we all have our shortcomings. The Ford Racing X307 head is not the casting that comes on the Boss 302 crate engine, but its affordable price made it a natural choice for this test. The Mustang 5.0L Coyote Engine Gen 1, Gen 2 & Gen 3 differences are explained by Landan with LMR. The result was a powerful 290-horse factory screamer with peak street power coming in around 6,000 rpm. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Topping off the Boss 302 was a specially designed aluminum dual-plane intake manifold mounting a 780-CFM Holley four-barrel carburetor, covered by a closed air cleaner assembly with a single inlet snorkel and a ribbed, domed lid that was also chrome-plated. First of all. The real question is, what do these factory motors make, and how do they compare to each other?. 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. Heads - BOSS 302 Throw a blue oval flag over the RHS, Edelbrock, and Ford heads, and the performance is very similar. I figured the Boss would make peak power. loading. . World contributed the lone cast-iron head to our Ford small-block test. [IMG]http://home.pacbell.net/kketell/USAFlag2.gif[/IMG][IMG]http://a8.cpimg.com/image/56/2C/8548438-4e05-00C8003F-.jpg[/IMG]. And really, its a difference in the philosophy behind these two motors. 300 HP wouldn't be far off. No mention of those holes in the instructions. 185 cc Intake. Ford Coyote Engine Cylinder Head Performance Guide This page last updated: February 3, 2022. DART . searching. quick fuel 650 performer rpm intake these heads smallest trick flow cam. Actually, everything about these heads helps the little 302. Jul 7, 2011 I've an Offy Boss 302 tunnel ram that I'd like to use in a build and was wondering aside from the 4V cast iron heads, which aluminum heads will work with this combo. These were available in stock and have the right size intake valves so I grabbed them instead. It had to sneak the GTO in under the radar of upper management. The 363 uses FRPP Z2 cylinder heads. Roush? If you're drag racing in a class where the weight of the car divided by the cubic inches determines what class you run in, it may be advantageous to drop the displacement a little if it will allow you to get into the faster side of a slower class. The 69 and 70 F code 302's are rated at 220 bhp. The Cleveland heads can fit a 302 with the appropriate water passage mods and shouldered bolts to compensate for the bolt hole difference. When you do that, you can see that the TFS head did substantially better than all the other heads above about 4,400 rpm. Stroking an engine is not going to reduce your engine rpm. A forum community dedicated to vintage Ford Mustang owners and enthusiasts. So howd they stack up? The DZ 302 used a 1.5:0 ratio, while the Boss 302 head used a larger 1.72:1 ratio. Ford Boss 302 Engine Build - Build A Better Boss - Tech - MotorTrend This particular evaluation only works, however, if lowest cost is the highest priority. I'd have to look through some old books, but I think it took 3 heads to get 1, although it may have been 2. 3/1 . 040 roller short block A little lope at idle but it pulls everywhere in the rpm range. Neither was really that streetable but of the two the 70 had the smaller valves whick helped a little with the low rpm feel. The drag strip in my area doesn't have any classes. Suddenly these heads arent so appealing. Building LS garbage? 2. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. When it comes to the valve events, Ford and Chevrolet took two different approaches. D1ZE service block and aluminum rods. THAT IS UNACCEPTABLE IN MY BOOK. which will help take the wait off the rear main bearing. 1.90/1.60 in Valves. The Edelbrock E-Street cylinder heads offer American made quality and affordable performance. Exhaust - 1.72 inches. Valves 2.02 / 1.55" . 1.290 in Spring. We learned on the first few pulls that we had too much carburetor with our 750 cfm Holley 4160 and too little camshaft. The BOSS piston was a unique item, configured to use the 289HP rod with the 302 stroke. The cam featured 290 degrees duration and .477 in (12.1 mm) of lift. 60 cc Chamber. These features improve an engines efficiency, resulting in more horsepower and torque and improved mileage potential. 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. These heads use the same valves, valve springs, retainers, and 7/16 in. BOSS Cars Nationals 2005 - BOSS Cars Reunited. Something is very wrong with this, a blueprinted stocker should be in the 375-400 HP range. BluePrint Engines Ford 302 C.I.D. 22-25 Ft/Lbs - Iron Heads. The heads offered an excellent midrange power curve, behind only the Twisted Wedge casting between 4,000 and 5,500 rpm. This made-in-the-USA head is Edelbrock's value leader. Any who, this is a work laptop, and it started out pretty fast, but over time, it eventually slowed down. 2.02/1.60 in Valves. The rocker studs are 7/16, not 3/8. Best 302 Heads - Our Top 5 Selection from 99+ Models (Image/Jim Smart) Although these are 1969-70 BOSS 302 heads, they []. The J code 302-4V was only made in 68. 1970 Fastback (to be finished outside as a Boss 302 tribute), thanks for all the responces! Besides the hemi-style heads themselves, the benefits of this new setup are many: For instance, a deck thickness of 0.7 inch to encourage safe use of power-adders, and full water jackets for proper cooling. It took about 500 honest HP to break into the 11s with a little bit heavier car than your mustang. What type of heads fit a Boss 302 block? Currently working on a 1970 Mach 1 project. But as we've seen before, the heads that produce the best peak power also tend to do so throughout the entire rpm band. The Edelbrock 351C head shows a controlled "swirl ramp" that comes on lightly at 100 RPMs starting at .450" lift and increases steadily to 2000 RPMs at .600" lift. 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). A3 cylinder heads - Cleveland's Forever You might even be able to get some rejects since you'd be cutting them up and remaching anyway. These heads are always perfect, but could use a little bowl work thanks team SUMMIT. Bob Perkins(WI) located it and restored it to original shape and build special plexiglass trailer for it to display. Outperform many more expensive parts. Cylinder Head 190cc Assembled. Production casting part numbers: Ford Performance Cylinder Head X2 Street. The F code 302-2V was made from 68-73. For the Boss 351, the entire Cleveland engine was used instead of simply the heads. It would make a nice high rpm engine that was pretty soft on the lower end where you spend the most time. The 300 block may have a slightly taller deck height than the 240. The block is a 1980 302 Winsor. These are perfect for a street build and the price is outstanding!!. What Is the Boss 351 Mustang? - CJ Pony Parts This conversion was well documented and fairly popular when aftermarket heads were not available. So Im into changing springs, retainers, locators, etc. Having a hard time finding Boss 302 Heads online? . GT40 heads use 1.84 intake / 1.54 exhaust. I also figured that the DZ 302s smaller heads, with better port velocity and more compression, would make more peak torque. That would probably have been the only intake available to work , at that time. I have used them for over 35 years and never seen something like this. 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. i knew a guy that put a set on his 65 shelby. These heads feature A356 aluminum castings that are heat-treated to T-6 specs for superior casting strength and quality. THE NEXT ISSUE WAS VALVE SPRING INSTALL HEIGHT. Other than that it was OK. The BOSS 302 heads used some of the biggest valves in the industry. Fords incredible 1969-70 Trans Am BOSS 302. 1969 mustang fastback boss 429 351 race car front end. After the engine is warmed up to its proper operating temperature range, you must go back and reset all the valves to the proper "hot" valve lash settings. Install the gaskets with the raised seal towards the head and it will fit the ports much better. But as others have mentioned there are modifications that must be done to make it work. No more dyno there. Learn how your comment data is processed. Its useful for when you have a tight engine compartment and headers in a Falcon. Siding Contractors & Companies in Hohenthann - Houzz Rugged, ribbed internally and externally, with a large water capacity and excellent breathing characteristics. Plus, they give you more power behind the wheel and in your wallet! edelbrocks were my first finned aluminum heads for a flathead25 years agoand they were o. k. for a 239 or a 255, due to small combustion chambers. Buy It Now +C $186.98 shipping estimate. Cloyes gears to replace the factory chain set-up and hand-built his own Accel BEI distributor by machining the housing ut of aluminum billet. The Fora platform includes forum software by XenForo. And you'd have to replace the factory two-piece valves which are known to come apart randomly for no reason. At less than $950 for the pair, these Edelbrock heads may be the best bang-for-the-buck investment of all the Ford heads in this test. That may or may not make your ultimate choice any easier, but if so, you can thank us later. 5.0L/302 - FORD - Cylinder Heads - TrickFlow.com Chevy used higher compression and lots of camshaft, combined with mild cylinder heads. The TFS heads made an honest 380 hp, but what we found surprising was how well the Edelbrock E-Street head did, with a peak of 371, substantially better than Ford Racing's 362-hp third-place finish. Currently I have a set of 1969 302 d0oe heads, and a set of 1965 289 heads, I heard both of those won't do it without spending a lot of money porting etcI was thinking of gt40 heads. unfortunately I missed the return window due to illness. The odds of you building a vintage Ford BOSS 302 engine are slim because Ford built so few and so many are already spoken for. 02 intake/1. edelbrock. I might like to put it back together this summer with your fluid damper a 600 holley carb and maybe your electronic distributor . E7 heads use 1.78 / 1.48 just like the 60s stuff. It had a description amd Alan Johnson Cylinder Heads listed as the vendor and contact #805-922-1202. The heads were to big for a 351CLEVELAND. Compatible with Chevy Small Block 302/327/350/383/400 SBC 200cc Intake 68cc Angled Plug Aluminum Bare Cylinder Head $238.88 $ 238 . Expensive mistake. 18 Ft/Lbs - Aluminum Heads. . That was a surprise.. It ran a regular head that was tweaked (either before the slicing or class requirement). "Basically, the DZ 302 shared all the specs with the previous 365-horsepower 327, with the fuelie heads, the Duntov cam, an aluminum intake, and Holley carb. However, it is generally agreed that aftermarket cylinder heads can provide significant performance gains, and that aluminum heads are often the best choice for racing applications. We'd love to test 'em all, but we decided to line up as many performance small-block Windsor Ford heads as we could find, as long as they were available complete for less than $1,350 for the pair. it will be a "high winder" and with a bullet proof bottom end and a 4 bolt block could run to 10,000 rpm b 4 exploading ! 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 .480-inch lift B303 hydraulic. one of the hotrod magazines did an article on the combo back in the 70's. And torque is what gets the car moving from a stop, pushing you back in the seat. Edelbrock E-Street cylinder heads are just the ticket. Intake - 2.23 inches 1970 - D0ZE-6090-A or B. I personally dont think a prospective buyer should have to learn about this issue by reading reviews. I am running them on a 302 and purchased this set for a 351 build. 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 . 2023 Power Automedia. For use on pre-pollution controlled vehicles only. Cleveland Flow Testing - FordMuscle Thesecret to a long life stroker is to add wieght to the crank so you can exterally balance @ 28 oz. Those of you who understand the BOSS 302 know Ford fitted these engines with a 780 cfm Holley but not necessarily because thats what they needed. THE NEXT ISSUE IS THE RECOMMENDED INTAKE GASKET FEL-PRO 1262. The intake is off a 1965 Shellby. Typical rebuild, headers, Competition solid lifter cam, 1.73 Crane roller rockers. I HAD TO CHANGE OUT THE SPRINGS FOR ONES WITH MORE PRESSURE DUE TO VALVE FLOAT AND I AM ONLY RUNNING AN E303 CAM. Both engines are solid flat tappet cams, and the Chevy especially responded to changes in the lash. Parts made from tooling for the cancelled 1971 BOSS 302 were used for service. 2Pcs Straight Aluminum Bare Cylinder Head Compatible with Chevy Small 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. The Coyote V8 engine also concurrently debuted in the 2011 Ford F-150. Bolts in anywhere a 302 will go with the right headers and pan. Ford's original Boss 302 engine was only produced for two years (1969 and 1970), but it was so cool it's understandable why the little V-8 has gained such an . It was the most expensive of all the heads we tested. http://forums.vintage-mustang.com/vintage-mustang-forum/721154-1970-mach-1-h-code-build.html. Differences Between the Mustang 5.0 Coyote Engine - LMR.com One side opted for mild lift and more duration, and the other went for more lift and milder duration.