The Twisted Wedge heads also had the strongest horsepower curve above 4,000 rpm of all the heads tested. . The Mustang 5.0L Coyote Engine Gen 1, Gen 2 & Gen 3 differences are explained by Landan with LMR. 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. This minor tune-up would really improve the flow curve and add a measurable amount of torque. I am building a budget 440 RV motor that should be a monster street tire smoker for under $3000. At the brochure, the two engines are identical power-wise, according to Holdener, but we prefer to let the dyno tell us who makes what. Cylinder heads casting ID decode for 260 289 302 351 390 406 427 428 429 460FE Boss Shelby. They topped a 302 Windsor with the Cleveland -style heads, making the first Clevor. After idling for a couple of minutes the engine will start smoking horribly. Hardcore Boss 302 Restoration Tech! - MotorTrend 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. 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. Cylinder Head 190cc Assembled. . boss 302 heads for sale | eBay The best aluminum heads for 302, without a doubt, have an effect on the vehicle's RPM. A forum community dedicated to hot rod owners and enthusiasts. stud kit is of poor quality everything else in my order was good quality. were designed to be 1-for-1 replacements for Boss 351 cylinder heads. The TFS heads appeared to be the big dog in the room when it came time for testing. Age Group: adult. 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Im not sure what has happened to Edelbrock, but their quality control sucks. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Actually, everything about these heads helps the little 302. World contributed the lone cast-iron head to our Ford small-block test. Would it mess with the computer really bad. [IMG]http://www.dslextreme.com/users/jbooth/sidenew1.jpg[/IMG][IMG]http://www.dslextreme.com/users/jbooth/enginenew1.jpg[/IMG]. 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. Hate to tell you this but a BOSS 302 has Cleveland type heads. 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. 154-3702: SB Ford 302W 12pt Head Bolt Kit. 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. Ford took on the world with the GT40 supercar. Chevy used higher compression and lots of camshaft, combined with mild cylinder heads. He used a correct Duntov camshaft and set the lash a little tighter than the original spec, at .020-inch. I figured the Boss would make peak power. What heads can you put on a Boss 302 block? - Vintage Mustang Forums Had to mill out some (- one hour with a Dremel), to get my stock distributor clamp to fit. The Ford is specd out at 228 degrees at .050-inch lift, but lift was a different matter. 1-330-630-1555 1-888-841-6556. . The BOSS piston was a unique item, configured to use the 289HP rod with the 302 stroke. 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. And really, its a difference in the philosophy behind these two motors. I was going to have my reconnecting rods reconditioned with 5/16 arp bolts. Yes you can bolt the 351C heads to a 289/302/351W block. 1970 Fastback (to be finished outside as a Boss 302 tribute), thanks for all the responces! The Fora platform includes forum software by XenForo. Finding a Street Boss intake likely wouldn't be too difficult as multiple manufacturers have cranked them out over the years. The F code 302-2V was made from 68-73. So now, we have a pair of legends, being compared on the dyno. 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. After spending an hour on the Edlebrock Tech line we determined the instructions are out of date relative to the current product being delivered of the 5073 head. Ford Racing teamed up with Jon Kaase to redesign their 429 Cobra Jet cylinder heads, and the results are these Super Cobra Jet heads. Some of the guys were running ford 300 six cylinders with good success. Better compression then stock, better breathing then stock. See it here: yes its ben done. View Details. 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. I understand why now they are so much more money! Budget iron can run $1195.00 for an easy 500 + hp but any more needs more valve area. one of the hotrod magazines did an article on the combo back in the 70's. Raced and owned quite a few Boss 302s. Ive had several other brands, but HP has been the best. A recent test of a prototype set of Hammerhead's castings bolted on a 427ci small-block stroker produced over 600 hp with a streetable hydraulic roller camshaft and 600 lb-ft of torque. True but it seems excessive to me. These all-cast heads are designed for hydraulic flat tappet and hydraulic roller cam engines with hefty intake runners, stainless steel valves, Viton seals, and dual springs. (BOSS) Battle Of The 1969 302-Cube Powerhouses: BOSS 302 Vs. DZ 302 - EngineLabs I KNOW FROM EXPERIENCE. Not the 2012-13 Coyote DOHC BOSS, but instead the genuine pushrod original from an era when Ford did the unthinkable repeatedlyand won! The BOSS 302 Registry is not affiliated with the Ford Motor Company. 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. 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 engine was called a "boss 289" not a clevor, a clevor was a 351W with 351C heads and a custom intake. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. 02 intake/1. Boss 302 aluminum heads | Ford Muscle Cars Tech Forum The completed head is also wider so push-rod holes need to be cut-out on the block side, then sealed with "o" rings, etc. 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. The cam featured 290 degrees duration and .477 in (12.1 mm) of lift. 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. There are many different types of cylinder heads for Ford 302 engines, so it is difficult to make a definitive conclusion about them. He stated he spent over $10,000 back then. 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). saw a pair of Boss 302 heads online for $400 and thought why not. Pontiac was the outlaw division. This combo has been dynod at 460-ish hp at 5000 rpm and 550 ft lbs of torque at 2000 rpm. To clear up a few questions, the combustion chambers are 60cc, not 64cc. The advantage was better flow because the intake was on one side and the exhaust was on the other. Edelbrock E-Street cylinder heads are just the ticket. Not even close to what I thought I should be getting in a brand new set of heads. Experimental Part . Is it the 69 or 70 Boss 302 head that's more streetable? I SENT THEM RIGHT BACK. 351 cleveland heads on a 302 | Hot Rod Forum And like the others mention, it was C.J. It was a world beater and symbolic of the end of the classic muscle car era. Sold individually. if you have over. While the DZ 302 had a stronger midrange than the Boss 302, in stock form, the Boss reigns supreme in the higher RPM range. IF YOU DO THIS BE SURE TO USE PERMATEX #2 ON THE INTAKE STUDS. This provided more room for larger valves instead of the standard side-by-side arrangement. The combustion chambers are filled with a 2.150-inch, 7mm-stem titanium intake valve, and a 1.60-inch, 7mm-stem titanium exhaust valve. Parts made from tooling for the cancelled 1971 BOSS 302 were used for service. Factory was1.73 IIRC. The darned thing was rabid dog fast. Always interested in how things work, he enjoys sharing his passion for automotive technology with the reader. Come join the discussion about restoration, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more! VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. It collects next to nothing. D. Hearne is on the money as usual. However, there are a few notable differences between the Coyote in the F-150 and the Coyote in the Mustang. For the testing, Holdener put together a non-numbers matching replica of the DZ 302. In 1970 the Boss 302 was a Camaro killer, it could go 0-60 mph in 6.0 seconds. If you used windsor heads its not a BOSS. The results of this test didnt really surprise me, except for one thing, reveals Holdener. which will help take the wait off the rear main bearing. Not only did the TFS heads produce the most peak power, they also logged the best average torque and horsepower. These are perfect for the low compression big blocks of the mid to late 70s. While the tunnel port wasnt a complete success, thats how the Boss heads came to be. Be the first to rate this post. The power numbers are so close that if we had tested these heads in a typical street car, it's doubtful we would have seen much of a difference in performance among the middle four heads. PRO1 170 Ford Tech Sheet - H30. The intake ports flow 382 cfm at .750-inch of lift. These lightweight aluminum heads bolt up to your small block Ford and feature 190cc intake/60cc exhaust runners, 60cc combustion chambers, and 2. 1970 - D0ZE-6090-A or B. Cross Boss 302 Mustang off highway use. Today's small-block Ford street engine builder has it easy. 58 cc Chamber. 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. The E-street came in second in peak horsepower and a very close third in average horsepower and torque. 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. If you are looking for a set of World aluminum heads, you can find them at Bill Mitchell Products. The Boss 302 takes the Mustang GT's suspension and adds higher-rate coil springs, stiffer bushings, and a larger diameter rear stabilizer bar. edelbrock. 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. The 69 and 70 F code 302's are rated at 220 bhp. 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. One thing I found particularly awesome about these heads is the spark plug holes and threads. A tad shorter then a 351W but a little wider due to the size of the heads. 22-25 Ft/Lbs - Iron Heads. I assumed thats how they went and I also used the end seals. We will safeguard your e-mail and only send content you request. Heads are sold individually. What? Won't work with the 289 stroke. 88 DNA Motoring LEPOW-038 Aluminum Bare Angled Cylinder Head [For Chevy SBC 302/327/350/383/400] 3 The heads were to big for a 351CLEVELAND. At idle when vacuum is the highest the valve guides leak lots of oil into the intake. THe new heads will have the same bolt-pattern as the original 6. They have cast iron seats and guides (titanium valve compatible) and are set up for studs and guide plates. These heads use the same valves, valve springs, retainers, and 7/16 in. Small Block Ford Head Torque Sequence | GTSparkplugs Above you see a casting with a D1ZE part number. We learned on the first few pulls that we had too much carburetor with our 750 cfm Holley 4160 and too little camshaft. Ah now Plummer - it's not a secret if you post it on VMF! We certainly don't want to ignore the peak numbers, and that's where the TFS Twisted Wedge heads really earned the spotlight. You wont find heads of this quality at a better price anywhere. This is where you must spend the money. 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! When you shop through links on our site, we may earn an affiliate commission. FORD and Mustang Cylinder Heads (6090) - mustangtek.com ---185cc Aluminum Heads for SB Ford --- 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 Typical rebuild, headers, Competition solid lifter cam, 1.73 Crane roller rockers. The BOSS 302 engine could use better cylinder heads with right-size port and valve sizing in a set of Trick Flow cylinder heads and a more compatible roller mechanical camshaft. 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. It came with aluminum heads that were way too big for the cam and my use. See the top reviewed local exterior and siding contractors in Hohenthann, Bavaria, Germany on Houzz. cast iron vs aluminum | Mustang Forums at StangNet Though I rated the overall part as good, the areas that really count are just average. Luckily I had the tools to put them back on but this could have been a issue and made them not bolt on heads. [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. Ford has always been a car company that dared to go where no automaker had ever gone before. Very nice , Made in USA quality and same price as off shore 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. The heads are a direct replacement for previous Twisted Wedge heads and work with all Twisted Wedge specific pistons. What looks like parting lines are huge in some places, one exh runner has a stick of Aluminum protruding into the runner (pic 1). This was a simple fix, using a drill press to open up the restrictors before we could use the 1/2-inch ARP head bolts. 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. Like with standard 4V heads, you would have to machine the tops of the heads to accept screw-in, adjustable rocker studs. And torque is what gets the car moving from a stop, pushing you back in the seat. Im sure you had over 400. The problem is the oil drain back passage has very poor alignment with the block and the valves are sitting in a pool of oil. 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. Edelbrock heads are available in two different versions, with either 1.94- or 2.02-inch intake valves. "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. Build your own custom newsletter with the content you love from EngineLabs, directly to your inbox, absolutely FREE! The Edelbrock E-Street cylinder heads offer American made quality and affordable performance. But there is absolutely something else wrong. 302 Engine Specifications | Classic Cars - CarMemories.com The TFS head looks much stronger than the Edelbrock version above 5,500 rpm, but the maximum differential is only 13 hp at 5,900 rpm. These heads are always perfect, but could use a little bowl work thanks team SUMMIT. The store will not work correctly in the case when cookies are disabled. They dont flow as well as some of the more expensive options available but they flow way better than OEM cast iron heads. Pic 2 is a spot next to a water port on the intake surface where it looks like the facing tool tilted some. All Cleveland style heads including the BOSS has 1.73 to 1 ratio rockers. 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. 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. 045. This could easily cause a hot edge and create premature detonation of the charge. But thanks to all of your responses this is not for me! Street 512 Mopar motor in a Dodge Dart . If this becomes a bit more subjective by adding in power (and why wouldn't you? Fig. Pair. Truth is, a factory original Boss 302 is happiest with a 600 to 650 cfm Holley. 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. And you'd have to replace the factory two-piece valves which are known to come apart randomly for no reason. 154-3607: SB Ford 289-302 standard 12pt Head Bolt Kit. Ive built 302/347 engines with stock heads, Roush180/Windsor Jr. , and Trick Flow Twisted Wedge heads. The Coyote V8 engine also concurrently debuted in the 2011 Ford F-150. The Tech was nonchalant about this and stated these are a lower end part. Cast from prime A356 T6 aluminum, these "Z" heads from Ford Racing were designed using solid modeling technology. 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. I expected cleanup, but not like this. For a better experience, please enable JavaScript in your browser before proceeding. A Modern Ford 351 Cleveland Nets Almost 900 Horsepower N/A - EngineLabs Siding Contractors & Companies in Hohenthann - Houzz The connection with metered networks (or connecting to your phones hotspot) appear to deteriorate over time, and causes this error. $1,692.99. The head bolts used on a Boss 302 were a flanged-style head bolt. This new design offers a 25-50 HP increase over current Cobra Jet heads, depending upon displacement and camshaft. The cylinder head is bolted to the engine block and sits above the pistons. However, in the upper RPM range, the Boss 302 shows a definite, significant advantage over the DZ 302. 70 Boss 302 intake 2.19 / exhaust 1.71. That puts lift over .500 inch .514 according to our calculations, minus the lash, Holdener reveals. I would guess Im somewhere around 375HP @ the flywheel in this build. Also, the visual aesthetic is pretty plain, and the laptop doesnt have a sleek feel to it. 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. 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 . 015 AND THE REST WERE. 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. 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. The Ford, however, made a peak horsepower number of 374 horsepower at the same 6,700 rpm as the Chevrolet, and again, had the same peak-torque RPM as the Chevy, but made slightly less peak torque, at 324 lb-ft. How can you call it racing if you're putting the brakes on before the finish line? 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. The BOSS 302s biggest shortcoming is port sizing, which is something Ford has rarely been able to get right. Best heads for the price. 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. It used to be listed in the FRRP catalog. Alum. So the induction system is kind of a toss-up. 154-3701: SB Ford Boss 302 12pt Head Bolt Kit. 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. They still have classes? 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. And the reality is, they did, in modified trim the way they were raced in the Trans-Am series. . Something is very wrong with this, a blueprinted stocker should be in the 375-400 HP range. Peak power was good, at 349 hp, and torque is also reasonable.