Cam is an old grind, smaller base circle 234/244 .520 .542. During the early 70s, this winning father-son combination went to work at the Parker Dam 9 hour enduro, winning the Jet Boat class with an Olds 455 in 1972 and in 1975 & 1976, back to back wins with a 500 c.i.d. With the racing we do, we spin the engine up to 9.500 rpm or more, and we needed a cylinder head that would handle the piston speed. Dont ever let anyone tell you that you dont need a receiver groove in these copper head gasket/O-ring applications. Molding two designs into one proved more challenging than expected, but hard work and solid engineering principles made the Z head a reality. You do. Many variables will be included in your engines blueprinting process such as; type of camshaft, crankshaft, cylinder head porting and polishing, multi angle valve jobs, balancing, intake (port matching), pistons etc. Filling the exhaust heat crossovers can never hurt. The Stage 1 head is fully CNC-machined and is delivered with 5/16-inch bronze valve guides and iron seats. RRP ROCKER STUD GIRDLES ARE AVAILABLE FOR ROCKET RACING CYLINDER HEADS. You must choose UPS Ground to help ensure your order arrives before Christmas. We deliver reliable horsepower, torque and drivability. Wise based his Olds cylinder head development on the port shape of the venerable Chevrolet SB2 cylinder head design. 0000000607 00000 n Rebuilding Your First Engine by Joe Mondello This is a six part article with step-by-step instructions. We use cookies to provide you with the best possible user experience. We also do 1,2,3,4,6,10, and 12 cylinder engine head work. With the right seat cutters, the bowl is larger and the bowl shape allows a better transition for the air/fuel mixture to exit the valve, thus increasing available horsepower. Edelbrock recommends a Champion plug in their info for the head. THESE HEADS WILL HAVE 2.190 INTAKE AND 1.72 EXHAUST VALVES. Race Recondition: $350 Complete recondition of cylinder heads with a Serdi cut valve job, surface mill, cleaning, inspection, re-assembly and new valve seals installed. I sent the head out to them and had them build their complete shaft-style rocker system on it. Makes buying a bare set less tempting. Our Cylinder Heads are built and assembled in-house at our facility in California. WebSpeedmaster CNC ported cylinder heads are machined on dedicated 4-axis and 5-axis CNC machining centers to ensure accuracy and cost effectiveness. These gaskets basically consist of two layers of embossed hardened steel and a shim of desired thickness between. These heads are capable of over 400 cfm airflow. A Heads Shop is located at 4101 Bergen Turnpike, North Bergen, NJ 07047, A Heads Shop is open:Saturday: 8:00 AM - 8:00 AM Sunday: Closed Monday: 8:00 AM - 6:00 PM Tuesday: 8:00 AM - 6:00 PM Wednesday: 8:00 AM - 8:00 AM Thursday: 8:00 AM - 8:00 AM Friday: 8:00 AM - 8:00 AM. Pro Sportsman Porting Work- Call for Pricing! These gaskets are pretty much available in any thickness and bore size when you custom-order them. The Oldsmobile V-8 engine is not dead, says engine builder Brad Wise of Wise Performance Engineering. WebShop Oldsmobile vehicles in Rahway, NJ for sale at Cars.com. They already have induction hardened seats and flow almost as good as C's. Includes cutting a back angle on the valves at a specific degree. Some of our popular builds are: Edelbrock Performer RPM Olds Edelbrock Performer RPM (Stock & Super Stock) Contact Us Operating within the idle-5500 rpm range - they fit the bill perfectly. Horsepower Secrets by Chris Hemer, Musclecar Review How to make a stock-looking engine run like the wind. Just bolt on a set of complete heads for instant power - cos we've done all the hard work for you! WebThe Olds head can gain about 80% of its total potential flow by matching ports on intake and exhaust side (yes grind out those headers), removing A.I.R. Stage III: $850 Our "strip" port job - the best bang for the buck. Stage II: $500 Suggested porting for most intakes. Dont stress out over the finish; just leave no rough cuts. Terms|Privacy, Oldsmobile Motor Cylinder Head Guide | CarTech. By raising everything up, we now have a cylinder head that flows just as good as the SB2 or R07 or anything else out there, explains Wise. When they do fail in these applications, it usually ruins something like the block or the cylinder head. This tells you if both heads are milled the same amount and if those decks are straight. By continuing to use our site, you agree to their use. The Edelbrock 455 Olds manifold bolts right on. Plus, you can turn up the horsepower even more by choosing heads with CNC-ported runners and chambers, CNC-profiled chambers and other enhancements. JavaScript seems to be disabled in your browser. The ultimate setup in cylinder sealing is the copper head gasket with a stainless O-ring embedded into the cylinder head, with a corresponding receiver groove machined in the block. WebCompetition Components 4406 Van Atta Rd. Those were the days when you started a race with a flag man starter, not a Christmas tree. We also use third-party cookies that help us analyze and understand how you use this website. To provide a better shopping experience, our website uses cookies. Our EFI systems provide excellent throttle response throughout the RPM range along with smooth engine operation. These guys have alot of experience and helpful and cheap, Nirmal is a good guy with alit of experience, Worst experience nasty attitude doesn't take responsibility he has had my motor for 8 months for 30 over bore hot tank and flycutting pistons had to return motor 3 times found metal shavings in motor motor was dirty and stay away from nirmal stay away. Always remember, at Mondellos you get what you pay for: Horsepower, not promises. All rights reserved. Estler's Mortgage Lifter tomato is one of the most popular heirloom varieties that is perfect for home gardeners. The heads are offered in four different configurations, from a basic CNC-chamber, CNC intake/exhaust port design that flows 340 cfm on the companys Superflow SF600 flowbench all the way up to the big-dog 400-plus cfm max-effort cylinder head designed for all-out racing applications. WebPro-Port Raw heads are semi-machined with finished accessory, intake and exhaust flange bosses. Rated 5.00 out of 5 $ Add to cart $ 995.00 Add to cart; Home; Parts. CUSTOM ENGINEERED GUIDEPLATES FOR THE ABSOLUTE BEST ALIGNMENT. 403 Olds Engine Building by Cam Benty, Popular Hot Rodding More tips on a 403 buildup. A good option for ported heads. They include almost everything you need to make serious horsepower. The heads are offered in four different configurations, from a basic CNC-chamber, CNC intake/exhaust port design that flows 340 cfm on the companys Superflow SF600 flowbench all the way up to the big-dog 400-plus cfm max-effort cylinder head designed for all-out racing applications. For the ultimate in Street Performance, look no further than the Outlaw Series. Stock-type steel big-block Oldsmobile valves are available through SBI and other sources and are relatively inexpensive. Includes port matching. Item is a matched pair of 1967-68-69 OldsmobileC code cylinder heads that have been stripped and prepped for a performance rebuild. Copyright 1999-2023 SteveSchmidtRacing.com. You also have the option to opt-out of these cookies. Joes first car was a 40 Ford coupe with a 303 c.i.d. In order to shop on this Web store, you must have JavaScript enabled. Not a lot of flow yet as there's no real work in them yet They're going on a 461, cn crank, stock rods, arp head, rod, main bolts. Some manifolds may not have enough material and runner volume to match, but the Edelbrock Victor (PN 2812) does. I only use these on cast-iron head engines. It looks like you could go huge on the exhaust ports, but I know that sometimes going too big actually kills velocity. That gasket performed very well at 11:1 compression and I never had a gasket failure. For the best experience on our site, be sure to turn on Javascript in your browser. CNC combustion chambers offer superior control over flame travel and quench area. Stage III: See below for pricing Complements any head porting for maximum horsepower. Feel free to contact us for any custom quotes. Unfortunately, they are not available anymore. WebOldsmobile factory-production big-block cylinder heads are identified by a letter cast into the front lower portion of the head on the number-1 and number-8 cylinders. 0000000853 00000 n Not intended for street application. We'll assume you're ok with this, but you can opt-out if you wish. Speedmaster crate engines have become a huge success all over the world. 2023 CarTechBooks. Until then, my serious engines are sealed by this method. Today, Chevrolet performance cylinder heads still utilize the identical combustion chamber, which Joe designed in the early 1960s known as the Posi-Flow chamber. Using only high-grade components, our team of machinists and engineers with 40+ years experience get the job done with quick turnaround time and proven precision and assured quality control. Virtually every set of Procomps I sell/install get 2.125 intakes because the bowls are more conducive to that valve size. Joe Mondello designed open chamber big and small block Chevy cylinder heads and pistons long before Chevy did. Mondello Performance Products, Inc. 1103 Paso Robles Street Paso Robles, California 93446, Toll Free Order Line: 877-322-4489 (Ordering with part numbers only). Options include stainless or titanium valves, beryllium valve seats, and a T&D 1.7:1 or 1.8:1 shaft rocker system thats been developed specifically for this application. They are available in .028 and .040 thicknesses. If you bolt a set of big-block heads on a small-block, its like bolting on a ported head. CHECK OUT THESE OUTSTANDING FEATURES: RAISED EXHAUST PORTS THAT ACCEPT STANDARD FLANGES. To learn more, view our, For the ultimate in performance, our E-CNC cylinder heads are the answer. We will safeguard your e-mail and only send content you request. Head Build Kits include the following: Intake Valves, Exhaust Valves, Valve Spring Retainers, Valve Locks, Valve Springs, Valve Stem Seals, and Valve Spring Locators. Rocker arms and other supplemental parts increase the price as well. Sweet, Growing Peppers in Your Garden: Tips, Hardening Off and Soil Mix, Growing peppers is a great way to spice up your garden. Web2- New Casting the 370 are factory ported cast from a 375X port this is a 2 new BB/C Pro Filer 385X racing heads. The perfect cylinder head, designed for entry-level that results in great driveability, power and economy. I have had various issues with them. The same goes for the intake and exhaust ports on the muscle-car-era castings. Those Shelby Ford Cobras, 1st, 2nd, 3rd & 4th places respectively. Mike is a great guy. But what can we do to help? WebALL ROCKET RACING CYLINDER HEADS ARE BUILT PER CUSTOMER APPLICATION.PLEASE CALL TO ORDER. THIS IS JUST A SAMPLING OF THE MANY FEATURES THESE HEADS HAVE. The lowest combustion chamber volume I ever had on an Edelbrock Performer RPM head with the standard combustion chamber was on the 2009 Engine Masters Challenge engine at 46 cc. Unsung Hero by Scott Parkhurst, Popular Hot Rodding The 403 Olds may be the most overlooked performance engine ever. After lots of trial and error, plenty of burned welding wire, measuring, testing, fitting, and hair-pulling, he finally settled on dimensions that made sense for the Olds platform, and would provide an opportunity for both street and race customers to step into the 21st century in terms of performance and airflow capability. Standard full port goes about 250cc and flows over 340 cfm. This website uses cookies to improve your experience. I've blown my wallet on e-brocks in the past, so we'll see if I'm disappointed this summer. WebAt the end of the day, pocket porting may not produce the fastest-looking set of heads or the most photogenic, but the results can be very satisfying. Intake and 1.680 in. Speedmasters 6-71 Street Supercharger kits can give you 45-55 percent more streetable power. Throttle response and power range from 1500 - 6500 RPM. Speedmaster Cylinder Head parts have been assembled with the finest premium components to provide your engine with optimal airflow for maximum engine performance. But opting out of some of these cookies may have an effect on your browsing experience. Peppers take longer than tomatoes to get going, so start them first. FULL RADIUS CNC 75 CC CHAMBER TO PROMOTE COMPLETE COMBUSTION, STOCK APPEARING BOLT BOSES FOR ALTERNATORS, ETC. Jason draws on over 15 years of experience in the automotive publishing industry, and collaborates with many of the industry's movers and shakers to create compelling technical articles and high-quality race coverage. 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I plan on finding a GT-40 upper and lower intake. Porting at Home by Michael Lufty, All Chevy Head Wizard Joe Mondello offers tricks of the trade. 1101 W. Rialto Ave. Rialto, CA 92376, USA+1 (310) 361-0020, 23 Mount Erin Rd,Blair Athol NSW 2560, Australia+61 2 9607 2299. The store will not work correctly in the case when cookies are disabled. WebPorting an Oldsmobile Small Block Head 2,618 views Sep 9, 2021 57 Dislike Share Junk Dump 352 subscribers Watch me port an Oldsmobile small block head. Edelbrocks Pro-Port Raw Cylinder Heads are purpose-engineered castings for custom racing engines. This happens either because the combustion seal is compromised or the head does not sit flat due to improper machining. The big-block and diesel engine blocks also used a 3.000-inch main bearing diameter over the small-blocks main bearing dimension of 2.500-inch. Project Murderous Overkill by Christian Hazel, JP Magazine The Mondello Monster. We wanted to keep the design as close to OEM specs as possible so that guys could bolt these on using existing components, but have a chamber design thats modern. There is a spacer system to make everything work with a big-block Olds. The most desirable small-block Olds cylinder heads are the number-6 and number-7 castings. SpeedmasterTM kits bring together everything you need. These MLS gaskets are made to order from Cometic and take about four weeks to produce. WebEdelbrock RPM Olds 455 Head Porting HeavyOlds 268 subscribers 642K views 15 years ago The scariest thing I ever did was port a set of new Edelbrock aluminum cylinder heads. If you have him do a full port job, you will not be disappointed. The Oldsmobile factory-production small-block cylinder heads are identified by a number cast into the front lower portion of the head next to the number-1 and number-8 cylinders. Copyright 1995-2023 Rocket Racing & Performance LLC. Using the experience he gained while racing in the NMCA and supporting his customers all over the world, Wise made the decision to investigate a new design that would provide some room for growth and the Z heads are the result. They require that the decks be flat and smooth. Joseph Mondello passed away in April of 2011, but he will always be known for designing, building and providing us all with the best high performance products money can buy. ***CALL FOR PRICING DUE TO NATONAL SHORTAGE ON PARTS AND MATERIALS***CUSTOM - SPECIAL MACHINING or ENGINEERING BY QUOTE. Hb``d``Z @KrB10Z&00040Dscc` '00 endstream endobj 35 0 obj 69 endobj 25 0 obj << /Type /Page /Parent 19 0 R /MediaBox [ 0 0 676 927 ] /Resources << /XObject << /Im0 29 0 R >> /ProcSet [ /PDF /ImageC ] >> /Contents 26 0 R /PieceInfo << /AdobePhotoshop << /LastModified (D:20120817155034-08'00')/Private << /RoundTrip 1 /ExportCrispy false /SaveTransparency false /ImageResources 30 0 R /XObject << /Im0 29 0 R >> /StandardImageFileData 31 0 R >> >> >> /LastModified (D:20120817155034-08'00') /CropBox [ 0 0 676 927 ] /Rotate 0 >> endobj 26 0 obj << /Filter /FlateDecode /Length 27 0 R >> stream When you remove a cylinder head torqued up with a copper head gasket, you literally have to pry the gasket off the block because the soft copper embeds into the receiver grooves, which is what seals the combustion pressure. Hopefully somewhat impressive or at least an improvement over the small valve heads I pulled off. you have a ported head. Trust me, when the job is done properly, there arent any sealing issues in the highest-horsepower applications. JavaScript is disabled. Speedmaster line of EFI systems is all you need when deciding to upgrade your engine to modern electronic fuel injection. If you want a free port job on your small-block Olds heads, put the die grinder down. My #6 heads probably flow close to the first numbers. 440 Olds Stroker Small Block Photos by Chris Hemer, Popular Hot Rodding The strong arm solution for weak-kneed 350s. If you need it to be more exact, you have to check multiple times, as the head is shaved. As the Oldmobile engine was offered in both small-block (9.330-inch deck height) and big-block (10.625-inch deck height) with no other changes to the basic architecture, the cylinder heads works on either combination without any issues. The stock cylinder head and other designs on the market are capable of flowing about 320 cfm, but above that, and above .650-inch lift, they become inefficient and the airflow becomes very turbulent because of the chamber design. Quality is assured with 40 years experience in the Differential Industry and full involvement in all forms of motorsport from V8 SUPERCAR To Group 1 Drag Racing. We designed this stuff a few years ago, and just recently put them into production and have had some great results out of them. These cylinder heads can certainly be made better with some work, but it is generally best to use the older castings. The traditional Oldsmobile V-8 is unique, in that both small- and big-block versions can share the same cylinder head castings. Corteco makes some high-quality gaskets. Assembly has been carried out at the Speedmasters TDS Department by the Head differential technician. Also available from WPE are exhaust flanges, valley trays, and every other part youll need for installation. Side & Ream Head Bolt Holes, Finishing of Custom Unfinished Race Block, Machine / Align Bore for Big Ford Cam Bearings, Balancing V-8 Assemblies (Heavy Metal to Balance Additional Time & Material), Intake Match, Bowl Blend, Polish Chamber& Exhaust Port (Pr). Once cookies are enabled please refresh the current page. My question is how far can you port these heads? In the early 1950s, before Joe was 17 years old, he had already ported & relieved more than 50 Ford flat head blocks for the finest engine builders of that era. Heads are available with bronze guides and iron seats, with a beryllium-copper seat available for max-effort applications. Pricing is for traditional V-8 cylinder head pairs. FLAT TAPPET OR HYD. The best head gasket in 98 percent of high-performance Oldsmobile applications is the Cometic MLS head gasket (multi-layer steel). This method brings you pretty close. 23 0 obj << /Linearized 1 /O 25 /H [ 680 173 ] /L 1192708 /E 370195 /N 3 /T 1192130 >> endobj xref 23 13 0000000016 00000 n Competition valve job: $200 A must for improved flow. Combustion Chamber, Exhaust and Intake Ports all fully CNC machined for better flow. $3795. // Ported. It'll pass anything except a gas station :-). But I have not had a failure with these gaskets on cast-iron cylinder-head engines. Heads Shop is located at 4101 Bergen Turnpike in North Bergen, New Jersey 07047. Most Olds folks seem to prefer theC heads for their added performance and better flow. For instructions on how to enable cookies, please see the help section of your browser. Even at that small 46-cc level, the cylinder head seemed to have adequate deck thickness for the 640 hp that the particular engine produced. One such individual is Brad Wise of Wise Performance Engineering. Most Olds folks seem to prefer theC heads for their added performance and better flow. If you get a set of roller rockers that don't require any machine work to install, you can put them on It is the same method used by 5,000+-hp NHRA Top Fuel cars. Contact us for your application and pricing. As well as port matching. When milling your cylinder heads, make sure that the machine shop machines the deck surface parallel to the valve-cover rail. Seen here are two angles of the intake port. CNC ported w/ 5 angle valve job. The deck thickness and stiffness required on the cylinder heads has to be determined according to the amount of horsepower the engine can produce. Stage I PM: $300 Our "street" port job - a minimum recommended porting stage. Comes completely assembled with roller cam springs speced out The cylinder head is machined so that the stainless .041-inch-diameter O-ring protrudes .015 inch up from the deck, and the corresponding .040- to .060-inch-wide receiver groove is machined at the same depth into the block. Stage III: See below for pricing Complements any head porting for maximum horsepower. For the more serious street application, the SuperStreet Series boasts high quality intake and exhaust valves and valve springs suited for daily drivers and tough street machines. ALL ROCKET RACING CYLINDER HEADS ARE BUILT PER CUSTOMER APPLICATION.PLEASE CALL TO ORDER. Made from the finest material, with total in-house manufacturing in our ISO-9001 certified California-based facilities. EFVU(eufv7GWgw8HXhx)9IYiy*:JZjz m !1AQa"q2#BRbr3$4CS%cs5DT Copper head gaskets can be purchased from numerous suppliers such as Clark, Hussey, SCE, and Flatout Gaskets and should be ordered with a gasket-bore size .050-inch larger than your engine bore. Multi-layer steel gaskets made by Cometic are the ultimate in combustion sealing. A head with 180 or 185cc intake runners will work well on a typical 350 Chevy street engine that makes 400 to 450 horsepower. As well as port matching. 1979 2023 Speedmaster. They prefer warmer temperatures and drier, Take Action Now: How You Can Fight Climate Change and Protect Our Environment, The Effects of Climate Change on Our Environment Having a decent port in the thing to where it would flow and work forced us to raise the intake port up 1.750-inch, and then we raised the exhaust port about the same. Some of our popular builds are: Edelbrock Performer RPM Olds Edelbrock Performer RPM (Stock & Super Stock) Contact Us We use cookies to provide you with the best possible user experience. &6E'dtU7()euFVfvGWgw8HXhx9IYiy*:JZjz ? Description ***CALL FOR PRICING DUE TO NATONAL SHORTAGE ON PARTS AND MATERIALS***, HRE All Sheet Metal Intake Manifold for Dual Carburetors, HRE All Sheet Metal Intake Manifold for Single Carburetor, Edelbrock BBC "SSCE Custom" Super Victor Intake Manifold, Big Block or Small Block Chevy Aluminum Oil Pan, Moroso "Original" 3-Vane Racing Vacuum Pump Kit, Moroso 4-Vane "Enhanced Design" Vacuum Pump Kit, Manton Special 7/16" Heat Treated Pushrod Set of 16, Angle Mill Head Correct Int. 0000001493 00000 n Web440 Olds Stroker Small Block Photos by Chris Hemer, Popular Hot Rodding The strong arm solution for weak-kneed 350s. Orlando Fl. The combustion chamber in the WPE Z head mimics the design of the SB2, as do the exhaust ports. Necessary cookies are absolutely essential for the website to function properly. NO WATER BY PORTS SO PORTING IS INFINITE. 0000369682 00000 n The head has 1.125-inch decks, so were able to handle 2,000 horsepower blown and turbocharged combinations without any issues of the deck moving around. U WebWhile your engine is apart we will make suggestions on increasing horsepower and torque. H*-537S0 BK#s0k ] endstream endobj 27 0 obj 40 endobj 28 0 obj 361529 endobj 29 0 obj << /Type /XObject /Subtype /Image /Interpolate false /Filter /DCTDecode /Width 676 /Height 927 /BitsPerComponent 8 /ColorSpace /DeviceRGB /Length 28 0 R >> stream I have seen many engines use these in very-high-horsepower turbo and blower applications with varying degrees of success. EACH SET OF HEADS IS BUILT TO YOUR SPECIFIC ENGINE. Speedmaster El Rayo ignition system are designed for the enthusiast that is serious about performance but needs the small cap size due to space considerations when installed. hump in the exhaust port, clean up of the bowl area behind the valve seat, and tear So, which heads are the best performers, and how can you spot them? Coming along slowly.. it's a long winter. Joe celebrated over 40 years in the high performance manufacturing industry. When performing the O-ring and receiver-groove operation, location of the O-ring and receiver groove is absolutely important. Just choose your level of performance. BTR stocks the commonly used thicknesses, and they are available in .027-, .030-, .036-, .040-, .045-, .051-, .060-, .065-, .071-, .074-, and .120-inch sizes. These cookies will be stored in your browser only with your consent. Fully cnc'd. CNC HEADS ARE AVAILABLE FULLY CNC PORTED AT AN ADDITIONAL COST. Okemos, MI 48864 PH: 616.499.6223 Contact Us! COMING SOON IS THE ROCKET RACING TUNNEL RAM FOR OUR RRP HEADS!!! Includes bowl port. as well as profiling of the combustion chambers. CNC combustion chambers offer superior control over flame travel and quench area. Speedmaster cylinder heads offer great performance for less than it would cost to rebuild an old set.
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