Experimental Boss 302 style heads . Cast from prime A356 T6 aluminum, these "Z" heads from Ford Racing were designed using solid modeling technology. good luck with that. Always interested in how things work, he enjoys sharing his passion for automotive technology with the reader. D. Hearne is on the money as usual. Reworking Cleveland heads I think would require reducing the size of some of the water passages and I unsure of the block clearance . 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? So the induction system is kind of a toss-up. Dells are ok computers. BluePrint Engines Ford 302 C.I.D. For Use w/289/302/351 Windsor-Style Engines. These heads use the same valves, valve springs, retainers, and 7/16 in. Both companies decided to develop a 302 combination via the previously mentioned four-inch bore and three-inch stroke. Cylinder Head. Enter Fords development of an all-new 351ci engine with poly-angle valve heads and tight-fisted wedge heads destined for a 1970 introduction. 1969 - C9ZE-6090-A or C 1.290 in Spring. 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. Back in the day, there was all kinds of speculation that they made more than 400 horsepower. I was still only available with the special 302ci 290 hp high output engine. The DZ 302 used a 1.5:0 ratio, while the Boss 302 head used a larger 1.72:1 ratio. I installed these on a factory 302 HO in my 94 Mustang. Meaning, their AQL is very low. The DZ 302 has a reputation for being a high-RPM screamer, and the camshaft is definitely part of that. Would it mess with the computer really bad. Tech-Sheet. My fault for not setting the intake on the engine to check my end gaps. They have cast iron seats and guides (titanium valve compatible) and are set up for studs and guide plates. These heads are coated with assembly lube out of the box. Boss 302 heads are unique.No other heads will work without some changes. Like with standard 4V heads, you would have to machine the tops of the heads to accept screw-in, adjustable rocker studs. 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. Small Block Ford. Intake - 2.19 inches The Duntov cam that GM used in the DZ 302 had over 250 degrees of duration at .050 [inch]! Holdener explains. The compression ratio increase is approximately 3/10 of a percent with each 1/8 stroke. 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! Sold individually. 09 of shims installed so they look good. 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. For high-performance's street and competition, our dual-plane design makes outstanding power from 1500 to 6500 rpm. If you are looking for a set of World aluminum heads, you can find them at Bill Mitchell Products. The Ford heads did well during the testing, making a peak of 362 hp. So, instead, they ran a simple 750cfm Holley carburetor, along with 1-3/4-inch dyno headers. For a better experience, please enable JavaScript in your browser before proceeding. Compatible with Chevy Small Block 302/327/350/383/400 SBC 200cc Intake 68cc Angled Plug Aluminum Bare Cylinder Head $238.88 $ 238 . Both 1969 and 1970 302 BOSS engines will run great with a properly tuned 750 Holley. Production casting part numbers: Suddenly these heads arent so appealing. Expensive mistake. I passed over a different set of heads at the recommendation of my machinist. The advantage was better flow because the intake was on one side and the exhaust was on the other. 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. If I wasnt on a time crunch, I would have returned these heads. they mandated a 5.0-liter displacement limit. Have a 70 351 4v stored 25 yrs 50 k miles complete minus carb dist has manifolds 1800. never lube the seal lip ? I thought the bolt pattern was the same, that is what helped to make the swap work. The Fora platform includes forum software by XenForo. The GT-40 cylinder head was produced in cast iron and aluminum, available from Ford Motorsport SVO and Ford Racing. Do the torque in 2 steps, first just hand tight, second with the torque wrench. They topped a 302 Windsor with the Cleveland -style heads, making the first Clevor. We evaluated each head on the flow bench, average overall power, and we calculated average horsepower-per-dollar. Today, the aftermarket lineup of Ford cylinder heads has plenty of castings from which to choose. The Dart castings would have been the Iron Eagle versions, and the Pro Comps are affordable in aluminum. Best for 302-351 cubic inch engines. What looks like parting lines are huge in some places, one exh runner has a stick of Aluminum protruding into the runner (pic 1). However, its always fun to think about building one or even erecting one from scratch, which you can do with a Ford Performance BOSS block (M-6010-BOSS302) and Cleveland heads. 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. However, it also led to a lot of upset Bowtie fans for some reason. Cylinder heads are available fully assembled or as bare castings. These are perfect for the low compression big blocks of the mid to late 70s. Throw a blue oval flag over the RHS, Edelbrock, and Ford heads, and the performance is very similar. They'll work but have you got the Boss heads? 125 of silicone is likely to blow out. That may or may not make your ultimate choice any easier, but if so, you can thank us later. But thanks to all of your responses this is not for me! I really liked my 69 428 CJ. The Ford is specd out at 228 degrees at .050-inch lift, but lift was a different matter. 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 . Future availability is unknown. Learn how your comment data is processed. I understand why now they are so much more money! Revised cooling system passageways Siamese bore with drilled coolant crossover holes (Except on M-6010-B302BB ) Increased bulkhead material OK, you can do pretty well on a budget. There was dust and paper bits all over the keyboard and screen!! 500 max! 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 . That would probably have been the only intake available to work , at that time. I was going to have my reconnecting rods reconditioned with 5/16 arp bolts. Above you see a casting with a D1ZE part number. The less you know the more you need vacuum secondarys. 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. FORD and Mustang Cylinder Heads (6090) 5752143: 59 332 352 . I changed the thermostat so it would dump alittle more gas in her no problems so for. very poorly packaged, opened it and there was no screen protection sheet between screen and keyboard. Won't work with the 289 stroke. 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. And like the others mention, it was C.J. I have a 1969 Boss 302 original however I need to reassemble it I originally bought ARIES 10:1 forged pistons I believe 30 over . 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. Im looking to build an engine that produces 300ish hp. These heads have the right size valve for those piston. Other than that it was OK. Though I rated the overall part as good, the areas that really count are just average. The heads also required custom-length Comp Cams pushrods to compensate for the relocated valves. Henry Ford II wasnt going to have it any other way. Aluminum will allow you 1pt up in compression for its ability to shed heat. Click to expand. And really, its a difference in the philosophy behind these two motors. 030 AND 2 OF THEM WERE. 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. When the vacuum is high, the intake is sucking oil through the valves. FORD 5.0L/302 Cylinder Heads. Cylinder heads casting ID decode for 260 289 302 351 390 406 427 428 429 460FE Boss Shelby. . I remember reading about it in some magazine and I saw it on another forum recently. I would however like to be able to buy a set of heads and not have to go through them like I had to with these. 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. This educational content is not intended to be a substitute for professional advice. Ah now Plummer - it's not a secret if you post it on VMF! Ever wonder what those camshaft specification numbers really mean and how they affect engine performance? 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. I believe C.J. We should also mention that although we didn't test a stock iron casting, it should be clear that even the heads on the lower end of our test would still be an improvement over stock factory castings. It is now becoming sluggish, and I get LBSOD issues frequently because of the wifi. Budget iron can run $1195.00 for an easy 500 + hp but any more needs more valve area. Not too much carb for this engine. Valves 2.02 / 1.55" . I never did own a Boss 302, but I was around them when they were new.I have had lots of 351C. 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. We did this to expand the scale to show the differences in power near peak horsepower. You may also cruise the online auctions for a vintage 5.0L roller block (F1AZ-6010-B). It was the most expensive of all the heads we tested. 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 ! Not to mention the 50lbs you lose off the front. Alum. But as we've seen before, the heads that produce the best peak power also tend to do so throughout the entire rpm band. 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. Once I pick the heads I was going to find a good cam for daily driving/ performance. But it should be noted that Ak Miller built a '67 Mustang at about the same year and created a 300 out of a 240 ( for the younger ones a 300 used to be a truck engine and the smaller 240 was used in the cars,LOL) with a set of Webers and bigger valves and cam, it turned in the twelves, that's in the late 60s. Comparing the cylinder heads on paper, using data collected by Holdener for a previous article, the Boss heads clearly come out ahead. i knew a guy that put a set on his 65 shelby. 045. For use on pre-pollution controlled vehicles only. TRW developed these pistons and suppled Ford with them for both racing and production engines. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. 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 cylinder head is bolted to the engine block and sits above the pistons. I have certificate for it. i drank a bottle of 10,000 rpm and thode a rod !!! Great top end with these heads also. [IMG]http://home.pacbell.net/kketell/USAFlag2.gif[/IMG][IMG]http://a8.cpimg.com/image/56/2C/8548438-4e05-00C8003F-.jpg[/IMG]. 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. They had to combine a four-inch bore from a 327 block with the three-inch stroke from the 283, Holdener elaborates. It had to sneak the GTO in under the radar of upper management. The BOSS head was functionally identical to the 351C 4V head. 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. 040 roller short block A little lope at idle but it pulls everywhere in the rpm range. Autozone has a great price on these heads. The .10 difference in bore spacing( but the bolt pattern is the same square four as the smallblock) makes me think 3. From new ones to the aluminum headed one I have in my fairlane now. That puts lift over .500 inch .514 according to our calculations, minus the lash, Holdener reveals. I have a Eldabrock Performer intake,msd distributor and 6al box and a 61mm bbk throttle body. Are you looking for a set of entry-level street performance heads for your modern street rod, musclecar, or truck? I purchased these because I needed some better than stock, but not full out race heads. The 4-bolt caps can be seen here. 300 HP wouldn't be far off. Ford brought back the iconic 5.0L in the 2011 Mustang. Sign up for a free trial to MotorTrend+ today. These heads feature A356 aluminum castings that are heat-treated to T-6 specs for superior casting strength and quality. More than 400 horses easy. Small Block Ford. Once those two tasks were completed, the heads delivered the best peak horsepower and torque numbers of the entire test, knocking down an excellent 380 hp at 6,000 rpm. 2023 Power Automedia. Today's small-block Ford street engine builder has it easy. The intake is off a 1965 Shellby. The holes are just big enough for the spark plug socket, which guides it in perfectly. For the testing, Holdener put together a non-numbers matching replica of the DZ 302. stock rebuild,. Parts made from tooling for the cancelled 1971 BOSS 302 were used for service. extreme amount of burrs left all around the rocker shaft mounting pads. Luckily I had the tools to put them back on but this could have been a issue and made them not bolt on heads. Fords incredible 1969-70 Trans Am BOSS 302. He used a correct Duntov camshaft and set the lash a little tighter than the original spec, at .020-inch. stud kit is of poor quality everything else in my order was good quality. my signature linesnot really directed at anyone in particular.. Jeff Speegle Come see us @ ConcoursMustang.com MCA Shelby Judge, SAAC & Team Shelby Judge (in no particular order . Im looking for three Ford Cleveland 4V engines. reach with flat gasket seat. loading. There are many different types of cylinder heads for Ford 302 engines, so it is difficult to make a definitive conclusion about them. These aluminum heads are assembled with the perfect match of components for outstanding, trouble-free performance. This engine was built in the 80s by someone with way to much money. The result was a powerful 290-horse factory screamer with peak street power coming in around 6,000 rpm. Our test heads came with the larger intakes that clearly contributed to these heads' strong showing. This makes it easy to torque and lower cost for better aftermaket bolts and studs. Building LS garbage? Search 6 Hohenthann siding contractors & companies to find the best exterior and siding contractor for your project. This new design offers a 25-50 HP increase over current Cobra Jet heads, depending upon displacement and camshaft. Huge difference in quality. 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. Australian car enthusiast with 30 years experience in the high performance industry. 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. RHS shipped the heads with what should have been a sufficient single 1.460-inch-diameter valvespring, but the horsepower graph reveals that above 5,800 rpm the power trailed off, leading us to think that perhaps with a better spring this head could have carried the power out beyond 6,000 rpm, which would have improved its peak horsepower number. For a better experience, please enable JavaScript in your browser before proceeding. 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. 64cc Volume. When the SCCA started the Trans-Am series. THAT IS UNACCEPTABLE IN MY BOOK. 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 .480-inch lift B303 hydraulic. The 68 J and F code heads show to be the same in my information. Does anyone remember the six cylinder heads they made for Bruce Sizemore. Other Intakes >> Application. Will these heads work well?. . . Exhausts have only a. Does any 351 Cleveland head fit it? VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. I simply cant believe this is all youve got. Peak power was good, at 349 hp, and torque is also reasonable. if you have over. I think I have seen afrermarket heads but cannot rememmber where. The heads were to big for a 351CLEVELAND. And the reality is, they did, in modified trim the way they were raced in the Trans-Am series. We will admit to you our results on the dyno were disappointing304 horsepower and 288 lb.-ft. of torque. It collects next to nothing. Ive built 302/347 engines with stock heads, Roush180/Windsor Jr. , and Trick Flow Twisted Wedge heads. 035 (which I am using). JavaScript is disabled. Especially for the price, I would buy them again in a heartbeat. I used them with a Comp Cams 274XE cam and a QFT 600cfm carb. So now, we have a pair of legends, being compared on the dyno. The wide and large port heads with staggered valve placement give the 302 H.O. Its useful for when you have a tight engine compartment and headers in a Falcon. second time I have been disappointed with Edelbrock. Pair. JavaScript is disabled. Get big power on a small budget with BluePrint Muscle Series cylinder heads! Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4 reach with flat gasket seat. A forum community dedicated to vintage Ford Mustang owners and enthusiasts. 289 & 302 (Except Boss 302), Dual Plane [Natural] (27) $207.99. Age Group: adult. The Fora platform includes forum software by XenForo. Reportedly designed by a drag racer and tinkerer named Sherman Sligh, the Boss 300 is engine design gone mad. I was wondering how these heads would work on my 97 5. They dont flow as well as some of the more expensive options available but they flow way better than OEM cast iron heads. Exhaust - 1.72 inches. The Chevrolet used a 1.50:1 rocker, while on the Cleveland head, they used a 1.73 ratio. While it only had .480-inch of lift, that duration would really allow the RPM to climb. We got our answer. 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. Your email address will not be published. No more dyno there. Thx. which de-stroked it. Like we said, if best power or least price is your only concern, then the decision is easy. 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. You MUST flycut the valve reliefs on the pistons larger if using stock pistons. would love to return this old jalopy back!!!. DART . Next, we test a low-rpm cam and a high-rpm cam in the same engine to demonstrate the power differences. 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. 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. Evidently youre research people are either misinformed, or just dont really care about building anything ford. Fits on Dodge ramcharger, monaco, w100 series, sierra, pioneer, d300 pickup, d100 series, custom. 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. So it can already be made to haul. First of all. I SENT THEM RIGHT BACK. 1970 Fastback (to be finished outside as a Boss 302 tribute), thanks for all the responces! $ 5,595.00 Learn More. Come join the discussion about restoration, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more! Did you get them at a Chevy garage sale? 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. Had to mill out some (- one hour with a Dremel), to get my stock distributor clamp to fit. Was running 850 dbl pump Holley with 4:56 gears, and I was running 12:20s at over 112 mph in the quarter. They are also cast with combustion The 240 and 300 are basically the same engine -- based on the same block design anyway. 1969 I figured the Boss would make peak power. The Boss used a mild camshaft, mild compression, and lots of head flow, Holdener says. Those of you who understand the BOSS 302 know Ford fitted these engines with a 780 cfm Holley but not necessarily because thats what they needed. What? No stick hole up top. 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. Keep the RPMs under 5,500 and valve lift is more like. unfortunately I missed the return window due to illness. And you'd have to replace the factory two-piece valves which are known to come apart randomly for no reason. This conversion was well documented and fairly popular when aftermarket heads were not available. The block is a 1980 302 Winsor. Valve stem heights all the same, decent springs, work fine for my rolller cam, good fit and finish. The best aluminum heads for 302, without a doubt, have an effect on the vehicle's RPM. The heads are a direct replacement for previous Twisted Wedge heads and work with all Twisted Wedge specific pistons. I would suggest pulling the vavles and wiping everything down. The winner in this evaluation is almost always the least-expensive head just because of the way the math formula works. 015 AND THE REST WERE. 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 . ---185cc Aluminum Heads for SB Ford --- . 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.
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