boss 302 aluminum heads boss 302 aluminum heads

They'll work but have you got the Boss heads? Cloyes gears to replace the factory chain set-up and hand-built his own Accel BEI distributor by machining the housing ut of aluminum billet. . Bob Perkins(WI) located it and restored it to original shape and build special plexiglass trailer for it to display. After idling for a couple of minutes the engine will start smoking horribly. 02 intake/1. Camshafts were quite similar to the 289 HP. which de-stroked it. JavaScript is disabled. All Cleveland style heads including the BOSS has 1.73 to 1 ratio rockers. . Have a 70 351 4v stored 25 yrs 50 k miles complete minus carb dist has manifolds 1800. never lube the seal lip ? Are you looking for a set of entry-level street performance heads for your modern street rod, musclecar, or truck? from United States. The BOSS 302 Registry is not affiliated with the Ford Motor Company. 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. Cylinder heads casting ID decode for 260 289 302 351 390 406 427 428 429 460FE Boss Shelby. Where in the world did you come up with the "347s are not reliable"?. That's what the TFS Twisted Wedge heads did here. 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. Boss 302 is a Windsor engine; uses Windsor cam lobe profile & 1.6 Windsor rockers. The BOSS 302's biggest shortcoming is port sizing, which is something Ford has rarely been able to get right. I would guess Im somewhere around 375HP @ the flywheel in this build. Search 6 Hohenthann siding contractors & companies to find the best exterior and siding contractor for your project. So, instead, they ran a simple 750cfm Holley carburetor, along with 1-3/4-inch dyno headers. The cam featured 290 degrees duration and .477 in (12.1 mm) of lift. Swirl Remarks CHW's Modified Boss 302 head shows the elimination of a swirl effect at lifts below .600 inches. 1970 - D0ZE-6090-A or B. 09 of shims installed so they look good. I changed the thermostat so it would dump alittle more gas in her no problems so for. Brand New. The real question is, what do these factory motors make, and how do they compare to each other?. When the vacuum is high, the intake is sucking oil through the valves. The less you know the more you need vacuum secondarys. 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 ! Fords incredible 1969-70 Trans Am BOSS 302. Ford's legendary racebred Boss 302 engine remains one of the most significant high-performance power plants in the company's history. If I were to shop for a personal laptop, Id never consider this laptop based purely on what it looks like. Today's small-block Ford street engine builder has it easy. 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. The heads are awesome and fit great! 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! I called AFR about the problem and their only suggestion is to install a crankcase vacuum pump. GT40 heads use 1.84 intake / 1.54 exhaust. E7 heads use 1.78 / 1.48 just like the 60s stuff. But thanks to all of your responses this is not for me! 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. Small Block Ford. There was a guy named CJ Batten who would cut up 3 boss 302 heads and put them on a 300 IL6.The one I remember was on in a rail type dragster. Great top end with these heads also. The heads alone are excellent fit and quality. . Gurney Eagle : Gurney Eagle race heads : Application. Exhausts have only a. They used the 3 center sections of the heads. 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. Not sure about the 5089. 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. Both these motors were factory-rated at the same 290 horsepower, but that number is suspect, says Holdener. 98 sold The .10 difference in bore spacing( but the bolt pattern is the same square four as the smallblock) makes me think 3. 58 cc Chamber. These elements made the BOSS 302 a unique mill compared to what the rest of Detroit had to offer at the time. Opens in a new window or tab. I am building a budget 440 RV motor that should be a monster street tire smoker for under $3000. SB Ford WP Man O'War iron block/Man O'War aluminum head Head Bolt Kit. Flashing in ports was unacceptable. sbf 302 aluminum cylinder heads. Index your plugs on these engines. 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! 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. it boots up ok but not as fast as my other i5 laptop. The heads are a direct replacement for previous Twisted Wedge heads and work with all Twisted Wedge specific pistons. 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. Valves 2.02 / 1.55" . installed the heads on a 1978 460 bored out .060 over went from 500 hp to 551 hp @4900 rpm on a dyno 8/9/19. The connection with metered networks (or connecting to your phones hotspot) appear to deteriorate over time, and causes this error. They feature revised valve angles and locations to reduce cylinder wall shrouding and improve flow, along with redesigned combustion chambers to accommodate the more centrally located valves. 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. The head bolts used on a Boss 302 were a flanged-style head bolt. Thx. Its not a good time to be building a performance engine. But when I received them the box was almost completely destroyed and when I took them out of the box 2 valve springs and retainers were off the stud and loose in the box. . As with our small-block Chevy head test, we will evaluate each of these small-block Ford cylinder heads using several different categories in addition to peak torque and horsepower. While the tunnel port wasnt a complete success, thats how the Boss heads came to be. D. Hearne is on the money as usual. But as we've seen before, the heads that produce the best peak power also tend to do so throughout the entire rpm band. If weight is a consideration, keep in mind that these iron castings weigh considerably more than the rest of the aluminum heads. http://fordsix.com/forum/viewtopic.php?t=33048, 1971 Ford Maverick - Budget 10-Second Turbocharged Maverick Coupe - Car Craft Magazine. We will admit to you our results on the dyno were disappointing304 horsepower and 288 lb.-ft. of torque. I first installed an oil trap in the PVC thinking something went wrong with the piston rings. Neither was really that streetable but of the two the 70 had the smaller valves whick helped a little with the low rpm feel. searching. Even the stock cam should peek higher than 5500 rpm. DONT USE ANYTHING ELSE OR IT WILL LEAK. This new design offers a 25-50 HP increase over current Cobra Jet heads, depending upon displacement and camshaft. However, it also led to a lot of upset Bowtie fans for some reason. When the SCCA started the Trans-Am series. Don't know if it's still good. If you used windsor heads its not a BOSS. These heads are screaming on the 302 I just built and are great quality. No votes so far! See all 22 photos. reach with flat gasket seat. These are certainly worthy of attention at this excellent price. I remember reading about it in some magazine and I saw it on another forum recently. That means 305 maximum cubic inches. Edelbrock E-Street cylinder heads are just the ticket. For those who consider swirl a detriment to producing power this is a positive thing. But the springs they come with are for a hydraulic roller cam. Im sorry guys but you somehow missed something there are boss 302s out there cranking out way more than what you guys are claiming. These lightweight aluminum heads bolt up to your small block Ford and feature 190cc intake/60cc exhaust runners, 60cc combustion chambers, and 2. The supply chain issues are eliminating a lot of choices. 1.90/1.60 in Valves. Reportedly designed by a drag racer and tinkerer named Sherman Sligh, the Boss 300 is engine design gone mad. 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. Ford New Boss 302 w/351C HDS Hex Head Stud Kit. 18 Ft/Lbs - Aluminum Heads. For high-performance's street and competition, our dual-plane design makes outstanding power from 1500 to 6500 rpm. Any advice would be greatly appreciated. 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. I would suggest pulling the vavles and wiping everything down. Both 1969 and 1970 302 BOSS engines will run great with a properly tuned 750 Holley. Maximum output for less money!. Parts made from tooling for the cancelled 1971 BOSS 302 were used for service. And, he decided to make that happen. Cylinder Head. but thesell work on a large engine and flow, too. For the testing, Holdener put together a non-numbers matching replica of the DZ 302. 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. 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. It used to be listed in the FRRP catalog. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Every time I put a bigger carb on it, it ran faster. That was a surprise.. All they had to do was make the piston dome bigger on the 302 to keep the same 11:1 compression ratio.. Having a hard time finding Boss 302 Heads online? ), then the second-least-expensive headsthe Edelbrock E-Street headsreally begin to stand out. unfortunately I missed the return window due to illness. Batten cyl heads was instrumental in developing the high port exhaust for the Dyno Dons and Bob G's and Jack Roushes. A stock 1970 Boss 302-spec solid, flat-tappet cam was used and offered a tad over .500-inch lift and 228 degrees of duration at 0.050. Some of the guys were running ford 300 six cylinders with good success. Aluminum. I was going to have my reconnecting rods reconditioned with 5/16 arp bolts. They will outperform many of the average aluminum heads. one of the hotrod magazines did an article on the combo back in the 70's. 2023 Power Automedia. That may or may not make your ultimate choice any easier, but if so, you can thank us later. I passed over a different set of heads at the recommendation of my machinist. 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. They are very capable iron heads. The F code 302-2V was made from 68-73. Production casting part numbers: 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! We will safeguard your e-mail and only send content you request. The RHS headsproduced the next-closest average horsepower and torque, with the Edelbrock and Ford heads very close behind. crank, offset-grinding it to a smaller crankpin diam. 030 shim. Boss 302s did indeed have 1.73 ratio rockers from the factory. Ford Performance Cylinder Head X2 Street. 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.. I think that a race head is available through someone that is all aluminum. To clear up a few questions, the combustion chambers are 60cc, not 64cc. Like we said, if best power or least price is your only concern, then the decision is easy. Aluminum Block Aluminum Heads - Subtract .012? edelbrock. Condition does not matter! The Duntov cam that GM used in the DZ 302 had over 250 degrees of duration at .050 [inch]! Holdener explains. 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. The 363 uses FRPP Z2 cylinder heads. For use only with Special heads . NOS 1969 1970 Mustang Boss 302 speedometer. OK, you can do pretty well on a budget. The Fora platform includes forum software by XenForo. Also, the visual aesthetic is pretty plain, and the laptop doesnt have a sleek feel to it. Help keep from being nose heavy. As far as I'm aware you only choice for factory heads in the Boss 302. Works with most standard components. 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. Will these heads work well?. Best heads for the price. What? 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. Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4 reach with flat gasket seat. 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. Today, the aftermarket lineup of Ford cylinder heads has plenty of castings from which to choose. 1.73:1 rockers, 522 lift 292 duration nets 420 HP at 6300. 302 (may have been used on late 68 model year) 4V . Comparing the cylinder heads on paper, using data collected by Holdener for a previous article, the Boss heads clearly come out ahead. Junk ass Chevrolet stroker engines.puleeeeeze. The darned thing was rabid dog fast. 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. These are perfect for a street build and the price is outstanding!!. Very limited suppliers of flathead parts always look to speedway for my hotrod items. There are many different types of cylinder heads for Ford 302 engines, so it is difficult to make a definitive conclusion about them. No more dyno there. I HAD TO CHANGE OUT THE SPRINGS FOR ONES WITH MORE PRESSURE DUE TO VALVE FLOAT AND I AM ONLY RUNNING AN E303 CAM. My first ever computer was an HP Pavilion PC, and theyve always been my favorite brand since then. They pull much harder through the midrange than the 351W heads they replaced on my 302 Ford. Street Cruiser Cylinder Head. AFR - Airflow . Compatible with Chevy Small Block 302/327/350/383/400 SBC 200cc Intake 68cc Angled Plug Aluminum Bare Cylinder Head $238.88 $ 238 . Other Intakes >> Application. $ 5,595.00 Learn More. So get comfortable, slip on your Ford-colored glasses, and hang on. Aluminum heads are affordable, lighter and will make more power. Needless to say they began to really spank everybody and by the end of the season the six cylinders were out ruled. This includes 260, 289, 302, Boss 302, 351W and related variants. I had 90 runs on an original Boss 302 in a 70 Mustang. It would make a nice high rpm engine that was pretty soft on the lower end where you spend the most time. Hate to tell you this but a BOSS 302 has Cleveland type heads. However, way down low, where the big-port Boss 302 motor isnt supposed to work, it made decent low-speed torque. The E-street came in second in peak horsepower and a very close third in average horsepower and torque. It's important to note that this was the only head in our test that required its own separate valvetrain. supershifter2 :shocked: :shaking: < :bs: ! Can you further help me with where to buy this? 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. The heads also required custom-length Comp Cams pushrods to compensate for the relocated valves. And the reality is, they did, in modified trim the way they were raced in the Trans-Am series. Chevy used higher compression and lots of camshaft, combined with mild cylinder heads. 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 The Boss used a mild camshaft, mild compression, and lots of head flow, Holdener says. You MUST flycut the valve reliefs on the pistons larger if using stock pistons. it still has the vista 7 sticker on the palm rest area. 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. 188cc Intake/63cc Exhaust Port Volume. How can you call it racing if you're putting the brakes on before the finish line? 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. I also figured that the DZ 302s smaller heads, with better port velocity and more compression, would make more peak torque. The GT-40 cylinder head was produced in cast iron and aluminum, available from Ford Motorsport SVO and Ford Racing. So howd they stack up? Though that's significant, this is only reflective of a single point in the curve; it is more important to evaluate the entire length of this horsepower graph. Not true! You might even be able to get some rejects since you'd be cutting them up and remaching anyway. . 20 Best Cycling Shorts For Long Distance (2023 Updated), 20 Best Cylinder Lock For Storage Unit (2023 Updated), 20 Best Treats For Guinea Pigs (2023 Updated), 20 Best Treats For Goldendoodle Puppy (2023 Updated), 20 Best Treats For Golden Retrievers (2023 Updated), 20 Best Treats For German Shepherd (2023 Updated), 1953 Ford Customline 8 Cylinders 3.9L 2BL. Why would you build a 302. 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. THE NEXT ISSUE IS THE RECOMMENDED INTAKE GASKET FEL-PRO 1262. 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. (BOSS) If this becomes a bit more subjective by adding in power (and why wouldn't you? 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. on a brand new set of heads. 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 . We had a grad student at UMR custom design his own crossflow head for that engine and the entire thing was CNC'd from one piece of aluminum. The TFS heads appeared to be the big dog in the room when it came time for testing. Ford's original Boss 302 engine was only produced for two years (1969 and 1970), but it was so cool it's understandable why the little V-8 has gained such an . ---185cc Aluminum Heads for SB Ford --- Ford had and did a great job with Ford Motorsports programs which we were in . writing. Depends on material old school rubber gets lube, the Polytetrafluoroethylene rubber gos on dry. Im just hoping the new Edelbrock intake that arrived yesterday is better than these. The product is a great entry level/cheap head though so 5 stars! 010 runout and wouldnt come out of the head without a lot of force (we never took it out). 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 was building that garbage in 2nd grade. Sizemore, formerly of Preperation H fame, did considerable valvetrain developement and terrorized the former checvvy stronghold of I and J/Gas. Fits on Dodge ramcharger, monaco, w100 series, sierra, pioneer, d300 pickup, d100 series, custom. And torque is what gets the car moving from a stop, pushing you back in the seat. That puts lift over .500 inch .514 according to our calculations, minus the lash, Holdener reveals. 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. 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. Edelbrock E-Street cylinder heads are just the ticket. The finishing order for peak torque realigned slightly, with TFS out front, RHS coming in a strong second, and Edelbrock and Ford tied for third. Cylinder heads are available fully assembled or as bare castings. Tech-Sheet. Inline and < 15* valve angle such as World Products Man O' War 10* heads promote very good performance. 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. pulled heads out of box, one head was in very nice shape, ready for service. A stock Boss head will support way over 500 horsepower, where the Chevy will struggle at 400 horsepower. Better compression then stock, better breathing then stock. If you're drag racing in a class where the weight of the car divided by the cubic inches determines what class you run in, it may be advantageous to drop the displacement a little if it will allow you to get into the faster side of a slower class. The Edelbrock E-Street cylinder heads offer American made quality and affordable performance. 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). For a better experience, please enable JavaScript in your browser before proceeding. The compression ratio increase is approximately 3/10 of a percent with each 1/8 stroke. Autozone has a great price on these heads. (Image/Jim Smart) Although these are 1969-70 BOSS 302 heads, they []. Roush? I think it was based on the Cleveland design. The intake ports flow 382 cfm at .750-inch of lift. We'd love to test 'em all, but we decided to line up as many performance small-block Windsor Ford heads as we could find, as long as they were available complete for less than $1,350 for the pair. Its all a win,win. That tradition dates back to the companys founding in 1903. the second head had not been full deburred from the milling process. Ford 302 351C Cleveland 220cc 64cc Hydraulic Flat Assembled Cylinder Heads AT RACING WORLD, 5 Million Orders Shipped Worldwide Brand New $1,475.00 Seller: atracingworld-usa (83,202) 97.7% Buy It Now Free shipping 52 watchers Sponsored Ford 351 Cleveland 4V 254cc 64cc Cast Iron Bare Cylinder Head Brand New 1 product rating $587.80 I purchased these because I needed some better than stock, but not full out race heads. 045. ported and polished heads can also provide good results, but they may require more work to install and tune properly. This particular evaluation only works, however, if lowest cost is the highest priority. Great article is there a video available ? No drilling is required since it appears they updated the manufacturing process to eliminate this need. For a better experience, please enable JavaScript in your browser before proceeding. 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? JavaScript is disabled. D1ZE service block and aluminum rods. Actually, everything about these heads helps the little 302. Im sure you had over 400. What I have found out so far, the engine runs. . What cam specs and static CR? Im not sure what has happened to Edelbrock, but their quality control sucks. Enzo Ferrari, and others, were handed their backsides. With such great success under its seat belt, Ford decided to dabble with the 289 and stroked 302 to see what could be done to further its performance image. 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. Henry Ford II wasnt going to have it any other way. World contributed the lone cast-iron head to our Ford small-block test. No stick hole up top. Edlebrock is one of the few companies making great performance parts for small block Fords. Both companies decided to develop a 302 combination via the previously mentioned four-inch bore and three-inch stroke. 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. Its main function is to seal the combustion chamber and provide a surface for the intake and exhaust valves. 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. And you'd have to replace the factory two-piece valves which are known to come apart randomly for no reason. Remember this correction adjustment is approximate and is only meant to get you close for the initial start up of the engine. 1.90/1.60 in Valves. A big head and lots of airflow means lots of power. 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. 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. If you are looking for a set of World aluminum heads, you can find them at Bill Mitchell Products. 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. Both engines are solid flat tappet cams, and the Chevy especially responded to changes in the lash. 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). Any who, this is a work laptop, and it started out pretty fast, but over time, it eventually slowed down. This is where you must spend the money. What I got was good, but the quality control person should not have let these go out the way they are. Buy It Now +C $186.98 shipping estimate. Fits factory 1979 - 1995 Mustang oil pan with custom oil pickup tube, part number: M-6622-BOSS302 NASCAR inspired front oil feed on both lifter galleys. Cleveland's Crown Jewel. The 68 F code had 10:1 compression and made 210 bhp. This provided more room for larger valves instead of the standard side-by-side arrangement. Nevertheless, for a street engine, this head delivers excellent midrange power. 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. and if you want to use a high-lift cam or supercharger; thats no problem, either. The Tech was nonchalant about this and stated these are a lower end part. 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. These features improve an engines efficiency, resulting in more horsepower and torque and improved mileage potential. 500 max! Parts made from tooling for the cancelled 1971 BOSS 302 were used for service. 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. THAT IS UNACCEPTABLE IN MY BOOK. instead of 50 oz. Does anyone remember the six cylinder heads they made for Bruce Sizemore. BluePrint Engines stand in front of the class, offering both performance and cost-conscious enthusiasts a powerful alternativeMuscle Series cylinder heads. That would probably have been the only intake available to work , at that time. Flat cylinder heads have large water capacity and excellent breathing characteristics. 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 . Alum. 1970 Fastback (to be finished outside as a Boss 302 tribute), thanks for all the responces! Ford's 302 crate engines use Boss 302 iron blocks.