Dimensions in Inches (LxWxH): 24.1 x 24.1 x 8.7. . 351 cleveland heads on a 302 | Hot Rod Forum 3/1 . But there is absolutely something else wrong. Intake - 2.23 inches Ford Boss 302 engine - Wikipedia Boss 302s did indeed have 1.73 ratio rockers from the factory. There are many different types of cylinder heads for Ford 302 engines, so it is difficult to make a definitive conclusion about them. 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. 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. Have a 70 351 4v stored 25 yrs 50 k miles complete minus carb dist has manifolds 1800. never lube the seal lip ? 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. NOS 1969 1970 Mustang Boss 302 speedometer. These aluminum heads are assembled with the perfect match of components for outstanding, trouble-free performance. 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. 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. Budget iron can run $1195.00 for an easy 500 + hp but any more needs more valve area. Yes you can bolt the 351C heads to a 289/302/351W block. 98 sold Small Block Ford. 2Pcs Straight Aluminum Bare Cylinder Head Compatible with Chevy Small Above you see a casting with a D1ZE part number. The heads also required custom-length Comp Cams pushrods to compensate for the relocated valves. Though that's significant, this is only reflective of a single point in the curve; it is more important to evaluate the entire length of this horsepower graph. What? 0:1 on blocks with a 3/16 base relief (stock bore and stroke). DART . Especially for the price, I would buy them again in a heartbeat. 9 intake valves since they bolt on easy with no modification necessary. I expected cleanup, but not like this. You MUST flycut the valve reliefs on the pistons larger if using stock pistons. They are very capable iron heads. The intake valves all have. My first work Dell was super slow and sluggish, so I was sent a new one. You might even be able to get some rejects since you'd be cutting them up and remaching anyway. In 1970 the Boss 302 was a Camaro killer, it could go 0-60 mph in 6.0 seconds. Are you looking for a set of entry-level street performance heads for your modern street rod, musclecar, or truck? 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. The DZ 302 in the Z/28 was a natural marketplace competitor to the Boss 302 from Ford. I bought an external mouse/keyboard because the distance from the keyboard and mouse to the edge of the laptop are a bit far for my small hands. 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? Needless to say they began to really spank everybody and by the end of the season the six cylinders were out ruled. The 69 and 70 F code 302's are rated at 220 bhp. We did this to expand the scale to show the differences in power near peak horsepower. I KNOW FROM EXPERIENCE. Actually, everything about these heads helps the little 302. 64cc Volume. Other than this the heads flow nicely on the street. from United States. Pair. That's what the TFS Twisted Wedge heads did here. We certainly don't want to ignore the peak numbers, and that's where the TFS Twisted Wedge heads really earned the spotlight. They will outperform many of the average aluminum heads. So the induction system is kind of a toss-up. Due to the larger Cleveland-style heads, the Boss 302 weighs somewhat more than the normal 302, tipping the scales at 500 lbs. The holes are just big enough for the spark plug socket, which guides it in perfectly. they mandated a 5.0-liter displacement limit. http://fordsix.com/forum/viewtopic.php?t=33048, 1971 Ford Maverick - Budget 10-Second Turbocharged Maverick Coupe - Car Craft Magazine. sbf 302 aluminum cylinder heads. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. 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. Boss 302 heads on a 289 | Vintage Mustang Forums I would suggest pulling the vavles and wiping everything down. Typical rebuild, headers, Competition solid lifter cam, 1.73 Crane roller rockers. In my 70 years of fooling with cars, we always had a formula. 6 Budget Small-Block Ford Cylinder Heads That Work - MotorTrend (BOSS) These ford flathead cylinder heads feature original edelbrock script logo design for fords and mercurys. The results of this test didnt really surprise me, except for one thing, reveals Holdener. Great bang for your buck with these heads. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Condition does not matter! Cleveland's Crown Jewel. Guys if you want to make serious power. The Cleveland style head featured a staggered, canted valve arrangement. These heads have the right size valve for those piston. Edelbrock E-Street cylinder heads are ideal for entry level street performance engines. After a couple of good seasons of running competitively with the big blocks a couple of guys showed up with a custom head that consisted of two V-8 Ford heads that had a combustion chamber removed from each end and were furnace bronzed together in the middle. The 68 F code had 10:1 compression and made 210 bhp. If it is, then you know what you need to do. But, I just came across this website and happened to ask about B. Sizemor's 6. 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. My first ever computer was an HP Pavilion PC, and theyve always been my favorite brand since then. . I would however like to be able to buy a set of heads and not have to go through them like I had to with these. Camshafts were quite similar to the 289 HP. This makes it easy to torque and lower cost for better aftermaket bolts and studs. Im not sure what has happened to Edelbrock, but their quality control sucks. The BOSS 302 heads used some of the biggest valves in the industry. Cylinder Head. I think the higher RPM one had larger valvesand ports, right? Try the DZ 302 and see what happens! many cried in the various comments sections, to which the Ford faithful replied, Maybe against a BOSS 302! Well, Holdener was reading those comments, just like we were. Cast aluminum block and heads: Intake Manifold: Composite Boss 302 Specific with shell-welded and runner pack: Exhaust Manifold: Tubular . All Cleveland style heads including the BOSS has 1.73 to 1 ratio rockers. I passed over a different set of heads at the recommendation of my machinist. 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 . Bought these and compared to the other (PC). SB Ford Aluminum - Bill Mitchell Products stock rebuild,. Edelbrock 5093: Cylinder Heads, E-Street, Aluminum, Assembled, 84cc Chamber, 210cc Intake Runner, Mopar, Big Block, Pair Are you looking for a set of entry-level street performance heads for your modern street rod, muscle car, or truck? Whoever invented that crap ought to be shot. Your email address will not be published. For Use w/289/302/351 Windsor-Style Engines. SB Ford WP Man O'War iron block/Man O'War aluminum head Head Bolt Kit. The Boss used a mild camshaft, mild compression, and lots of head flow, Holdener says. Also, the visual aesthetic is pretty plain, and the laptop doesnt have a sleek feel to it. The BOSS 302's biggest shortcoming is port sizing, which is something Ford has rarely been able to get right. They are Worth it. Meaning, their AQL is very low. SBF Pro1 20 170cc Heads - Dart Machinery Also; I had Carroll Shelby/SAAC racing program in several other FORD dealerships . When you purchase through links on our site, we may earn an affiliate commission, which supports our community. There is a lot he did to this engine, if you're interested but he kept the orig. I have used them for over 35 years and never seen something like this. instead of 50 oz. That made for an incredibly close series of tests, which proved that regardless of how you get your displacement, similar displacement engines will make similar power and respond similarly to modifications. Cheap Aftermarket Heads | 460 Ford Forum Comparing the cylinder heads on paper, using data collected by Holdener for a previous article, the Boss heads clearly come out ahead. Both these motors were factory-rated at the same 290 horsepower, but that number is suspect, says Holdener. 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. 1.73:1 rockers, 522 lift 292 duration nets 420 HP at 6300. Remember this correction adjustment is approximate and is only meant to get you close for the initial start up of the engine. Learn how your comment data is processed. Thesecret to a long life stroker is to add wieght to the crank so you can exterally balance @ 28 oz. 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. The 300 block may have a slightly taller deck height than the 240. writing. This one appeared great at first use and for a couple of months. Cylinder heads casting ID decode for 260 289 302 351 390 406 427 428 429 460FE Boss Shelby. I was building that garbage in 2nd grade. A recent test of a prototype set of Hammerhead's castings bolted on a 427ci small-block stroker produced over 600 hp with a streetable hydraulic roller camshaft and 600 lb-ft of torque. 1.90/1.60 in Valves. JavaScript is disabled. You are better off buying model 5023 with 1. If youre using stock pistons, get the version of these heads with the smaller intake valves (Part #5023). FLO-TEK Performance cylinder heads feature as-cast ports and are designed for entry-level street performance applications operating in the idle-to-5500 rpm range. No mention of those holes in the instructions. 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. 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! However, there are a few notable differences between the Coyote in the F-150 and the Coyote in the Mustang. There is no flat spot and these engines will pull from 2000 against any rival including a Windsor. Experimental Boss 302 style heads . What I have found out so far, the engine runs. The heads were to big for a 351CLEVELAND. Today, the aftermarket lineup of Ford cylinder heads has plenty of castings from which to choose. The supply chain issues are eliminating a lot of choices. The heads are a direct replacement for previous Twisted Wedge heads and work with all Twisted Wedge specific pistons. Max effort class rule stuff runs over $2K. Once I pick the heads I was going to find a good cam for daily driving/ performance. For use on pre-pollution controlled vehicles only. The "civilian" Boss 302 engine had a 4 bolt main block with screw-in freeze plugs and a forged steel crank. Ford engineers took the new 351 cylinder head and modified it to work with the Tunnel Port block. Does any 351 Cleveland head fit it? Best 302 Heads - Our Top 5 Selection from 99+ Models . AFR - Airflow . 8:1 compression, TFS Stage 1 hydraulic roller cam, 1 5/8 headers, Summit Stage 1 dual plane intake, Edelbrock 650 AVS carb. Boss 302 is a Windsor engine; uses Windsor cam lobe profile & 1.6 Windsor rockers. The compression ratio increase is approximately 3/10 of a percent with each 1/8 stroke. Parts made from tooling for the cancelled 1971 BOSS 302 were used for service. 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. GT40 heads use 1.84 intake / 1.54 exhaust. How can you call it racing if you're putting the brakes on before the finish line? As far as I'm aware you only choice for factory heads in the Boss 302. Speedway and Try-State Cylinder heads both stand behind this product. The Good and Bad of the head bolts on the SBF is that their are only 8 of them. But it should be noted that Ak Miller built a '67 Mustang at about the same year and created a 300 out of a 240 ( for the younger ones a 300 used to be a truck engine and the smaller 240 was used in the cars,LOL) with a set of Webers and bigger valves and cam, it turned in the twelves, that's in the late 60s. 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. 030 shim. 60 exhaust valves. 1970 - D0ZE-6090-A or B. Ah now Plummer - it's not a secret if you post it on VMF! Works with most standard components. The heads offered an excellent midrange power curve, behind only the Twisted Wedge casting between 4,000 and 5,500 rpm. I think it was Bruce Sizemore that ran an H/MP Maverick that held the class record for a while during the 70s. I figured the Boss would make peak power. Other than that it was OK. 500 max! 22-25 Ft/Lbs - Iron Heads. 045. Very limited suppliers of flathead parts always look to speedway for my hotrod items. 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. Small block Ford PRO1 20 170cc Aluminum cylinder heads feature high flowing as cast ports with profiled valve guide bosses and are bowl blended on 5-axis CNC machining centers. which will help take the wait off the rear main bearing. Was running 850 dbl pump Holley with 4:56 gears, and I was running 12:20s at over 112 mph in the quarter. Come join the discussion about restoration, modifications, NOS parts, troubleshooting, VIN codes, and more! Peak power was good, at 349 hp, and torque is also reasonable. I simply cant believe this is all youve got. View Details. I was going to have my reconnecting rods reconditioned with 5/16 arp bolts. Is it the 69 or 70 Boss 302 head that's more streetable? The advantage was better flow because the intake was on one side and the exhaust was on the other. I understand why now they are so much more money! Because they didnt allow destroking [of an existing engine design] initially, both companies had to build actual displacements of five liters, explains Holdener. The 1968 Trans Am season was a disaster. Batten of Romulus, Mich who did the furnance-blazed heads. Siding Contractors & Companies in Hohenthann - Houzz It was honestly a guess on my part and the Tech had no additional information or opinion to offer. A stock 1970 Boss 302-spec solid, flat-tappet cam was used and offered a tad over .500-inch lift and 228 degrees of duration at 0.050. So get comfortable, slip on your Ford-colored glasses, and hang on. The Boss 302 takes the Mustang GT's suspension and adds higher-rate coil springs, stiffer bushings, and a larger diameter rear stabilizer bar. Finding a Street Boss intake likely wouldn't be too difficult as multiple manufacturers have cranked them out over the years. Would modifying the heads bring down the value of the heads? Renegade Street. The stroke difference between the two engines amounted . 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. Edelbrock E-Street cylinder heads are just the ticket. Opens in a new window or tab. The BOSS 302 Registry is not affiliated with the Ford Motor Company. Bolt-On Hemispherical Heads for a Small-Block Ford - Street Muscle The drag strip in my area doesn't have any classes. Whenever youre running a flat tappet cam, always use a zinc additive, Building Classic Ford 351 Cleveland Power. Semi or Farm tractor repair shops would probably have the location of one near you.Now, with all the Aluminum small block head available, you could create a real bad 6. Perfect fitment, good quality heads on a budget! Stroke that thing. We started FORD Drag Club at Horn-Williams Ford in Dallas,Tx. They feature high-flow ports and steel alloy intake and exhaust valve seats installed (they do require a competition valve job and bowl blending). 1.290 in Spring. For high-performance's street and competition, our dual-plane design makes outstanding power from 1500 to 6500 rpm. Not true! I first installed an oil trap in the PVC thinking something went wrong with the piston rings. Any advice would be greatly appreciated. Twisted Wedge and Canted valve (TFS and C302b) in aluminum promote even better performance. 1970 Fastback (to be finished outside as a Boss 302 tribute), thanks for all the responces! Edelbrock heads are available in two different versions, with either 1.94- or 2.02-inch intake valves. Hammerhead Performance Ford hemi-style heads | Rare Car Network Cross Boss 302 Mustang off highway use. Bolts in anywhere a 302 will go with the right headers and pan. Chevy used higher compression and lots of camshaft, combined with mild cylinder heads. saving. They topped a 302 Windsor with the Cleveland -style heads, making the first Clevor. The less you know the more you need vacuum secondarys. It came with aluminum heads that were way too big for the cam and my use. 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. Its main function is to seal the combustion chamber and provide a surface for the intake and exhaust valves. They dropped off after that. $1,692.99. D. Hearne is on the money as usual. for use w/ Special Intake. The Ford head uses a net-lash design that makes the valvetrain non-adjustable. refresh the page. 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. Back in the day, there was all kinds of speculation that they made more than 400 horsepower. Flat cylinder heads have large water capacity and excellent breathing characteristics. A tad shorter then a 351W but a little wider due to the size of the heads. It will have screw-in core plugs and a four-bolt main block if it is a Boss 302. The modern combustion chamber designs improve the combustion process and larger than stock intake and exhaust ports move more air through your engine for improve efficiency. 300 HP wouldn't be far off. 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. This is where you must spend the money. On episode 19 of Engine Masters, David Freiburger explains cam lift, duration, lobe separation angle, and installed centerline. As I recall from articles way back, this is an expensive process. What heads can you put on a Boss 302 block? - Vintage Mustang Forums For the Boss 351, the entire Cleveland engine was used instead of simply the heads. No problem coming off corners at low rpm in higher gears and the pull in the higher gears on top is amazing for what I paid for them. 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. These are perfect for a street build and the price is outstanding!!. Aluminum. The 4-bolt caps can be seen here. But when I received them the box was almost completely destroyed and when I took them out of the box 2 valve springs and retainers were off the stud and loose in the box. Be the first to rate this post. Purchased a long block on CL. but thesell work on a large engine and flow, too. A borescope down the intake revealed lots of oil in the intake runners near the valves. Greg has spent eighteen years and counting in automotive publishing, with most of his work having a very technical focus. I changed the thermostat so it would dump alittle more gas in her no problems so for. Revised cooling system passageways Siamese bore with drilled coolant crossover holes (Except on M-6010-B302BB ) Increased bulkhead material The Edelbrock heads showed a little weakness in the midrange, something that could probably be rectified by adding a 30-degree back-cut to the intake valve. 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. He stated he spent over $10,000 back then. Renegade Street. But as others have mentioned there are modifications that must be done to make it work. Said to be "overvalved" for street performance.