Truth is, a factory original Boss 302 is happiest with a 600 to 650 cfm Holley. That kind of flow through stock castings is outstanding in any case. CNC Livernois Motorsports Stage II Alum, 4.6L 2V P.I. Crane F-280-0 View the dyno test . Australian car enthusiast with 30 years experience in the high performance industry. Crane 278021 Why would you build a 302. You may also cruise the online auctions for a vintage 5.0L roller block (F1AZ-6010-B). Camshafts are one of the hottest topics on The BOSS 302 Exchange. Not bad considering we were dealing with a static compression ratio near 10.5:1. . Thus the Boss 302 became the first Mustang to use the Cleveland heads, years before they would see regular production. bamc medical records phone number; bbc radio cambridgeshire contact; island escape cruise ship scrapped; . TRW developed these pistons and suppled Ford with them for both racing and production engines. Also; I had Carroll Shelby/SAAC racing program in several other FORD dealerships . Since this family of heads was originally based upon iron 4V heads, they are compatible with Boss 302, Boss 351, and 351 SVO valvetrain components The BOSS 302 heads are known as "Cleveland style" heads as they are based on the head designed for the 351 Cleveland engine. I never did own a Boss 302, but I was around them when they were new.I have had lots of 351C. It is a very special engine with many advances over the standard 302 SBFs. Some of us may be too young to actually have driven an original Boss 302 back when they were introduced in 1969, but all Ford guys should know the history of such an impressive performer. 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. With the aftermarket in full swing, 5.0L Windsor owners no longer starred longingly at the flow offered by their Cleveland counterparts. Since we needed to rev the engine to at least 7,000 rpm to reach the 500hp mark, we needed a sturdy foundation, which came from Demon Engines. They must use the same mufflers. 7) Most curves utilize the following parameters: a. But, off the top of my head I seem to recall 267 on the intake and 187 on the exhaust. We tried this formula to see what our basically stock BOSS 302 would do. A standard Cleveland head's flow numbers of 278 cfm on the intake and 178 cfm . You can see how the valves are canted in this picture. Because the 351C has a dry intake manifold, coolant doesn't flow through the intake manifold. Lunati 306A5LUN 9) Engine parameters were chosen for an engine Ron was interested in building at the time he generated the data. Look at Tremec Trans Gear Calculator comparison to BC stage 3 gear set.Boss heads a. 1969 There are plenty of them lying around used and new-old-stock. . This page last updated: February 3, 2022. CNC Rons Porting Service Alum, Edelbrock 18 Deg. 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 . 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. Intakes; average of all 8, using the Kaase 2.300" valve and his valve job. After driving a Fox body with the T-5 tranny, the BOSSs T&C Top Loader 4-spd seems like the shifter linkage has fallen off because it is so easy and smooth to shift. Performance Alum, 4.6L 4V '96-'98 Ported Stage 2 C.A.P.A. I just received delivery of my first Boss 302 today. Comp 270S 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. This provided more room for larger valves instead of the standard side-by-side arrangement. Heads, cam and carburetors are components that have to be matched to the intended application. -- The flow numbers for the 2 ports are averaged and this number is used in the calculations. We want the best flow numbers with the smallest port volume and the highest velocity (up to a point). Gross lift was obtained by multiplying lobe . Even the stock cam should peek higher than 5500 rpm. 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. This cylinder head casting, aside from cooling passage differences, is also the 1969-70 BOSS 302 head. ENGLE 2122 Enter Fords development of an all-new 351ci engine with poly-angle valve heads and tight-fisted wedge heads destined for a 1970 introduction. 2) Camshaft data are believed to be accurate, but check with camshaft manufacturer for actual up to date data. Mine weighed 3032 lbs from the factory. The BOSS 302 heads used some of the biggest valves in the industry. ERSON 210021 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. . Evidently youre research people are either misinformed, or just dont really care about building anything ford. We learned on the first few pulls that we had too much carburetor with our 750 cfm Holley 4160 and too little camshaft. Designed primarily for use in the SCCA Trans Am series, the Boss 302 was a result of crossbreeding the 302 Windsor short-block with the then-new 351 Cleveland heads. 1.73:1 rockers, 522 lift 292 duration nets 420 HP at 6300. The owner let me come in on a Saturday and do some clean up on the bowls first and then do a bit of porting under his guidance. He did not build a 100% stock engine. The 6.1L Hemi intake port flows 299 CFM at .500" and a maximum of 306 CFM at .650". The Boss 302 head can easily be compared to the Boss 351 head with pushrod guide plates and screw-in rocker arm studs. Your comment answered my question about the oil level as I changed oil tonight. The port diameter for all three heads was 1.63/2.38 on the intake, and 1.46/2.00 on the exhaust. why is tobey maguire not in boss baby 2; kansas city funeral home obituaries; vietnam fatigues sale; baekeland family net worth 2020; boss 302 aluminum heads. The pistons featured small domes and valve reliefs designed to fit the stock Boss 4V (Cleveland) heads to produce a static compression ratio of 10.5:1 using the stock 60cc combustion chambers. For the 1968 Trans Am season, Ford took the 302 cubic inch Tunnel Port out there in search of victory. We will admit to you our results on the dyno were disappointing304 horsepower and 288 lb.-ft. of torque. 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? Comp C30Z Howards 212351 Factory was1.73 IIRC. Have a 70 351 4v stored 25 yrs 50 k miles complete minus carb dist has manifolds 1800. never lube the seal lip ? Howards 212271 Production casting part numbers: 1969 - C9ZE-6090-A or C 1970 - D0ZE-6090-A or B. A 780 cfm carb. Ford took on the world with the GT40 supercar. Boss 429 stock heads:flow specs. e. Dual Plane Manifold, High Flow configuration f. 10:1 Compression Ratio. Stock Heads. The intake is off a 1965 Shellby. Also available in big bore version, part number: M-6010-B302BB. But we do know Ford's engineers took the 351C-4V poly-angle-valve wedge head and used it on the Boss 302-ci engine to achieve peak horsepower in the 6,500- to 7,500-rpm range instead of a rod-snapping 9,000. . Red Boss 302 and 351C-4V heads have smaller wedge chambers with huge valve and port sizing, offering excellent flow at high RPM. The Cleveland style head featured a staggered, canted valve arrangement. Engine: Cylinder . The engine was a 302 HO or a 302 Special, but now every one calls the engine a BOSS 302. 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We discovered this was a 1969-70 BOSS 302 head modified for use on a 351C. When you change the plugs, go ahead and adjust the valve lash because it will be a little bit loose. Did you get them at a Chevy garage sale? Ported Bullet Cylinder Heads Alum, Edelbrock 23 Deg. Some from their Web Site updated Aug. '12. 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. Weingartner Racing Brez Iron, Chevy 990 Rect. . The TFS heads generated peak flow numbers of 250 cfm (intake) and 193 cfm (exhaust). 77569, 77579, 77589, 77599, 77619, 77629, 77639, 77649 SF1020 Alum, Edelbrock Victor Jr. 23 Deg. $59.99. Parts made from tooling for the cancelled 1971 BOSS 302 were used for service. Disconnect (but dont throw away) the electronic RPM limiter because it stretches the dwell above 6,250 RPMs. Wait 1.6 rockers? 1970 Intake - 2.19 inches Exhaust - 1.72 inches. Intake - 2.23 inches 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. 5) The output is useful for determining the effect of changing camshaft parameters and keeping all other parameters constant.