On episode 19 of Engine Masters, David Freiburger explains cam lift, duration, lobe separation angle, and installed centerline. Cross Boss 302 Mustang off highway use. 0:1 on blocks with a 3/16 base relief (stock bore and stroke). Cylinder heads are available fully assembled or as bare castings. . The brute 427 FE Series big block that won Le Mans also reigned supreme in limited production 1964 Thunderbolt Fairlanes in NHRA competition. They have cast iron seats and guides (titanium valve compatible) and are set up for studs and guide plates. You might even be able to get some rejects since you'd be cutting them up and remaching anyway. All in all, Im not a fan of this series from Dell. If you're drag racing in a class where the weight of the car divided by the cubic inches determines what class you run in, it may be advantageous to drop the displacement a little if it will allow you to get into the faster side of a slower class. The J code 302-4V was only made in 68. As with our small-block Chevy head test, we will evaluate each of these small-block Ford cylinder heads using several different categories in addition to peak torque and horsepower. Cylinder Head. When the SCCA started the Trans-Am series. 165 cc Intake. . The heads offered an excellent midrange power curve, behind only the Twisted Wedge casting between 4,000 and 5,500 rpm. Have a 70 351 4v stored 25 yrs 50 k miles complete minus carb dist has manifolds 1800. never lube the seal lip ? The real question is, what do these factory motors make, and how do they compare to each other?. What I have found out so far, the engine runs. Generator stud kit for 1938-48, use #8506. 1970 - D0ZE-6090-A or B. It had to sneak the GTO in under the radar of upper management. The finishing order for peak torque realigned slightly, with TFS out front, RHS coming in a strong second, and Edelbrock and Ford tied for third. Do 302 cylinder heads increase RPM? These Ford heads tied with the Edelbrock heads for third place in average torque and were extremely close to the RHS head's second-place power level. I also figured that the DZ 302s smaller heads, with better port velocity and more compression, would make more peak torque. Heads are sold individually. one of the hotrod magazines did an article on the combo back in the 70's. Crate Engine, 302 C.I.D. But for perhaps a majority of enthusiasts, this evaluation may be too simplistic. 351C 4V heads (same as Boss 302 heads except where the water exits the head) are really overkill a street motor. We tried this formula to see what our basically stock BOSS 302 would do. It came with aluminum heads that were way too big for the cam and my use. 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. . Needless to say the head kicked ***. It features a forged dome piston to bring compression up to the original 11.0:1 compression ratio with the 64cc 186 casting fuelie heads. Build your own custom newsletter with the content you love from EngineLabs, directly to your inbox, absolutely FREE! The F code 302-2V was made from 68-73. What type of heads fit a Boss 302 block? They are Worth it. crank, offset-grinding it to a smaller crankpin diam. Small block Ford PRO1 20 170cc Aluminum cylinder heads feature high flowing as cast ports with profiled valve guide bosses and are bowl blended on 5-axis CNC machining centers. THAT IS UNACCEPTABLE IN MY BOOK. Above you see a casting with a D1ZE part number. This is the 2012-2013 BOSS 302 cylinder head casting, M-6050-M50 and M-6049-M50 (shown), which really is a different casting of an improved 356 aluminum alloy (versus 319 with base Coyote heads) with CNC-machined ports and chambers. Exhausts have only a. Batten of Romulus, Mich who did the furnance-blazed heads. Besides the hemi-style heads themselves, the benefits of this new setup are many: For instance, a deck thickness of 0.7 inch to encourage safe use of power-adders, and full water jackets for proper cooling. He stated he spent over $10,000 back then. Won't work with the 289 stroke. loading. Edelbrock E-Street cylinder heads are just the ticket. How can you call it racing if you're putting the brakes on before the finish line? You may also cruise the online auctions for a vintage 5.0L roller block (F1AZ-6010-B). Well, I got about 500 miles on the engine now and couldnt be happier about the build. THE FIRST SET I PURCHASED WERE LIKE THIS AND I INSTALLED WITHOUT CHECKING THEM. Ford went to Le Mans and beat Ferrari not once, but four times, settling an age-old dispute over who had had the fastest cars in the world. It ran a regular head that was tweaked (either before the slicing or class requirement). As far as I'm aware you only choice for factory heads in the Boss 302. Fits on Dodge ramcharger, monaco, w100 series, sierra, pioneer, d300 pickup, d100 series, custom. instead of 50 oz. To pull this off, we needed a durable mule, so we chose Ford Racing's Boss 302 345-hp crate engine that comes with a set of aluminum heads actuated by a .480-inch lift B303 hydraulic. Buy It Now +C $186.98 shipping estimate. [IMG]http://home.pacbell.net/kketell/USAFlag2.gif[/IMG][IMG]http://a8.cpimg.com/image/56/2C/8548438-4e05-00C8003F-.jpg[/IMG]. He used a correct Duntov camshaft and set the lash a little tighter than the original spec, at .020-inch. 45 degree spark plug wires work great with these heads. 300 HP wouldn't be far off. Assembled. I SENT THEM RIGHT BACK. The Ford Racing X307 head is not the casting that comes on the Boss 302 crate engine, but its affordable price made it a natural choice for this test. 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. These features improve an engines efficiency, resulting in more horsepower and torque and improved mileage potential. This conversion was well documented and fairly popular when aftermarket heads were not available. This provided more room for larger valves instead of the standard side-by-side arrangement. See the top reviewed local exterior and siding contractors in Hohenthann, Bavaria, Germany on Houzz. good luck with that. IF YOU DO THIS BE SURE TO USE PERMATEX #2 ON THE INTAKE STUDS. Alum. I changed the thermostat so it would dump alittle more gas in her no problems so for. Moving to the Blue Oval, we see that they went with a milder profile. Brand New. The BOSS 302 Registry is not affiliated with the Ford Motor Company. See it here: yes its ben done. Im extremely disappointed in this blog.. 10 years????? The store will not work correctly in the case when cookies are disabled. unfortunately I missed the return window due to illness. 60 exhaust valves. All they had to do was make the piston dome bigger on the 302 to keep the same 11:1 compression ratio.. Did you get them at a Chevy garage sale? The best aluminum heads for 302, without a doubt, have an effect on the vehicle's RPM. The Boss was topped off with an original aluminum. it still has the vista 7 sticker on the palm rest area. Fig. and if you want to use a high-lift cam or supercharger; thats no problem, either. The factory Boss 302 did not have a deep sump pan although it did have a baffle in the sump, and yes it has 1.73 ratio rockers from Ford. Once I pick the heads I was going to find a good cam for daily driving/ performance. Great bang for your buck with these heads. There is no flat spot and these engines will pull from 2000 against any rival including a Windsor. Though peak horsepower is a quick reference point for evaluation, we prefer to use average power in these comparisons because it always produces a better picture of overall performance. The 363 uses FRPP Z2 cylinder heads. They are rugged and ribbed internally and externally for more strength. 030 AND 2 OF THEM WERE. 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. The most notable thing about the Flo-Tek heads available through Speedway Motors is the pricethat's $739.98 for a complete, ready-to-bolt-on pair of aluminum heads for a small-block Ford. 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. Index your plugs on these engines. Both had dual-plane high-rise intakes and big Holley carbs. Batten cyl heads was instrumental in developing the high port exhaust for the Dyno Dons and Bob G's and Jack Roushes. 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 306-horse 289 cubic inch High Performance small-block V-8 in Shelby GT350s took on Corvette and the rest and managed to spank Americas sports car in SCCA competition. In my 70 years of fooling with cars, we always had a formula. Don't know if it's still good. Great option. The modern combustion chamber designs improve the combustion process and larger than stock intake and exhaust ports move more air through your engine for improve efficiency. Single angle amateur valve job and it was pretty sad looking At this point I called edelbrock and they gave me the song and dance so I called Jegs and they issued a return. reach with flat gasket seat. For a better experience, please enable JavaScript in your browser before proceeding. The Fora platform includes forum software by XenForo. A factory high-rise dual-plane intake manifold was used, with one part not period-correct. The intake is off a 1965 Shellby. The 68 F code had 10:1 compression and made 210 bhp. Something is very wrong with this, a blueprinted stocker should be in the 375-400 HP range. Aluminum. Bolts in anywhere a 302 will go with the right headers and pan. Thesecret to a long life stroker is to add wieght to the crank so you can exterally balance @ 28 oz. BluePrint Engines stand in front of the class, offering both performance and cost-conscious enthusiasts a powerful alternativeMuscle Series cylinder heads. Huge difference in quality. These heads are coated with assembly lube out of the box. The Edelbrock Flathead Cylinder Head is made of A356 aluminum T-6 tempered cylinder head. There are still 6 other steam holes not present in the 5073 head that are in the 350 block circa 1972. It's important to note that this was the only head in our test that required its own separate valvetrain. They used the 3 center sections of the heads. Both companies decided to develop a 302 combination via the previously mentioned four-inch bore and three-inch stroke. A forum community dedicated to vintage Ford Mustang owners and enthusiasts. While the Boss 302 was normally considered a 302 with 351 Cleveland heads, these canted-valve heads were used first on the Boss before the rest of the Cleveland was developed. I am building a budget 440 RV motor that should be a monster street tire smoker for under $3000. The Boss 302 takes the Mustang GT's suspension and adds higher-rate coil springs, stiffer bushings, and a larger diameter rear stabilizer bar. And really, its a difference in the philosophy behind these two motors. It was what the SCCA mandated for street homologation. 289 & 302 (Except Boss 302), Dual Plane [Natural] (27) $207.99. Pontiac was the outlaw division. If this becomes a bit more subjective by adding in power (and why wouldn't you? The Dart castings would have been the Iron Eagle versions, and the Pro Comps are affordable in aluminum. Would modifying the heads bring down the value of the heads? The connecting rods began life as the same C3AE rod as the 289 HiPo but they had 3/8" bolts and they were spot faced instead of broached where the head of the bolt sits. You'll notice that we attenuated the horsepower graph to include just the power curve between 4,000 and 6,200 rpm. The BOSS 302's biggest shortcoming is port sizing, which is something Ford has rarely been able to get right. It collects next to nothing. No drilling is required since it appears they updated the manufacturing process to eliminate this need. The 4-bolt caps can be seen here. 154-3702: SB Ford 302W 12pt Head Bolt Kit. Combined with the big bore and short stroke, everyone thought these things wanna rev. The reality is that the head flow and dual-plane intake really limited the RPM.. stud kit is of poor quality everything else in my order was good quality. When you do that, you can see that the TFS head did substantially better than all the other heads above about 4,400 rpm. Renegade Street. Ford Racing teamed up with Jon Kaase to redesign their 429 Cobra Jet cylinder heads, and the results are these Super Cobra Jet heads. The compression ratio is 8. The Cleveland type heads are used in the 302 heads. These are perfect for the low compression big blocks of the mid to late 70s. Using the native mouse is awkward. Before jumping right into the dyno numbers, we need to look at the engines backgrounds to truly understand why they were built, and why they are so equal. They dont flow as well as some of the more expensive options available but they flow way better than OEM cast iron heads. Condition does not matter! Im not sure what has happened to Edelbrock, but their quality control sucks. The Fora platform includes forum software by XenForo. Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4in. 2.02/1.60 in Valves. These are perfect for their intended use, the street. These ford flathead cylinder heads feature original edelbrock script logo design for fords and mercurys. BluePrint Engines Ford 302 C.I.D. 1/23 . LOOKS AND PERFORMED GREAT. Edelbrock Performer RPM Cylinder Heads - Ford 351C Custom Camshafts, Valvetrain, Valve Springs, Push Rods, Timing Sets www.flowtechinduction.com "Generations above them were never perfect. Looking at the graph, it looks like the DZ 302 actually outperforms the Boss 302 from 3,700 rpm until 5,800rpm. You will need the boss piston to go with the canted valves.. No. Opens in a new window or tab. 02 intake/1. The Good and Bad of the head bolts on the SBF is that their are only 8 of them. 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 are awesome and fit great! $1,692.99. However, this time it boasted 412 Horsepower and 390 lb-ft Torque! Be the first to rate this post. 015 AND THE REST WERE. Cast aluminum block and heads: Intake Manifold: Composite Boss 302 Specific with shell-welded and runner pack: Exhaust Manifold: Tubular . Tell ya what ,leave the ford enginrs to the ford guys, and you keep playing with that some ole cookie cutter bowtie garbage youre so used to. As you can see from these numbers, the Cleveland-style Boss 302 cylinder heads offer significantly more airflow at each valve opening point over the DZ 302s fuelie heads. Even the stock cam should peek higher than 5500 rpm. 4V. The factory 780cfm carburetors are really, really expensive, and we didnt want to spend a few thousand dollars on a carburetor, explains Holdener. [The Boss] cylinder head came about after Fords experience with the tunnel port cylinder head where they learned lots of head flow equals lots of power, Holdener relates. 165 cc Intake. It was rated at 10.5:1 compression and 230 bhp (Shelby was rated at 250). Part of the difference in valve lift numbers between the two is the rocker arm ratios used from the factory. To clear up a few questions, the combustion chambers are 60cc, not 64cc. This 302 was in a F250 so I have to find the proper oil pan to fit the 83 foxbody, and proper fit for the oil dipstick entering the oil pan. We will safeguard your e-mail and only send content you request. Ultimately, the best cylinder head for your Ford 302 will depend on your specific goals and needs. Plus we used cam dial-in and it was only off a half degree. from United States. When I set the carb I get a bouncing vacum needle at idle, Ive been told thats a sign of a sticking valve. Guys if you want to make serious power. You MUST flycut the valve reliefs on the pistons larger if using stock pistons. No more dyno there. The stroke difference between the two engines amounted . Because of the pent-roof design of the heads, the Boss also had forged pop-up pistons to achieve the desired 10.5:1 compression ratio. At RHP reasonably well ported (340+ / 200) set of iron heads with large S/S valves, manganese bronze guides, p/c seals, rocker studs and guideplates are $1,695 exchange. I thought the bolt pattern was the same, that is what helped to make the swap work. They are also cast with combustion Im just hoping the new Edelbrock intake that arrived yesterday is better than these. And you'd have to replace the factory two-piece valves which are known to come apart randomly for no reason. Purchased a long block on CL. Come join the discussion about restoration, modifications, NOS parts, troubleshooting, VIN codes, and more! 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. Not even close to what I thought I should be getting in a brand new set of heads. So Im into changing springs, retainers, locators, etc. It's also worth mentioning that due to a variety of scheduling and deadline pressures, the offerings from Dart and Pro Comp Electronics, both of which fit within our price prerequisite, didn't make the test. The 69 and 70 F code 302's are rated at 220 bhp. After a couple of good seasons of running competitively with the big blocks a couple of guys showed up with a custom head that consisted of two V-8 Ford heads that had a combustion chamber removed from each end and were furnace bronzed together in the middle. Next, we test a low-rpm cam and a high-rpm cam in the same engine to demonstrate the power differences. NOS 1969 1970 Mustang Boss 302 speedometer. The heads are a direct replacement for previous Twisted Wedge heads and work with all Twisted Wedge specific pistons. Edlebrock is one of the few companies making great performance parts for small block Fords. The BOSS 302s biggest shortcoming is port sizing, which is something Ford has rarely been able to get right. 2. First of all. Parts made from tooling for the cancelled 1971 BOSS 302 were used for service. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. . While it only had .480-inch of lift, that duration would really allow the RPM to climb. 010 runout and wouldnt come out of the head without a lot of force (we never took it out). I have a Eldabrock Performer intake,msd distributor and 6al box and a 61mm bbk throttle body. That puts lift over .500 inch .514 according to our calculations, minus the lash, Holdener reveals. This includes 260, 289, 302, Boss 302, 351W and related variants. Works with most standard components. I KNOW FROM EXPERIENCE. 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). Come join the discussion about restoration, modifications, NOS parts, troubleshooting, VIN codes, and more! When the vacuum is high, the intake is sucking oil through the valves. DART . Budget iron can run $1195.00 for an easy 500 + hp but any more needs more valve area. But as others have mentioned there are modifications that must be done to make it work. Sure there's someone on here that could tell you what heads you have would be better but with the right (mild) cam, good intake, etc. Both of these options caused an internal vacuum leak because my intake sat low and the end seals did not let the intake ports seal like they should have. Comparing the cylinder heads on paper, using data collected by Holdener for a previous article, the Boss heads clearly come out ahead. It had a description amd Alan Johnson Cylinder Heads listed as the vendor and contact #805-922-1202. Weve got 302 fords with gt40 3 bar heads making over 500 hp. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Here you can see exactly where each engine outshined the other, and by how much. I understand why now they are so much more money! TRW developed these pistons and suppled Ford with them for both racing and production engines. The supplied ones are generic and poor fitting. The BOSS 302 engine could use better cylinder heads with right-size port and valve sizing in a set of Trick Flow cylinder heads and a more compatible roller mechanical camshaft. The block is a 1980 302 Winsor. Speedway and Try-State Cylinder heads both stand behind this product. http://fordsix.com/forum/viewtopic.php?t=33048, 1971 Ford Maverick - Budget 10-Second Turbocharged Maverick Coupe - Car Craft Magazine. We discovered this was a 1969-70 BOSS 302 head modified for use on a 351C. 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. Ford Racing's Z heads (PN M-6049-Z304DA, 63cc chamber, 2.02-inch intake valve, $1,695) are the next step in bolt-on performance castings for small-block Ford engines that see street and on-track . Experimental Boss 302 style heads . The BOSS piston was a unique item, configured to use the 289HP rod with the 302 stroke. The 1968 Trans Am season was a disaster. The BOSS 302 engine could use better cylinder heads with right-size port and valve sizing in a set of Trick Flow cylinder heads and a more compatible roller mechanical camshaft. While the DZ 302 had a stronger midrange than the Boss 302, in stock form, the Boss reigns supreme in the higher RPM range. No stick hole up top. Pic 2 is a spot next to a water port on the intake surface where it looks like the facing tool tilted some. Come join the discussion about restoration, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more! 60 cc Chamber. Dimensions in Inches (LxWxH): 24.1 x 24.1 x 8.7. I am running them on a 302 and purchased this set for a 351 build. the engine was called a "boss 289" not a clevor, a clevor was a 351W with 351C heads and a custom intake. It would make a nice high rpm engine that was pretty soft on the lower end where you spend the most time. in 1969 with Doug Durham and me ,TED FORDMAN EHRHARDT who took a new Boss 302 short block apart and checked all specs. Stroke that thing. Pair. Recently, we posted an article in which Richard Holdener dyno tested the five-liter powerhouses put out by the Blue Oval and the General in the 1980s. we all have our shortcomings. 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. Otherwise, pair these with some flat top pistons with the correct valve reliefs. This is my first engine build, let me know if Im doing it all wrong. (BOSS) Cylinder Head 190cc Assembled. AFR - Airflow . If I wasnt on a time crunch, I would have returned these heads. . Any who, this is a work laptop, and it started out pretty fast, but over time, it eventually slowed down. I was going to have my reconnecting rods reconditioned with 5/16 arp bolts. To complete the Boss, we added an Edelbrock Performer RPM intake, a Holley 750-cfm, mechanical-secondary HP carb, MSD distributor, and a set of open dyno exhaust headers, and we were ready to rumble. I had 90 runs on an original Boss 302 in a 70 Mustang. detroit metro auto parts "302" - craigslist. These are certainly worthy of attention at this excellent price. 1969 But for the rest of us, choosing a cylinder head might be a complex algorithm of price, power, brand loyalty, ease of installation, head bolt size, and maybe even shoe size if you're that compulsive.
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