Age Group: adult. A forum community dedicated to vintage Ford Mustang owners and enthusiasts. Cast aluminum block and heads: Intake Manifold: Composite Boss 302 Specific with shell-welded and runner pack: Exhaust Manifold: Tubular . This includes 260, 289, 302, Boss 302, 351W and related variants. I have certificate for it. 154-4207: Ford Racing Aluminum Valve Covers, Part # M-6582-Z351, SS, 12pt . For use on pre-pollution controlled vehicles only. Typical rebuild, headers, Competition solid lifter cam, 1.73 Crane roller rockers. The factory 780cfm carburetors are really, really expensive, and we didnt want to spend a few thousand dollars on a carburetor, explains Holdener. edelbrock. 154-3701: SB Ford Boss 302 12pt Head Bolt Kit. Every time I put a bigger carb on it, it ran faster. 18 Ft/Lbs - Aluminum Heads. Valve stem heights all the same, decent springs, work fine for my rolller cam, good fit and finish. Enter Fords development of an all-new 351ci engine with poly-angle valve heads and tight-fisted wedge heads destined for a 1970 introduction. There was dust and paper bits all over the keyboard and screen!! What I have found out so far, the engine runs. Theyre fully assembled with valve springs, retainers, locks, guideplates, studs, and seals. Parts made from tooling for the cancelled 1971 BOSS 302 were used for service. Some additional 302 factory valve sizes: 69 Boss 302 intake 2.23 / exhaust 1.71. A tad shorter then a 351W but a little wider due to the size of the heads. Here you can see exactly where each engine outshined the other, and by how much. No stick hole up top. When you shop through links on our site, we may earn an affiliate commission. I didnt and I think some of that lube got burned on the valve seat and causing it to not seal but, will have to open it up to find that out. 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? 1.73:1 rockers, 522 lift 292 duration nets 420 HP at 6300. Said to be "overvalved" for street performance. The Ford heads did well during the testing, making a peak of 362 hp. Batten of Romulus, Mich who did the furnance-blazed heads. The runners are as cast and a bit rough. The store will not work correctly in the case when cookies are disabled. I expected cleanup, but not like this. 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. Reportedly designed by a drag racer and tinkerer named Sherman Sligh, the Boss 300 is engine design gone mad. These heads are coated with assembly lube out of the box. The Mustang 5.0L Coyote Engine Gen 1, Gen 2 & Gen 3 differences are explained by Landan with LMR. I was wondering how these heads would work on my 97 5. The intake ports flow 382 cfm at .750-inch of lift. [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. The factory Boss 302 did not have a deep sump pan although it did have a baffle in the sump, and yes it has 1.73 ratio rockers from Ford. Hot Rodding's Engine Annual and it lays out an article on Bruce Sizemore's I-gas Pinto which reads "How to Build a 500 hp 6-cylinder Ford. Tech-Sheet. I believe C.J. They'll work but have you got the Boss heads? However, Ford already had that architecture in its lineup, while Chevrolet did not. 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? Using the native mouse is awkward. Building LS garbage? The .10 difference in bore spacing( but the bolt pattern is the same square four as the smallblock) makes me think 3. I thought the bolt pattern was the same, that is what helped to make the swap work. If you had the right pistons, you could use 351C 2V heads which are cheap and plentiful and don't have the low end port velocity issues 22GT described. THE FIRST SET I PURCHASED WERE LIKE THIS AND I INSTALLED WITHOUT CHECKING THEM. Up front, upgraded upper and lower control arms fix some of the shortcomings of the original Ford bits, while out back, a Fays2 suspension Watt's link locates . 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. Truth is, a factory original Boss 302 is happiest with a 600 to 650 cfm Holley. can I send the stud kit back? Opens in a new window or tab. For a better experience, please enable JavaScript in your browser before proceeding. 0:1 on blocks with a 3/16 base relief (stock bore and stroke). A big head and lots of airflow means lots of power. 2. While the tunnel port wasnt a complete success, thats how the Boss heads came to be. It took about 500 honest HP to break into the 11s with a little bit heavier car than your mustang. For the 1968 Trans Am season, Ford took the 302 cubic inch Tunnel Port out there in search of victory. Ford Performance Cylinder Head X2 Street. Batten cyl heads was instrumental in developing the high port exhaust for the Dyno Dons and Bob G's and Jack Roushes. Perfect fitment, good quality heads on a budget! There is no flat spot and these engines will pull from 2000 against any rival including a Windsor. I changed the thermostat so it would dump alittle more gas in her no problems so for. Be the first to rate this post. Both companies decided to develop a 302 combination via the previously mentioned four-inch bore and three-inch stroke. Ford took on the world with the GT40 supercar. The BOSS 302s biggest shortcoming is port sizing, which is something Ford has rarely been able to get right. OK, you can do pretty well on a budget. Assembled. Its not a good time to be building a performance engine. The DZ 302 used a 1.5:0 ratio, while the Boss 302 head used a larger 1.72:1 ratio. If weight is a consideration, keep in mind that these iron castings weigh considerably more than the rest of the aluminum heads. The BOSS 302 heads are known as "Cleveland style" heads as they are based on the head designed for the 351 Cleveland engine. The compression ratio is 8. Sizemore, formerly of Preperation H fame, did considerable valvetrain developement and terrorized the former checvvy stronghold of I and J/Gas. The Edelbrock Flathead Cylinder Head is made of A356 aluminum T-6 tempered cylinder head. Locate Boss 302 Heads on sale below with the biggest variety of Boss 302 Heads anywhere online. Prices listed are from the story's original publish date, February 1, 2013. Just A Taste is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. Reworking Cleveland heads I think would require reducing the size of some of the water passages and I unsure of the block clearance . That tradition dates back to the companys founding in 1903. When the SCCA started the Trans-Am series. This minor tune-up would really improve the flow curve and add a measurable amount of torque. . These heads feature A356 aluminum castings that are heat-treated to T-6 specs for superior casting strength and quality. These aluminum heads are assembled with the perfect match of components for outstanding, trouble-free performance. 125 of silicone is likely to blow out. 2.02/1.60 in Valves. All rights reserved. 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 . I might like to put it back together this summer with your fluid damper a 600 holley carb and maybe your electronic distributor . [IMG]http://www.dslextreme.com/users/jbooth/sidenew1.jpg[/IMG][IMG]http://www.dslextreme.com/users/jbooth/enginenew1.jpg[/IMG]. Ultimately, the best cylinder head for your Ford 302 will depend on your specific goals and needs. I would guess Im somewhere around 375HP @ the flywheel in this build. . Hack said: The size of 302 valves has varied a little in some performance versions over the years. Jeff Speegle Come see us @ ConcoursMustang.com MCA Shelby Judge, SAAC & Team Shelby Judge (in no particular order . World contributed the lone cast-iron head to our Ford small-block test. Cylinder heads casting ID decode for 260 289 302 351 390 406 427 428 429 460FE Boss Shelby. They used the 3 center sections of the heads. I have tried most all of it and now do what is known to work.. Well, this may be old info, since the warning tells me that the last post for this discussion occurred >100 days ago. Especially for the price, I would buy them again in a heartbeat. The 300 block may have a slightly taller deck height than the 240. 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. 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. 1.90/1.60 in Valves. Its main function is to seal the combustion chamber and provide a surface for the intake and exhaust valves. Cleveland's Crown Jewel. 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 wide and large port heads with staggered valve placement give the 302 H.O. 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). 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 So now, we have a pair of legends, being compared on the dyno. 370 HP Dressed Long Block Crate Engines BP3027CTC Crate Engine, Base Long Block, Aluminum Cylinder Heads, Roller Camshaft, 600 cfm Carburetor, Ford, 5.0L/302, Each Part Number: MLL-BP3027CTC Not Yet Reviewed Estimated Ship Date: Today Free Shipping $6,519.00 Add To Cart Compare Wish List document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. Actually, everything about these heads helps the little 302. Twisted Wedge and Canted valve (TFS and C302b) in aluminum promote even better performance. 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. Factory was1.73 IIRC. The compression ratio increase is approximately 3/10 of a percent with each 1/8 stroke. The BOSS head was functionally identical to the 351C 4V head.