Currently working on a 1970 Mach 1 project. reading. Other Intakes >> Application. The heads are Cleveland heads. The Edelbrock heads showed a little weakness in the midrange, something that could probably be rectified by adding a 30-degree back-cut to the intake valve. A forum community dedicated to hot rod owners and enthusiasts. Think of Ford as a free-spirited car company with a rich history, driven by ego, that took big risks much as it is doing today with electric vehicles. Experimental Boss 302 style heads . Alum. A tad shorter then a 351W but a little wider due to the size of the heads. Better compression then stock, better breathing then stock. 500 max! 154-3607: SB Ford 289-302 standard 12pt Head Bolt Kit. All Edelbrock E-Street cylinder heads are assembled with manganese bronze valve guides, powder metal interlocking valve seats, and stainless steel one-piece valves with hardened valve tips. The 302 Tunnel Port already had a terrific four-bolt main block and steel crank along with beefed up C3AE 289 rods and special pistons designed for the Tunnel Port heads. Ford took on the world with the GT40 supercar. Because the BOSS 302s heads sported monster-sized intake ports, these engines had a high-revving demeanor with peak torque and horsepower coming in around 7,000 rpm instead of the Tunnel Ports outrageous nine grand. Did you get them at a Chevy garage sale? Generator stud kit for 1938-48, use #8506. First of all. . 58 cc Chamber. These heads are screaming on the 302 I just built and are great quality. Inline and < 15* valve angle such as World Products Man O' War 10* heads promote very good performance. Actually, everything about these heads helps the little 302. 8l F250hd efi roller engine? While the DZ 302 had a stronger midrange than the Boss 302, in stock form, the Boss reigns supreme in the higher RPM range. Aluminum. Enter Fords development of an all-new 351ci engine with poly-angle valve heads and tight-fisted wedge heads destined for a 1970 introduction. You'll notice that we attenuated the horsepower graph to include just the power curve between 4,000 and 6,200 rpm. legend . The Good and Bad of the head bolts on the SBF is that their are only 8 of them. for use w/ Special Intake. Is it the 69 or 70 Boss 302 head that's more streetable? . The BOSS head was functionally identical to the 351C 4V head. Ive had several other brands, but HP has been the best. The DZ 302 has a reputation for being a high-RPM screamer, and the camshaft is definitely part of that. Needless to say they began to really spank everybody and by the end of the season the six cylinders were out ruled. D. Hearne is on the money as usual. JavaScript is disabled. See the top reviewed local exterior and siding contractors in Hohenthann, Bavaria, Germany on Houzz. I assumed thats how they went and I also used the end seals. Edelbrock E-Street cylinder heads are just the ticket. This educational content is not intended to be a substitute for professional advice. Exhausts have only a. After its time on the pump, the DZ 302 posted 357 horsepower at 6,700 rpm and 333 lb-ft of torque at 4,300 rpm. I am running them on a 302 and purchased this set for a 351 build. Like with standard 4V heads, you would have to machine the tops of the heads to accept screw-in, adjustable rocker studs. 0:1 on blocks with a 3/16 base relief (stock bore and stroke). This one appeared great at first use and for a couple of months. Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4in. The 170/200/25 are the same block design, with the 250 having a taller deck height (so you can't easily make a 250 from a 200). Rugged, ribbed internally and externally, with a large water capacity and excellent breathing characteristics. However, way down low, where the big-port Boss 302 motor isnt supposed to work, it made decent low-speed torque. This combo has been dynod at 460-ish hp at 5000 rpm and 550 ft lbs of torque at 2000 rpm. Its main function is to seal the combustion chamber and provide a surface for the intake and exhaust valves. Its not a good time to be building a performance engine. Great article is there a video available ? In my 70 years of fooling with cars, we always had a formula. Aluminum Block Aluminum Heads - Subtract .012? Not the 2012-13 Coyote DOHC BOSS, but instead the genuine pushrod original from an era when Ford did the unthinkable repeatedlyand won! RHS shipped the heads with what should have been a sufficient single 1.460-inch-diameter valvespring, but the horsepower graph reveals that above 5,800 rpm the power trailed off, leading us to think that perhaps with a better spring this head could have carried the power out beyond 6,000 rpm, which would have improved its peak horsepower number. Street 512 Mopar motor in a Dodge Dart . It came with aluminum heads that were way too big for the cam and my use. The rocker studs are 7/16, not 3/8. Bill Mitchell Products BMP 087510 - Aluminum Engine Block Ford Small Block 302 Mains, 8.200 Deck, 3.995 Bore, Billet Caps. Boss 302 is a Windsor engine; uses Windsor cam lobe profile & 1.6 Windsor rockers. They dropped off after that. The Mustang 5.0L Coyote engine has evolved into the Boss 302, VooDoo 5.2L, and the Predator 5.2L. These heads use the same valves, valve springs, retainers, and 7/16 in. Marvin Shaw built us some nice HP heads for our later 1989 Super Stock Mustang driven by Charlie Ford who set 1/8th mile record under 6 seconds in 89/90 . Be the first to rate this post. Swirl Remarks CHW's Modified Boss 302 head shows the elimination of a swirl effect at lifts below .600 inches. There are still 6 other steam holes not present in the 5073 head that are in the 350 block circa 1972. The completed head is also wider so push-rod holes need to be cut-out on the block side, then sealed with "o" rings, etc. 1969 - C9ZE-6090-A or C The Edelbrock 351C head shows a controlled "swirl ramp" that comes on lightly at 100 RPMs starting at .450" lift and increases steadily to 2000 RPMs at .600" lift. The BOSS 302 heads used some of the biggest valves in the industry. $1,692.99. Much of this gain over the stock 345-hp Boss 302 rating can be attributed to Westech's lower 140-degree engine coolant test procedure and open dyno headers. Purchased a long block on CL. So, a big head, lots of camshaft, an aluminum intake, and a Holley four-barrel. The Edelbrock #5073 E-Street cylinder heads are designed for use with 1955-1986 Small-Block Chevy applications. Aluminum will allow you 1pt up in compression for its ability to shed heat. Primarily, the 5.0L V8 in the F-150 received a lower compression ratio (10.5:1), intake camshafts with less duration, cast iron exhaust manifolds, and revised cylinder . The F code 302-2V was made from 68-73. (Image/Jim Smart) Although these are 1969-70 BOSS 302 heads, they []. A recent test of a prototype set of Hammerhead's castings bolted on a 427ci small-block stroker produced over 600 hp with a streetable hydraulic roller camshaft and 600 lb-ft of torque. The Twisted Wedge heads also had the strongest horsepower curve above 4,000 rpm of all the heads tested. Not all that long ago, the small-block fan's only choice for Ford cylinder heads was the classic 351W Ford heads swap on a 302. The Duntov cam that GM used in the DZ 302 had over 250 degrees of duration at .050 [inch]! Holdener explains. Help keep from being nose heavy. Otherwise, pair these with some flat top pistons with the correct valve reliefs. What I got was good, but the quality control person should not have let these go out the way they are. You may also cruise the online auctions for a vintage 5.0L roller block (F1AZ-6010-B). [IMG]http://home.pacbell.net/kketell/USAFlag2.gif[/IMG][IMG]http://a8.cpimg.com/image/56/2C/8548438-4e05-00C8003F-.jpg[/IMG]. The 240 and 300 are basically the same engine -- based on the same block design anyway. These features improve an engines efficiency, resulting in more horsepower and torque and improved mileage potential. Cover Autolite 4V casting D0ZX9B48-3 . These features improve an engines efficiency, resulting in more horsepower and torque and improved mileage potential. We should also mention that although we didn't test a stock iron casting, it should be clear that even the heads on the lower end of our test would still be an improvement over stock factory castings. Im trying to leave this pretty much as is, until I get a few good drives in. It was what the SCCA mandated for street homologation. The 300 and the 240 are identical blocks,the heads are different and the 240 is basically a destroked 300 so it will rev a little higher. When I set the carb I get a bouncing vacum needle at idle, Ive been told thats a sign of a sticking valve. The biggest difference between the two engines is the cylinder heads.. That may or may not make your ultimate choice any easier, but if so, you can thank us later. you could also get a 302 crank and rods with custom pistons, a 302 crank with 289 length con rods and off the shelf b2 pistons. My build is a 306, 9. Talk to Coast High Performance in Torrance, CA who sells quite a few 347 Street Fighter kits/short/long blocks and they will have some stats to back up quite a different story. These ford flathead cylinder heads feature original edelbrock script logo design for fords and mercurys. Heads are sold individually. FORD and Mustang Cylinder Heads (6090) 5752143: 59 332 352 . I would suggest pulling the vavles and wiping everything down. By doing the heads himself (he'd never tried it before), and using a 289HP air cleaner, 600 cfm carb, Edelbrock Performer RPM intake, stock distributor tuned to BOSS 302 specs, and a C9OZ-6250-C hydraulic cam, turned 323.5 hp @5300 rpm. They feature high-flow ports and steel alloy intake and exhaust valve seats installed (they do require a competition valve job and bowl blending). Revised cooling system passageways Siamese bore with drilled coolant crossover holes (Except on M-6010-B302BB ) Increased bulkhead material I have not been able to specifically identify because the stamp on corner does not mach up with what it should be. There are many different types of cylinder heads for Ford 302 engines, so it is difficult to make a definitive conclusion about them. 2/22 . saving. Weve got 302 fords with gt40 3 bar heads making over 500 hp. BluePrint Engines stand in front of the class, offering both performance and cost-conscious enthusiasts a powerful alternativeMuscle Series cylinder heads. The Ford, however, made a peak horsepower number of 374 horsepower at the same 6,700 rpm as the Chevrolet, and again, had the same peak-torque RPM as the Chevy, but made slightly less peak torque, at 324 lb-ft. They feature revised valve angles and locations to reduce cylinder wall shrouding and improve flow, along with redesigned combustion chambers to accommodate the more centrally located valves. Renegade Street. The compression ratio is 8. But it should be noted that Ak Miller built a '67 Mustang at about the same year and created a 300 out of a 240 ( for the younger ones a 300 used to be a truck engine and the smaller 240 was used in the cars,LOL) with a set of Webers and bigger valves and cam, it turned in the twelves, that's in the late 60s. However, its always fun to think about building one or even erecting one from scratch, which you can do with a Ford Performance BOSS block (M-6010-BOSS302) and Cleveland heads. While the tunnel port wasnt a complete success, thats how the Boss heads came to be. Back in the day, there was all kinds of speculation that they made more than 400 horsepower. Cleveland's Crown Jewel. I was wondering how these heads would work on my 97 5. As the 1968 Tunnel Port engine turned into a disaster, someone at Ford Engine Engineering got the idea to put a set of Cleveland heads on a Tunnel Port block and thus was the beginning of what would become the BOSS 302 engine. If you had the right pistons, you could use 351C 2V heads which are cheap and plentiful and don't have the low end port velocity issues 22GT described. Luckily I had the tools to put them back on but this could have been a issue and made them not bolt on heads. Prices listed are from the story's original publish date, February 1, 2013. Build your own custom newsletter with the content you love from EngineLabs, directly to your inbox, absolutely FREE! Very nice , Made in USA quality and same price as off shore heads. Click to expand. 1.90/1.60 in Valves. loading. The Ford head uses a net-lash design that makes the valvetrain non-adjustable. The Boss 302 and 351C-4V head casting are the same except for a minor difference in water passages. These heads feature A356 aluminum castings that are heat-treated to T-6 specs for superior casting strength and quality. 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The 302 has a 9:1 compression ratio, while the 347 and 363 have 9.6:1 and 10.2:1, respectively. Cylinder Head 190cc Assembled. The .10 difference in bore spacing( but the bolt pattern is the same square four as the smallblock) makes me think 3. The advantage was better flow because the intake was on one side and the exhaust was on the other. The result was a powerful 290-horse factory screamer with peak street power coming in around 6,000 rpm. It was honestly a guess on my part and the Tech had no additional information or opinion to offer. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. Basically, the DZ 302 shared all the specs with the previous 365-horsepower 327, with the fuelie heads, the Duntov cam, an aluminum intake, and Holley carb. 185 cc Intake. 015 AND THE REST WERE. the second head had not been full deburred from the milling process. Edlebrock is one of the few companies making great performance parts for small block Fords. . Im looking for three Ford Cleveland 4V engines. Not to mention the 50lbs you lose off the front. I have tried most all of it and now do what is known to work.. Well, this may be old info, since the warning tells me that the last post for this discussion occurred >100 days ago. I KNOW FROM EXPERIENCE. installed the heads on a 1978 460 bored out .060 over went from 500 hp to 551 hp @4900 rpm on a dyno 8/9/19. The Fora platform includes forum software by XenForo. A forum community dedicated to vintage Ford Mustang owners and enthusiasts. Even the stock cam should peek higher than 5500 rpm. Intake - 2.19 inches "Basically, the DZ 302 shared all the specs with the previous 365-horsepower 327, with the fuelie heads, the Duntov cam, an aluminum intake, and Holley carb. instead of 50 oz. Learn how your comment data is processed. The best aluminum heads for 302, without a doubt, have an effect on the vehicle's RPM. I just got a block that is 289 .30 over and I wanted to reuse my pistons I think they are sealed power 7006p (obsolete now). You would need a Boss 302 manifold for the intake. The term refurbished was definitely stretched here: the screws are different colors from the black casing, the bottom rubber footers are looking like they have decayed so that the laptop wobbles, the side has a port that was left wide open with a broken/cracked piece and then when you try to open it, the screen side sticks to the keyboard side like it has a gummy residue of some sort on it. Very limited suppliers of flathead parts always look to speedway for my hotrod items. I first installed an oil trap in the PVC thinking something went wrong with the piston rings. Thesecret to a long life stroker is to add wieght to the crank so you can exterally balance @ 28 oz. Flat cylinder heads have large water capacity and excellent breathing characteristics. . They show to be suitable for the 221-302 Ford Small Block. Evidently youre research people are either misinformed, or just dont really care about building anything ford. The heads alone are excellent fit and quality. So now, we have a pair of legends, being compared on the dyno. We'll squeeze all of this into these few short pages, which means we have a long way to go and a short time to get there. The cam featured 290 degrees duration and .477 in (12.1 mm) of lift. 1.290 in Spring. Assembled. FORD MUSTANG 302 CYLINDER HEADS Pre-Owned $177.50 classicautoresto (4,195) 100% or Best Offer +$199.05 shipping Sponsored ARP 154-4206 Black Ford New Boss 302 w/351C heads 12pt hsk In Stock Ready to Ship Best Deals Fast Shipping Brand New $250.99 partshawk (68,956) 99% List price: $367.99 32% off Buy It Now Free 4 day shipping Sponsored It will have screw-in core plugs and a four-bolt main block if it is a Boss 302. Sold individually. Dells are ok computers. Pontiac was the outlaw division. Cast aluminum block and heads: Intake Manifold: Composite Boss 302 Specific with shell-welded and runner pack: Exhaust Manifold: Tubular . I bought an external mouse/keyboard because the distance from the keyboard and mouse to the edge of the laptop are a bit far for my small hands. 188cc Intake/63cc Exhaust Port Volume. He used a correct Duntov camshaft and set the lash a little tighter than the original spec, at .020-inch. These heads are always perfect, but could use a little bowl work thanks team SUMMIT. I was actually pleasantly surprised at the swirl polished valves and the large spring pockets for if you want to run larger springs with a monster cam! I HAD TO CHANGE OUT THE SPRINGS FOR ONES WITH MORE PRESSURE DUE TO VALVE FLOAT AND I AM ONLY RUNNING AN E303 CAM. The heads offered an excellent midrange power curve, behind only the Twisted Wedge casting between 4,000 and 5,500 rpm. I think I have seen afrermarket heads but cannot rememmber where. 1-330-630-1555 1-888-841-6556. . It ran a regular head that was tweaked (either before the slicing or class requirement). I was trying to find a set of heads that will produce 300ish hp. Thanks to all who helped us get here. What? 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