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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. Ford Boss 302 engine - Wikipedia A forum community dedicated to vintage Ford Mustang owners and enthusiasts. 2.02/1.60 in Valves. Truth is, a factory original Boss 302 is happiest with a 600 to 650 cfm Holley. Bolts in anywhere a 302 will go with the right headers and pan. We got more than 450 HP on Fords dyno when we blew right rear tire and it took out Ford training board. 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. stud-mounted roller rockers as the current Ford Racing 429 Cobra Jet heads, and the standard Cobra Jet intake and exhaust manifolds bolt right on. Assembled. Throw a blue oval flag over the RHS, Edelbrock, and Ford heads, and the performance is very similar. 1/23 . If youre using stock pistons, get the version of these heads with the smaller intake valves (Part #5023). 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. These were available in stock and have the right size intake valves so I grabbed them instead. DONT USE ANYTHING ELSE OR IT WILL LEAK. . Boss 302 heads are unique.No other heads will work without some changes. detroit metro auto parts "302" - craigslist . . This engine was built in the 80s by someone with way to much money. Battle Of The 1969 302-Cube Powerhouses: BOSS 302 Vs. DZ 302 - EngineLabs For those who consider swirl a detriment to producing power this is a positive thing. 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. Well I have a 1977 copy of Pop. One thing I found particularly awesome about these heads is the spark plug holes and threads. . 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. THE NEXT ISSUE IS THE RECOMMENDED INTAKE GASKET FEL-PRO 1262. NOS 1969 1970 Mustang Boss 302 speedometer. Due to the larger Cleveland-style heads, the Boss 302 weighs somewhat more than the normal 302, tipping the scales at 500 lbs. quick fuel 650 performer rpm intake these heads smallest trick flow cam. JavaScript is disabled. If you are looking for a set of World aluminum heads, you can find them at Bill Mitchell Products. Combining with an iron block and aluminum heads, the 4.0L SOHC V6, made a substantial amount of more power than its predecessor, producing 210 horsepower at 5,250 RPM and 240 lb/ft of torque at 3,250 RPM. Typical rebuild, headers, Competition solid lifter cam, 1.73 Crane roller rockers. Ford Boss 302 Engine Build - Build A Better Boss - Tech - MotorTrend The cylinder head is an important component of the internal combustion engine in a Ford 302 car. Top Rated Seller Top Rated Seller. I was going to have my reconnecting rods reconditioned with 5/16 arp bolts. 625-HP Ford 'Boss 300' Inline-Six Destroys V8s Without Forced Induction The 302 has a 9:1 compression ratio, while the 347 and 363 have 9.6:1 and 10.2:1, respectively. Typing on the key kaed is cumbersome. Roush? The product is a great entry level/cheap head though so 5 stars! 030 AND 2 OF THEM WERE. The 240 and 300 are basically the same engine -- based on the same block design anyway. Intake - 2.19 inches I was still only available with the special 302ci 290 hp high output engine. The wide and large port heads with staggered valve placement give the 302 H.O. $ 5,595.00 Learn More. Fords incredible 1969-70 Trans Am BOSS 302. Greg has spent eighteen years and counting in automotive publishing, with most of his work having a very technical focus. can I send the stud kit back? Generator stud kit for 1938-48, use #8506. At RHP reasonably well ported (340+ / 200) set of iron heads with large S/S valves, manganese bronze guides, p/c seals, rocker studs and guideplates are $1,695 exchange. 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). 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. At idle when vacuum is the highest the valve guides leak lots of oil into the intake. It would make a nice high rpm engine that was pretty soft on the lower end where you spend the most time. There is a lot he did to this engine, if you're interested but he kept the orig. The result was a powerful 290-horse factory screamer with peak street power coming in around 6,000 rpm. TRW developed these pistons and suppled Ford with them for both racing and production engines. Today, the aftermarket lineup of Ford cylinder heads has plenty of castings from which to choose. It collects next to nothing. 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. Great bang for your buck with these heads. I think Im in love, lol!!. For what the (complete) Boss heads and a intake will run seems you would be better off just going with a good set of after market heads. Ford and Mustang Intake manifold This page last updated: February 3, 2022. Im trying to leave this pretty much as is, until I get a few good drives in. What looks like parting lines are huge in some places, one exh runner has a stick of Aluminum protruding into the runner (pic 1). Cover Autolite 4V casting D0ZX9B48-3 . Ah now Plummer - it's not a secret if you post it on VMF! The heads are a direct replacement for previous Twisted Wedge heads and work with all Twisted Wedge specific pistons. Edelbrock E-Street cylinder heads are ideal for entry level street performance engines. IF YOU DO THIS BE SURE TO USE PERMATEX #2 ON THE INTAKE STUDS. Boss 302 heads on a 289 | Vintage Mustang Forums 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 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. Large Inventory of New, Used and OEM Automotive Parts at Great Prices, Ford Boss 302 Block Heads Crane Roller Rockers Msd Distributor Jomar Stud, Boss 302 Engine Cylinder Head Bolts 716 Set 1969 1970 C9zz6065-a Sb 1116 Head, Boss 429 Heads Mustang 1969-1970 C9ae Hemi Original Ford Heads Rebuilt, Boss 302 Mustang Gasketsford Nos Headrocket Intake Fel-pro Valve Covers, Boss 302 Engine Cylinder Head Bolts Set 1969 1970 Mustang Ford Holman Moody, Arp 154-3602 Black Sb Ford Boss 302 Head Bolt Kit, Arp Head Studs 2011 2012 Ford Mustang Gt Boss 302 5.0l 4v V8 Coyote Stud Kit, Arp Head Stud Kit For Sb Ford Boss 302 M6010 Racing Block W 351c Iron Heads, New Fits 2010-2014 Ford Mustang Fo2503276 Right Side Halogen Head Light Assembly, Engine Cylinder Head Gasket-boss 302 Leftright Cometic Gasket C5961-040, Engine Cylinder Head Gasket-boss 302 Leftright Cometic Gasket C5958-040, Ford Racing M-6049-x2 Street Cruiser Cylinder Head 302351 X2 Head, Arp Cylinder Head Bolts High Performance Hex Head Ford 1969-70 Boss 302 Kit, Arp 154-4206 Head Stud Kit - New Boss 302 W351c Heads For Ford Small Block New, Arp 154-4206 Black Ford New Boss 302 W351c Heads 12pt Hsk, Arp Head Stud Kit For 69-70 Sb Ford Boss 302 W 716-14 Cylinder Block Threads, Ford Racing M-6014-boss Head Stud Kit Required For Boss 302 Blocks, 1969 Ford Mustang Boss 302 Article - Must See, Oem New Ford Racing Boss 302r Head Changing Kit - 11mm Head Bolts M6067m50br11, 1969 Boss 302 Mustang Cougar Coil To Head Bracket W Coil Strap Hardware, 1969 Boss 302 Mustang Cougar Coil To Head Bracket W Correct Hardware, Oem New Ford Racing Boss 302r Head Changing Kit M6067m50br, Arp Sbf Head Stud Kit - New Boss 302 W351c Heads 154-4206, Fits 2010-2014 Ford Mustang Gt Fo2502276c Capa Left Halogen Head Light Assembly, Headlight Set For 2010-2014 Ford Mustang Left And Right Black Housing 2pc, New Fits 2010-2014 Ford Mustang Gt Fo2502276 Left Halogen Head Light Assembly, Cometic Gaskets C5962-040 Ford New Boss 302 Head Gasket New Boss 302, Ahg1320l Apex Cylinder Head Gasket Driver Left Side New For F150 Truck Lh Hand, 1969 1970 Mustang Boss 302 Cylinder Head Bolt - Made In Usa - New, Arp-154-4002 Arp Cylinder Head Stud Pro-series Hex Head For Ford Sb Boss 302, 1969 1970 Boss 302 Head Bolt Set Of 20 Nos C9zz-6065-a, Ford Performance Parts M-6067-m50br11 Boss 302r Cylinder Head Changi, Valve Cover Adaptor Ford Cleveland Boss 302 On Small Block Ford Heads, Engine Cylinder Head Gasket Set-boss 302 Vin U Fits 2012 Ford Mustang 5.0l-v8, Es72480 Felpro Cylinder Head Bolts Set Of 10 New For F150 Truck Ford F-150 11-17, 1969 1970 Mustang Boss 302 Cylinder Head Bolt Set 20 Pieces Made In Usa - New, 090-072 Dorman Cylinder Head Plugs Set Of 5 New For Truck F150 F250 F350 Falcon, Mr. Gasket 5932 Boss 302 351c 4 Barrel Heads Ulktra Seal Header Gaskets, Hg4112 Dnj Cylinder Head Gasket Driver Or Passenger Side New For F350 Truck Ltd, Ahg1320r Apex Cylinder Head Gasket Passenger Right Side New For F150 Truck Rh, Es72479 Felpro Set Of 10 Cylinder Head Bolts New For F150 Truck Ford F-150 11-17, Ahg485 Apex Cylinder Head Gasket New For F350 Truck Falcon Galaxie Ltd Mustang, Remflex Exhaust Gaskets Ford Boss 302 351c Aftermarket Head 3091, Headlight For 2013-2014 Ford Mustang Pair Driver And Passenger Side Capa, Arp 154-4206 Fits Ford New Boss 302 W351c Heads 12pt Hsk. Comparing the cylinder heads on paper, using data collected by Holdener for a previous article, the Boss heads clearly come out ahead. 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. 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. 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.. 1970 - D0ZE-6090-A or B. The BOSS 302's biggest shortcoming is port sizing, which is something Ford has rarely been able to get right. FORD and Mustang Cylinder Heads (6090) - mustangtek.com However, Ford already had that architecture in its lineup, while Chevrolet did not. Once I pick the heads I was going to find a good cam for daily driving/ performance. 154-3702: SB Ford 302W 12pt Head Bolt Kit. These are perfect for their intended use, the street. The DZ 302 has a reputation for being a high-RPM screamer, and the camshaft is definitely part of that. Small Block Ford. These heads use the same valves, valve springs, retainers, and 7/16 in. Their modern combustion chamber design helps to improve the combustion process and their larger-than-stock intake and exhaust ports help to move more air through your engine. The TFS heads appeared to be the big dog in the room when it came time for testing. This particular evaluation only works, however, if lowest cost is the highest priority. 2005-2014 Mustang Engine Guide | Steeda Sizemore, formerly of Preperation H fame, did considerable valvetrain developement and terrorized the former checvvy stronghold of I and J/Gas. I really liked my 69 428 CJ. Maximum output for less money!. Like with standard 4V heads, you would have to machine the tops of the heads to accept screw-in, adjustable rocker studs. 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. 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. 6 Budget Small-Block Ford Cylinder Heads That Work - MotorTrend . Boss 302 Mustang - Wikipedia VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Ford engineers took the new 351 cylinder head and modified it to work with the Tunnel Port block. While the DZ 302 had a stronger midrange than the Boss 302, in stock form, the Boss reigns supreme in the higher RPM range. Nevertheless, for a street engine, this head delivers excellent midrange power. We came to the conclusion 4 were 2 close to the sparkplug bore and 2 were to close the the intake runners to be safe to use on the 5073 aluminum head. The BOSS piston was a unique item, configured to use the 289HP rod with the 302 stroke. A factory high-rise dual-plane intake manifold was used, with one part not period-correct. There are still 6 other steam holes not present in the 5073 head that are in the 350 block circa 1972. It had a description amd Alan Johnson Cylinder Heads listed as the vendor and contact #805-922-1202. Luckily I had the tools to put them back on but this could have been a issue and made them not bolt on heads. Tell ya what ,leave the ford enginrs to the ford guys, and you keep playing with that some ole cookie cutter bowtie garbage youre so used to. That may or may not make your ultimate choice any easier, but if so, you can thank us later. 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. I SENT THEM RIGHT BACK. 58 cc Chamber. Something is very wrong with this, a blueprinted stocker should be in the 375-400 HP range. World contributed the lone cast-iron head to our Ford small-block test. Renegade Street. 340 HP Boss, Long Block, Assembled, Internal Balance, Aluminum Cylinder Heads, Ford, Small Block Windsor, Each Part Number: FMS-M6007X2302E ( 1 ) Free Shipping Special Order $10,649.99 Not Available At This Time This product cannot be ordered at this time. Come join the discussion about restoration, modifications, NOS parts, troubleshooting, VIN codes, and more! http://forums.vintage-mustang.com/vintage-mustang-forum/721154-1970-mach-1-h-code-build.html. 58 cc Chamber. Some additional 302 factory valve sizes: 69 Boss 302 intake 2.23 / exhaust 1.71. The stroke difference between the two engines amounted . Did you get them at a Chevy garage sale? Even the stock cam should peek higher than 5500 rpm. I understand why now they are so much more money! Whoever invented that crap ought to be shot. 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. Though I rated the overall part as good, the areas that really count are just average. Pair. This could easily cause a hot edge and create premature detonation of the charge. Opens in a new window or tab. 2. Im sorry guys but you somehow missed something there are boss 302s out there cranking out way more than what you guys are claiming. We apologize for the inconvenience See all 22 photos. 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. Ford Coyote Engine Cylinder Head Performance Guide Flat cylinder heads have large water capacity and excellent breathing characteristics. 1970 Ford Mustang Boss (302) - Ultimate Guide 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. The holes are just big enough for the spark plug socket, which guides it in perfectly.