Maximum output for less money!. good luck with that. 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. 154-3702: SB Ford 302W 12pt Head Bolt Kit. The heads are Cleveland heads. Both had dual-plane high-rise intakes and big Holley carbs. Aluminum will allow you 1pt up in compression for its ability to shed heat. . Ford Aftermarket. Our test heads came with the larger intakes that clearly contributed to these heads' strong showing. A forum community dedicated to vintage Ford Mustang owners and enthusiasts. No more dyno there. Though the average power was down compared to the TFS, RHS, and Edelbrock heads, the power is still acceptable, especially if you are more interested in getting a nice pair of aluminum heads than ultimate power. DART . 09 of shims installed so they look good. Exhaust - 1.72 inches. Experimental Part . which will help take the wait off the rear main bearing. 1969 Intake - 2.23 inches Exhaust - 1.72 inches. stud-mounted roller rockers as the current Ford Racing 429 Cobra Jet heads, and the standard Cobra Jet intake and exhaust manifolds bolt right on. This combo has been dynod at 460-ish hp at 5000 rpm and 550 ft lbs of torque at 2000 rpm. 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. And then it's gonna be HP you'll make, not a lot of torque. Wait 1.6 rockers? Edelbrock aluminum 2V cylinder heads with a mild camshaft upgrade top its stock Boss 302 block, while a Tremec TKO five-speed gearbox sits in place of the factory toploader four-speed. 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. 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. The Ford heads did well during the testing, making a peak of 362 hp. For what the (complete) Boss heads and a intake will run seems you would be better off just going with a good set of after market heads. Exhausts have only a. Cheaper than some rebuilds. So, instead, they ran a simple 750cfm Holley carburetor, along with 1-3/4-inch dyno headers. Ford has always been a car company that dared to go where no automaker had ever gone before. See the top reviewed local exterior and siding contractors in Hohenthann, Bavaria, Germany on Houzz. They are rugged and ribbed internally and externally for more strength. The recommended spark plug for your typical application is the Champion 792 plug, gapped at. AIR FLOW RESEARCH 1402 SBF 165cc Alum Heads Renegade Street 58cc. Both engines feature a four-inch bore and three-inch stroke, so there are no excuses available for either side regarding minor discrepancies in displacement. Not too much carb for this engine. Won't work with the 289 stroke. Twisted Wedge and Canted valve (TFS and C302b) in aluminum promote even better performance. Street Cruiser Cylinder Head. The TFS heads appeared to be the big dog in the room when it came time for testing. They cut the center two chambers from three Boss 302 heads then welded them together to form an inline six head that bolted on a 300 block! . document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. Generator stud kit for 1938-48, use #8506. Bored out 70-thousandths to 310 cubic inches and with a laundry list of. No stick hole up top. But thanks to all of your responses this is not for me! Thx. They'll work but have you got the Boss heads? The DZ 302 in the Z/28 was a natural marketplace competitor to the Boss 302 from Ford. Because they didnt allow destroking [of an existing engine design] initially, both companies had to build actual displacements of five liters, explains Holdener. The BOSS 302 heads used some of the biggest valves in the industry. Boss 302 is a Windsor engine; uses Windsor cam lobe profile & 1.6 Windsor rockers. detroit metro auto parts "302" - craigslist. A borescope down the intake revealed lots of oil in the intake runners near the valves. I figured the Boss would make peak power. No votes so far! 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. LOOKS AND PERFORMED GREAT. Building LS garbage? To conceive the BOSS 302, Ford had to develop a special forged piston with a significant dome that would reach deep into the 351C heads 64 67cc chambers. 1970 - D0ZE-6090-A or B. It had to sneak the GTO in under the radar of upper management. The TFS heads made an honest 380 hp, but what we found surprising was how well the Edelbrock E-Street head did, with a peak of 371, substantially better than Ford Racing's 362-hp third-place finish. Best for 302-351 cubic inch engines. they mandated a 5.0-liter displacement limit. Today, the aftermarket lineup of Ford cylinder heads has plenty of castings from which to choose. The cam featured 290 degrees duration and .477 in (12.1 mm) of lift. You would need a Boss 302 manifold for the intake. Budget iron can run $1195.00 for an easy 500 + hp but any more needs more valve area. 1.90/1.60 in Valves. detroit metro auto parts "302" - craigslist . The brute 427 FE Series big block that won Le Mans also reigned supreme in limited production 1964 Thunderbolt Fairlanes in NHRA competition. 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! All Cleveland style heads including the BOSS has 1.73 to 1 ratio rockers. There is no flat spot and these engines will pull from 2000 against any rival including a Windsor. BluePrint Engines stand in front of the class, offering both performance and cost-conscious enthusiasts a powerful alternativeMuscle Series cylinder heads. (BOSS) high power capabilities. 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 ! The 363 uses FRPP Z2 cylinder heads. My build is a 306, 9. Get big power on a small budget with BluePrint Muscle Series cylinder heads! Ever wonder what those camshaft specification numbers really mean and how they affect engine performance? FLO-TEK Performance cylinder heads feature as-cast ports and are designed for entry-level street performance applications operating in the idle-to-5500 rpm range. saw a pair of Boss 302 heads online for $400 and thought why not. 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. For the testing, Holdener put together a non-numbers matching replica of the DZ 302. Aluminum. You might even be able to get some rejects since you'd be cutting them up and remaching anyway. Are there any aftermarket heads for it? . Bolts in anywhere a 302 will go with the right headers and pan. 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. Hate to tell you this but a BOSS 302 has Cleveland type heads. Top Rated Seller Top Rated Seller. 165 cc Intake. 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 . extreme amount of burrs left all around the rocker shaft mounting pads. This engine was built in the 80s by someone with way to much money. Above you see a casting with a D1ZE part number. Henry Ford II wasnt going to have it any other way. If I were to shop for a personal laptop, Id never consider this laptop based purely on what it looks like. It didnt conform to corporate protocol and invented the muscle car in its 1964 GTO. refresh the page. 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. 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. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Street 512 Mopar motor in a Dodge Dart . Learn how your comment data is processed. Are you looking for a set of entry-level street performance heads for your modern street rod, musclecar, or truck? It was the most expensive of all the heads we tested. AFR - Airflow . D1ZE service block and aluminum rods. The advantage was better flow because the intake was on one side and the exhaust was on the other. So the induction system is kind of a toss-up. Like with standard 4V heads, you would have to machine the tops of the heads to accept screw-in, adjustable rocker studs. I have used them for over 35 years and never seen something like this. THAT IS UNACCEPTABLE IN MY BOOK. Ive had several other brands, but HP has been the best. 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. Its main function is to seal the combustion chamber and provide a surface for the intake and exhaust valves. There are still 6 other steam holes not present in the 5073 head that are in the 350 block circa 1972. 1 on Pg 2 instructs the used to drill 3 holes if a 400 block is used. PRO1 170 Ford Tech Sheet - H30. 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. in 1969 with Doug Durham and me ,TED FORDMAN EHRHARDT who took a new Boss 302 short block apart and checked all specs. disappointed discovering this situation. Up front, upgraded upper and lower control arms fix some of the shortcomings of the original Ford bits, while out back, a Fays2 suspension Watt's link locates . After idling for a couple of minutes the engine will start smoking horribly. No problem coming off corners at low rpm in higher gears and the pull in the higher gears on top is amazing for what I paid for them. Australian car enthusiast with 30 years experience in the high performance industry. crank, offset-grinding it to a smaller crankpin diam. 546hp @5600 rpm also had 630 ft-lbs torq@ 4400 rpm. I have a 1969 Boss 302 original however I need to reassemble it I originally bought ARIES 10:1 forged pistons I believe 30 over . They dropped off after that. I think the higher RPM one had larger valvesand ports, right? They dont flow as well as some of the more expensive options available but they flow way better than OEM cast iron heads. Edelbrock Performance Cylinder heads are manufactured of A356 aluminum and made in the USA for AMC, Buick, Chevy, Chrysler, Ford, Oldsmobile, & Pontiac engines. Im not sure what has happened to Edelbrock, but their quality control sucks. Don't know if it's still good. 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 HAD TO CHANGE OUT THE SPRINGS FOR ONES WITH MORE PRESSURE DUE TO VALVE FLOAT AND I AM ONLY RUNNING AN E303 CAM. It's all bracket racing. 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They still have classes? but thesell work on a large engine and flow, too. Not even close to what I thought I should be getting in a brand new set of heads. 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. We apologize for the inconvenience What I got was good, but the quality control person should not have let these go out the way they are. View Details. Is it the 69 or 70 Boss 302 head that's more streetable? You will certainly feel that in the car. A tad shorter then a 351W but a little wider due to the size of the heads. Edelbrock heads are available in two different versions, with either 1.94- or 2.02-inch intake valves. . 125 of silicone is likely to blow out. The darned thing was rabid dog fast. The heads are a direct replacement for previous Twisted Wedge heads and work with all Twisted Wedge specific pistons. Very limited suppliers of flathead parts always look to speedway for my hotrod items. More than 400 horses easy. 1969 The rocker studs are 7/16, not 3/8. It used to be listed in the FRRP catalog. Both these motors were factory-rated at the same 290 horsepower, but that number is suspect, says Holdener. Have a 70 351 4v stored 25 yrs 50 k miles complete minus carb dist has manifolds 1800. never lube the seal lip ? This page last updated: February 3, 2022. The head bolts used on a Boss 302 were a flanged-style head bolt. [IMG]http://home.pacbell.net/kketell/USAFlag2.gif[/IMG][IMG]http://a8.cpimg.com/image/56/2C/8548438-4e05-00C8003F-.jpg[/IMG]. Exhaust - 1.72 inches. The winner in this evaluation is almost always the least-expensive head just because of the way the math formula works. Come join the discussion about restoration, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more! From new ones to the aluminum headed one I have in my fairlane now. Fords great success with its powerful V8 engines is legendary. The BOSS head was functionally identical to the 351C 4V head. And, he decided to make that happen. The intake ports flow 382 cfm at .750-inch of lift. Flat cylinder heads have large water capacity and excellent breathing characteristics. The connecting rods and crankshaft are made of forged steel, and the heads are aluminum with roller rocker arms. Better than fighting with iron cylinder heads. on a brand new set of heads. Intake - 2.19 inches When you purchase through links on our site, we may earn an affiliate commission, which supports our community. you need custom pistons, boss intake, boss heads, boss pushrods, custom headers for a 65-66 mustang, 69-70 b2 headers for 67-70 mustang. 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. At the time the first heads were done, I think only cast iron were available so they were furnaced brazed.If you sliced them, any shop that repairs heads could do the work. 22-25 Ft/Lbs - Iron Heads. Cleveland's Crown Jewel. Ford New Boss 302 w/351C HDS Hex Head Stud Kit. We were smart enough to test-fit the heads on the Boss 302 block before testing began and discovered these heads are designed to be used with 7/16-inch head bolts, with restrictors in the head-bolt holes. All they had to do was make the piston dome bigger on the 302 to keep the same 11:1 compression ratio.. The heads also required custom-length Comp Cams pushrods to compensate for the relocated valves. Needless to say the head kicked ***. When we tore apart the first head it was full of shavings and one of intake valves was super tight and one of the exhaust valves was bent w/. 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. 1.290 in Spring. The push-rods needed to be extended using a 2-piece design w/a small aluminum sleeve (that slides in the block) to join the 2 pushrods. Assembled. I first installed an oil trap in the PVC thinking something went wrong with the piston rings. I assumed thats how they went and I also used the end seals. A stock Boss head will support way over 500 horsepower, where the Chevy will struggle at 400 horsepower. The Edelbrock #5073 E-Street cylinder heads are designed for use with 1955-1986 Small-Block Chevy applications. These lightweight aluminum heads bolt up to your small block Ford and feature 190cc intake/60cc exhaust runners, 60cc combustion chambers, and 2. The Fora platform includes forum software by XenForo. Guys if you want to make serious power. 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 KNOW FROM EXPERIENCE. $1,692.99. These features improve an engines efficiency, resulting in more horsepower and torque and improved mileage potential. For high-performance's street and competition, our dual-plane design makes outstanding power from 1500 to 6500 rpm. So howd they stack up? Come join the discussion about restoration, modifications, NOS parts, troubleshooting, VIN codes, and more! While it only had .480-inch of lift, that duration would really allow the RPM to climb. These heads are really impressive!!!!!! very poorly packaged, opened it and there was no screen protection sheet between screen and keyboard. It would make a nice high rpm engine that was pretty soft on the lower end where you spend the most time. Remember this correction adjustment is approximate and is only meant to get you close for the initial start up of the engine. I was trying to find a set of heads that will produce 300ish hp. Those of you who understand the BOSS 302 know Ford fitted these engines with a 780 cfm Holley but not necessarily because thats what they needed. 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. Something is very wrong with this, a blueprinted stocker should be in the 375-400 HP range. They are very capable iron heads. Seems to me that if you get the right kit (ie correct wrist pin centering, rod length, etc), you should have no problem.. aliases: Bossssssman, bosscars, old fart, chat dawg, hey you. That may or may not make your ultimate choice any easier, but if so, you can thank us later. For the 1968 Trans Am season, Ford took the 302 cubic inch Tunnel Port out there in search of victory. THE FIRST SET I PURCHASED WERE LIKE THIS AND I INSTALLED WITHOUT CHECKING THEM. 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. 030 AND 2 OF THEM WERE. So your wrong. Come join the discussion about restoration, modifications, NOS parts, troubleshooting, VIN codes, and more! 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. Its biggest weakness may be the price. The Good and Bad of the head bolts on the SBF is that their are only 8 of them. If it is, then you know what you need to do. We used Comp roller rockers for the remaining heads to level the playing field, but if you are considering a set of these heads, be aware that the rockers and fulcrums need to be considered as well. The drag strip in my area doesn't have any classes. Heads are sold individually. That puts lift over .500 inch .514 according to our calculations, minus the lash, Holdener reveals. These heads use the same valves, valve springs, retainers, and 7/16 in. The wide and large port heads with staggered valve placement give the 302 H.O. The real question is, what do these factory motors make, and how do they compare to each other?. 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. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. I was building that garbage in 2nd grade. The results of this test didnt really surprise me, except for one thing, reveals Holdener. The best aluminum heads for 302, without a doubt, have an effect on the vehicle's RPM. I installed these on a factory 302 HO in my 94 Mustang. The Boss was topped off with an original aluminum. from United States. This made-in-the-USA head is Edelbrock's value leader. I understand why now they are so much more money! However, in the upper RPM range, the Boss 302 shows a definite, significant advantage over the DZ 302. FORD 5.0L/302 Cylinder Heads. Boss 302 heads are unique.No other heads will work without some changes. Though I rated the overall part as good, the areas that really count are just average. I remember reading about it in some magazine and I saw it on another forum recently. 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. Feb 19, 2016. The connection with metered networks (or connecting to your phones hotspot) appear to deteriorate over time, and causes this error. For Use w/289/302/351 Windsor-Style Engines. This is where you must spend the money. Turbo 300-inch Ford can bang off 10.90s at 120 mph. The Boss 302 had been built using a Windsor 302-cid engine, but then Cleveland heads had been added to the block due to their larger ports and valves. 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. Due to the larger Cleveland-style heads, the Boss 302 weighs somewhat more than the normal 302, tipping the scales at 500 lbs. And like the others mention, it was C.J. 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. Weve got 302 fords with gt40 3 bar heads making over 500 hp. While the DZ 302 had a stronger midrange than the Boss 302, in stock form, the Boss reigns supreme in the higher RPM range. 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. 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. 8:1 compression, TFS Stage 1 hydraulic roller cam, 1 5/8 headers, Summit Stage 1 dual plane intake, Edelbrock 650 AVS carb. Part of the difference in valve lift numbers between the two is the rocker arm ratios used from the factory. [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. D. Hearne is on the money as usual. The Cleveland type heads are used in the 302 heads. The Fora platform includes forum software by XenForo. If weight is a consideration, keep in mind that these iron castings weigh considerably more than the rest of the aluminum heads. Would modifying the heads bring down the value of the heads? 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? Also, the visual aesthetic is pretty plain, and the laptop doesnt have a sleek feel to it. I am building a budget 440 RV motor that should be a monster street tire smoker for under $3000. The BOSS 302's biggest shortcoming is port sizing, which is something Ford has rarely been able to get right. second time I have been disappointed with Edelbrock. If we were going to use these heads on a street engine, we'd disassemble them and spend the extra bucks to add a 30-degree back-cut to the intake and exhaust valves to improve their overall flow. But there is absolutely something else wrong. Batten of Romulus, Mich who did the furnance-blazed heads. I SENT THEM RIGHT BACK. 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.. In 1970 the Boss 302 was a Camaro killer, it could go 0-60 mph in 6.0 seconds. one of the hotrod magazines did an article on the combo back in the 70's. 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. Peak power was good, at 349 hp, and torque is also reasonable. This conversion was well documented and fairly popular when aftermarket heads were not available. 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. 370 HP Dressed Long Block Crate Engines BP3027CTC Crate Engine, Base Long Block, Aluminum Cylinder Heads, Roller Camshaft, 600 cfm Carburetor, Ford, 5.0L/302, Each Part Number: MLL-BP3027CTC Not Yet Reviewed Estimated Ship Date: Today Free Shipping $6,519.00 Add To Cart Compare Wish List