Best heads for the price. The Ford roller rockers use a fulcrum base and a 5/16-inch bolt to attach the rockers to the head. They used the 3 center sections of the heads. 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). However, it also led to a lot of upset Bowtie fans for some reason. Both had dual-plane high-rise intakes and big Holley carbs. Crate Engine, 302 C.I.D. Very limited suppliers of flathead parts always look to speedway for my hotrod items. Enter Fords development of an all-new 351ci engine with poly-angle valve heads and tight-fisted wedge heads destined for a 1970 introduction. Cast from prime A356 T6 aluminum, these "Z" heads from Ford Racing were designed using solid modeling technology. All they had to do was make the piston dome bigger on the 302 to keep the same 11:1 compression ratio.. searching. Cylinder heads are available fully assembled or as bare castings. Due to the larger Cleveland-style heads, the Boss 302 weighs somewhat more than the normal 302, tipping the scales at 500 lbs. Next, we test a low-rpm cam and a high-rpm cam in the same engine to demonstrate the power differences. 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. See the top reviewed local exterior and siding contractors in Hohenthann, Bavaria, Germany on Houzz. 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. instead of 50 oz. The BOSS piston was a unique item, configured to use the 289HP rod with the 302 stroke. Ford Aftermarket. Put on a 351w in a 1979 Tbird. Does anyone remember the six cylinder heads they made for Bruce Sizemore. For a better experience, please enable JavaScript in your browser before proceeding. Edelbrock E-Street cylinder heads are ideal for entry level street performance engines. That means 305 maximum cubic inches. Required fields are marked *. Not too much carb for this engine. When you do that, you can see that the TFS head did substantially better than all the other heads above about 4,400 rpm. The only caveat to all this is that the Twisted Wedge heads do limit valve lift (0.600 inch) and duration on stock pistons due to their repositioned intake valvejust so you know. . The compression ratio is 8. These heads are screaming on the 302 I just built and are great quality. (Image/Jim Smart) Although these are 1969-70 BOSS 302 heads, they []. The biggest difference between the two engines is the cylinder heads.. 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. Aluminum Block Aluminum Heads - Subtract .012? The RHS heads come out of the box with a very nice-looking casting, and back that image up with respectable performance. The supply chain issues are eliminating a lot of choices. Twisted Wedge and Canted valve (TFS and C302b) in aluminum promote even better performance. For Use w/289/302/351 Windsor-Style Engines. Ah now Plummer - it's not a secret if you post it on VMF! 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 BluePrint Engines HP9009: Cylinder Head, Assembled, Aluminum, 60cc Combustion Chamber, Square Port, Ford, 289, 302, 351, Stud Mount, Each Welcome to a new class of high performance cylinder headsBluePrint Muscle Series! Both these motors were factory-rated at the same 290 horsepower, but that number is suspect, says Holdener. 1970 Exhausts have only a. The heads were to big for a 351CLEVELAND. Fords classic 1969-70 BOSS 302 engine was a bold step forward after a miserable season in 1968. 1970 Fastback (to be finished outside as a Boss 302 tribute), thanks for all the responces! 64cc Volume. 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. I think the higher RPM one had larger valvesand ports, right? The cylinder head is an important component of the internal combustion engine in a Ford 302 car. The heads alone are excellent fit and quality. Currently I have a set of 1969 302 d0oe heads, and a set of 1965 289 heads, I heard both of those won't do it without spending a lot of money porting etcI was thinking of gt40 heads. Age Group: adult. 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. "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. Russell; COMP Cams; TCI Auto; FAST; E-Comm Sales: Sales: 888-799-1135 Tech: 800 . If this becomes a bit more subjective by adding in power (and why wouldn't you? The Mustang 5.0L Coyote engine has evolved into the Boss 302, VooDoo 5.2L, and the Predator 5.2L. ---185cc Aluminum Heads for SB Ford --- These aluminum heads are assembled with the perfect match of components for outstanding, trouble-free performance. I was wondering how these heads would work on my 97 5. Also; I had Carroll Shelby/SAAC racing program in several other FORD dealerships . In the 1960s, Ford was an outspoken car company, much as Pontiac Division was within General Motors. Luckily I had the tools to put them back on but this could have been a issue and made them not bolt on heads. 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. Experimental Part . I understand why now they are so much more money! 60 cc Chamber. Like we said, if best power or least price is your only concern, then the decision is easy. Ford had and did a great job with Ford Motorsports programs which we were in . 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. I changed the thermostat so it would dump alittle more gas in her no problems so for. supershifter2 :shocked: :shaking: < :bs: ! So your wrong. We did this to expand the scale to show the differences in power near peak horsepower. The heads are a direct replacement for previous Twisted Wedge heads and work with all Twisted Wedge specific pistons. Our FDC has over 150 racing members and FORD promised us Hubert Platts Drag Mustang after series which disappeared. Max effort class rule stuff runs over $2K. 8:1 compression, TFS Stage 1 hydraulic roller cam, 1 5/8 headers, Summit Stage 1 dual plane intake, Edelbrock 650 AVS carb. All Cleveland style heads including the BOSS has 1.73 to 1 ratio rockers. Looking at the graph, it looks like the DZ 302 actually outperforms the Boss 302 from 3,700 rpm until 5,800rpm. which de-stroked it. Thesecret to a long life stroker is to add wieght to the crank so you can exterally balance @ 28 oz. Im using a fairly mild flat tappet cam, so growing the installed height of the springs by 60 or 70 thousandths woul put both the seat pressure and open pressure weill within specs for a flat tappet cam. 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. Bolts in anywhere a 302 will go with the right headers and pan. One side opted for mild lift and more duration, and the other went for more lift and milder duration. However, way down low, where the big-port Boss 302 motor isnt supposed to work, it made decent low-speed torque. The spark plugs are also positioned well, and I cant foresee any interference with any headers. It used to be listed in the FRRP catalog. Plus, they give you more power behind the wheel and in your wallet! ported and polished heads can also provide good results, but they may require more work to install and tune properly. Cylinder Head. Revised cooling system passageways Siamese bore with drilled coolant crossover holes (Except on M-6010-B302BB ) Increased bulkhead material 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. Better than fighting with iron cylinder heads. The 363 uses FRPP Z2 cylinder heads. In my 70 years of fooling with cars, we always had a formula. 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! Every time I put a bigger carb on it, it ran faster. Well I have a 1977 copy of Pop. Once I pick the heads I was going to find a good cam for daily driving/ performance. Not even close to what I thought I should be getting in a brand new set of heads. But, I just came across this website and happened to ask about B. Sizemor's 6. After idling for a couple of minutes the engine will start smoking horribly. And you'd have to replace the factory two-piece valves which are known to come apart randomly for no reason. Renegade Street. Why would you build a 302. No mention of those holes in the instructions. 030 AND 2 OF THEM WERE. Both engines are solid flat tappet cams, and the Chevy especially responded to changes in the lash. The heads are Cleveland heads. Sign up for a free trial to MotorTrend+ today and start watching every episode of Engine Masters, plus much more! As far as I'm aware you only choice for factory heads in the Boss 302. When I set the carb I get a bouncing vacum needle at idle, Ive been told thats a sign of a sticking valve. I am presently installing a 302 clevor into a 83 mustang GT. 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.. Other than that it was OK. $ 5,595.00 Learn More. Does any 351 Cleveland head fit it? Exhaust - 1.72 inches. This conversion was well documented and fairly popular when aftermarket heads were not available. 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. So, instead, they ran a simple 750cfm Holley carburetor, along with 1-3/4-inch dyno headers. 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. Top Rated Seller Top Rated Seller. 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. 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. This page last updated: February 3, 2022. Great performance didnt notice any quality issues or burred edges when they came in. Edelbrock E-Street cylinder heads are ideal for entry level street performance engines. Not the 2012-13 Coyote DOHC BOSS, but instead the genuine pushrod original from an era when Ford did the unthinkable repeatedlyand won! My build is a 306, 9. 030 shim. Currently I have a set of 1969 302 d0oe heads, and a set of 1965 289 heads, I heard both of those won't do it without spending a lot of money porting etcI was thinking of gt40 heads. The BOSS 302's biggest shortcoming is port sizing, which is something Ford has rarely been able to get right. . Above you see a casting with a D1ZE part number. The holes are just big enough for the spark plug socket, which guides it in perfectly. Edelbrock Performance Cylinder heads are manufactured of A356 aluminum and made in the USA for AMC, Buick, Chevy, Chrysler, Ford, Oldsmobile, & Pontiac engines. I had 90 runs on an original Boss 302 in a 70 Mustang. Ford Performance Cylinder Head X2 Street. These are perfect for the low compression big blocks of the mid to late 70s. 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. 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. Ive built 302/347 engines with stock heads, Roush180/Windsor Jr. , and Trick Flow Twisted Wedge heads. 09 of shims installed so they look good. There was dust and paper bits all over the keyboard and screen!! detroit metro auto parts "302" - craigslist . And then it's gonna be HP you'll make, not a lot of torque. There are plenty of them lying around used and new-old-stock. Index your plugs on these engines. 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. They show to be suitable for the 221-302 Ford Small Block. It's important to note that this was the only head in our test that required its own separate valvetrain. very poorly packaged, opened it and there was no screen protection sheet between screen and keyboard. I am through with their products. 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. 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. Im not sure what has happened to Edelbrock, but their quality control sucks. It was a world beater and symbolic of the end of the classic muscle car era. You can see the marks the intake valves made so you can clearly see the reliefs are not big enough (as in diameter, not depth). These are certainly worthy of attention at this excellent price. 154-3701: SB Ford Boss 302 12pt Head Bolt Kit. Both 1969 and 1970 302 BOSS engines will run great with a properly tuned 750 Holley. Today, the aftermarket lineup of Ford cylinder heads has plenty of castings from which to choose. Plus we used cam dial-in and it was only off a half degree. Have you got the intake? 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! How can you call it racing if you're putting the brakes on before the finish line? Expensive mistake. Street 512 Mopar motor in a Dodge Dart . 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. 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. The Boss 302 takes the Mustang GT's suspension and adds higher-rate coil springs, stiffer bushings, and a larger diameter rear stabilizer bar. Bought these and compared to the other (PC). would love to return this old jalopy back!!!. I did hear somewhere that there was a fellow using the late model chev heads and cutting those up and making a crossflow head for a 300 six..That would not be too hard to check out if a fellow had a 300 six block and some access to some of the late chev heads I think the LS6 heads..It took three of the heads to make one and since they are aluminum that resolves some of the fabrication issues..Is it true well I dunno for sure but it may be worth a looksee to see if it may work.. What I have found out so far, the engine runs. Im sure you had over 400. writing. Im just hoping the new Edelbrock intake that arrived yesterday is better than these. were designed to be 1-for-1 replacements for Boss 351 cylinder heads. Thanks to all who helped us get here. Other Intakes >> Application. Cylinder Head. I personally dont think a prospective buyer should have to learn about this issue by reading reviews. 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. When the vacuum is high, the intake is sucking oil through the valves. 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 features improve an engines efficiency, resulting in more horsepower and torque and improved mileage potential. 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. World contributed the lone cast-iron head to our Ford small-block test. 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 0.480-inch lift B303 hydraulic roller cam, and 9.0:1 compression. Compatible with Chevy Small Block 302/327/350/383/400 SBC 200cc Intake 68cc Angled Plug Aluminum Bare Cylinder Head $238.88 $ 238 . This minor tune-up would really improve the flow curve and add a measurable amount of torque. The Good and Bad of the head bolts on the SBF is that their are only 8 of them. Boss 302s did indeed have 1.73 ratio rockers from the factory. Stroking an engine is not going to reduce your engine rpm. A forum community dedicated to vintage Ford Mustang owners and enthusiasts. [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. The Boss 302 and 351C-4V head casting are the same except for a minor difference in water passages. 1969 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. 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. This new design offers a 25-50 HP increase over current Cobra Jet heads, depending upon displacement and camshaft. The wide and large port heads with staggered valve placement give the 302 H.O. But there is absolutely something else wrong. Your email address will not be published. Is it the 69 or 70 Boss 302 head that's more streetable? So, a big head, lots of camshaft, an aluminum intake, and a Holley four-barrel. Using the native mouse is awkward. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Other than this the heads flow nicely on the street. We tried this formula to see what our basically stock BOSS 302 would do. The results of this test didnt really surprise me, except for one thing, reveals Holdener. 9 intake valves since they bolt on easy with no modification necessary. Part of the difference in valve lift numbers between the two is the rocker arm ratios used from the factory. BluePrint Engines Ford 302 C.I.D. You MUST flycut the valve reliefs on the pistons larger if using stock pistons. Jul 7, 2011 I've an Offy Boss 302 tunnel ram that I'd like to use in a build and was wondering aside from the 4V cast iron heads, which aluminum heads will work with this combo. AFR - Airflow . 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. 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. Ports 2.38" x 1.68" C9ZZ-9424-C. C9ZE-9425-A . Would it mess with the computer really bad. I think Im in love, lol!!. That puts lift over .500 inch .514 according to our calculations, minus the lash, Holdener reveals. It was honestly a guess on my part and the Tech had no additional information or opinion to offer. 1969 Intake - 2.23 inches Exhaust - 1.72 inches. 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. Are there any aftermarket heads for it? To clear up a few questions, the combustion chambers are 60cc, not 64cc. This includes 260, 289, 302, Boss 302, 351W and related variants. 18 Ft/Lbs - Aluminum Heads. My first work Dell was super slow and sluggish, so I was sent a new one. These aluminum heads can be directly installed on all small-block Fords: 289, 302, 351W and, with some modifications, even 351C engine blocks. 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. Sold individually. It would make a nice high rpm engine that was pretty soft on the lower end where you spend the most time. But thanks to all of your responses this is not for me! 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. 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. 45 degree spark plug wires work great with these heads. either way, Im so thrilled with this product that im picking up the 205s for a fast engine build. So howd they stack up? Flat cylinder heads have large water capacity and excellent breathing characteristics. 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. 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. In 1970 the Boss 302 was a Camaro killer, it could go 0-60 mph in 6.0 seconds. Pontiac was the outlaw division. Ford's legendary racebred Boss 302 engine remains one of the most significant high-performance power plants in the company's history. Suddenly these heads arent so appealing. Jeff Speegle Come see us @ ConcoursMustang.com MCA Shelby Judge, SAAC & Team Shelby Judge (in no particular order . If I were to shop for a personal laptop, Id never consider this laptop based purely on what it looks like. It was 351C heads, 3 of them, cut up into 6 pieces, then furnanced blazed. 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.