These heads have the right size valve for those piston. The head bolts used on a Boss 302 were a flanged-style head bolt. 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. Im just hoping the new Edelbrock intake that arrived yesterday is better than these. 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! Also; I had Carroll Shelby/SAAC racing program in several other FORD dealerships . There is a lot he did to this engine, if you're interested but he kept the orig. Help keep from being nose heavy. 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. Ford has always been a car company that dared to go where no automaker had ever gone before. 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. Have a 70 351 4v stored 25 yrs 50 k miles complete minus carb dist has manifolds 1800. never lube the seal lip ? And really, its a difference in the philosophy behind these two motors. Im not sure what has happened to Edelbrock, but their quality control sucks. As with our small-block Chevy head test, we will evaluate each of these small-block Ford cylinder heads using several different categories in addition to peak torque and horsepower. More than 400 horses easy. very poorly packaged, opened it and there was no screen protection sheet between screen and keyboard. http://fordsix.com/forum/viewtopic.php?t=33048, 1971 Ford Maverick - Budget 10-Second Turbocharged Maverick Coupe - Car Craft Magazine. Cylinder heads casting ID decode for 260 289 302 351 390 406 427 428 429 460FE Boss Shelby. This has been done and is generally called a Clevor (using Cleveland heads on a SBF). This is the Head Bolt Torque Sequence (Pattern) for Ford's small block. Why would you build a 302. Are there any aftermarket heads for it? which de-stroked it. All Cleveland style heads including the BOSS has 1.73 to 1 ratio rockers. This is where you must spend the money. Brand New. The Fora platform includes forum software by XenForo. Valve stem heights all the same, decent springs, work fine for my rolller cam, good fit and finish. I am presently installing a 302 clevor into a 83 mustang GT. The cylinder head is bolted to the engine block and sits above the pistons. It collects next to nothing. It will have screw-in core plugs and a four-bolt main block if it is a Boss 302. Buy It Now +C $186.98 shipping estimate. 340 HP Boss, Long Block, Assembled, Internal Balance, Aluminum Cylinder Heads, Ford, Small Block Windsor, Each Part Number: FMS-M6007X2302E ( 1 ) Free Shipping Special Order $10,649.99 Not Available At This Time This product cannot be ordered at this time. It was what the SCCA mandated for street homologation. The DZ 302 used a 1.5:0 ratio, while the Boss 302 head used a larger 1.72:1 ratio. This is my first engine build, let me know if Im doing it all wrong. Russell; COMP Cams; TCI Auto; FAST; E-Comm Sales: Sales: 888-799-1135 Tech: 800 . Ford New Boss 302 w/351C HDS Hex Head Stud Kit. You will need the boss piston to go with the canted valves.. No. Its main function is to seal the combustion chamber and provide a surface for the intake and exhaust valves. Boss 302. Boss 302 - 1970 Boss. Today, the aftermarket lineup of Ford cylinder heads has plenty of castings from which to choose. Works with most standard components. Intake - 2.19 inches 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. extreme amount of burrs left all around the rocker shaft mounting pads. 2. 1.90/1.60 in Valves. For Use w/289/302/351 Windsor-Style Engines. 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. Batten cyl heads was instrumental in developing the high port exhaust for the Dyno Dons and Bob G's and Jack Roushes. However, this time it boasted 412 Horsepower and 390 lb-ft Torque! 1970 Fastback (to be finished outside as a Boss 302 tribute), thanks for all the responces! Autozone has a great price on these heads. There is no flat spot and these engines will pull from 2000 against any rival including a Windsor. Comparing the cylinder heads on paper, using data collected by Holdener for a previous article, the Boss heads clearly come out ahead. The heads also required custom-length Comp Cams pushrods to compensate for the relocated valves. While the tunnel port wasnt a complete success, thats how the Boss heads came to be. JavaScript is disabled. Search 6 Hohenthann siding contractors & companies to find the best exterior and siding contractor for your project. The heads are awesome and fit great! Ford's 302 crate engines use Boss 302 iron blocks. The block is a 1980 302 Winsor. 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. Both companies decided to develop a 302 combination via the previously mentioned four-inch bore and three-inch stroke. This is my first engine build, let me know if Im doing it all wrong. The 300 block may have a slightly taller deck height than the 240. . The runners are as cast and a bit rough. 3/1 . The RHS headsproduced the next-closest average horsepower and torque, with the Edelbrock and Ford heads very close behind. 300 HP wouldn't be far off. I figured the Boss would make peak power. I understand why now they are so much more money! Other than this the heads flow nicely on the street. Ford had and did a great job with Ford Motorsports programs which we were in . All rights reserved. The GT-40 cylinder head was produced in cast iron and aluminum, available from Ford Motorsport SVO and Ford Racing. Since the Windsor block was already a thing, the Blue Oval team decided to fit a set of Cleveland style heads to the short-block and create the Boss 302. Roush? When I set the carb I get a bouncing vacum needle at idle, Ive been told thats a sign of a sticking valve. It had to sneak the GTO in under the radar of upper management. Top Rated Seller Top Rated Seller. Wait 1.6 rockers? There are still 6 other steam holes not present in the 5073 head that are in the 350 block circa 1972. My first work Dell was super slow and sluggish, so I was sent a new one. 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. This combo has been dynod at 460-ish hp at 5000 rpm and 550 ft lbs of torque at 2000 rpm. They topped a 302 Windsor with the Cleveland -style heads, making the first Clevor. Won't work with the 289 stroke. Does anyone remember the six cylinder heads they made for Bruce Sizemore. The Boss 302 and 351C-4V head casting are the same except for a minor difference in water passages. Prices listed are from the story's original publish date, February 1, 2013. the engine was called a "boss 289" not a clevor, a clevor was a 351W with 351C heads and a custom intake. Yates? Back in the day, there was all kinds of speculation that they made more than 400 horsepower. The intake ports flow 382 cfm at .750-inch of lift. We will safeguard your e-mail and only send content you request. 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. 8l F250hd efi roller engine? To conceive the BOSS 302, Ford had to develop a special forged piston with a significant dome that would reach deep into the 351C heads 64 67cc chambers. Ever wonder what those camshaft specification numbers really mean and how they affect engine performance? Save my name, email, and website in this browser for the next time I comment. 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. in 1969 with Doug Durham and me ,TED FORDMAN EHRHARDT who took a new Boss 302 short block apart and checked all specs. The Edelbrock Flathead Cylinder Head is made of A356 aluminum T-6 tempered cylinder head. The Ford is specd out at 228 degrees at .050-inch lift, but lift was a different matter. 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 cam featured 290 degrees duration and .477 in (12.1 mm) of lift. It didnt conform to corporate protocol and invented the muscle car in its 1964 GTO. Flashing in ports was unacceptable. Valves 2.02 / 1.55" . Im trying to leave this pretty much as is, until I get a few good drives in. Still have lots of racing Boss and Hipo parts. JavaScript is disabled. For what the (complete) Boss heads and a intake will run seems you would be better off just going with a good set of after market heads. Peak power numbers are always fun to throw around, but car-crafters are also very astute at determining what all that power will cost. The less you know the more you need vacuum secondarys. So get comfortable, slip on your Ford-colored glasses, and hang on. Hate to tell you this but a BOSS 302 has Cleveland type heads. I HAD TO CHANGE OUT THE SPRINGS FOR ONES WITH MORE PRESSURE DUE TO VALVE FLOAT AND I AM ONLY RUNNING AN E303 CAM. Small Block Ford. Its not a good time to be building a performance engine. It was the most expensive of all the heads we tested. The BOSS 302 heads are known as "Cleveland style" heads as they are based on the head designed for the 351 Cleveland engine. And you'd have to replace the factory two-piece valves which are known to come apart randomly for no reason. Greg has spent eighteen years and counting in automotive publishing, with most of his work having a very technical focus. the second head had not been full deburred from the milling process. Not too much carb for this engine. The holes are also there in a 350 block and Felpro gasket as well as the 5073 head. The Fora platform includes forum software by XenForo. It was 351C heads, 3 of them, cut up into 6 pieces, then furnanced blazed. BOSS Cars Nationals 2005 - BOSS Cars Reunited. Will these heads work well?. 125 of gap at the front and rear ends and you are running a blower or a turbo then I would suggest making some spacers to take up the gap on the ends because anything over. Not to mention the 50lbs you lose off the front. Stroking an engine is not going to reduce your engine rpm. A forum community dedicated to vintage Ford Mustang owners and enthusiasts. The rocker studs are 7/16, not 3/8. They feature high-flow ports and steel alloy intake and exhaust valve seats installed (they do require a competition valve job and bowl blending). you could also get a 302 crank and rods with custom pistons, a 302 crank with 289 length con rods and off the shelf b2 pistons. See all 22 photos. 45 degree spark plug wires work great with these heads. The 170/200/25 are the same block design, with the 250 having a taller deck height (so you can't easily make a 250 from a 200). The heads alone are excellent fit and quality. BluePrint Engines HP9009: Cylinder Head, Assembled, Aluminum, 60cc Combustion Chamber, Square Port, Ford, 289, 302, 351, Stud Mount, Each Welcome to a new class of high performance cylinder headsBluePrint Muscle Series! [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. Im extremely disappointed in this blog.. 10 years????? However, there are a few notable differences between the Coyote in the F-150 and the Coyote in the Mustang. Absolutely no complaints, tons of flow and tons of fun. This minor tune-up would really improve the flow curve and add a measurable amount of torque. Parts made from tooling for the cancelled 1971 BOSS 302 were used for service. 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. First of all. searching. Moving to the Blue Oval, we see that they went with a milder profile. Exhaust - 1.72 inches. 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. 154-3607: SB Ford 289-302 standard 12pt Head Bolt Kit. Though the average power was down compared to the TFS, RHS, and Edelbrock heads, the power is still acceptable, especially if you are more interested in getting a nice pair of aluminum heads than ultimate power. True but it seems excessive to me. It was rated at 10.5:1 compression and 230 bhp (Shelby was rated at 250). Even the stock cam should peek higher than 5500 rpm. After idling for a couple of minutes the engine will start smoking horribly. 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 . See the top reviewed local exterior and siding contractors in Hohenthann, Bavaria, Germany on Houzz. I changed the thermostat so it would dump alittle more gas in her no problems so for. it still has the vista 7 sticker on the palm rest area. 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. Twisted Wedge and Canted valve (TFS and C302b) in aluminum promote even better performance. They'll work but have you got the Boss heads? You might even be able to get some rejects since you'd be cutting them up and remaching anyway. All Rights Reserved. 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. Had to mill out some (- one hour with a Dremel), to get my stock distributor clamp to fit. Ports 2.38" x 1.68" C9ZZ-9424-C. C9ZE-9425-A . I think that a race head is available through someone that is all aluminum. We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. 9 intake valves since they bolt on easy with no modification necessary. Yes you can bolt the 351C heads to a 289/302/351W block. We were smart enough to test-fit the heads on the Boss 302 block before testing began and discovered these heads are designed to be used with 7/16-inch head bolts, with restrictors in the head-bolt holes. I used them with a Comp Cams 274XE cam and a QFT 600cfm carb. A guy near here used the advice on the link below, starting with a 67 289 2V engine. This made-in-the-USA head is Edelbrock's value leader. Experimental Boss 302 style heads . I am building a budget 440 RV motor that should be a monster street tire smoker for under $3000. I might like to put it back together this summer with your fluid damper a 600 holley carb and maybe your electronic distributor . So now, we have a pair of legends, being compared on the dyno. As I recall from articles way back, this is an expensive process. Plus, they give you more power behind the wheel and in your wallet!
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