540 bbc with oval port heads. the single plane intake pictured below has on numerous tests provided exceptional power curves on big block chevy engines with the better 260cc-315cc port aftermarket oval port heads, when proper cams and port matching and higher compression ratios were used. Also Get the best deals for Bbc Heads at eBay. Unique oval intake port shape produces flow similar to rectangular ports, but the smaller port size provides excellent seat-of-the-pants performance and crisp throttle response. These are what we now use on our 505 and 555 bbc engines. They are large oval port truck heads, the same as the early B/B heads, but with 116cc. Have any of you used raised ports in a mid 60's A body and what headers fit? 396 427 454 496 502 BBC 115cc Aluminum Heads oval port chevrolet 540 572 new Brand New $1,169. 8 $150 (2) 1972 BBC 3999241 oval port heads. 050" Int/Exh 229/241 BBC 427 TRW 12. 700". A guy in town added a big cam to a 366 truck engine, W/ peanut port heads. 300x1. !! All mounting brackets, two bell intentional and mounting brackets,35 and 33 pulleys, full mandrel bolts and go I 1968 BBC Big Block Chevy 396 427 Oval Port Head 3917215 215 One single head cleaned and checked for cracks. 00 One used pair of Brodix oval port Race Rite heads. NEW - valve guides, Ferrea 6000 valves, Comp Cams 953 springs (155 lbs. 88 Ferrea 6000 valves and Comp 953 springs Straub hydraulic roller GTA cam and roller rockers: Adv. No matter how large or small your racing operation is, we are glad to be a part most 454 engines came with a rather low compression ratio and oval port heads, ,theres a wide variation in the engine potential in stock form, a 454 with peanut port heads and 8:1 compression , and a cast crank with 3/8" rods is at a disadvantage compared to the performance bbc engine versions, with 11:1 compression ratio big block that came 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 Forget the AFR 300's. But it might also be a power upgrade for you guys with other oval port heads and engines smaller than 540cid. They have a light porting job to smooth up Big block heads casting #346236 oval port 202/172 valve size, a little research shows they are good for 500 hp with work, best power on 396/402, solid low end torque and HP on a 454 truck or RV Here are my build specs for my 540 BBC : Shafiroff 540 real street short block with a Dart block and Scat forged rotating assembly 10. 4 SALE: 1969 BBC Oval port Iron Heads, they are a matched set 3931063 A-28-9, B-8-9. 5200 rpm converter,warmed over oval port heads,trans break. 50" duration, and . While combustion chamber size and configuration is important, most enthusiasts tend to focus on intake port configuration. AFR'S 335cc BBC Enforcer Cylinder heads feature our Permanent Mold "As-Cast" Technology surfaces on the intake runners, exhaust runners and combustion chambers that allows for extremely accurate and repeatable port location/performance. 700" lift. com. hi, I'm wondering what are the most desirable and best oval port castings to look for on a BBC. seat, 430 lbs. By the looks of the runners, it likely flows more air than the typical Performer RPM manifold. 88-inch valves and 118cc combustion chambers. AFR 4910 Big Block Dual Plane Brodix Oval-Port Heads With early-'70s oval-port heads performing so well, we couldn't wait to see what the benefits of 30 years of cylinder head technological evolution could bring to the table. If you are looking for a race grade head that is comparable to Edelbrock, Dart, Trick Flow, Pro Comp, or AFR at a fraction of the price look no farther then these. Please note that the exhaust flow #'s for the Brodix heads are without a pipe attached as that is how Brodix does it because they feel it is more accurate. For a 540 I'd look at the Pro Maxx 317 for a budget head with a 2. 522/. SB: Generally, with traditional-style oval-and rectangular-port heads, the smallest port with the highest flow volume is best. Check out the details and corrected power here in this install! I thought I got a bargain on a pair of like new Edelbrock oval port Performer heads, with Comp roller rockers, and Comp pushrods, for $950, but that already put me over your $1,000. 25/1. 1. 7 comp. Casting date H. Looking at 353049's and 336781's. 850 cfm holley. 5 to 1 Brodix RaceRite 312cc Rectangle port heads with 2. 507" lift, 107 LSA. It comes with a 2. 5º, 12º, and 9° versions. These heads come with 2. 45 TBS 250 BBC tall decks blower Only 6 passes from brand new,in like new condition. **1968 BBC Big Block Chevy 396 427 Oval Port Head 3917215 215 J-19-7 427 390hp** **Good head with no cracks or damage. chambers, or larger. Cylinder heads oval port 3917215 castings. Peanut ports are ULTRA small port B/B heads , with torque designed into their casting. These are large oval port cylinder heads with open style 115cc combustion chambers and 300cc intake runners. 97cc. We test rectangle versus oval ports on a Chevy big-block and give you the dyno numbers. and it run 11. 1966 BBC3886948 factory Holley oval port intake. Int/Exh 288/300 Dur. 4L/454 Cylinder Heads and get Free Shipping on Orders Over $109 at Summit Racing! For oval port heads, the 66-67 factory cast iron intakes for both Q-Jet and Holley are also nice intakes, not at all like the later pancake factory intakes. This budget friendly head is perfect for your 509 to 540 The 781 heads are the best cast iron large oval port heads GM ever produced for the big block Chevy engine. The rectangle port has an intake port of 320 or so cc while the oval is around 270 cc. Supplying the air is an Edelbrock Performer RPM Air-Gap intake manifold fed by a Holley 950 Ultra HP 4150-series carburetor. I would thing you should be 670+ all said and done. 454-R on my 781 HP, 710 ft lb, 540 ci BBC Street/Strip motor and I like it just fine. I am helping someone out with a 454 and it has the stock 290 heads on it (3964290). 50's. enderle 990 pump buzzard catcher running 6-56nozzles in the hat 4-40 in the rear of the blower, port nozzles are 1-42,2-46,3-8 are all 40 running 30' timing i got a Presto Change O: BBC Oval-Port Magic If you are a Chevy guy and heading out to the performance super market for parts to build your 900-hp big-block, what stuff might we find in your cart? We try to coax 800 hp out of a big-block street engine using oval-port heads and hydraulic roller cam. I install a GM holley cast iron low rise oval port when I put a 750 VS holley on it. 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. 1. Designed for 1965-2000 models like the 396, 427, 454, 502, and 540, this head boosts power and airflow. 5:1 L2239N Pistons, Steel Crank, Steel Rods 3/8 bolts, Floating wrist pins, 4-Bolt Main 3963512 Block, Rectangular Port Closed Chamber Heads 3919840 , Crower Roller Cam 330RF, Roller Lifters, not sure on lift, duration etc, Crane Roller Rockers, Moroso Stud Girdle, Double Roller Timing Set. What We Like: It’s made from high-grade Nov 29, 2010 · Re: 540 BBC Pump Gas Engine - Cylinder Head Suggestions by 900HP » Mon Nov 29, 2010 1:15 am Just looking at advertised numbers the AFR 335 cc cnc ported heads flow 385/310 cfm @ . Yes, that's right, oval port heads. They have HARDENED exhaust seats to accommodate running unleaded fuel. In unported form these heads will support 500+ horsepower on pump gas. 12. 65 AFR 23° SBC Cylinder Head 210cc Race Ready Heads, Spread Port Exhaust, 65cc Chambers $ 2,592. Out of the box these heads run about $720. Jun 14, 2021 · My street "oval port" 540 made 638 hp 662 tq with smaller heads, a smaller carb and a factory winter's dual plane that's low enough to clear a stock hood. Super Victor 632 BBC Tall-Deck, for rectangular port heads, use with large cubic inch big-blocks (3500-8500 rpm) Personally, I'm running a VICTOR JR. 050 duration 540 I ran a 468 bbc with a cast crank and these pistons with arp hardware in a 3500lb chevelle for yrs. 23. 065 int. New valve springs,retainers + PC seals. HB: Yes, proper flow numbers are more important than size. Oval port heads were aimed at base engine packages while the rectangle port heads were reserved for the performance engines. 700" lift and is the ultimate street/race weapon without having to BRODIX is the undisputed leader in big block Chevrolet compatible technology. The motor is still together ready to run as a back up. 600" lift and 424/290 cfm @ . Guides are factory and Find 1995 CHEVROLET 7. Casting date C. The valve seats are rusty and may ne Edelbrock Performer RPM High Compression Oval Port Cylinder Heads These oval port heads are similar to the ones above with 100cc semi-open combustion chambers created by angle milling at a 1. Up top, we went with a set of deceptively capable oval-port AFR cylinder heads. That GM holley low rise I believe was a 65 Vette intake? I don't think the Brodix was really anything earth shattering or new technology other than it is designed for square ports. 5:1 compression when used as part of the Edelbrock Total Power Package. What the best BBC oval port heads, as far as port size and flow? Please help trying to make a decision on heads. New Manley street flow valves. I am wondering how many cc are they? Also how are these heads on a mild (10 to 1) say 235 @ . It features advanced port design and quality materials for better engine performance. Dur. The Bravo 335 bbc rectangular port heads are perfect for 454, 496, 540 and 572 street/strip engines. 30 intake valve upgrade. Thanks Tee Cylinder Head Specialists Recommended for agressive street, street/strip or race big block chevys with displacements up to 540 cubic inches operating at or below 6800 RPM. The Gen VI big blocks were fitted with oval port heads, and are slightly larger than the “peanut ports” seen on the Gen V big block. 99 $1,299. Big Block Chevrolet Compatible Heads From innovative design to precision manufacturing… BRODIX is serious about quality and workmanship at every step of the process. I'm afraid that I am losing control here, as I just purchased a new 502 GM Block (p/n 10237292)-now I am looking at a 540, and I have already purchased a set of Edelbrock Oval port Heads for the 496 (p/n 6045-290 cc)-they will fit the 502 Block. open @. Sep 16, 2023 · These oval port heads will support over 540 hp with 9. I finished my 540 BBC late last year and used Doug's D331-B which are 2 1/8" primaries in my 1972 Chevelle, made 840hp using Edelbrock 26 Degree Oval Port Heads which have received a generous amount of porting, these pipes have one primary on each side go around the chassis which requires the inner guards to be cut, which I think most off the Chevy offered two variations – oval and rectangle. SBC & BBC AFR SBC Enforcer Top End Kit, 195cc Assembled ANGL Plug Cylinder Heads, Dual Plane Int. Complete top end for your 396 BBC. im new to the blown alky and this thing is kicking my but here is what im running 540 bbc with brodix bb2 heads 11. We built our 540 Rat with Edelbrock E-CNC 325cc factory-ported cylinder heads. 8 $150 (1) 1968 BBC 3931063 oval port head. Manifold, Valve Covers, Gaskets, Head & Intake bolts, Spark Plugs $ 2,512. They have about 5000 miles on them since a complete professional overhaul. This head is built to last and can handle extra milling for custom tuning. We’re estimating approximately 650 hp in a 496 build with the same mid size cam. Here, Chevrolet offered two variations –oval and the rectangle. The heads feature a modest port volume of just 265 cc, but these fully CNC-ported castings have the airflow to support healthy output. I want to use aluminum oval port heads, a place up the road has pro comp castings that they assemble themselves, however the heads have raised exhaust ports, doesn't say how much though. 396 427 454 LS6 BBC Big Block Chevy rectangle port heads 3994026 NOS ish $5,000. No porting or polishing. I have a few big block & small block Chevy parts for sale. Please HelpTrying to make a decision on heads. 5 $175 (1) 1968 BBC3917215 oval port head. These are essentially “roval” or rectangular oval port heads that fill in the port entry corners that do not contribute to airflow anyway. This looks to be intended for AFR brand oval port heads. Springs closed 150, 365 Big Blocks BBC 565 Scott Shafiroff 60 Passes since new Carb to Pan Merlin Block Brodix BB3 Xtra Heads Have Dyno and Build Sheet. Casting date K. They produced 735 hp with our Comp 575 lift hyd. at . $13,900 BBC 540 No expense spared all the good parts are in this motor. 5:1 402, but if I could find a good set of open or semi-closed chambered heads, I could probably angle mill them to a desired CC. Only at carcraft. Feb 26, 2020 · Then we bolted on a set of Edelbrock 325cc, CNC-machined oval port heads. None of the low cost bbc heads on the market Aug 27, 2025 · These are large oval port cylinder heads with open style 115cc combustion chambers and 300cc intake runners. Conventional style cylinder heads are available in 26º, 24º, and 20º valve angles, and spread port heads are available in 18º, 16º, 14. On our 540 package they helped made gobs of torque. Port Shape and Volume This section quantifies a few major aspects of big-block heads, so you have better command of cylinder head decision making and can determine the best modifications to make. 600" lift and 404/321 cfm @. 600 Lift), Comp Cams Guide They are different though. I added a flat tappet Comp cam with 243/257 @. 88 valves and 11/32 guides. 99 Buy It Now My 70SS 396/350 hp had a quadrajet low rise cast iron oval port manifold. 30 intake valve, you can get a 115 or 119cc chamber, killer flow numbers and will work with a typical oval port intake, unlike the AFR. We have a great online selection at the lowest prices with Fast & Free shipping on many items! Tags bbc gap oval port heads pertronix plugs Jump to Latest 37K views 13 replies 7 participants last post by clintford Mar 23, 2018 57vette Discussion starter 2,573 posts · Joined 2015 #1 ·Apr 22, 2017 The oval port Brodix head has a 332 cc intake port and flows 396/284 cfm @ . I have read in several places I see it is a 101 cc head or 109 cc head combustion chamber size. A number of prime elements concerning heads need to be dealt with. We manufacture and sell more aftermarket aluminum cylinder heads than anyone else in the business. They are worth rebuilding and respond well to pocket porting, bowl blending and larger valves. These heads just came off of my running 540. Anyway, gonna be the typical aluminum head 10-1 compression deal. roller cam and single plane intake manifold on pump gas. 725 ex 2. Using a pair of Edelbrock 325c Heads and a 540-inch Iron Block, HOT ROD made good streetable power. If you're OK with an oval I'd look at the Brodix 24* BP RR BB-3 XTRA O. com or the November 2011 issue of Car Craft Magazine. The oval port Brodix head has a 332 cc intake port and flows 396/284 cfm @ . . 5 degree angle to improve intake port alignment and create a smaller chamber without valve shrouding. BRODIX offers a variety of big block intake manifolds designed for Chevrolet compatible cylinder heads, ensuring maximum performance and compatibility. I prefer closed chambered to get my compression up on my stock 8. The first one is the assembled Merlin oval port cast iron head, with a 269cc intake volume, a 119cc combustion chamber, 2. Adding AFR 265 oval port heads can add at least 80 horsepower. Oct 27, 2025 · Upgrade your Big Block Chevy engine with this high-performance aluminum cylinder head. I've since put a nice 540 in the car. The exhaust ports are about the same and are not very good and need a lot of work or you just buy aftermarket where they get it right in the first place. sueku, ls24w, rsab, sqza, r1grf, y4b1l, f421, e1rdw, vapmm, t42v,