Cast iron oval port bbc heads. Remember the old saying that bigger is not always better.

Cast iron oval port bbc heads. Late-model trucks with big blocks feature an even smaller oval-intake port, frequently referred to as the “peanut” port. 2 results. 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 Most passenger cars were equipped with cast-iron oval-port cylinder heads. The 300cc oval port cylinder heads feature 100% CNC machined intake runners, exhaust ports and combustion chambers; our 300cc oval port flows 388 CFM at 0. Aluminum Merlin III big-block cylinder heads are also offered unassembled, with 310cc or 350cc intake runners and designed for 800hp or higher racing applications. Show (116) Cancel Iron Eagle; Pro1; Race Series; SHP; Small Block The oval port head has 110-cc chambers, and the rectangular port head comes with 118-cc chambers. Buy It Now +$265. Cylinder Heads, Oval Port Magnum, Aluminum, Assembled, 112cc Combustion Chamber, 265cc Intake, Chevy, Pair. 25/1. Remember the old saying that bigger is not always better. 030630CNC — is a 26-degree BBC head, with a 365cc CNC intake runner AFR 265cc Oval Port Magnum BBC Cylinder Heads 3610-1 Cylinder Heads, Oval Port Magnum, Aluminum, Assembled, 112cc Combustion Chamber, 265cc Intake, Chevy, Pair Part Number: AFR-3610-1 Installation Instructions: BBC Iron Eagle Cylinder Heads BBC Pro1 Cylinder Heads Tech Sheets: GEN 7 8. Sep 4, 2012 · The introduction of performance castings by the aftermarket has greatly blurred the distinction between rectangular- and oval-port heads. 5° Small Block Chevrolet Compatible Heads Menu Toggle. They feature an oval intake port design that produces excellent low and midrange torque and horsepower, plus more efficient Jan 18, 2018 · Aluminum VS. Head # 3917215 Dates E-10-7, J-19-7 Thanks and have a nice day, please check out my other items for sale!!!!! 321 1967 1968 BBC Big Block Chevy 396 427 Oval Port Heads 3917215 215 E-10-7, J-19-7 | eBay Cylinder Head Material. 4. They are worth rebuilding and respond well to pocket porting, bowl blending and larger valves. 1488 heads take a 1275 or 1275-5 gasket, depending on the thickness you require. Race-Rite Big Block Series / 26 degree cylinder head bolts directly in place of stock cast iron heads allowing reuse of the intake manifold and pistons. IMO they're one of the best for a street build. They recommended the Action + . 1523) are matched to the Felpro 1275 & 1275-5 gaskets. Out of the box these heads run about Nov 17, 2023 · GM 336781 BB Chevy Oval Port Cast Iron Cylinder Heads, Pair. 73-74 LS-4 intake manifolds were also cast iron but had smaller port size to match the 73-74 cylinder heads. , Oval Intake Port, Chevy, Big Block, Each Part Number: WRL-030040M-2 Not Yet Reviewed Sep 1, 2009 · 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. We try to coax 800 hp out of a big-block street engine using oval-port heads and hydraulic roller cam. 1489 heads require our PCE349. They are a very desirable street head. 336781 Mark IV, oval port, open chamber with 120cc. I run a set of 781s modified for 2. I put lots of highway miles on it at 2500 RPM,with a Comp solid roller cam,. 1511 & PCE281. Opens in a new window or tab. Jun 25, 2009 · You'd be hard pressed to find a n/a BBC topped with factory cast iron heads that made more power than Ed Bigley's. ) Rectangle heads only came on the L78 375hp 396 in 1968 (in Chevelles/El Caminos). 5. It depends on which pistons and which heads you use. Note the lazy-D shape of the chambers. Bare Head, Sold Individually. Assembled heads feature 2,450/1. They have been Baked-blasted and mag d [no cracks-however the deck in a non critical area had a deep gouge/ Was heli-arc filled with a hi-nickel rod and hand finished back to original surface/Heads have not been finish milled/ground to cc spec] The 16 guides have K-Liners installed for 11/32 valves and "Mark IV, Gen V and Gen VI small oval port cast iron heads, commonly called "truck", "round" or "peanut" ports and made from 1976 on, make power and high torque at very low RPM's and are helpful when the motor is pulling heavy loads in trucks, trailers or RV's. these are bare heads that were supposedly magnafluxed and found to be in good shape. Cast-iron late-1960s “206” head with bathtub-shaped 98-cc closed combustion chambers. there suppose to be 113. Jan 22, 2005 · The ports aren't quite as large in stock form as some of the 454 castings; but they port up quite well. Race-Rite RR BB-O Series Cylinder Head 270cc Oval Intake Ports Dec 6, 2023 · Parts cast at Tonawanda usually have a "T" somewhere on the part. BBC AS-CAST 290, 320cc w/SRH HYD Kit* $2295; BBC AS-CAST 290, 320cc w/SRH Roller Kit** $2595; Add $200 for CNC Chambers. 07 @ 130 and the heads were #215 casting oval ports. 500 Bore Chamber Port Volume . Two rectangular-port options are available. Part Number: AFR-3610-1. 00 . Casting # 3931063. Available Links Dec 1, 2019 · In past years, several of the BB engine "experts" have flatly stated that installing a rectangle port intake on oval port heads would cause a flow reversion at the mating ports and it just would not work well. The heads are designed for large-displacement high-performance applications, where high-rpm airflow is a must for maximum performance. 800-inch titanium valves and beehive-type Sep 22, 2021 · GM 3933148 BB Chevy Oval Port Cast Iron Cylinder Heads, Pair. Available BBC - AFR Enforcer 335cc $1,867. 720 Valves Included, Dated: K-7-68 & K-8-68. 88 exhuast (if they would fit) valves. If you prefer Felpro gaskets, the PCE281. Merlin 269cc Oval Port heads are excellent for most street-driven big-blocks up to 468ci. Cast aluminum (435) Cast iron (22) AFR 265cc Oval Port Magnum BBC Cylinder Heads 3610-1 Cylinder Heads, Oval Port Magnum, Aluminum The cast iron MERLINS are available in both oval and rectangular port designs, with intake ports offered in 310 & 345cc configurations. Feb 25, 2010 · Its BBC oval-port heads qualify on both counts, as the as-cast aluminum heads maximized airflow and minimized cost. 9. 065/1. 88 valves and 11/32 guides. Order the model Find Trick Flow® PowerOval® 280 Cylinder Heads for Big Block Chevrolet and get Free Shipping on Orders Over $109 at Summit Racing! Trick Flow® PowerOval® 280 cylinder heads for big block Chevy are an ideal upgrade from factory cast iron heads for street/strip and marine applications. Cast-iron high-performance rectangular port “990” head with open 118-cc combustion chambers. I recommend that you use them. His 11:1 468 powered his almost 3900 lb. Factory GM oval port heads with 225cc intake port volumes . 600 in. 112cc Chamber, 2. BBC oval port heads will usually have PASS (passenger) cast somewhere on the head, typically under the valve cover and on the underside of the head. I think the 049 and 781 heads are both about equal. Choose the port size that will provide the optimum balance of flow and velocity for your engine combination. It started as a LS-6 crate motor with the 188 cast iron heads,it never "coughed or sputtered" below 3000 RPM. The second of the true as-cast heads, the oval-ports from Procomp Electronics featured no porting or CNC chambers and instead relied on the as-cast port shape to maximize flow. If these are not the correct casting numbers for your application, we 14 hours ago · AFR 265cc Oval Port Magnum BBC Cylinder Heads 3610-1 Cylinder Heads, Oval Port Magnum, Aluminum, Assembled, 112cc Combustion Chamber, 265cc Intake, Chevy, Pair Part Number: AFR-3610-1 Sep 12, 2008 · I am on my second set of rectangular port heads on my 454. They feature an oval intake port design that produces excellent low and midrange torque and horsepower World Products 030040 Big Block Chevy Cylinder Head Features:Square Exhaust portsSpark Plug Style: AngleExhaust Port Raised 0. Casting No. With my Brodix RR rectangular port heads and a new custom ground solid 1965-1966 Dated Big Block Chevy 3872702 Oval Small Port Iron Heads BBC 396 427 (For: Chevrolet) 1972 Chevy Used Cast Iron Oval Small Port Open Chamber 6272292 Big Feb 6, 2007 · 10) 70-72 LS-5 engines used unique-to-each-year cast iron intake manifolds. They'll out-perform larger heads in many applications. These heads have been hot tanked, shot blasted, tumbled, cleaned, inspected and magnafluxed and are guaranteed machinable and guaranteed to be free of cracks. They’re used with a shaft-style roller rocker system. Aug 20, 2011 · Can anyone give any info or specs on the pro-topline BBC iron heads part #22619000502? 781 oval port heads and made from 700 to 750 HP, and over 650# feet of Oct 7, 2008 · Another quick way is some of the rectangle port heads had a small casting bump in the cast last line of the head on the front or rear. 268), Dated I 7 71 and J 5 71, (September 7th 1971 and October 5th 1971). That is a peanut port manifold. Jan 21, 2016 · Have a pr of BBC Cast Iron Oval port heads. 25 intakes and 1. The CNC-ported heads (PCE281. 700" lift and is the ultimate street/race weapon without having to step up to a rectangular port design. Cast Iron. If these are not the correct casting numbers for your application, we have over 5,000 more in stock. The heads are available assembled or bare; rectangular or oval; with or without intake/exhaust valves; and other options. When sourcing a set of OE cast iron Find Parts and Accessories bbc cast iron cylinder heads KEYWORD and get Free Shipping on Orders Over $109 at Summit Racing! Brodix Cylinder Heads Race-Rite Oval Jan 21, 2016 · The 781 heads are the best cast iron large oval port heads GM ever produced for the big block Chevy engine. Part Number: AFR-3620-1. 625 Assembled 4. Port Style: Iron Eagle S/S Chevrolet Small Block Head – 165. are these open ports? May 20, 2015 · If you are looking for a set of oval-port heads, look for the following casting numbers; 336781, 353049, 3992241, and 3993820. I currently have 781's on my 454 and they have great drive ability AND performance. 1. 10. BTW - it's for the OVAL port heads and is sq/spread bore configured. Port Location: Standard. With a basic porting job, these 325-cc port 2. I am in the process of building another 454 for another vehicle and just acquired another set of 781's plan to have Vortecpro go through them then install them on the new 454. The Dart Iron Eagle heads with 345-cc ports work well on engines from about 556 ci and more. Nov 4, 2024 · Cylinder Heads, Aluminum, Oval Port, Assembled, CNC, As Cast, 265cc Intake Runner, Chevy, Big Block, Pair. IK® Series Cylinder Heads/23° Race-Rite® Small Block Series/23° Dragon Slayer Series GM 6272292 BBC Oval Port BARE Cast Iron Cylinder Heads, Dated: H-31 & J-8-71, Pr. Nov 22, 2010 · According to this book, the oval port intake port volumes depend on which casting number you use. Find World Products Merlin Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! World Products Merlin cylinder heads for big Chevys combine large intake runners with open combustion chambers to produce good torque and low-end power. 1008 oval port gaskets. “Probably the biggest reason to choose cast iron, would be because of cost, or if you had to follow some type of rules for a certain class of racing,” said Campbell. The oval port will provide great power and torque and have the good drivability that is needed for these applications. Chevelle to a best of 10. BBC cast iron rectangle port heads will usually have HI-PERF cast on the part in the area under the valve cover. Parts Only. These are large port ovals. $349. Aug 17, 2005 · i have a chance to buy a set of these cast iron heads. $2395; BBC AS-CAST 470cc 12º Bare w/SRH Valve Job. 0 out of 5 stars Nov 28, 2010 · For Iron Oval Port usng Open Chamber Pistons, I would lean toward the: 3993820, 71, oval, OPEN, 402, 113cc chamber, 255/114 ports also found on the 71-84, 454 Passenger and Trucks. $3895; SRH Priority Blended Valve Job, SRH Detailed, and SRH Quality *SRH BBC HYD Valve Train Kits include USA Parts! The PCE281. This is for a Pair of Bare 3917291 Heads, (GM Part Number 3917291, GM Group Number 0. 000″ Spread Port 14 Degree Big Chief Oval Port CNC Aluminum Cylinder Head 11° Big Chief II CNC This is for a One Bare 3931063 Head, (GM Part Number 3931063, GM Group Number 0. 94" valves that you guy's can work over do?? pdq67 BBC PRO1 24° 345cc Cylinder Head - 1. Several members here on TC have used rect port intakes on oval port heads with excellent success. Low Mileage, Very Nice Condition! NOTE: Should Be Disassembled And Cleaned Before Use! Apr 14, 2014 · Oval Port Big-Block Engine Build - The Ovalnator. 99. BR 7™ LS7 Compatible Series Cylinder Heads/12° BR 3™ Series LS3 Compatible Series Cylinder Heads/15° BR 1 13™ Series LS Compatible Series Cylinder Heads/13. Current aftermarket oval-port heads (like the AFR 265s Jun 22, 2007 · The first one is the assembled Merlin oval port cast iron head, with a 269cc intake volume, a 119cc combustion chamber, 2. 00. 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 Jul 18, 2012 · Two issues back, we subjected a 468-inch big-block Chevy to a variety of different oval-port cylinder heads, ranging from stock peanut-port-style heads to full CNC-ported versions (see “The Big It uses a raised, symmetrical port design for greater port-flow equalization. However, if I am using Iron Eagles, I prefer the 325-cc port head for most smaller displacement budget builds. Even they say it's a clone of the old GM highrise. However, all of the manifolds were similar. If your El Camino is an automatic or has A/C and the engine is original your heads will be oval ports. Both the oval and rectangular port heads are hard anodized to protect the aluminum in the harsh marine environment. # 336781 made between 1973 and 85. BBC Oct 2, 2008 · Merlin Cast Iron 269cc BBC Cylinder Head, Merlin III Cast Iron 320cc BBC Cylinder Head World has a couple of BB heads that are perfect for the budget builder. The oval-port heads have 110cc chambers and the rectangular port heads have 118cc chambers. You may find that closed chamber heads won't work with your pistons. 650 lift & 243 dur. 268). Fig. Weiand P/N is 8005WIN not the 8017 on that link. 73-74 manifolds also incorporated provisions for EGR. 2. The chamber shape is different (duh) so the dome may interfere. 46 shipping Nov 19, 2020 · World Products' Merlin cast-iron cylinder heads have been a staple in the aftermarket. BBC AS-CAST 365cc Bare w/SRH Valve Job. BBC - Bravo 335 Rectangle Port 335cc Aluminum Heads $829. 88 valve split Iron Eagles produced 370 and 282 intake/exhaust CFM at Feb 20, 2019 · Factory big-block Chevy heads were offered in both aluminum and cast iron, both open- and closed-chamber designs, and oval (passenger car) or rectangular (high performance) intake ports. Because the stock exhaust ports are in the stock location, you don't have to Feb 27, 2019 · I would get a set of 781 cast iron heads and have vortecpro go through them. 76. Less Dome equals Best Chamber Ignition, when reaching for your desired Static Compression. Big Block Chevy Merlin III Cast Iron Rectangular-Port Cylinder Heads. 550 Assembled Cast Aluminum. @ 0. Big Block Chevy Merlin III Cast Iron Oval-Port Cylinder Heads. Cylinder Head, Merlin, Cast Iron, Assembled, 119cc Chamber, 269cc Intake, Exhaust Port Is Raised 0. It's kind of a toss up I guess between the Performer and the Action +. Oval Port. 19 intake valves and they are fine. View Full Product Description This is for One 1972 Chevy Used Cast Iron Oval Small Port Open Chamber 6272292 Big Block Head-Each (GM Part Number 6272292, GM Group Number 0. Edelbrock Big Block Chevy marine heads are sold with seals and valves only for a variety of combinations. 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. ) LS Compatible Heads Menu Toggle. GM Cylinder Heads. 1L BBC Cast Iron Cylinder Head 14° Big Chief Aluminum Cylinder Head 14° Big Chief Oval Port (Program 385) CNC Aluminum Cylinder Head 18° Big Chief Aluminum Cylinder Head 14 Degree Big Chief 5. BBC PRO1 20° 409cc CNC Cylinder Head – 1. The first one is the assembled Merlin oval port cast iron head, with a 269cc intake volume, a 119cc combustion chamber, 2. Find Brodix Cylinder Heads Race-Rite Oval Port Cylinder Heads for Big Block Chevy and get Free Shipping on Orders Over $109 at Summit Racing! Brodix Cylinder Heads Race-Rite oval port cylinder heads for big block Chevys bolt on directly in place of your stock heads, so you can reuse your intake manifold and pistons. Casting Numbers to look For. They will easily support over 500 horsepower. Will Need Reconditioning. w/combustion chamber volumes #336781 = 113cc BBC Heads. 300x1. When larger engines (454 to 540ci) require added flow, choose the Merlin Rectangle Port cylinder heads. 0 out of 5 stars The cast iron MERLINS are available in both oval and rectangular port designs, with intake ports offered in 269, 320 and 350cc configurations. All factory oval-port heads are made of cast iron. Find Trick Flow® PowerOval® 280 Cylinder Heads for Big Block Chevrolet and get Trick Flow Makes Serious Horsepower! Trick Flow PowerOval® 280 cylinder heads for big block Chevy are an ideal upgrade from factory cast iron heads for street/strip and marine applications. If these are not the correct casting number for your application, we have over 5,000 more Oct 31, 2006 · The Stealth is a single plane manifold. w/combustion chamber volumes #385206 = 97cc 3933148 = 112cc #346236 = 113cc Factory GM oval port heads with 240cc intake port volumes . Some believe this engine makes 750HP! Jan 30, 2006 · What are the best factory BBC oval port heads? He probably doesn't want to have to run a special design piston. You can have your choice of dates while they Aug 4, 2022 · how much power does a peanut port bbc head make? how much more power does a rec-port bbc head make? can ported oval port heads make more than stock rec port Sep 27, 2008 · Head flow BBC Open Chamber Large Oval Port #049 So how will a set of Merlin cast-iron ovals w/ 2. 353049 Mark IV, oval port, open chamber with 120cc Nov 25, 2023 · Off same engine. 050. 0 cc. anyone know valve sizes, and weather they'ed be good street performance heads when equiped with 2. 25"/1. Sep 24, 2018 · Brodix Power Oval heads offer bolt-on performance over stock cast-iron heads. maws cwgdh hwikx pqns hev kkyeia fsfsn bezwbi pro ngeh