It features a forged dome piston to bring compression up to the original 11.0:1 compression ratio with the 64cc 186 casting fuelie heads. All Cleveland style heads including the BOSS has 1.73 to 1 ratio rockers. Ports 2.38" x 1.68" C9ZZ-9424-C. C9ZE-9425-A . 1/23 . I believe C.J. 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 . Said to be "overvalved" for street performance. The less you know the more you need vacuum secondarys. And you'd have to replace the factory two-piece valves which are known to come apart randomly for no reason. edelbrock. E-Street cylinder heads feature as-cast ports and are designed for entry-level street performance applications operating in the idle-to-5500 rpm range. Nevertheless, for a street engine, this head delivers excellent midrange power. The stroke difference between the two engines amounted . This makes it easy to torque and lower cost for better aftermaket bolts and studs. Even the stock cam should peek higher than 5500 rpm. Because of the pent-roof design of the heads, the Boss also had forged pop-up pistons to achieve the desired 10.5:1 compression ratio. Top Rated Seller Top Rated Seller. Valves 2.02 / 1.55" . Above you see a casting with a D1ZE part number. for use w/ Special Intake. Future availability is unknown. The TFS head looks much stronger than the Edelbrock version above 5,500 rpm, but the maximum differential is only 13 hp at 5,900 rpm. The runners are as cast and a bit rough. 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. good luck with that. But thanks to all of your responses this is not for me! 4V. I just got a block that is 289 .30 over and I wanted to reuse my pistons I think they are sealed power 7006p (obsolete now). Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4in. To clear up a few questions, the combustion chambers are 60cc, not 64cc. 010 runout and wouldnt come out of the head without a lot of force (we never took it out). OK, you can do pretty well on a budget. This is my first engine build, let me know if Im doing it all wrong. Australian car enthusiast with 30 years experience in the high performance industry. There was a guy named CJ Batten who would cut up 3 boss 302 heads and put them on a 300 IL6.The one I remember was on in a rail type dragster. You MUST flycut the valve reliefs on the pistons larger if using stock pistons. JavaScript is disabled. Edelbrock heads are available in two different versions, with either 1.94- or 2.02-inch intake valves. The Cleveland style head featured a staggered, canted valve arrangement. I installed these on a factory 302 HO in my 94 Mustang. detroit metro auto parts "302" - craigslist . Having a hard time finding Boss 302 Heads online? Not all that long ago, the small-block fan's only choice for Ford cylinder heads was the classic 351W Ford heads swap on a 302. I also figured that the DZ 302s smaller heads, with better port velocity and more compression, would make more peak torque. They are very capable iron heads. It's important to note that this was the only head in our test that required its own separate valvetrain. That means 305 maximum cubic inches. These heads use the same valves, valve springs, retainers, and 7/16 in. 035 (which I am using). The push-rods needed to be extended using a 2-piece design w/a small aluminum sleeve (that slides in the block) to join the 2 pushrods. Best heads for the price. It was honestly a guess on my part and the Tech had no additional information or opinion to offer. Its biggest weakness may be the price. That was a surprise.. . Also; I had Carroll Shelby/SAAC racing program in several other FORD dealerships . The BOSS 302 heads used some of the biggest valves in the industry. D1ZE service block and aluminum rods. These heads are really impressive!!!!!! So Im into changing springs, retainers, locators, etc. Speedway and Try-State Cylinder heads both stand behind this product. The 302 has a 9:1 compression ratio, while the 347 and 363 have 9.6:1 and 10.2:1, respectively. Henry Ford II wasnt going to have it any other way. Cast aluminum block and heads: Intake Manifold: Composite Boss 302 Specific with shell-welded and runner pack: Exhaust Manifold: Tubular . 60 cc Chamber. The Coyote V8 engine also concurrently debuted in the 2011 Ford F-150. I passed over a different set of heads at the recommendation of my machinist. Luckily I had the tools to put them back on but this could have been a issue and made them not bolt on heads. After its time on the pump, the DZ 302 posted 357 horsepower at 6,700 rpm and 333 lb-ft of torque at 4,300 rpm. extreme amount of burrs left all around the rocker shaft mounting pads. It's all bracket racing. refresh the page. Peak power was good, at 349 hp, and torque is also reasonable. Very limited suppliers of flathead parts always look to speedway for my hotrod items. Using the native mouse is awkward. Much of this gain over the stock 345-hp Boss 302 rating can be attributed to Westech's lower 140-degree engine coolant test procedure and open dyno headers. I remember reading about it in some magazine and I saw it on another forum recently. 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. 289 & 302 (Except Boss 302), Dual Plane [Natural] (27) $207.99. Your email address will not be published. As far as I'm aware you only choice for factory heads in the Boss 302. Boss 302 heads are unique.No other heads will work without some changes. (BOSS) Fits factory 1979 - 1995 Mustang oil pan with custom oil pickup tube, part number: M-6622-BOSS302 NASCAR inspired front oil feed on both lifter galleys. It ran a regular head that was tweaked (either before the slicing or class requirement). Expensive mistake. They show to be suitable for the 221-302 Ford Small Block. I would guess Im somewhere around 375HP @ the flywheel in this build. The RHS headsproduced the next-closest average horsepower and torque, with the Edelbrock and Ford heads very close behind. There was dust and paper bits all over the keyboard and screen!! Ford New Boss 302 w/351C HDS Hex Head Stud Kit. E7 heads use 1.78 / 1.48 just like the 60s stuff. 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. We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. He stated he spent over $10,000 back then. For a better experience, please enable JavaScript in your browser before proceeding. Bill Mitchell Products BMP 087510 - Aluminum Engine Block Ford Small Block 302 Mains, 8.200 Deck, 3.995 Bore, Billet Caps. However, there are a few notable differences between the Coyote in the F-150 and the Coyote in the Mustang. Neither was really that streetable but of the two the 70 had the smaller valves whick helped a little with the low rpm feel. I changed the thermostat so it would dump alittle more gas in her no problems so for. saw a pair of Boss 302 heads online for $400 and thought why not. Small Block Ford. Both engines are solid flat tappet cams, and the Chevy especially responded to changes in the lash. What I have found out so far, the engine runs. stud kit is of poor quality everything else in my order was good quality. 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 intake is off a 1965 Shellby. The product is a great entry level/cheap head though so 5 stars! very poorly packaged, opened it and there was no screen protection sheet between screen and keyboard. Ultimately, the best cylinder head for your Ford 302 will depend on your specific goals and needs. They had to combine a four-inch bore from a 327 block with the three-inch stroke from the 283, Holdener elaborates. Same transmission, run a 351W flywheel/flexplate (same as a C). 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. Im sure you had over 400. Especially for the price, I would buy them again in a heartbeat. You might even be able to get some rejects since you'd be cutting them up and remaching anyway. The TFS heads appeared to be the big dog in the room when it came time for testing. 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. THe new heads will have the same bolt-pattern as the original 6. 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. Not sure about the 5089. First of all. Ah now Plummer - it's not a secret if you post it on VMF! Comparing the cylinder heads on paper, using data collected by Holdener for a previous article, the Boss heads clearly come out ahead. can I send the stud kit back? Im extremely disappointed in this blog.. 10 years????? For those who consider swirl a detriment to producing power this is a positive thing. Edelbrock Performer RPM Cylinder Heads - Ford 351C Custom Camshafts, Valvetrain, Valve Springs, Push Rods, Timing Sets www.flowtechinduction.com "Generations above them were never perfect. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Our test heads came with the larger intakes that clearly contributed to these heads' strong showing. This head is intended for a flat-tappet camshaft, so it was outfitted with a small-diameter spring that might have limited its performance in the midrange slightly. Any advice would be greatly appreciated. The winner in this evaluation is almost always the least-expensive head just because of the way the math formula works. I was going to have my reconnecting rods reconditioned with 5/16 arp bolts. Im sorry guys but you somehow missed something there are boss 302s out there cranking out way more than what you guys are claiming. Russell; COMP Cams; TCI Auto; FAST; E-Comm Sales: Sales: 888-799-1135 Tech: 800 . installed the heads on a 1978 460 bored out .060 over went from 500 hp to 551 hp @4900 rpm on a dyno 8/9/19. from United States. Ford Aftermarket. 302/351 X2 Head. Build your own custom newsletter with the content you love from EngineLabs, directly to your inbox, absolutely FREE! After spending an hour on the Edlebrock Tech line we determined the instructions are out of date relative to the current product being delivered of the 5073 head. Im not sure what has happened to Edelbrock, but their quality control sucks. 185 cc Intake. The F code 302-2V was made from 68-73. But for perhaps a majority of enthusiasts, this evaluation may be too simplistic. They cut the center two chambers from three Boss 302 heads then welded them together to form an inline six head that bolted on a 300 block! 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. Whoever invented that crap ought to be shot. (Image/Jim Smart) Although these are 1969-70 BOSS 302 heads, they []. My build is a 306, 9. 1969 Intake - 2.23 inches Exhaust - 1.72 inches. Every time I put a bigger carb on it, it ran faster. True but it seems excessive to me. Experimental Part . This was a simple fix, using a drill press to open up the restrictors before we could use the 1/2-inch ARP head bolts. detroit metro auto parts "302" - craigslist. You may also cruise the online auctions for a vintage 5.0L roller block (F1AZ-6010-B). Ford engineers took the new 351 cylinder head and modified it to work with the Tunnel Port block. I simply cant believe this is all youve got. Pic 3 shows what looks like an area of casting slag that was missed when they were cutting and cleaning out the valve seats and runner. 015 AND THE REST WERE. I was building that garbage in 2nd grade. . I was trying to find a set of heads that will produce 300ish hp. They dropped off after that. WITH THE STIFFER SPRINGS I REALIZED THE PEDESTAL MOUNT ROCKERS WOULD MOST LIKE FAIL SO I MACHINED THE PEDESTAL PADS, DRILLED AND TAPPED AND INSTALLED HELI COILS FOR ROCKER STUDS. Think of Ford as a free-spirited car company with a rich history, driven by ego, that took big risks much as it is doing today with electric vehicles. 546hp @5600 rpm also had 630 ft-lbs torq@ 4400 rpm. We'll squeeze all of this into these few short pages, which means we have a long way to go and a short time to get there. The Twisted Wedge heads also had the strongest horsepower curve above 4,000 rpm of all the heads tested. Purchased a long block on CL. The Ford had slightly less compression, at 10.5:1, so out of the gate, Chevy had a little bit of an advantage.. The 300 and the 240 are identical blocks,the heads are different and the 240 is basically a destroked 300 so it will rev a little higher. These heads are coated with assembly lube out of the box. When you shop through links on our site, we may earn an affiliate commission.
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