I believe C.J. 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. View Details. Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4in. Assembled. There is no flat spot and these engines will pull from 2000 against any rival including a Windsor. Assembled. Boss 302 -- The Ford V-8 Engine Workshop - Elaine Walker We started FORD Drag Club at Horn-Williams Ford in Dallas,Tx. Crate Engine, 302 C.I.D. The winner in this evaluation is almost always the least-expensive head just because of the way the math formula works. I was building that garbage in 2nd grade. They used the 3 center sections of the heads. Bob Perkins(WI) located it and restored it to original shape and build special plexiglass trailer for it to display. These are certainly worthy of attention at this excellent price. We should stress that during testing we optimized each set of heads for timing and jetting and then ran the engine for two near identical runs, which were then averaged to come up with the final power numbers. 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. Ive had several other brands, but HP has been the best. 69 Boss 302 Mustang & Cougar . Intake - 2.23 inches Exhaust - 1.72 inches. Today's small-block Ford street engine builder has it easy. That made for an incredibly close series of tests, which proved that regardless of how you get your displacement, similar displacement engines will make similar power and respond similarly to modifications. 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. very poorly packaged, opened it and there was no screen protection sheet between screen and keyboard. It used to be listed in the FRRP catalog. extreme amount of burrs left all around the rocker shaft mounting pads. As I recall from articles way back, this is an expensive process. I was wondering how these heads would work on my 97 5. Buy It Now +C $186.98 shipping estimate. What? One thing I found particularly awesome about these heads is the spark plug holes and threads. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. All Rights Reserved. Install the gaskets with the raised seal towards the head and it will fit the ports much better. Max effort class rule stuff runs over $2K. 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. Cheaper than some rebuilds. Is it the 69 or 70 Boss 302 head that's more streetable? VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Better compression then stock, better breathing then stock. Im trying to leave this pretty much as is, until I get a few good drives in. Siding Contractors & Companies in Hohenthann - Houzz DART . Experimental Boss 302 style heads . Great top end with these heads also. My build is a 306, 9. 040 roller short block A little lope at idle but it pulls everywhere in the rpm range. 302/351 X2 Head. JavaScript is disabled. FORD 5.0L/302 Crate Engines - Aluminum Crate Engine Cylinder Head Revised cooling system passageways Siamese bore with drilled coolant crossover holes (Except on M-6010-B302BB ) Increased bulkhead material The body is lowered 11 mm (0.433 in) up front and just 1 mm (0.039 in) in the rear to give it a more raked stance designed to recall the original. Combining with an iron block and aluminum heads, the 4.0L SOHC V6, made a substantial amount of more power than its predecessor, producing 210 horsepower at 5,250 RPM and 240 lb/ft of torque at 3,250 RPM. The real question is, what do these factory motors make, and how do they compare to each other?. 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. I have certificate for it. The Edelbrock 351C head shows a controlled "swirl ramp" that comes on lightly at 100 RPMs starting at .450" lift and increases steadily to 2000 RPMs at .600" lift. Boss 302 blocks are used all the time for Windsor headed performance buildups! 2.02/1.60 in Valves. PRO1 170 Ford Tech Sheet - H30. If you are looking for a set of World aluminum heads, you can find them at Bill Mitchell Products. 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Ford Boss 302 Engine Build - Build A Better Boss - Tech - MotorTrend This makes it easy to torque and lower cost for better aftermaket bolts and studs. 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. [] Heres a close up of the head Marvin is using on our 351C build. The DZ 302 used a 1.5:0 ratio, while the Boss 302 head used a larger 1.72:1 ratio. These features improve an engines efficiency, resulting in more horsepower and torque and improved mileage potential. 5.0L/302 - FORD - Cylinder Heads - TrickFlow.com SB Ford Aluminum - Bill Mitchell Products 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. They'll work but have you got the Boss heads? Boss 302s did indeed have 1.73 ratio rockers from the factory. 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. Reworking Cleveland heads I think would require reducing the size of some of the water passages and I unsure of the block clearance . Free Shipping on Orders Over $99 at Summit Racing Like with standard 4V heads, you would have to machine the tops of the heads to accept screw-in, adjustable rocker studs. it boots up ok but not as fast as my other i5 laptop. I would suggest pulling the vavles and wiping everything down. 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 . edelbrocks were my first finned aluminum heads for a flathead25 years agoand they were o. k. for a 239 or a 255, due to small combustion chambers. Throw a blue oval flag over the RHS, Edelbrock, and Ford heads, and the performance is very similar. When I set the carb I get a bouncing vacum needle at idle, Ive been told thats a sign of a sticking valve. Having a hard time finding Boss 302 Heads online? If we've muddied the waters a bit, it's only the result delivering more information on the way to a decision. I SENT THEM RIGHT BACK. Fords classic 1969-70 BOSS 302 engine was a bold step forward after a miserable season in 1968. Cleveland heads on 302 Roller Block | Ford Mustang Forums In 1970 the Boss 302 was a Camaro killer, it could go 0-60 mph in 6.0 seconds. However, Ford already had that architecture in its lineup, while Chevrolet did not. I remember reading about it in some magazine and I saw it on another forum recently. Ford and Mustang Intake manifold 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. Remember this correction adjustment is approximate and is only meant to get you close for the initial start up of the engine. 125 of silicone is likely to blow out. 15 Best Cylinder Heads For Ford 302 (2023 Updated) The BOSS 302 heads used some of the biggest valves in the industry. http://fordsix.com/forum/viewtopic.php?t=33048, 1971 Ford Maverick - Budget 10-Second Turbocharged Maverick Coupe - Car Craft Magazine. There are plenty of them lying around used and new-old-stock. instead of 50 oz. Age Group: adult. Some additional 302 factory valve sizes: 69 Boss 302 intake 2.23 / exhaust 1.71. That's what the TFS Twisted Wedge heads did here. The compression ratio is 8. 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. Ford 300 six cylinder custom head | Hot Rod Forum But as we've seen before, the heads that produce the best peak power also tend to do so throughout the entire rpm band. E-Street cylinder heads feature as-cast ports and are designed for entry-level street performance applications operating in the idle-to-5500 rpm range. Come join the discussion about restoration, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more! Comparing the cylinder heads on paper, using data collected by Holdener for a previous article, the Boss heads clearly come out ahead. 010 runout and wouldnt come out of the head without a lot of force (we never took it out). Renegade Street. Back in the day, there was all kinds of speculation that they made more than 400 horsepower. one of the hotrod magazines did an article on the combo back in the 70's. The Mustang 5.0L Coyote engine has evolved into the Boss 302, VooDoo 5.2L, and the Predator 5.2L. The biggest difference between the two engines is the cylinder heads.. Great velocity with these heads. Valve stem heights all the same, decent springs, work fine for my rolller cam, good fit and finish. My fault for not setting the intake on the engine to check my end gaps. The Edelbrock Flathead Cylinder Head is made of A356 aluminum T-6 tempered cylinder head. second time I have been disappointed with Edelbrock. The Fora platform includes forum software by XenForo. I would guess Im somewhere around 375HP @ the flywheel in this build. 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. So the induction system is kind of a toss-up. You have to rev it to the moon to really make any power. The heads are awesome and fit great! 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). Inline and < 15* valve angle such as World Products Man O' War 10* heads promote very good performance. It was 351C heads, 3 of them, cut up into 6 pieces, then furnanced blazed. Are there any aftermarket heads for it? Our FDC has over 150 racing members and FORD promised us Hubert Platts Drag Mustang after series which disappeared. I didnt and I think some of that lube got burned on the valve seat and causing it to not seal but, will have to open it up to find that out. The rocker studs are 7/16, not 3/8. Hardcore Boss 302 Restoration Tech! - MotorTrend Im trying to build my 289 on a budget and saw a pair of Boss 302 heads online for $400 and thought why not. I think the higher RPM one had larger valvesand ports, right? can I send the stud kit back? 64cc Volume. The heads offered an excellent midrange power curve, behind only the Twisted Wedge casting between 4,000 and 5,500 rpm. How can you call it racing if you're putting the brakes on before the finish line? my signature linesnot really directed at anyone in particular.. Put on a 351w in a 1979 Tbird. They pull much harder through the midrange than the 351W heads they replaced on my 302 Ford. D1ZE service block and aluminum rods. Not even close to what I thought I should be getting in a brand new set of heads. Ford Performance Cylinder Head X2 Street. 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. Russell; COMP Cams; TCI Auto; FAST; E-Comm Sales: Sales: 888-799-1135 Tech: 800 . I never did own a Boss 302, but I was around them when they were new.I have had lots of 351C. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. As the 1968 Tunnel Port engine turned into a disaster, someone at Ford Engine Engineering got the idea to put a set of Cleveland heads on a Tunnel Port block and thus was the beginning of what would become the BOSS 302 engine. The cylinder head is bolted to the engine block and sits above the pistons. . One side opted for mild lift and more duration, and the other went for more lift and milder duration. This page last updated: February 3, 2022. Autozone has a great price on these heads. 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. 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! Ford Racing teamed up with Jon Kaase to redesign their 429 Cobra Jet cylinder heads, and the results are these Super Cobra Jet heads. detroit metro auto parts "302" - craigslist High-Quality Details With the Edelbrock part #7129 Performer RPM E-Boss 302 intake manifold, you can build a mock Boss engine by using a standard 302 block and Edelbrock Performer RPM Cleveland cylinder heads #61699. reading. 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 store will not work correctly in the case when cookies are disabled. I have used them for over 35 years and never seen something like this. Future availability is unknown. the engine was called a "boss 289" not a clevor, a clevor was a 351W with 351C heads and a custom intake. 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. Small Block Ford. saw a pair of Boss 302 heads online for $400 and thought why not. 8l F250hd efi roller engine? I understand why now they are so much more money! Other than that it was OK. We got our answer. I am through with their products. Edelbrock E-Street cylinder heads are just the ticket. The head bolts used on a Boss 302 were a flanged-style head bolt. Currently working on a 1970 Mach 1 project. It collects next to nothing. These heads use the same valves, valve springs, retainers, and 7/16 in. Both engines are solid flat tappet cams, and the Chevy especially responded to changes in the lash. 3/1 . They are rugged and ribbed internally and externally for more strength. A guy near here used the advice on the link below, starting with a 67 289 2V engine. Valves 2.02 / 1.55" . Pair. SBF Pro1 20 170cc Heads - Dart Machinery Ford has always been a car company that dared to go where no automaker had ever gone before. BluePrint Engines stand in front of the class, offering both performance and cost-conscious enthusiasts a powerful alternativeMuscle Series cylinder heads. Build a Better Boss (302 Ford, That Is) - OnAllCylinders Alum. Its not a good time to be building a performance engine. Heads are sold individually. sbf 302 aluminum cylinder heads. Very limited suppliers of flathead parts always look to speedway for my hotrod items. Ford's legendary racebred Boss 302 engine remains one of the most significant high-performance power plants in the company's history. Small Block Ford. Had to mill out some (- one hour with a Dremel), to get my stock distributor clamp to fit. Its main function is to seal the combustion chamber and provide a surface for the intake and exhaust valves. 2023 Power Automedia. 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. Because the 302 Tunnel Port called for high revs in the 9,000 rpm range to make real power, racers scattered these engines all over racetracks across the country and left feeling defeated. 035 (which I am using). Whenever youre running a flat tappet cam, always use a zinc additive, Building Classic Ford 351 Cleveland Power. The Boss 302 takes the Mustang GT's suspension and adds higher-rate coil springs, stiffer bushings, and a larger diameter rear stabilizer bar. The drag strip in my area doesn't have any classes. So, a big head, lots of camshaft, an aluminum intake, and a Holley four-barrel. The product is a great entry level/cheap head though so 5 stars! but thesell work on a large engine and flow, too. BluePrint Engines Ford 302 C.I.D. Im trying to build my 289 on a budget and saw a pair of Boss 302 heads online for $400 and thought why not. Im looking to build an engine that produces 300ish hp. I think it was Bruce Sizemore that ran an H/MP Maverick that held the class record for a while during the 70s. However, it also led to a lot of upset Bowtie fans for some reason. This engine was built in the 80s by someone with way to much money. Boss 302 Mustang - Wikipedia Also; I had Carroll Shelby/SAAC racing program in several other FORD dealerships . Typical rebuild, headers, Competition solid lifter cam, 1.73 Crane roller rockers. We got more than 450 HP on Fords dyno when we blew right rear tire and it took out Ford training board. I am building a budget 440 RV motor that should be a monster street tire smoker for under $3000. By doing the heads himself (he'd never tried it before), and using a 289HP air cleaner, 600 cfm carb, Edelbrock Performer RPM intake, stock distributor tuned to BOSS 302 specs, and a C9OZ-6250-C hydraulic cam, turned 323.5 hp @5300 rpm. Batten of Romulus, Mich who did the furnance-blazed heads. Evidently youre research people are either misinformed, or just dont really care about building anything ford. 6 Budget Small-Block Ford Cylinder Heads That Work - MotorTrend 1970 - D0ZE-6090-A or B. FORD MUSTANG 302 CYLINDER HEADS Pre-Owned $177.50 classicautoresto (4,195) 100% or Best Offer +$199.05 shipping Sponsored ARP 154-4206 Black Ford New Boss 302 w/351C heads 12pt hsk In Stock Ready to Ship Best Deals Fast Shipping Brand New $250.99 partshawk (68,956) 99% List price: $367.99 32% off Buy It Now Free 4 day shipping Sponsored How big are stock 302 valves? | Mustang Forums at StangNet 4V. 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). I figured the Boss would make peak power. 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. GT40 heads use 1.84 intake / 1.54 exhaust. This one appeared great at first use and for a couple of months. It would make a nice high rpm engine that was pretty soft on the lower end where you spend the most time. Edelbrock E-Street cylinder heads are just the ticket. And really, its a difference in the philosophy behind these two motors. No stick hole up top. This is my first engine build, let me know if Im doing it all wrong. It ran a regular head that was tweaked (either before the slicing or class requirement). I'd have to look through some old books, but I think it took 3 heads to get 1, although it may have been 2. Parts made from tooling for the cancelled 1971 BOSS 302 were used for service. Battle Of The 1969 302-Cube Powerhouses: BOSS 302 Vs. DZ 302 - EngineLabs We tried this formula to see what our basically stock BOSS 302 would do. LOOKS AND PERFORMED GREAT. You would need a Boss 302 manifold for the intake. Great article is there a video available ? 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 302's fuelie heads. I first installed an oil trap in the PVC thinking something went wrong with the piston rings. The recommended spark plug for your typical application is the Champion 792 plug, gapped at. 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. Other Intakes >> Application. Come join the discussion about restoration, modifications, NOS parts, troubleshooting, VIN codes, and more! The gaskets do not indicate which side goes out so be careful and dont do what I did and install them with the raised seal facing the intake side. 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. If weight is a consideration, keep in mind that these iron castings weigh considerably more than the rest of the aluminum heads. Generator stud kit for 1938-48; use #8506. Edelbrock E-Street cylinder heads are ideal for entry level street performance engines. We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. The term refurbished was definitely stretched here: the screws are different colors from the black casing, the bottom rubber footers are looking like they have decayed so that the laptop wobbles, the side has a port that was left wide open with a broken/cracked piece and then when you try to open it, the screen side sticks to the keyboard side like it has a gummy residue of some sort on it. 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. Gurney Eagle : Gurney Eagle race heads : Application. The runners are as cast and a bit rough. The best aluminum heads for 302, without a doubt, have an effect on the vehicle's RPM. I am presently installing a 302 clevor into a 83 mustang GT. 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. That was a surprise.. Because the BOSS 302s heads sported monster-sized intake ports, these engines had a high-revving demeanor with peak torque and horsepower coming in around 7,000 rpm instead of the Tunnel Ports outrageous nine grand. Aluminum. 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. Even the stock cam should peek higher than 5500 rpm. I called AFR about the problem and their only suggestion is to install a crankcase vacuum pump. There was also drill flash from the machining of the bores for the valve guides and spark plugs. That puts lift over .500 inch .514 according to our calculations, minus the lash, Holdener reveals. The heads are Cleveland heads. These features improve an engines efficiency, resulting in more horsepower and torque and improved mileage potential. These are perfect for a street build and the price is outstanding!!. If ultimate power is not the most important point, then you could easily choose any of these heads and make a good decision. Is the Ford 302 a Good Engine? - VehicleHistory Fords incredible 1969-70 Trans Am BOSS 302. We evaluated each head on the flow bench, average overall power, and we calculated average horsepower-per-dollar. Find Parts and Accessories Boss 302 aluminum heads KEYWORD and get Free Shipping on Orders Over $99 at Summit Racing! 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. Fits on Dodge ramcharger, monaco, w100 series, sierra, pioneer, d300 pickup, d100 series, custom. The 4-bolt caps can be seen here. He used a correct Duntov camshaft and set the lash a little tighter than the original spec, at .020-inch. Here you can see exactly where each engine outshined the other, and by how much. THE NEXT ISSUE IS THE RECOMMENDED INTAKE GASKET FEL-PRO 1262. Ford Performance "Z-Head" Assembled Aluminum Cylinder Head Fits 302/351W Hack said: The size of 302 valves has varied a little in some performance versions over the years. 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 . . from United States. Ford Performance 289/302/351W Aluminum Cylinder Heads - JEGS For the 1968 Trans Am season, Ford took the 302 cubic inch Tunnel Port out there in search of victory. Nevertheless, for a street engine, this head delivers excellent midrange power. 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. For a better experience, please enable JavaScript in your browser before proceeding.