Your email address will not be published. Hate to tell you this but a BOSS 302 has Cleveland type heads. Changing the carburetor size or compression ratio had the same effect on almost all of the cams so you can still compare one camshaft against another, apples to apples. Your email address will not be published. Look at Tremec Trans Gear Calculator comparison to BC stage 3 gear set.Boss heads a. The front and rear springs are much stiffer than a regular Mustang: 420 lbs/in at the front instead of 240 lbs, and 250 lbs/in at the rear instead of 150 lbs. The Ford 302 H.O. 1) All data is for reference only. No guarantee of actual performance of any engine/camshaft combination can be made. 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. With borrowed geometry from the upcoming 351 Cleveland, the Boss 302 heads featured a canted valve design, which allowed for huge valves and ports. 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. Above you see a casting with a D1ZE part number. I love the exhaust note of all three BOSSes. Casting. According to DIYFord.com, stock Coyote heads can flow 289.4-cfm on the intake side and 201.4-cfm through the exhaust at .500 inch lift.Calculations show that CNC work increases those numbers to somewhere around 314.4-329.4 cfm intake and 221.2-231.1 cfm exhaust. 3-angle VJ Meaux Racing SF600 Iron, Chevy 291 Rect. Not too much carb for this engine. The heads were now capable of supporting more than 700 hp-more than enough for our 500hp 302. Mine also has a 1965 Daytona pinion support with the large bearings, but Im not sure if all BOSSes came with that pinion support. Valves 1.67, 1.45 / 54.5cc. Compression ratio change to 10.5:1 yields same shape curves with slightly higher gross numbers for torque and hp. Actually, a number of manufacturers now offer aftermarket Cleveland heads, thankfully in aluminum. Intakes; average of all 8, using the Kaase 2.300" valve and his valve job. Boss 302 is a Windsor engine; uses Windsor cam lobe profile & 1.6 Windsor rockers. identifying a boss 302 block | Ford Mustang Forums Ford engineers took the new 351 cylinder head and modified it to work with the Tunnel Port block. If the Boss 302 head flow numbers were "too" big for a street driven car: what are the numbers, comparisons against the top of the line Windsor heads being advocated today? Though not designed specifically for our CHI-headed 302, the Comp roller worked well and allowed us to exceed the 500hp mark. The heads were better than any other small block, and the 69 heads used larger valves than a 427 BB Chevy. JPC Racing- CNC Stage 3 Coyote 5.0 Cylinder Heads Known stock Coyote intake port head flow numbers are 289.4-cfm intake and 201.4-cfm exhaust at .500 inch, which is remarkable, but there's more. Ported Chad Speier I-50 E-50 Alum, Edelbrock/ Chapman Victor 18 Deg 61089 Alum, Edelbrock/ Chapman Victor 18 Deg 61109 Alum, Edelbrock 61119 Victor 15 Deg. All flow numbers for Bullet Cylinder Heads come from their Web Site updated Dec. '09. We swapped out the original Comp cam and installed the stick from Cam Research Corp (www.cam Exhaust flow should match whats on Livernois web page since the exhaust valves were not cut. Comp 282S To better the already stout stock 4V Cleveland head, CHI not only improved the airflow, but also reduced what many consider to be an excessive (245cc) port volume. Once we had emptied our bag of tricks, we were eventually rewarded with peak power numbers of 520 hp at 7,200 rpm and 399 lb-ft at 5,700 rpm. I jetted the Holley two sizes up in the primaries and 1 size up in the secondaries. The radiator, brakes, U-joints, bearings, are the same ones used in the 428 CJ cars. f. 10:1 Compression Ratio. Ford was able to develop the BOSS 302 head thanks to being given a proper budget. Stock Heads. Given the port-alignment difference between the CHI 3V, and either the produc-tion 2V or 4V, neither of the factory Ford intakes will fit the CHI heads. . For this, CHI manufactures its own line of matching 3V intake manifolds. With the aftermarket in full swing, 5.0L Windsor owners no longer starred longingly at the flow offered by their Cleveland counterparts. Battle Of The 1969 302-Cube Powerhouses: BOSS 302 Vs. DZ 302 - EngineLabs 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 . The first time out it ran 12.28s at 98 mph. Use an electronic distributor. Any advice would be greatly appreciated. As the 1968 Tunnel Port engine turned into a disaster, someone at Ford Engine Engineering got the idea to put a set of Cleveland heads on a Tunnel Port block and thus was the beginning of what would become the BOSS 302 engine. rough idle, Small-Block Ford Cylinder Heads Parts Interchange - DIY Ford From new ones to the aluminum headed one I have in my fairlane now. Number Produced; Calypso Coral: 3: 410: Acapulco Blue: 6: 375: Bright Yellow: 9: 649: Wimbledon White: M: 194: 1970 Boss 302 . We got more than 450 HP on Fords dyno when we blew right rear tire and it took out Ford training board. HOLMAN and MOODY C30Z Said to be "overvalved" for street performance. Stock Valve Sizing c. Small tube headers with mufflers d. a 750 cfm carb. Might be worth looking into? I have certificate for it. He stated he spent over $10,000 back then. Enzo Ferrari, and others, were handed their backsides. 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The oiling system upgrades were critical for our high-rpm needs. Manganese Bronze valve guides are used . The fenders lips are rolled for the bigger 15 inch wheels and tires. 1970 Ford Mustang Boss 302 Medium Blue Metallic This short block was topped with a set of 1970 Boss 302 heads that featured 58cc chambers and a 2.19/1.71 valve package. Boss 302 Mustang - Wikipedia Same thing goes for the heads and I have a set M-6049-C3 part number high port (not Yates) heads. Set the initial timing at 16 degrees BTDC. Link below why lighten flywheel causes misfire:https://youtu.be/DtoVd5RNUWgTremec Trans T56XL Gear Calculator:https://www.tremec.com/calculadora.phpBoss Cylinder Heads Livernois:https://www.livernoismotorsports.com/product/LPP760111/powerstorm-ford-5-0l-2011-14-boss-series-cylinder-headsBoss Ported Intake Video:https://youtu.be/MGEm4RBGI0Q I simply cant believe this is all youve got. Ford Stock BOSS 302 While the CHI heads offered CNC combustion chambers and an impressive 320 cfm right out of the box, they were given the once over by the gang at Dr. Js. Higher compression ratios require far less total advance. What the Boss 302 and Cleveland heads did share was tremendous airflow potential thanks to cavernous port volumes. The BOSS 302's intake manifold channels coolant and, thus, has different cooling passages. This video well talk about why we decided not to go with a Tremec T56XL. That tradition dates back to the companys founding in 1903. I just received delivery of my first Boss 302 today. Viewers will get a chance to see Boss head flow numbers before and after the work. What is a Ford 351 Clevor engine? | Rare Car Network b. Thus the Boss 302 became the first Mustang to use the Cleveland heads, years before they would see regular production. [] Heres a close up of the head Marvin is using on our 351C build. Not quite. I used a Ford 289-HiPo cam and solid lifters which greatly improved the throttle response. The block is stronger and it has casting plugs instead of freeze plugs, so drain the block in cold climates. Technical Data - Speedmaster claims 309 cc intake , 123 cc Exhaust , 85 cc Chamber, 2.300 Intake, 1.900 Exhaust 11/32 diameter. The port diameter for all three heads was 1.63/2.38 on the intake, and 1.46/2.00 on the exhaust. The heads were to big for a 351CLEVELAND. To put this into perspective, even a fully ported, factory iron Windsor head would not flow as well as a stock Boss 302 or 351 Cleveland head. Thats OK because there is a windage tray which prevents the crank shaft from frothing up the oil. Remember when doing a comparison to other tables check at what pressure differential were they flowed. Hi-Po connecting rods, a forged crankshaft, a four-barrel carburetor, and high-flow cylinder heads. A standard Cleveland head's flow numbers of 278 cfm on the intake and 178 cfm . in 1969 with Doug Durham and me ,TED FORDMAN EHRHARDT who took a new Boss 302 short block apart and checked all specs. 8.2" deck height, finished at 8.200" plus .010" to .015". Ford guys, even young ones just cutting their teenage teeth on the Ford mod motor, should at least be familiar with the term Boss 302. Crane 278021 Learn how your comment data is processed. c. Intake centerlines were assumed for cases where actual values were not available. . Coyote Engine Mods: Best Growl For Your Buck What I have found out so far, the engine runs. BOSS 302 ENGINE BLOCK| Part Details for M-6010-BOSS302 | Ford The Comp roller cam checked in with a 0.731/0.716 lift split (with 1.73:1 rocker), a 252/264 duration split at 0.050-inch, and a tight 107-degree lobe separation angle. 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 . The C3H is Yates but has a higher intake port that requires a specific intake manifold. . Because the BOSS 302s heads sported monster-sized intake ports, these engines had a high-revving demeanor with peak torque and horsepower coming in around 7,000 rpm instead of the Tunnel Ports outrageous nine grand. Stroke that thing. Mine weighed 3032 lbs from the factory. Then Ill be looking for upgrades. Isky 381380 I had 90 runs on an original Boss 302 in a 70 Mustang. For the 1968 Trans Am season, Ford took the 302 cubic inch Tunnel Port out there in search of victory. In my 70 years of fooling with cars, we always had a formula. Ive had the same 1970 BOSS 302 for over 50 years. The Boss 302 version of the cylinder heads used small 58cc cambers and large 2.23" intake valves. Clay Smith C3048b Plus we used cam dial-in and it was only off a half degree. The intake is off a 1965 Shellby. 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. CHI also offers a number of other intakes for use on the taller 9.2-inch 351C, 9.5-inch 351W, and even the 10.3-inch 400M blocks. Lunati 41207 The engine was factory rated for 290 horsepower at 5,800 rpm and 290 lb-ft of torque at 4,300 rpm, and power is sent through a four-speed manual transmission to a 9 . This same . I am presently installing a 302 clevor into a 83 mustang GT. Made of A356 T6 cast aluminum, the Z head offers improved flow numbers and more power if you give it your best attention. The pistons and the compression ratio, carburetor size, carburetor jetting, the valve sizes, the rocker arm ratio, the transmission gear ratios, the rear end ratio, the wheel size, the tire size, the exhaust system Well, we hope you get the idea that choosing a camshaft is not to be taken lightly and you must understand its importance on your car's performance and meeting your expectations. Care must be taken when installing the CHI heads, as there is a definite right and left cylinder head-the heads must be installed with the water passages toward the front of the engine so they line up with those in the intake. 4.6L Ported BH Performance Alum, 4.6L 2V P.I.