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 head bolts used on a Boss 302 were a flanged-style head bolt. I am running them on a 302 and purchased this set for a 351 build. 302/351 X2 Head. I believe C.J. Do 302 cylinder heads increase RPM? [The Boss] cylinder head came about after Fords experience with the tunnel port cylinder head where they learned lots of head flow equals lots of power, Holdener relates. When you do that, you can see that the TFS head did substantially better than all the other heads above about 4,400 rpm. The store will not work correctly in the case when cookies are disabled. Ultimately, the best cylinder head for your Ford 302 will depend on your specific goals and needs. These features improve an engines efficiency, resulting in more horsepower and torque and improved mileage potential. Weve got 302 fords with gt40 3 bar heads making over 500 hp. Im using a fairly mild flat tappet cam, so growing the installed height of the springs by 60 or 70 thousandths woul put both the seat pressure and open pressure weill within specs for a flat tappet cam. It's important to note that this was the only head in our test that required its own separate valvetrain. This is the Head Bolt Torque Sequence (Pattern) for Ford's small block. Single angle amateur valve job and it was pretty sad looking At this point I called edelbrock and they gave me the song and dance so I called Jegs and they issued a return. Combine Edelbrock quality with excellent power and a highly competitive price, and the E-Street Edelbrock heads strike us as an excellent choice. Intake - 2.23 inches 58 cc Chamber. 1-330-630-1555 1-888-841-6556. . It had to sneak the GTO in under the radar of upper management. Exhausts have only a. The Duntov cam that GM used in the DZ 302 had over 250 degrees of duration at .050 [inch]! Holdener explains. The BOSS 302 heads used some of the biggest valves in the industry. This is where you must spend the money. Moving to the Blue Oval, we see that they went with a milder profile. At the time the first heads were done, I think only cast iron were available so they were furnaced brazed.If you sliced them, any shop that repairs heads could do the work. Evidently youre research people are either misinformed, or just dont really care about building anything ford. Age Group: adult. SBF FORD Aluminum Cylinder Heads 302 /351w 190cc 62cc 2.02 /1.60 For ROLLER CAM. very poorly packaged, opened it and there was no screen protection sheet between screen and keyboard. Im sure you had over 400. 1.290 in Spring. It didnt conform to corporate protocol and invented the muscle car in its 1964 GTO. Street 512 Mopar motor in a Dodge Dart . The Twisted Wedge heads also had the strongest horsepower curve above 4,000 rpm of all the heads tested. . These heads are coated with assembly lube out of the box. Don't know what the compression ratio would be with those pistons you mentioned but don't forget the HI-PO 289 produced 271 horses with 10.5 compression. And the reality is, they did, in modified trim the way they were raced in the Trans-Am series. Once I pick the heads I was going to find a good cam for daily driving/ performance. The TFS heads appeared to be the big dog in the room when it came time for testing. They dropped off after that. Said to be "overvalved" for street performance. If you had the right pistons, you could use 351C 2V heads which are cheap and plentiful and don't have the low end port velocity issues 22GT described. These heads are screaming on the 302 I just built and are great quality. The additional space improved the engine's breathing. Batten was at the top of their game then and were welding up and porting the best bow tie heads on the planet back then, besides all the othher stuff. The biggest difference between the two engines is the cylinder heads.. While the tunnel port wasnt a complete success, thats how the Boss heads came to be. The "civilian" Boss 302 engine had a 4 bolt main block with screw-in freeze plugs and a forged steel crank. From new ones to the aluminum headed one I have in my fairlane now. I think the higher RPM one had larger valvesand ports, right? 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. Alum. Better than fighting with iron cylinder heads. I changed the thermostat so it would dump alittle more gas in her no problems so for. Build your own custom newsletter with the content you love from EngineLabs, directly to your inbox, absolutely FREE! The completed head is also wider so push-rod holes need to be cut-out on the block side, then sealed with "o" rings, etc. However, in the upper RPM range, the Boss 302 shows a definite, significant advantage over the DZ 302. Edelbrock aluminum 2V cylinder heads with a mild camshaft upgrade top its stock Boss 302 block, while a Tremec TKO five-speed gearbox sits in place of the factory toploader four-speed. 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. Still have lots of racing Boss and Hipo parts. As you can see from these numbers, the Cleveland-style Boss 302 cylinder heads offer significantly more airflow at each valve opening point over the DZ 302s fuelie heads. So howd they stack up? There is a lot he did to this engine, if you're interested but he kept the orig. Perfect fitment, good quality heads on a budget! . Boss 302 - 1970 Boss. However, way down low, where the big-port Boss 302 motor isnt supposed to work, it made decent low-speed torque. The block is a 1980 302 Winsor. Up top, are a set of Ford Motorsports C302 cylinder heads, which have been worked over by Roush-Yates Racing. 154-3701: SB Ford Boss 302 12pt Head Bolt Kit. The intake valves all have. It would make a nice high rpm engine that was pretty soft on the lower end where you spend the most time. They have cast iron seats and guides (titanium valve compatible) and are set up for studs and guide plates. Fords incredible 1969-70 Trans Am BOSS 302. The Tech was nonchalant about this and stated these are a lower end part. 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. In the 1960s, Ford was an outspoken car company, much as Pontiac Division was within General Motors. Cleveland's Crown Jewel. The spark plugs are also positioned well, and I cant foresee any interference with any headers. We used Comp roller rockers for the remaining heads to level the playing field, but if you are considering a set of these heads, be aware that the rockers and fulcrums need to be considered as well. Ford took on the world with the GT40 supercar. 040 roller short block A little lope at idle but it pulls everywhere in the rpm range. SB Ford WP Man O'War iron block/Man O'War aluminum head Head Bolt Kit. A forum community dedicated to hot rod owners and enthusiasts. Thx. No votes so far! The cylinder head also contains the spark plug and fuel injector(s). Learn how your comment data is processed. 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. Will these heads work well?. Would modifying the heads bring down the value of the heads? This combo has been dynod at 460-ish hp at 5000 rpm and 550 ft lbs of torque at 2000 rpm. The Coyote V8 engine also concurrently debuted in the 2011 Ford F-150. Enter Fords development of an all-new 351ci engine with poly-angle valve heads and tight-fisted wedge heads destined for a 1970 introduction. Experimental Part . 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. I was going to have my reconnecting rods reconditioned with 5/16 arp bolts. Great option. These heads are always perfect, but could use a little bowl work thanks team SUMMIT. Are there any aftermarket heads for it? The cylinder head is an important component of the internal combustion engine in a Ford 302 car. That was a surprise.. Crate Engine, 302 C.I.D. 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! Click to expand. The .10 difference in bore spacing( but the bolt pattern is the same square four as the smallblock) makes me think 3. We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. The finishing order for peak torque realigned slightly, with TFS out front, RHS coming in a strong second, and Edelbrock and Ford tied for third. This educational content is not intended to be a substitute for professional advice. 60 exhaust valves. Aluminum. The real question is, what do these factory motors make, and how do they compare to each other?. 2.02/1.60 in Valves. Pic 2 is a spot next to a water port on the intake surface where it looks like the facing tool tilted some. A forum community dedicated to vintage Ford Mustang owners and enthusiasts. The best aluminum heads for 302, without a doubt, have an effect on the vehicle's RPM. You will need the boss piston to go with the canted valves.. No. The DZ 302 used a 1.5:0 ratio, while the Boss 302 head used a larger 1.72:1 ratio. While it only had .480-inch of lift, that duration would really allow the RPM to climb. i knew a guy that put a set on his 65 shelby. Have a 70 351 4v stored 25 yrs 50 k miles complete minus carb dist has manifolds 1800. never lube the seal lip ? 1 on Pg 2 instructs the used to drill 3 holes if a 400 block is used. 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. The advantage was better flow because the intake was on one side and the exhaust was on the other. 500 max! Parts made from tooling for the cancelled 1971 BOSS 302 were used for service. I SENT THEM RIGHT BACK. The 363 uses FRPP Z2 cylinder heads. The compression ratio increase is approximately 3/10 of a percent with each 1/8 stroke. I figured the Boss would make peak power. I expected cleanup, but not like this. Recently, we posted an article in which Richard Holdener dyno tested the five-liter powerhouses put out by the Blue Oval and the General in the 1980s. "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. As far as I'm aware you only choice for factory heads in the Boss 302. Intake - 2.19 inches The cam featured 290 degrees duration and .477 in (12.1 mm) of lift. Was running 850 dbl pump Holley with 4:56 gears, and I was running 12:20s at over 112 mph in the quarter. instead of 50 oz. Aluminum will allow you 1pt up in compression for its ability to shed heat. Australian car enthusiast with 30 years experience in the high performance industry. 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. It took about 500 honest HP to break into the 11s with a little bit heavier car than your mustang. This engine was built in the 80s by someone with way to much money. I was wondering how these heads would work on my 97 5. Don't know if it's still good. Best heads for the price. Aluminum. I thought the bolt pattern was the same, that is what helped to make the swap work. 18 Ft/Lbs - Aluminum Heads. Be the first to rate this post. The most notable thing about the Flo-Tek heads available through Speedway Motors is the pricethat's $739.98 for a complete, ready-to-bolt-on pair of aluminum heads for a small-block Ford. Not the 2012-13 Coyote DOHC BOSS, but instead the genuine pushrod original from an era when Ford did the unthinkable repeatedlyand won! It used to be listed in the FRRP catalog. Edelbrock E-Street cylinder heads are just the ticket. The supply chain issues are eliminating a lot of choices. Needless to say the head kicked ***. Other than this the heads flow nicely on the street. 030 AND 2 OF THEM WERE. World contributed the lone cast-iron head to our Ford small-block test. I have tried most all of it and now do what is known to work.. Well, this may be old info, since the warning tells me that the last post for this discussion occurred >100 days ago. What I got was good, but the quality control person should not have let these go out the way they are. Ford had and did a great job with Ford Motorsports programs which we were in . There is no flat spot and these engines will pull from 2000 against any rival including a Windsor. I think Im in love, lol!!. Ford Racing's Z heads (PN M-6049-Z304DA, 63cc chamber, 2.02-inch intake valve, $1,695) are the next step in bolt-on performance castings for small-block Ford engines that see street and on-track . This one appeared great at first use and for a couple of months. disappointed discovering this situation. 154-3607: SB Ford 289-302 standard 12pt Head Bolt Kit. The only caveat to all this is that the Twisted Wedge heads do limit valve lift (0.600 inch) and duration on stock pistons due to their repositioned intake valvejust so you know. Needless to say they began to really spank everybody and by the end of the season the six cylinders were out ruled. 370 HP Dressed Long Block Crate Engines BP3027CTC Crate Engine, Base Long Block, Aluminum Cylinder Heads, Roller Camshaft, 600 cfm Carburetor, Ford, 5.0L/302, Each Part Number: MLL-BP3027CTC Not Yet Reviewed Estimated Ship Date: Today Free Shipping $6,519.00 Add To Cart Compare Wish List Your email address will not be published. (Image/Jim Smart) Although these are 1969-70 BOSS 302 heads, they []. Not true! 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. stud-mounted roller rockers as the current Ford Racing 429 Cobra Jet heads, and the standard Cobra Jet intake and exhaust manifolds bolt right on. IF YOU DO THIS BE SURE TO USE PERMATEX #2 ON THE INTAKE STUDS. 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. 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. refresh the page. I would guess Im somewhere around 375HP @ the flywheel in this build. Brand New. The combustion chambers are filled with a 2.150-inch, 7mm-stem titanium intake valve, and a 1.60-inch, 7mm-stem titanium exhaust valve. The BOSS 302's biggest shortcoming is port sizing, which is something Ford has rarely been able to get right. I personally dont think a prospective buyer should have to learn about this issue by reading reviews. We got our answer. On episode 19 of Engine Masters, David Freiburger explains cam lift, duration, lobe separation angle, and installed centerline. For the 1968 Trans Am season, Ford took the 302 cubic inch Tunnel Port out there in search of victory. I personally know several guys with Boss 302s that have been secretly stroked to 347. They topped a 302 Windsor with the Cleveland -style heads, making the first Clevor. Edelbrock E-Street cylinder heads are just the ticket. Not sure about the 5089. I have used them for over 35 years and never seen something like this. It should be in the product description and specs. The connecting rods and crankshaft are made of forged steel, and the heads are aluminum with roller rocker arms. They pull much harder through the midrange than the 351W heads they replaced on my 302 Ford. It was rated at 10.5:1 compression and 230 bhp (Shelby was rated at 250). Small Block Ford. Greg has spent eighteen years and counting in automotive publishing, with most of his work having a very technical focus. Our FDC has over 150 racing members and FORD promised us Hubert Platts Drag Mustang after series which disappeared. Our test heads came with the larger intakes that clearly contributed to these heads' strong showing. To complete the Boss, we added an Edelbrock Performer RPM intake, a Holley 750-cfm, mechanical-secondary HP carb, MSD distributor, and a set of open dyno exhaust headers, and we were ready to rumble. When the vacuum is high, the intake is sucking oil through the valves. Seems to me that if you get the right kit (ie correct wrist pin centering, rod length, etc), you should have no problem.. aliases: Bossssssman, bosscars, old fart, chat dawg, hey you. The factory 780cfm carburetors are really, really expensive, and we didnt want to spend a few thousand dollars on a carburetor, explains Holdener. I have a Eldabrock Performer intake,msd distributor and 6al box and a 61mm bbk throttle body. I recommend purchasing ARP studs and guideplates for perfect rocker alignment. $ 5,595.00 Learn More. Autozone has a great price on these heads. Its useful for when you have a tight engine compartment and headers in a Falcon. I used them with a Comp Cams 274XE cam and a QFT 600cfm carb. This new design offers a 25-50 HP increase over current Cobra Jet heads, depending upon displacement and camshaft. 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. Cheaper than some rebuilds. The 68 F code had 10:1 compression and made 210 bhp. If we've muddied the waters a bit, it's only the result delivering more information on the way to a decision. $1,692.99. Are you looking for a set of entry-level street performance heads for your modern street rod, musclecar, or truck? The rocker studs are 7/16, not 3/8. For use only with Special heads . Im just hoping the new Edelbrock intake that arrived yesterday is better than these. Wait 1.6 rockers? Feb 19, 2016. Currently working on a 1970 Mach 1 project. You wont find heads of this quality at a better price anywhere. THE NEXT ISSUE WAS VALVE SPRING INSTALL HEIGHT. Speedway and Try-State Cylinder heads both stand behind this product. Batten cyl heads was instrumental in developing the high port exhaust for the Dyno Dons and Bob G's and Jack Roushes. We should also mention that although we didn't test a stock iron casting, it should be clear that even the heads on the lower end of our test would still be an improvement over stock factory castings. Even the stock cam should peek higher than 5500 rpm. I understand why now they are so much more money! The BOSS head was functionally identical to the 351C 4V head. I was actually pleasantly surprised at the swirl polished valves and the large spring pockets for if you want to run larger springs with a monster cam! it still has the vista 7 sticker on the palm rest area. Tech-Sheet. 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. Cast aluminum block and heads: Intake Manifold: Composite Boss 302 Specific with shell-welded and runner pack: Exhaust Manifold: Tubular . The Edelbrock Flathead Cylinder Head is made of A356 aluminum T-6 tempered cylinder head. 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. Turbo 300-inch Ford can bang off 10.90s at 120 mph. 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. Other than that it was OK. 02 intake/1. 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 honestly a guess on my part and the Tech had no additional information or opinion to offer. That would probably have been the only intake available to work , at that time. For a better experience, please enable JavaScript in your browser before proceeding. You are better off buying model 5023 with 1. Ford 260-289-302 Firing Order; Ford 351C 351M 400M Firing Order; Ford FE Firing Order; Ford 429 and 460 Firing Order; Chevy SB and BB Firing Order; 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. The BOSS 302 heads are known as "Cleveland style" heads as they are based on the head designed for the 351 Cleveland engine. Having a hard time finding Boss 302 Heads online? legend . 1969 Intake - 2.23 inches Exhaust - 1.72 inches. Thanks to all who helped us get here. Great bang for your buck with these heads. Ford has always been a car company that dared to go where no automaker had ever gone before. Next, we test a low-rpm cam and a high-rpm cam in the same engine to demonstrate the power differences. The Ford head uses a net-lash design that makes the valvetrain non-adjustable. All Edelbrock E-Street cylinder heads are assembled with manganese bronze valve guides, powder metal interlocking valve seats, and stainless steel one-piece valves with hardened valve tips. 22-25 Ft/Lbs - Iron Heads. When we tore apart the first head it was full of shavings and one of intake valves was super tight and one of the exhaust valves was bent w/. Before jumping right into the dyno numbers, we need to look at the engines backgrounds to truly understand why they were built, and why they are so equal. Stroking an engine is not going to reduce your engine rpm. A forum community dedicated to vintage Ford Mustang owners and enthusiasts. Edelbrock 5025: Cylinder Heads, E-Street, Aluminum, Assembled, 60cc Chamber, 170cc Intake Runner, Ford, 289, 302, 351W, Pair Are you looking for a set of entry-level street performance heads for your modern street rod, muscle car, or truck? I am building a budget 440 RV motor that should be a monster street tire smoker for under $3000. they mandated a 5.0-liter displacement limit. For high-performance's street and competition, our dual-plane design makes outstanding power from 1500 to 6500 rpm. it boots up ok but not as fast as my other i5 laptop. Ford New Boss 302 w/351C HDS Hex Head Stud Kit. You have to rev it to the moon to really make any power. There are plenty of them lying around used and new-old-stock. 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. This page last updated: February 3, 2022. 1.90/1.60 in Valves. LOOKS AND PERFORMED GREAT. No stick hole up top. But for the rest of us, choosing a cylinder head might be a complex algorithm of price, power, brand loyalty, ease of installation, head bolt size, and maybe even shoe size if you're that compulsive. And torque is what gets the car moving from a stop, pushing you back in the seat. Finding a Street Boss intake likely wouldn't be too difficult as multiple manufacturers have cranked them out over the years. The GT-40 cylinder head was produced in cast iron and aluminum, available from Ford Motorsport SVO and Ford Racing. . These are perfect for their intended use, the street. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. This minor tune-up would really improve the flow curve and add a measurable amount of torque. However, its always fun to think about building one or even erecting one from scratch, which you can do with a Ford Performance BOSS block (M-6010-BOSS302) and Cleveland heads. Like with standard 4V heads, you would have to machine the tops of the heads to accept screw-in, adjustable rocker studs. Every time I put a bigger carb on it, it ran faster. There was dust and paper bits all over the keyboard and screen!! 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. These aluminum heads are assembled with the perfect match of components for outstanding, trouble-free performance. The Good and Bad of the head bolts on the SBF is that their are only 8 of them. Although we thought that the previous 302 Windsor vs 305 TPI was a pretty fair test of two era-and market-specific competitors, this has to be the ultimate level-playing-field. The Ford is specd out at 228 degrees at .050-inch lift, but lift was a different matter. No drilling is required since it appears they updated the manufacturing process to eliminate this need. Its not a good time to be building a performance engine. we all have our shortcomings. Sold individually. Ive had several other brands, but HP has been the best. The Dart castings would have been the Iron Eagle versions, and the Pro Comps are affordable in aluminum.

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