Pontiac was the outlaw division. (BOSS) Buy It Now +C $186.98 shipping estimate. As fitted to the Boss, the heads feature steel spring seats, screw-in rocker studs, pushrod guide plates, and adjustable rocker arms. Well, I got about 500 miles on the engine now and couldnt be happier about the build. loading. But as others have mentioned there are modifications that must be done to make it work. I had 90 runs on an original Boss 302 in a 70 Mustang. Turbo 300-inch Ford can bang off 10.90s at 120 mph. They are Worth it. Aluminum. All Rights Reserved. $1,692.99. 1970 Fastback (to be finished outside as a Boss 302 tribute), thanks for all the responces! Needless to say they began to really spank everybody and by the end of the season the six cylinders were out ruled. For a better experience, please enable JavaScript in your browser before proceeding. Not to mention the 50lbs you lose off the front. What I got was good, but the quality control person should not have let these go out the way they are. Peak power numbers are always fun to throw around, but car-crafters are also very astute at determining what all that power will cost. Come join the discussion about restoration, modifications, NOS parts, troubleshooting, VIN codes, and more! 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. JavaScript is disabled. Boss 302. Im sure you had over 400. 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. 289 & 302 (Except Boss 302), Dual Plane [Natural] (27) $207.99. The cylinder head also contains the spark plug and fuel injector(s). So, a big head, lots of camshaft, an aluminum intake, and a Holley four-barrel. Dimensions in Inches (LxWxH): 24.1 x 24.1 x 8.7. Ports 2.38" x 1.68" C9ZZ-9424-C. C9ZE-9425-A . If you used windsor heads its not a BOSS. 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. So it can already be made to haul. Purchased a long block on CL. 030 AND 2 OF THEM WERE. Both engines are solid flat tappet cams, and the Chevy especially responded to changes in the lash. 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. they mandated a 5.0-liter displacement limit. 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. The cam featured 290 degrees duration and .477 in (12.1 mm) of lift. which will help take the wait off the rear main bearing. The Coyote V8 engine also concurrently debuted in the 2011 Ford F-150. The connecting rods and crankshaft are made of forged steel, and the heads are aluminum with roller rocker arms. The Good and Bad of the head bolts on the SBF is that their are only 8 of them. These heads are coated with assembly lube out of the box. The additional space improved the engine's breathing. The winner in this evaluation is almost always the least-expensive head just because of the way the math formula works. Required fields are marked *. Flat cylinder heads have large water capacity and excellent breathing characteristics. Like with standard 4V heads, you would have to machine the tops of the heads to accept screw-in, adjustable rocker studs. I was wondering how these heads would work on my 97 5. BOSS Cars Nationals 2005 - BOSS Cars Reunited. crank, offset-grinding it to a smaller crankpin diam. Rugged, ribbed internally and externally, with a large water capacity and excellent breathing characteristics. 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. Still have lots of racing Boss and Hipo parts. 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. Its useful for when you have a tight engine compartment and headers in a Falcon. 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. . Is it the 69 or 70 Boss 302 head that's more streetable? ---185cc Aluminum Heads for SB Ford --- They'll work but have you got the Boss heads? Whenever youre running a flat tappet cam, always use a zinc additive, Building Classic Ford 351 Cleveland Power. These heads are screaming on the 302 I just built and are great quality. But for perhaps a majority of enthusiasts, this evaluation may be too simplistic. GT40 heads use 1.84 intake / 1.54 exhaust. These are perfect for a street build and the price is outstanding!!. The Ford heads did well during the testing, making a peak of 362 hp. I changed the thermostat so it would dump alittle more gas in her no problems so for. 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. Production casting part numbers: 22-25 Ft/Lbs - Iron Heads. Edelbrock E-Street cylinder heads are ideal for entry level street performance engines. A big head and lots of airflow means lots of power. The compression ratio is 8. 010 runout and wouldnt come out of the head without a lot of force (we never took it out). Small Block Ford. The supplied ones are generic and poor fitting. I installed these on a factory 302 HO in my 94 Mustang. What? Great performance didnt notice any quality issues or burred edges when they came in. The RHS headsproduced the next-closest average horsepower and torque, with the Edelbrock and Ford heads very close behind. Combined with the big bore and short stroke, everyone thought these things wanna rev. The reality is that the head flow and dual-plane intake really limited the RPM.. 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. These aluminum heads are assembled with the perfect match of components for outstanding, trouble-free performance. Install the gaskets with the raised seal towards the head and it will fit the ports much better. The Fora platform includes forum software by XenForo. We got our answer. Fords incredible 1969-70 Trans Am BOSS 302. I passed over a different set of heads at the recommendation of my machinist. This could easily cause a hot edge and create premature detonation of the charge. You can see how the valves are canted in this picture. 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 . Why would you build a 302. My build is a 306, 9. It ran a regular head that was tweaked (either before the slicing or class requirement). The Chevrolet used a 1.50:1 rocker, while on the Cleveland head, they used a 1.73 ratio. Works with most standard components. 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 300 HP wouldn't be far off. I simply cant believe this is all youve got. Once I pick the heads I was going to find a good cam for daily driving/ performance. I first installed an oil trap in the PVC thinking something went wrong with the piston rings. The Cleveland type heads are used in the 302 heads. sbf 302 aluminum cylinder heads. Both 1969 and 1970 302 BOSS engines will run great with a properly tuned 750 Holley. You MUST flycut the valve reliefs on the pistons larger if using stock pistons. 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 ! They used the 3 center sections of the heads. There is a lot he did to this engine, if you're interested but he kept the orig. Im just hoping the new Edelbrock intake that arrived yesterday is better than these. TRW developed these pistons and suppled Ford with them for both racing and production engines. Im using a fairly mild flat tappet cam, so growing the installed height of the springs by 60 or 70 thousandths woul put both the seat pressure and open pressure weill within specs for a flat tappet cam. Cover Autolite 4V casting D0ZX9B48-3 . Had to mill out some (- one hour with a Dremel), to get my stock distributor clamp to fit. We started FORD Drag Club at Horn-Williams Ford in Dallas,Tx. Cylinder Head 190cc Assembled. The store will not work correctly in the case when cookies are disabled. The GT-40 cylinder head was produced in cast iron and aluminum, available from Ford Motorsport SVO and Ford Racing. Great top end with these heads also. 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. for use w/ Special Intake. These heads feature A356 aluminum castings that are heat-treated to T-6 specs for superior casting strength and quality. JavaScript is disabled. 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. Looking at the graph, it looks like the DZ 302 actually outperforms the Boss 302 from 3,700 rpm until 5,800rpm. The Fora platform includes forum software by XenForo. Said to be "overvalved" for street performance. It was rated at 10.5:1 compression and 230 bhp (Shelby was rated at 250). So the induction system is kind of a toss-up. The Ford is specd out at 228 degrees at .050-inch lift, but lift was a different matter. 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. 035 (which I am using). Was running 850 dbl pump Holley with 4:56 gears, and I was running 12:20s at over 112 mph in the quarter. The BOSS 302 heads used some of the biggest valves in the industry. The RHS heads come out of the box with a very nice-looking casting, and back that image up with respectable performance. Parts made from tooling for the cancelled 1971 BOSS 302 were used for service. 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! Batten cyl heads was instrumental in developing the high port exhaust for the Dyno Dons and Bob G's and Jack Roushes. 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. Other than this the heads flow nicely on the street. I have not been able to specifically identify because the stamp on corner does not mach up with what it should be. It's important to note that this was the only head in our test that required its own separate valvetrain. These are perfect for the low compression big blocks of the mid to late 70s. We learned on the first few pulls that we had too much carburetor with our 750 cfm Holley 4160 and too little camshaft. After the engine is warmed up to its proper operating temperature range, you must go back and reset all the valves to the proper "hot" valve lash settings. We got more than 450 HP on Fords dyno when we blew right rear tire and it took out Ford training board. Edelbrock 5093: Cylinder Heads, E-Street, Aluminum, Assembled, 84cc Chamber, 210cc Intake Runner, Mopar, Big Block, Pair Are you looking for a set of entry-level street performance heads for your modern street rod, muscle car, or truck? They still have classes? Top Rated Seller Top Rated Seller. A factory high-rise dual-plane intake manifold was used, with one part not period-correct. While the DZ 302 had a stronger midrange than the Boss 302, in stock form, the Boss reigns supreme in the higher RPM range. Not the 2012-13 Coyote DOHC BOSS, but instead the genuine pushrod original from an era when Ford did the unthinkable repeatedlyand won! Put on a 351w in a 1979 Tbird. But as we've seen before, the heads that produce the best peak power also tend to do so throughout the entire rpm band. 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. The intake is off a 1965 Shellby. The Ford head uses a net-lash design that makes the valvetrain non-adjustable. Henry Ford II wasnt going to have it any other way. Truth is, a factory original Boss 302 is happiest with a 600 to 650 cfm Holley. . VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Come join the discussion about restoration, modifications, NOS parts, troubleshooting, VIN codes, and more! The 300 and the 240 are identical blocks,the heads are different and the 240 is basically a destroked 300 so it will rev a little higher. Currently working on a 1970 Mach 1 project. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. IF YOU DO THIS BE SURE TO USE PERMATEX #2 ON THE INTAKE STUDS. Don't know if it's still good. I used them with a Comp Cams 274XE cam and a QFT 600cfm carb. The connecting rods began life as the same C3AE rod as the 289 HiPo but they had 3/8" bolts and they were spot faced instead of broached where the head of the bolt sits. Boss 302 - 1970 Boss. 98 sold 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? Edelbrock E-Street cylinder heads are just the ticket. The Boss 302 and 351C-4V head casting are the same except for a minor difference in water passages. Meaning, their AQL is very low. Valve stem heights all the same, decent springs, work fine for my rolller cam, good fit and finish. http://forums.vintage-mustang.com/vintage-mustang-forum/721154-1970-mach-1-h-code-build.html. 58 cc Chamber. Your email address will not be published. The BOSS 302's biggest shortcoming is port sizing, which is something Ford has rarely been able to get right. For a better experience, please enable JavaScript in your browser before proceeding. Classes? The Mustang 5.0L Coyote engine has evolved into the Boss 302, VooDoo 5.2L, and the Predator 5.2L. This engine was built in the 80s by someone with way to much money. 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. Does any 351 Cleveland head fit it? Cylinder Head. 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He stated he spent over $10,000 back then. First of all. The head bolts used on a Boss 302 were a flanged-style head bolt. Above you see a casting with a D1ZE part number. As far as I'm aware you only choice for factory heads in the Boss 302. Aluminum will allow you 1pt up in compression for its ability to shed heat. The stroke difference between the two engines amounted . 02 intake/1. It was 351C heads, 3 of them, cut up into 6 pieces, then furnanced blazed. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. I am through with their products. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. The holes are just big enough for the spark plug socket, which guides it in perfectly. Intake - 2.23 inches There are plenty of them lying around used and new-old-stock. Russell; COMP Cams; TCI Auto; FAST; E-Comm Sales: Sales: 888-799-1135 Tech: 800 . I have a Eldabrock Performer intake,msd distributor and 6al box and a 61mm bbk throttle body. That tradition dates back to the companys founding in 1903. Original aluminum Boss 302 valve cover brackets for the spark . Our test heads came with the larger intakes that clearly contributed to these heads' strong showing. 70 Boss 302 intake 2.19 / exhaust 1.71. For Use w/289/302/351 Windsor-Style Engines. Junk ass Chevrolet stroker engines.puleeeeeze. FORD 5.0L/302 Cylinder Heads. Bought these and compared to the other (PC). 1969 - C9ZE-6090-A or C The BOSS 302 Registry is not affiliated with the Ford Motor Company. That may or may not make your ultimate choice any easier, but if so, you can thank us later. Outperform many more expensive parts. Greg has spent eighteen years and counting in automotive publishing, with most of his work having a very technical focus. So, instead, they ran a simple 750cfm Holley carburetor, along with 1-3/4-inch dyno headers. Currently I have a set of 1969 302 d0oe heads, and a set of 1965 289 heads, I heard both of those won't do it without spending a lot of money porting etcI was thinking of gt40 heads. 64cc Volume. I work in IT, so I know a good laptop/PC when I use one. They dont flow as well as some of the more expensive options available but they flow way better than OEM cast iron heads. 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. Valves 2.02 / 1.55" . Perfect fitment, good quality heads on a budget! Guys if you want to make serious power. saw a pair of Boss 302 heads online for $400 and thought why not. Both these motors were factory-rated at the same 290 horsepower, but that number is suspect, says Holdener. And torque is what gets the car moving from a stop, pushing you back in the seat. It used to be listed in the FRRP catalog. 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). I really liked my 69 428 CJ. The only caveat to all this is that the Twisted Wedge heads do limit valve lift (0.600 inch) and duration on stock pistons due to their repositioned intake valvejust so you know. the second head had not been full deburred from the milling process. Using the native mouse is awkward. 0:1 on blocks with a 3/16 base relief (stock bore and stroke). 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. Then Ill be looking for upgrades. Opens in a new window or tab. I SENT THEM RIGHT BACK. Also, the visual aesthetic is pretty plain, and the laptop doesnt have a sleek feel to it. This particular evaluation only works, however, if lowest cost is the highest priority. 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. Said to be "overvalved" for street performance. 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. Neither was really that streetable but of the two the 70 had the smaller valves whick helped a little with the low rpm feel. D. Hearne is on the money as usual. 045. Its not a good time to be building a performance engine. Needless to say the head kicked ***. pulled heads out of box, one head was in very nice shape, ready for service. Above you see a casting with a D1ZE part number. I was building that garbage in 2nd grade. 154-4207: Ford Racing Aluminum Valve Covers, Part # M-6582-Z351, SS, 12pt . Plus we used cam dial-in and it was only off a half degree. THE NEXT ISSUE WAS VALVE SPRING INSTALL HEIGHT.
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