. The harmonic dampener is about 50% thicker for the wide-open-throttle jabs and the hard braking that occurs when racing at a road course. 1969 Intake - 2.23 inches Exhaust - 1.72 inches. f. 10:1 Compression Ratio. Because the 302 Tunnel Port called for high revs in the 9,000 rpm range to make real power, racers scattered these engines all over racetracks across the country and left feeling defeated. But that is another dyno story for another day. Mine also has a 1965 Daytona pinion support with the large bearings, but Im not sure if all BOSSes came with that pinion support. Like the Blue Thunder head, these are race heads, and will produce large air flow numbers with porting and high (0.700"+) lift racing cams. Though not designed specifically for our CHI-headed 302, the Comp roller worked well and allowed us to exceed the 500hp mark. BTW, the 1969 - 1970 Boss 302 had an engine code of "G", and were factory rated at 290 HP @ 5,800 RPM and 290 FtLbs @ 4,300 RPM. I was building that garbage in 2nd grade. In the 1960s, Ford was an outspoken car company, much as Pontiac Division was within General Motors. $59.99. This engine was built in the 80s by someone with way to much money. The heads were secured to the Boss 302 block with ARP 1/2-inch studs, which we procured from Summit Racing. The intake is off a 1965 Shellby. Performance Alum, 4.6L 4V '99-'01 Ported Stage 2 C.A.P.A. Crower 15322 For the 1968 Trans Am season, Ford took the 302 cubic inch Tunnel Port out there in search of victory. Then Ill be looking for upgrades. e. Dual Plane Manifold, High Flow configuration f. 10:1 Compression Ratio. 5) The output is useful for determining the effect of changing camshaft parameters and keeping all other parameters constant. 1969 - C9ZE-6090-A or C Enter Fords development of an all-new 351ci engine with poly-angle valve heads and tight-fisted wedge heads destined for a 1970 introduction. This is said to be the real key to the success of the CHI castings. The street heads had smaller intake valves and flowed around 290cfm. rough idle, For dyno use, we installed a 950 HP Holley-again more than enough carburetion to reach our goal of 500 hp. The oiling system upgrades were critical for our high-rpm needs. c. Intake centerlines were assumed for cases where actual values were not available. 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. flat in the quarter. Our FDC has over 150 racing members and FORD promised us Hubert Platts Drag Mustang after series which disappeared. So your wrong. Stock Valve Sizing What is a Ford 351 Clevor engine? | Rare Car Network Speedmaster79 Boss 429 head - flow data | 460 Ford Forum Thus the Boss 302 became the first Mustang to use the Cleveland heads, years before they would see regular production. I have the flow numbers around here somewhere. CNC Rons Porting Service Alum, Edelbrock 18 Deg. Even the stock cam should peek higher than 5500 rpm. Ported C.A.P.A. CNC ported heads, revised camshafts and a high flow "runners in the box" intake taken from the 302R racecar. Technical Articles - SBF Head Numbers The flywheel was made with a high nodular iron content for running over 7,000 RPMs without grenading. Did you get them at a Chevy garage sale? Crower 15415 The engines do use the Cleveland sled style rocker arms with a 1.73:1 ratio. Ford had objectives for cost, quality, horsepower, torque, idle quality, emissions, just to name a few. Cast from diesel grade iron and designed with added material in key areas, BOSS block strength is far superior to any Ford OE block ever produced. I have not been able to specifically identify because the stamp on corner does not mach up with what it should be. That Ford recently revitalized the name for its latest line of 5.0L-based crate engines adds fuel to the fire, but know that the original Boss 302 was the most powerful factory 5.0L ever offered by Ford up until 2011. . Crower 15321 researchcorp.com) in Englewood, Colorado. 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. The Boss 351 head has screw-in studs and guide plates, and it has the same D1AE-GA casting number meaning both have the same head casting, but are machined differently. CNC Rons Porting Service Alum, Edelbrock/ Chapman Victor 18 Deg 61159 Alum, Edelbrock/ Chapman Victor 23 Deg 61209 Alum, Edelbrock/ Chapman Victor 23 Deg 61229 Alum, Edelbrock/ Chapman Victor 23 Deg 61249 Alum, Edelbrock/ Chapman Victor 23 Deg 61209 Revised Smithberg Racing Alum, Edelbrock Victor Jr. 23 Deg. 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. Have a 70 351 4v stored 25 yrs 50 k miles complete minus carb dist has manifolds 1800. never lube the seal lip ? Ford 335 engine - Wikipedia 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. If you used windsor heads its not a BOSS. Getting to Know Ford's Beasty 351C - OnAllCylinders The heads were to big for a 351CLEVELAND. Truth be told, the Boss 302 was introduced before the Cleveland, and the Boss 302 heads differed slightly from their Cleveland counterparts by way of the coolant passages. in 1969 with Doug Durham and me ,TED FORDMAN EHRHARDT who took a new Boss 302 short block apart and checked all specs. Typical rebuild, headers, Competition solid lifter cam, 1.73 Crane roller rockers. 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Why would you build a 302. Application. Some cams used lift at 0.050" where advertised duration was not available. Stock Valve Sizing c. Small tube headers with mufflers d. a 750 cfm carb. The 351 Cleveland Cylinder Head - Cleveland's Forever Condition does not matter! Crower 15313 Disclaimers: Battle Of The 1969 302-Cube Powerhouses: BOSS 302 Vs. DZ 302 - EngineLabs Ive been using a Holley power valve in the Autolite carb for 3 years now with no internal leaks. 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