" ?~`?|-wR]6SK0[.@#Y8FljVlUU J@L>} 8 A_'kN}JMx!M*~_YkkRaKA;CQ=U ?1Y-o)K ?YyFAiW7WTI *" 2D?ks,P)k!PCo* \?+0%/rD_Bt!e{IlI!|U8?!> 8z~Uj^[#2P#^W$*UWQ -TeE9\ Mike is a great guy.
Oldsmobile Horsepower Secrets by Chris Hemer, Musclecar Review How to make a stock-looking engine run like the wind. Putting a higher flow head with 220cc runners on a relatively stock 350 would be going in the wrong direction. Item is a matched pair of 1967-68-69 OldsmobileC code cylinder heads that have been stripped and prepped for a performance rebuild. Virtually every set of Procomps I sell/install get 2.125 intakes because the bowls are more conducive to that valve size. CHECK OUT THESE OUTSTANDING FEATURES: RAISED EXHAUST PORTS THAT ACCEPT STANDARD FLANGES. All rights reserved. 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
Filling the exhaust heat crossovers can never hurt. In order to shop on this Web store, you must have cookies enabled. Much like a Pontiac engine, WPE makes use of a valley tray with their design that is installed in the lifter valley to allow for intake installation and removal without affecting the cooling system. Always remember, at Mondellos you get what you pay for: Horsepower, not promises. 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. ALL ROCKET RACING CYLINDER HEADS ARE BUILT PER CUSTOMER APPLICATION.PLEASE CALL TO ORDER. In order to shop on this Web store, you must have JavaScript enabled. This category only includes cookies that ensures basic functionalities and security features of the website. 0000000607 00000 n
You also have the option to opt-out of these cookies. Sure as heck not going to put that kind of money into my gravity laden iron turd heads. Oldsmobile small-block cylinder heads have a number, like this popular number-7 casting cylinder head. DRILLED FOR 1/2" HEAD STUDS. WebOffering top notch Aluminum Cylinder Head Porting and Cylinder Block Machining Services for High Performance Racing Engines by Race Engine Builder Steve Schmidt. WebALL ROCKET RACING CYLINDER HEADS ARE BUILT PER CUSTOMER APPLICATION.PLEASE CALL TO ORDER.
Golden Rules of Porting Cylinder Heads - Part I have seen many engines use these in very-high-horsepower turbo and blower applications with varying degrees of success. All rights reserved. We use cookies to provide you with the best possible user experience. you have a ported head. JavaScript seems to be disabled in your browser. 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). A street port job will open things up nicely. 0000369701 00000 n
CNC finish faces and bolt holes for extreme accuracy, T6 heat treated gravity die cast construction (alloy heads only), OEM accessory bolt patters for simply compatibility, Plenty of material for upgrading to larger HP applications, Machined for screw in studs and guide plates, Flame hardened valve seats for use with all fuel, High Performance Street & Light Racing Application, Lightweight Valve Springs for maximum lift, High Perofrmance Chrysler 426 & 572 HEMI engines.
Ported All rights reserved. If you need it to be more exact, you have to check multiple times, as the head is shaved. CFM Performance Copyright 2023 - All Rights Reserved. Edelbrocks Pro-Port Raw Cylinder Heads are purpose-engineered castings for custom racing engines. Unsung Hero by Scott Parkhurst, Popular Hot Rodding The 403 Olds may be the most overlooked performance engine ever. We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. Until then, my serious engines are sealed by this method. Some of our popular builds are: Edelbrock Performer RPM Olds Edelbrock Performer RPM (Stock & Super Stock) Contact Us Head Porting At Home by Marlan Davis, Car Craft Professionally prep your own heads with Mondellos home porting kit. This ensures that the valve free-drop and combustion-chamber depth is even. Edelbrock Aluminum Cylinder Heads are ready to bolt on and go right out of the box. Combustion Chamber, Exhaust and Intake Ports all fully CNC machined for better flow. They are available in .028 and .040 thicknesses.
The 1972 W-30 H heads are probably the rarest; the 1970 W-30 F heads are not quite as rare. 1 PAIR OF ROCKET RACING CYLINDER HEADS. Stage II: $500 Suggested porting for most intakes. The impetus for the design came from, of all places, a look at the Chevrolet SB2-style cylinder head and its excellent-flowing, modern combustion chamber and port design.
For those racers looking for a head with 500+hp potential, this is it! SPRINGS,LOCKS, RETAINERS, STUDS,GUIDEPLATES, AND VALVES.
Edelbrock vs stock C iron heads 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. &6E'dtU7()euFVfvGWgw8HXhx9IYiy*:JZjz ? Stage I PM: $300 Our "street" port job - a minimum recommended porting stage. ***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. These cookies do not store any personal information.
There is a spacer system to make everything work with a big-block Olds. Climate change is one of the most pressing issues of our time, and its effects can be seen all around us. They require that the decks be flat and smooth.
Olds 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.
Cylinder Heads The nice job on these C heads came by pouring in melted aluminum from the port side and then porting the bowl properly. The traditional Oldsmobile V-8 is unique, in that both small- and big-block versions can share the same cylinder head castings. From Street to Race ready performance, weve got it all covered, Weve done all the hard work for you. These Hurst Olds D heads are some of the rarest Olds heads. 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. 0000001493 00000 n
This car is called the Hefty HEMI and will compete in the NMCA - Nostalgia Super Stock class! WebStage II: $500 Suggested porting for most intakes. We also do 1,2,3,4,6,10, and 12 cylinder engine head work. 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. We also use third-party cookies that help us analyze and understand how you use this website.
Mondello Performance JavaScript is disabled. We had T&D design the rocker system for these. 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. They already have induction hardened seats and flow almost as good as C's. Valve profiling and flow sheet included. Back when I ran the NHRA Stock Eliminator W-30 engine, I used the factory .017-inch embossed steel shim head gasket. In years past, I measured intake runner volume in a bunch of different-lettered iron cylinder heads, and found that the E castings were second in line to the J heads in small runner size. 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. Includes port match. Project Murderous Overkill by Christian Hazel, JP Magazine The Mondello Monster.
Porting SpeedmasterTM cylinder heads offer improved power throughout the rpm range for greater throttle response and top-end horsepower. Wise based his Olds cylinder head development on the port shape of the venerable Chevrolet SB2 cylinder head design. Comes completely assembled with roller cam springs speced out WebOldsmobile Cylinder Head Porting larger image We can machine, install upgraded components and port your Oldsmobile cylinder heads. CNC ported w/ 5 angle valve job. Today, Chevrolet performance cylinder heads still utilize the identical combustion chamber, which Joe designed in the early 1960s known as the Posi-Flow chamber. Includes port matching and blending of the plenum and its dividers. CNC combustion chambers offer superior control over flame travel and quench area. Head Build Kits include the following: Intake Valves, Exhaust Valves, Valve Spring Retainers, Valve Locks, Valve Springs, Valve Stem Seals, and Valve Spring Locators. A head with 180 or 185cc intake runners will work well on a typical 350 Chevy street engine that makes 400 to 450 horsepower. It looks like you could go huge on the exhaust ports, but I know that sometimes going too big actually kills velocity. WebOLDSMOBILE ALUMINUM HEADS 330,350,403,400,425,455. porting and polishing of the inside of the intake manifold. The obsolete factory Oldsmobile big-block .017-inch-thick steel shim gasket worked very well in my 11:1-compression NHRA Stock Eliminator engine. Orlando Fl. Developed by William Estler in the 1940s, this tomato is known for its large size, sweet flavor, and disease resistance. I dont have time to figure out why some companys product failed, especially when there is something else I can get my hands on that performs reliably. They worked like a charm. 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 0000000853 00000 n
These heads were a good bang for the buck with room to grow vs the cam that I am running. That gasket performed very well at 11:1 compression and I never had a gasket failure. Makes buying a bare set less tempting. Includes bowl port. Get Heads Shop can be contacted at (201) 223-2300. From there, Oldsmobile engineers took their shot at creating the best possible drag race head, and introduced the Oldsmobile Pro Stock head (PN 24502585). Stage V Competition: Standard valve angle, conventional style heads, Stage V Ultra-Competition: altered valve angle, competition style heads. Head Porting At Home by Marlan Davis, Car Craft Professionally prep your own heads with Mondellos home porting kit. THIS IS JUST A SAMPLING OF THE MANY FEATURES THESE HEADS HAVE. Heads come with 5 angle valve job. Includes complete reshaping of the intake and exhaust ports. All of the great drag race cars ran with Mondello. Trust me, when the job is done properly, there arent any sealing issues in the highest-horsepower applications. Yes, they have a ton of potential but need some work to get there obviously. We'll send you the most interesting Dragzine articles, news, car features, and videos every week. Churn out all the asphalt-chewing, road-grating horsepower you want with our massive selection of rotating assemblies! In my experience, it seems that the rest of the factory cast-iron cylinder heads (A through H) are close enough in runner shape and size so that it does not really matter which one you select for your high-performance Oldsmobile project, especially if you are porting them. Contact us for your application and pricing. 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. The famous C head is well known for being the best factory iron cylinder head to use, but I have not found that to be the case. Speedmaster has taken the guesswork out of top-end component selection by actually placing the top end components together in complete kits. 75 mm throttle body, A 90 mm mass, 24 or 30 lb injectors and a chip and tune after. By continuing to use our site, you agree to their use. 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
Valve covers, fuel-injection-capable 4bbl-style intake manifolds, and other parts to install the cylinder heads are also available. We will safeguard your e-mail and only send content you request. When they do fail in these applications, it usually ruins something like the block or the cylinder head. At my door for 2400$ Canukistan dollars (1830 us). The first 7,6 & 5 second Top Fuel runs and the first 200 mph runs in Top Gas, Top Fuel, Injected Fuel, Fuel Altered were all accomplished using Mondello cylinder heads and Don Garlits set most of these records, making Mondello the most notable, historically recognized heads. NO WATER BY PORTS SO PORTING IS INFINITE. 1979 2023 Speedmaster. Pro Sportsman Porting Work- Call for Pricing! Of all the factory iron heads I have played with, I have found the A heads to be the best in stock form.
Porting If its a 383 stroker, you can probably go with 200cc intake runners. Stage III: See below for pricing Complements any head porting for maximum horsepower. Stage V: See below for pricing Our "race" port job- for all out racing and maximum horsepower situations. Estler's Mortgage Lifter tomato is one of the most popular heirloom varieties that is perfect for home gardeners. Speedmaster cylinder heads feature as-cast ports in both alloy and cast iron and are designed for entry-level street/strip performance applications operating in the idle-to-6500 rpm range. The 2 columns are a before and after bowl porting/blending. Traco Engineering, known at the time for extremely fast Indy cars and various sprint cars, utilized Mondello heads exclusively. So give your heads a check with a set of vernier calipers to make sure that the deck surfaces are parallel to the valve-cover rail and the same as each other. I have milled factory iron, Batten, and Edelbrock Performer RPM heads as much as .100 inch for certain applications. I have seen many heads that have been milled unevenly, which throws everything off. 0000369682 00000 n
This factory iron big-block A cylinder head has the largest ports I have seen. The oldest castings (used on the 1965 400 to 425-ci engines) have the letter A, and the latest big-block production castings have the letter J. All rights reserved. Necessary cookies are absolutely essential for the website to function properly. These gaskets basically consist of two layers of embossed hardened steel and a shim of desired thickness between. Olds Oldsmobile 1969 BareC Heads / 455 / XLNT!
Heads are available with bronze guides and iron seats, with a beryllium-copper seat available for max-effort applications.
EDELBROCK CYLINDER HEADS With 2021 in full swing, many gardeners are looking for new varieties of plants to grow. Big race port is 300cc and hits 390 cfm. To learn more, view our, For the ultimate in performance, our E-CNC cylinder heads are the answer. It is the same method used by 5,000+-hp NHRA Top Fuel cars. All of the small-block combustion chambers have roughly the same shape, but vary in volume.
455 C heads vs Ga heads Heads Shop can be contacted via phone at (201) 223-2300 for pricing, hours and directions. This essentially blends all of the casting in the head for improved flow. The EX port is really good. Operating within the idle-5500 rpm range - they fit the bill perfectly. COMPLETE READY TO BOLT ON. 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. They must line up perfectly to each other. 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. FLAT TAPPET OR HYD. First of all, I'm just a homegamer in the Oldsmobile cylinder head department.
Cylinder Head and Manifold Porting Services Combustion Chamber, Exhaust and Intake Ports all fully CNC machined for better flow. Research, compare, and save listings, or contact sellers directly from 160 Oldsmobile models in Rahway, NJ. So remember: J is for junk. NO HEAD BOLT HOLES TO DEAL WITH WHEN PORTING. Our EFI systems provide excellent throttle response throughout the RPM range along with smooth engine operation. 0000000833 00000 n
While many gardeners prefer the reliable production and compact size of determinates, others are drawn to the larger fruits and greater yields of indeterminates. Stock-type steel big-block Oldsmobile valves are available through SBI and other sources and are relatively inexpensive. This creates additional horsepower and torque. If you have him do a full port job, you will not be disappointed. As well as port matching. 0.027" cometics, should be roughly 9.6-1. 0000000680 00000 n
0000363215 00000 n
There are a number of head gaskets for the Oldsmobile engine. WebAll Speedmaster 18deg. We'll assume you're ok with this, but you can opt-out if you wish. v*UWb]v*U??~Z }e{XWU=_PF*+m (.__Z
=j:S{O*>})Hu{Gl;bwyl8W8? JFIF H H Adobe d@ Stage II: $550 Our "street/strip" port job - for those on a budget. Complete w/ Brodix Severe Duty 2.375 2 Brodix Race Rite 365 -385RRX square port complete heads. But opting out of some of these cookies may have an effect on your browsing experience. When it comes to yellow tomatoes, Carolina Gold is a popular determinate variety. For instructions on how to enable cookies, please see the help section of your browser. Once JavaScript is enabled please refresh the current page. The perfect cylinder head, designed for entry-level that results in great driveability, power and economy. 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. 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. It'll pass anything except a gas station :-).
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. THIS PACKAGE INCLUDES: 1 PAIR OF ROCKET RACING CYLINDER HEADS. Standard full port goes about 250cc and flows over 340 cfm. 2023 Power Automedia. Some of the key features include: Speedmaster CNC ported cylinder heads are machined on dedicated 4-axis and 5-axis CNC machining centers to ensure accuracy and cost effectiveness. In those days, the shops clientele read like a Whos Who of drag racing greats. They are a clean sheet of paper design. Competition-ready heads feature fully CNC machined combustion chambers and blended seats for increased air flow and well as revised exhaust valve angles for larger intake valves. Heads Shop is located at 4101 Bergen Turnpike in North Bergen, New Jersey 07047. Whats The Reason Enthusiasts Cant Get, Full Factory Tour: How Edelbrock Makes Its Cast Aluminum, High-Performance Racing Fasteners: How ARP Fasteners Are, Dobbins Clocks First 3-Second Mountain Motor Pro Stock, BirdDoc: The Six-Speed GT500 Record Holder And Its High Flying, Video: Installation Time-Lapse Of The Fresh New 3M Wrap On, Drag Pak Racer AJ Berge To Fly Iconic RAMCHARGERS Colors In 2023, 2003 Cobra Runs 8-Second Pass With Whipple, IRS, And A T-56, Moser Performance Girdles Add Rearend Strength To Your Third-Member, New Season Of Street Outlaws: Fastest in America Debuts March 13, Retro Injection: Modern Fuel Injector Tech Gives Us Room To Grow, How We Fixed The Unsightly Wheel Gap And Stance On Our 2010 Camaro, Lizzy Musi Preparing For Street Outlaws: No Prep Kings Season 6. Our office will be closed December 31. Oldsmobile heads are available with OEM sparkplug location. They are available for popular V8 engines. Tomato Varieties: From Determinate to Indeterminate & Dark to Yellow Research Your Options Before Planting! Rule Number 2: Let the air move the way it wants to, not the way you think it should. Porting at Home by Michael Lufty, All Chevy Head Wizard Joe Mondello offers tricks of the trade. The famed Mondello-Matsubara Blown Fuel Altered won two National Events in the 1960s. 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. The Mondellos showed they could excel on the water as well as the dragstrip. Oldsmobile Top End Kits; Oldsmobile Aluminum heads; Oldsmobile Intake and fuel systems; Oldsmobile rotating systems; Camshafts and lifter sets; Oldsmobile roller rockers and pushrods; Pricing on the WPE Z head starts at $2,850 per pair for the Stage 1 design, with incremental prices increases as the user seeks to increase performance by choosing the Stage 2, 3 or 4 designs. WebSpecializing in Oldsmobile high performance 4509 Crichton Ln. Speedmaster cylinder heads offer great performance for less than it would cost to rebuild an old set. napier 948 243 1 Jan 22, 2020 #3 nice looking ride.
Feel free to contact us for any custom quotes. SPRINGS,LOCKS, RETAINERS, STUDS,GUIDEPLATES, AND VALVES. It is also known as Radiator Charlies Mortgage Lifter, after Charles Byles (1890-1976), an auto mechanic, This website uses cookies for functionality, analytics and advertising purposes as described in our, http://www.xsrpms.com/dragnet/rides/napier/index.html. as well as profiling of the combustion chambers. Cookies are disabled. // Ported.
Machine Shop Build your own custom newsletter with the content you love from Dragzine, directly to your inbox, absolutely FREE! Hopefully somewhat impressive or at least an improvement over the small valve heads I pulled off. We'll be back on Monday, January 3. WebCompetition Components 4406 Van Atta Rd. In the 1960s, Joe also worked part time for Carroll Shelby building the performance heads and engines that won the Le Mans Grand Prix. I had those sitting here, and took a look at the chamber design and the shape. Made from the finest material, with total in-house manufacturing in our ISO-9001 certified California-based facilities. This website uses cookies to improve your experience. The T&D shaft-rocker system was developed specifically for this cylinder head configuration. Intake and 1.680 in. 7Us.QW~?Y"6P-7Kv4z~hFseH.I>ZVb>U43T.
Bulldog s !1AQa"q2B#R3b$r%C4Scs5D'6Tdt& These heads are capable of over 400 cfm airflow. In the 60s & 70s, this was the fastest wedge-head Chevrolet, running a 7.24 E.T. Olds Oldsmobile 1969 BareC Heads / 455 / XLNT! 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. Speedmaster Bare cylinder heads offer improved power throughout the entire rpm range for greater throttle response and top-end performance. The most desirable small-block Olds cylinder heads are the number-6 and number-7 castings. 1 ROCKET Includes port matching and blending of the plenum and its dividers.
Wise Performance Engineering They did change quite a bit in the later smog engine years. Throttle response and power range from 1500 - 6500 RPM. I sent the head out to them and had them build their complete shaft-style rocker system on it. They feature double-pinned rotors (timed and clearanced after assembly), heavy duty front and rear bearing plates, and an intake manifold. My #6 heads probably flow close to the first numbers. Bernard Mondello, Joes son, grew up surrounded by the richest heritage in drag racing history. The oldest castings (used on the 1965 400 to 425-ci engines) have the letter A, and the latest big-block production castings have the letter J. The series ended there. You have a direct, line of sight to the valve on both the intake and exhaust side. Terms|Privacy, Oldsmobile Motor Cylinder Head Guide | CarTech. But what can we do to help? Joes worldwide clientele bears this axiom out; using Mondello heads & engines, they have set every type of record imaginable. Coming along slowly.. it's a long winter. A good option for ported heads. Mondello Performance Products, Inc. 1103 Paso Robles Street Paso Robles, California 93446, Toll Free Order Line: 877-322-4489 (Ordering with part numbers only). 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. Seen here are two angles of the intake port. The cylinder head works by allowing the air-fuel mixture to enter one valve and the exhaust gas to exit the other. Stage III: See below for pricing complements any head porting for maximum horsepower. The Sportsman Series offer high horsepower and excellent torque.
Wise Performance Engineering's Oldsmobile Stage I BP: $300 Our "street" port job - a minimum recommended porting stage. O-rings can be installed in the head or the block, but preferably in the cylinder head.
Oldsmobile 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.
Olds Oldsmobile Description ALONG WITH DUCTILE IRON SEATS THAT ARE COMPATIBLE WITH TITANIUM VALVES. 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. WebHeads Shop at 4101 Bergen Turnpike, North Bergen, NJ 07047. Factory trained on AEM and Holley EFI systems. From basic "Hot-Rod" mild cylinder head porting for that street and strip machine to all out class competition machines where every horsepower matters, you're in good hands with CFM Performance! As with any major engineering project, it wasnt so simple as just measuring the dimensions and transferring them over to a new casting. Back in the mid to late-00s, Wise was racing his Olds in the NMCAs Pro Stock class using a set of warmed over old-school Batten cylinder heads, and he eventually came to the realization that if he wanted his combination to progress, he was going to have to do something about the induction system, as the Batten heads were, for lack of a better term, tapped out. This tells you if both heads are milled the same amount and if those decks are straight. COMPLETE READY TO BOLT ON. Mated with the fuel injection, it starts right up, has a nice raspy idle and great throttle response., 572 HEMI in a 64 Dodge 440 - Best Machine Racing Engines built the engine - we chose the Edelbrock heads as they were impressive castings with great finish and flow right out of the box! Most Olds folks seem to prefer theC heads for their added performance and better flow. The oldest castings have a lower number and the latest production castings have a higher number.