It had a close ratio 4 speed transmission, a 3.50:1 rear axle, a staggered shock competition suspension and a 16 : 1 steering box. 3/1 . 22-25 Ft/Lbs - Iron Heads. Other than that it was OK. The combustion chambers are filled with a 2.150-inch, 7mm-stem titanium intake valve, and a 1.60-inch, 7mm-stem titanium exhaust valve. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Does anyone remember the six cylinder heads they made for Bruce Sizemore. 1970 Fastback (to be finished outside as a Boss 302 tribute), thanks for all the responces! Roush? Jeff Speegle Come see us @ ConcoursMustang.com MCA Shelby Judge, SAAC & Team Shelby Judge (in no particular order . DONT USE ANYTHING ELSE OR IT WILL LEAK. 0:1 on blocks with a 3/16 base relief (stock bore and stroke). Combine Edelbrock quality with excellent power and a highly competitive price, and the E-Street Edelbrock heads strike us as an excellent choice. Are you looking for a set of entry-level street performance heads for your modern street rod, musclecar, or truck? Your email address will not be published. Today, the aftermarket lineup of Ford cylinder heads has plenty of castings from which to choose. Had to mill out some (- one hour with a Dremel), to get my stock distributor clamp to fit. I really liked my 69 428 CJ. Ford Aftermarket. They had problems with the 69 heads..made some changes in 70 and won the Trans Am races.So 70 or 71 heads are the better heads. Thx. 040 roller short block A little lope at idle but it pulls everywhere in the rpm range. Evidently youre research people are either misinformed, or just dont really care about building anything ford. This has been done and is generally called a Clevor (using Cleveland heads on a SBF). very poorly packaged, opened it and there was no screen protection sheet between screen and keyboard. These are perfect for the low compression big blocks of the mid to late 70s. Cast from prime A356 T6 aluminum, these "Z" heads from Ford Racing were designed using solid modeling technology. instead of 50 oz. Pic 2 is a spot next to a water port on the intake surface where it looks like the facing tool tilted some. refresh the page. Edelbrock 5025: Cylinder Heads, E-Street, Aluminum, Assembled, 60cc Chamber, 170cc Intake Runner, Ford, 289, 302, 351W, Pair Are you looking for a set of entry-level street performance heads for your modern street rod, muscle car, or truck? The cylinder head is bolted to the engine block and sits above the pistons. In 1970 the Boss 302 was a Camaro killer, it could go 0-60 mph in 6.0 seconds. After idling for a couple of minutes the engine will start smoking horribly. We'll send you raw engine tech articles, news, features, and videos every week from EngineLabs. The Boss 302 and 351C-4V head casting are the same except for a minor difference in water passages. If I were to shop for a personal laptop, Id never consider this laptop based purely on what it looks like. We learned on the first few pulls that we had too much carburetor with our 750 cfm Holley 4160 and too little camshaft. 300 HP wouldn't be far off. My fault for not setting the intake on the engine to check my end gaps. Pontiac was the outlaw division. 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. After the engine is warmed up to its proper operating temperature range, you must go back and reset all the valves to the proper "hot" valve lash settings. it boots up ok but not as fast as my other i5 laptop. Won't work with the 289 stroke. For the testing, Holdener put together a non-numbers matching replica of the DZ 302. 1970 - D0ZE-6090-A or B. The product is a great entry level/cheap head though so 5 stars! GT40 heads use 1.84 intake / 1.54 exhaust. The BOSS head was functionally identical to the 351C 4V head. Pic 3 shows what looks like an area of casting slag that was missed when they were cutting and cleaning out the valve seats and runner. Im looking to build an engine that produces 300ish hp. The connecting rods and crankshaft are made of forged steel, and the heads are aluminum with roller rocker arms. 015 AND THE REST WERE. Install the gaskets with the raised seal towards the head and it will fit the ports much better. unfortunately I missed the return window due to illness. Cast aluminum block and heads: Intake Manifold: Composite Boss 302 Specific with shell-welded and runner pack: Exhaust Manifold: Tubular . The Fora platform includes forum software by XenForo. WITH THE STIFFER SPRINGS I REALIZED THE PEDESTAL MOUNT ROCKERS WOULD MOST LIKE FAIL SO I MACHINED THE PEDESTAL PADS, DRILLED AND TAPPED AND INSTALLED HELI COILS FOR ROCKER STUDS. 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. Edelbrock E-Street cylinder heads are ideal for entry level street performance engines. Because the new 351 engine had the same bore spacing as the 289/302, it seemed logical for Ford to adapt this high-performance cylinder head to the small-block Ford V8. 1969 mustang fastback boss 429 351 race car front end. Cylinder heads casting ID decode for 260 289 302 351 390 406 427 428 429 460FE Boss Shelby. This head is intended for a flat-tappet camshaft, so it was outfitted with a small-diameter spring that might have limited its performance in the midrange slightly. And, he decided to make that happen. We got our answer. 1969 Intake - 2.23 inches Exhaust - 1.72 inches. It was honestly a guess on my part and the Tech had no additional information or opinion to offer. $1,692.99. good luck with that. The Cleveland style head featured a staggered, canted valve arrangement. Search 6 Hohenthann siding contractors & companies to find the best exterior and siding contractor for your project. Years ago there was a six cylinder weight break for the late model classes at one of the local dirt tracks that I would frequent. Edelbrock 5025: Cylinder Heads, E-Street, Aluminum, Assembled, 60cc Chamber, 170cc Intake Runner, Ford, 289, 302, 351W, Pair - Are you looking for a set of entry-level street performance heads for your modern street rod, muscle car, or truck? saving. No drilling is required since it appears they updated the manufacturing process to eliminate this need. 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. Some of the guys were running ford 300 six cylinders with good success. 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. But the springs they come with are for a hydraulic roller cam. Expensive mistake. My first work Dell was super slow and sluggish, so I was sent a new one. The Dart castings would have been the Iron Eagle versions, and the Pro Comps are affordable in aluminum. It would make a nice high rpm engine that was pretty soft on the lower end where you spend the most time. This particular evaluation only works, however, if lowest cost is the highest priority. FORD 5.0L/302 Cylinder Heads. 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 had 90 runs on an original Boss 302 in a 70 Mustang. They use a Cleveland style quench chamber and standard 302 Boss/351 Boss/351C/351 SVO valve train parts (will accept 2.19"/1.71" valves). 125 of silicone is likely to blow out. 9 intake valves since they bolt on easy with no modification necessary. 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. Batten was at the top of their game then and were welding up and porting the best bow tie heads on the planet back then, besides all the othher stuff. Does any 351 Cleveland head fit it? These new aluminum hemi heads will bolt directly to any small-block Ford from a 289/302 all the way up to 351W as well as Cleveland engines. And you'd have to replace the factory two-piece valves which are known to come apart randomly for no reason. would love to return this old jalopy back!!!. The connection with metered networks (or connecting to your phones hotspot) appear to deteriorate over time, and causes this error. And really, its a difference in the philosophy behind these two motors. 02 intake/1. Not the 2012-13 Coyote DOHC BOSS, but instead the genuine pushrod original from an era when Ford did the unthinkable repeatedlyand won! 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 68 J and F code heads show to be the same in my information. Im looking for three Ford Cleveland 4V engines. Pair. I figured the Boss would make peak power. These heads use the same valves, valve springs, retainers, and 7/16 in. Alum. These heads are coated with assembly lube out of the box. What I have found out so far, the engine runs. my signature linesnot really directed at anyone in particular.. 58 cc Chamber. It's important to note that this was the only head in our test that required its own separate valvetrain. The Fora platform includes forum software by XenForo. Since the Windsor block was already a thing, the Blue Oval team decided to fit a set of Cleveland style heads to the short-block and create the Boss 302. THE NEXT ISSUE WAS VALVE SPRING INSTALL HEIGHT. The Chevrolet used a 1.50:1 rocker, while on the Cleveland head, they used a 1.73 ratio. However, way down low, where the big-port Boss 302 motor isnt supposed to work, it made decent low-speed torque. If you are looking for a set of World aluminum heads, you can find them at Bill Mitchell Products. But, I just came across this website and happened to ask about B. Sizemor's 6. Throw a blue oval flag over the RHS, Edelbrock, and Ford heads, and the performance is very similar. So now, we have a pair of legends, being compared on the dyno. . in 1969 with Doug Durham and me ,TED FORDMAN EHRHARDT who took a new Boss 302 short block apart and checked all specs. Ford Performance Cylinder Head X2 Street. 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. Would it mess with the computer really bad. The BOSS 302's biggest shortcoming is port sizing, which is something Ford has rarely been able to get right. We will admit to you our results on the dyno were disappointing304 horsepower and 288 lb.-ft. of torque. The spark plugs are also positioned well, and I cant foresee any interference with any headers. Ports 2.38" x 1.68" C9ZZ-9424-C. C9ZE-9425-A . When I set the carb I get a bouncing vacum needle at idle, Ive been told thats a sign of a sticking valve. supershifter2 :shocked: :shaking: < :bs: ! It didnt conform to corporate protocol and invented the muscle car in its 1964 GTO. [IMG]http://home.pacbell.net/kketell/USAFlag2.gif[/IMG][IMG]http://a8.cpimg.com/image/56/2C/8548438-4e05-00C8003F-.jpg[/IMG]. saw a pair of Boss 302 heads online for $400 and thought why not. 1.290 in Spring. A forum community dedicated to hot rod owners and enthusiasts. I KNOW FROM EXPERIENCE. So, instead, they ran a simple 750cfm Holley carburetor, along with 1-3/4-inch dyno headers. Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4 reach with flat gasket seat. Then Ill be looking for upgrades. Low mileage 440 from an RV, Hughes Whiplash cam and lifters, E-Street heads and RPM intake topped with a Quick Fuel Brawler 850 double pumper. This made-in-the-USA head is Edelbrock's value leader. What cam specs and static CR? I SENT THEM RIGHT BACK. Rugged, ribbed internally and externally, with a large water capacity and excellent breathing characteristics. Cover Autolite 4V casting D0ZX9B48-3 . The store will not work correctly in the case when cookies are disabled. Aluminum heads are affordable, lighter and will make more power. But as we've seen before, the heads that produce the best peak power also tend to do so throughout the entire rpm band. There are many different types of cylinder heads for Ford 302 engines, so it is difficult to make a definitive conclusion about them. We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. 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. Although we thought that the previous 302 Windsor vs 305 TPI was a pretty fair test of two era-and market-specific competitors, this has to be the ultimate level-playing-field. http://forums.vintage-mustang.com/vintage-mustang-forum/721154-1970-mach-1-h-code-build.html. For use only with Special heads . 60 cc Chamber. NOS 1969 1970 Mustang Boss 302 speedometer. Bolts in anywhere a 302 will go with the right headers and pan. Not too much carb for this engine. Age Group: adult. The BOSS piston was a unique item, configured to use the 289HP rod with the 302 stroke. They topped a 302 Windsor with the Cleveland -style heads, making the first Clevor. I was wondering how these heads would work on my 97 5. stock rebuild,. This minor tune-up would really improve the flow curve and add a measurable amount of torque. That tradition dates back to the companys founding in 1903. It was a world beater and symbolic of the end of the classic muscle car era. Opens in a new window or tab. Have a 70 351 4v stored 25 yrs 50 k miles complete minus carb dist has manifolds 1800. never lube the seal lip ? 70 Boss 302 intake 2.19 / exhaust 1.71. True but it seems excessive to me. I work in IT, so I know a good laptop/PC when I use one. Hate to tell you this but a BOSS 302 has Cleveland type heads. The 240 and 300 are basically the same engine -- based on the same block design anyway. The cylinder head is an important component of the internal combustion engine in a Ford 302 car. These Ford cylinder heads all feature between 170cc and 180cc intake port volumes and offer excellent performance potential over even the best production iron 5.0-liter heads. The BOSS 302 Registry is not affiliated with the Ford Motor Company. 1970 Intake - 2.19 inches Exhaust - 1.72 inches. The odds of you building a vintage Ford BOSS 302 engine are slim because Ford built so few and so many are already spoken for. Works with most standard components. On episode 19 of Engine Masters, David Freiburger explains cam lift, duration, lobe separation angle, and installed centerline. 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 . No mention of those holes in the instructions. These are perfect for their intended use, the street. The darned thing was rabid dog fast. I expected cleanup, but not like this. Topping off the Boss 302 was a specially designed aluminum dual-plane intake manifold mounting a 780-CFM Holley four-barrel carburetor, covered by a closed air cleaner assembly with a single inlet snorkel and a ribbed, domed lid that was also chrome-plated. I have certificate for it. 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). 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. Turbo 300-inch Ford can bang off 10.90s at 120 mph. 58 cc Chamber. There are still 6 other steam holes not present in the 5073 head that are in the 350 block circa 1972. Edelbrock E-Street cylinder heads are just the ticket. Exhausts have only a. Just my thought. And the reality is, they did, in modified trim the way they were raced in the Trans-Am series. Needless to say the head kicked ***. I think it was Bruce Sizemore that ran an H/MP Maverick that held the class record for a while during the 70s. Valve stem heights all the same, decent springs, work fine for my rolller cam, good fit and finish. Our FDC has over 150 racing members and FORD promised us Hubert Platts Drag Mustang after series which disappeared. They dont flow as well as some of the more expensive options available but they flow way better than OEM cast iron heads. Aluminum. There is no flat spot and these engines will pull from 2000 against any rival including a Windsor. Aluminum Block Aluminum Heads - Subtract .012? Don't know what the compression ratio would be with those pistons you mentioned but don't forget the HI-PO 289 produced 271 horses with 10.5 compression. These heads feature A356 aluminum castings that are heat-treated to T-6 specs for superior casting strength and quality. The biggest difference between the two engines is the cylinder heads.. The DZ 302 used a 1.5:0 ratio, while the Boss 302 head used a larger 1.72:1 ratio. Street 512 Mopar motor in a Dodge Dart . I think that a race head is available through someone that is all aluminum. These aluminum heads can be directly installed on all small-block Fords: 289, 302, 351W and, with some modifications, even 351C engine blocks. extreme amount of burrs left all around the rocker shaft mounting pads. Street Cruiser Cylinder Head. It had to sneak the GTO in under the radar of upper management. Greg has spent eighteen years and counting in automotive publishing, with most of his work having a very technical focus. 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. Im extremely disappointed in this blog.. 10 years????? Be the first to rate this post. Nevertheless, for a street engine, this head delivers excellent midrange power. But for perhaps a majority of enthusiasts, this evaluation may be too simplistic. it will be a "high winder" and with a bullet proof bottom end and a 4 bolt block could run to 10,000 rpm b 4 exploading ! Ever wonder what those camshaft specification numbers really mean and how they affect engine performance? Building LS garbage? 125 of gap at the front and rear ends and you are running a blower or a turbo then I would suggest making some spacers to take up the gap on the ends because anything over. These are perfect for a street build and the price is outstanding!!. Original aluminum Boss 302 valve cover brackets for the spark . 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. $ 5,595.00 Learn More. Edelbrock heads are available in two different versions, with either 1.94- or 2.02-inch intake valves. So your wrong. These lightweight aluminum heads bolt up to your small block Ford and feature 190cc intake/60cc exhaust runners, 60cc combustion chambers, and 2. When you shop through links on our site, we may earn an affiliate commission. I have used them for over 35 years and never seen something like this. I HAD TO CHANGE OUT THE SPRINGS FOR ONES WITH MORE PRESSURE DUE TO VALVE FLOAT AND I AM ONLY RUNNING AN E303 CAM. Edelbrock 5093: Cylinder Heads, E-Street, Aluminum, Assembled, 84cc Chamber, 210cc Intake Runner, Mopar, Big Block, Pair Are you looking for a set of entry-level street performance heads for your modern street rod, muscle car, or truck? Something is very wrong with this, a blueprinted stocker should be in the 375-400 HP range. Prices listed are from the story's original publish date, February 1, 2013. from United States. pulled heads out of box, one head was in very nice shape, ready for service. Assembled. Semi or Farm tractor repair shops would probably have the location of one near you.Now, with all the Aluminum small block head available, you could create a real bad 6. I purchased these because I needed some better than stock, but not full out race heads. 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. Exhaust - 1.72 inches. But there is absolutely something else wrong. Great top end with these heads also. they mandated a 5.0-liter displacement limit. The heads offered an excellent midrange power curve, behind only the Twisted Wedge casting between 4,000 and 5,500 rpm. 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.