As the 1968 Tunnel Port engine turned into a disaster, someone at Ford Engine Engineering got the idea to put a set of Cleveland heads on a Tunnel Port block and thus was the beginning of what would become the BOSS 302 engine. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Assembled. Prices listed are from the story's original publish date, February 1, 2013. Bolt-On Hemispherical Heads for a Small-Block Ford - Street Muscle 2023 Power Automedia. Edelbrock Performance Cylinder heads are manufactured of A356 aluminum and made in the USA for AMC, Buick, Chevy, Chrysler, Ford, Oldsmobile, & Pontiac engines. 351 cleveland heads for sale | eBay The cylinder head is bolted to the engine block and sits above the pistons. The brute 427 FE Series big block that won Le Mans also reigned supreme in limited production 1964 Thunderbolt Fairlanes in NHRA competition. Suddenly these heads arent so appealing. 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. but thesell work on a large engine and flow, too. Swirl Remarks CHW's Modified Boss 302 head shows the elimination of a swirl effect at lifts below .600 inches. Your email address will not be published. No votes so far! If we've muddied the waters a bit, it's only the result delivering more information on the way to a decision. Wait 1.6 rockers? The cylinder head also contains the spark plug and fuel injector(s). 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. Our test heads came with the larger intakes that clearly contributed to these heads' strong showing. 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. Boss 302 Heads | HQ Automotive Service & Parts The intake is off a 1965 Shellby. Like we said, if best power or least price is your only concern, then the decision is easy. Autozone has a great price on these heads. Small Block Ford. Any who, this is a work laptop, and it started out pretty fast, but over time, it eventually slowed down. I expected cleanup, but not like this. Nevertheless, for a street engine, this head delivers excellent midrange power. JavaScript is disabled. Alum. In my 70 years of fooling with cars, we always had a formula. You might even be able to get some rejects since you'd be cutting them up and remaching anyway. Flashing in ports was unacceptable. The cylinder head is an important component of the internal combustion engine in a Ford 302 car. Boss 302 / Clevor Advice! | Ford Mustang Forums The heads were to big for a 351CLEVELAND. 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. But as we've seen before, the heads that produce the best peak power also tend to do so throughout the entire rpm band. Compensating for a Cold Engine When Adjusting Mechanical Lifter Valve if you have over. The product is a great entry level/cheap head though so 5 stars! But the springs they come with are for a hydraulic roller cam. Required fields are marked *. Free Shipping on Orders Over $99 at Summit Racing There is no flat spot and these engines will pull from 2000 against any rival including a Windsor. The Chevrolet used a 1.50:1 rocker, while on the Cleveland head, they used a 1.73 ratio. 1969 Ford Mustang Boss 302 | Hemmings What heads can you put on a Boss 302 block? - Vintage Mustang Forums 60 cc Chamber. 1970 Fastback (to be finished outside as a Boss 302 tribute), thanks for all the responces! I understand why now they are so much more money! Im sorry guys but you somehow missed something there are boss 302s out there cranking out way more than what you guys are claiming. 188cc Intake/63cc Exhaust Port Volume. It was a world beater and symbolic of the end of the classic muscle car era. Original aluminum Boss 302 valve cover brackets for the spark . Did you get them at a Chevy garage sale? cast iron vs aluminum | Mustang Forums at StangNet Generator stud kit for 1938-48; use #8506. You wont find heads of this quality at a better price anywhere. 185 cc Intake. Hammerhead Performance Ford hemi-style heads | Rare Car Network Both engines feature a four-inch bore and three-inch stroke, so there are no excuses available for either side regarding minor discrepancies in displacement. I simply cant believe this is all youve got. unfortunately I missed the return window due to illness. We got more than 450 HP on Fords dyno when we blew right rear tire and it took out Ford training board. They are Worth it. Click to expand. We will admit to you our results on the dyno were disappointing304 horsepower and 288 lb.-ft. of torque. They pull much harder through the midrange than the 351W heads they replaced on my 302 Ford. Boss 302 heads are unique.No other heads will work without some changes. These heads are screaming on the 302 I just built and are great quality. What I got was good, but the quality control person should not have let these go out the way they are. 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. They had problems with the 69 heads..made some changes in 70 and won the Trans Am races.So 70 or 71 heads are the better heads. 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. Why would you build a 302. Yates? If youre using stock pistons, get the version of these heads with the smaller intake valves (Part #5023). Experimental Part . Back in the day, there was all kinds of speculation that they made more than 400 horsepower. Valves 2.02 / 1.55" . Generator stud kit for 1938-48, use #8506. The biggest difference between the two engines is the cylinder heads.. Im extremely disappointed in this blog.. 10 years????? Im trying to build my 289 on a budget and saw a pair of Boss 302 heads online for $400 and thought why not. Heads are sold individually. It had to sneak the GTO in under the radar of upper management. Not even close to what I thought I should be getting in a brand new set of heads. 125 of silicone is likely to blow out. Not true! Flat cylinder heads have large water capacity and excellent breathing characteristics. 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. 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. 030 AND 2 OF THEM WERE. Enter Fords development of an all-new 351ci engine with poly-angle valve heads and tight-fisted wedge heads destined for a 1970 introduction. extreme amount of burrs left all around the rocker shaft mounting pads. What? Meaning, their AQL is very low. Fords classic 1969-70 BOSS 302 engine was a bold step forward after a miserable season in 1968. 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GT40 heads use 1.84 intake / 1.54 exhaust. You can see how the valves are canted in this picture. The darned thing was rabid dog fast. 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. Differences Between the Mustang 5.0 Coyote Engine - LMR.com 302 (may have been used on late 68 model year) 4V . A forum community dedicated to hot rod owners and enthusiasts. When it comes to the valve events, Ford and Chevrolet took two different approaches. I SENT THEM RIGHT BACK. Whoever invented that crap ought to be shot. This minor tune-up would really improve the flow curve and add a measurable amount of torque. sbf 302 aluminum cylinder heads. Next, we test a low-rpm cam and a high-rpm cam in the same engine to demonstrate the power differences. I was wondering how these heads would work on my 97 5. Edelbrock E-Street cylinder heads are ideal for entry level street performance engines. 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. This includes 260, 289, 302, Boss 302, 351W and related variants. We apologize for the inconvenience legend . They show to be suitable for the 221-302 Ford Small Block. . Any advice would be greatly appreciated. We started FORD Drag Club at Horn-Williams Ford in Dallas,Tx. The DZ 302 has a reputation for being a high-RPM screamer, and the camshaft is definitely part of that. The DZ 302 used a 1.5:0 ratio, while the Boss 302 head used a larger 1.72:1 ratio. Edelbrock 1115 Ford Flathead Cylinder Head, Ford Racing M-6049-SCJA Super Cobra Jet Cylinder Head, Cylinder Head SBF Stud and Plate 1.94 Assembled, Air Flow Research Renegade Street Aluminum Cylinder Head SBF 2 PC P/N 1402, Edelbrock 1116 Ford Flathead Cylinder Head, Blueprint Engines HP9009 SBF Alm. Using the native mouse is awkward. Im just hoping the new Edelbrock intake that arrived yesterday is better than these. Actually, everything about these heads helps the little 302. 1.73:1 rockers, 522 lift 292 duration nets 420 HP at 6300. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Thx. At idle when vacuum is the highest the valve guides leak lots of oil into the intake. So the induction system is kind of a toss-up. After idling for a couple of minutes the engine will start smoking horribly. All they had to do was make the piston dome bigger on the 302 to keep the same 11:1 compression ratio.. 1969 - C9ZE-6090-A or C These all-cast heads are designed for hydraulic flat tappet and hydraulic roller cam engines with hefty intake runners, stainless steel valves, Viton seals, and dual springs. The BOSS piston was a unique item, configured to use the 289HP rod with the 302 stroke. For use only with Special heads . Some of the guys were running ford 300 six cylinders with good success. How can you call it racing if you're putting the brakes on before the finish line? 1.290 in Spring. 289 & 302 (Except Boss 302), Dual Plane [Natural] (27) $207.99. I KNOW FROM EXPERIENCE. Both of these options caused an internal vacuum leak because my intake sat low and the end seals did not let the intake ports seal like they should have. Put on a 351w in a 1979 Tbird. The Dart castings would have been the Iron Eagle versions, and the Pro Comps are affordable in aluminum. Cylinder Heads - Quality Performance Aluminum Cylinder Heads If this becomes a bit more subjective by adding in power (and why wouldn't you? (BOSS) http://fordsix.com/forum/viewtopic.php?t=33048, 1971 Ford Maverick - Budget 10-Second Turbocharged Maverick Coupe - Car Craft Magazine. 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. AIR FLOW RESEARCH 1402 SBF 165cc Alum Heads Renegade Street 58cc. We came to the conclusion 4 were 2 close to the sparkplug bore and 2 were to close the the intake runners to be safe to use on the 5073 aluminum head. instead of 50 oz. 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. . So Im into changing springs, retainers, locators, etc. Theyre fully assembled with valve springs, retainers, locks, guideplates, studs, and seals. 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. FORD 5.0L/302 Cylinder Heads. 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. . 4V. 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. My build is a 306, 9. Cylinder heads casting ID decode for 260 289 302 351 390 406 427 428 429 460FE Boss Shelby. The Boss used a mild camshaft, mild compression, and lots of head flow, Holdener says. Ah now Plummer - it's not a secret if you post it on VMF! I think Im in love, lol!!. which de-stroked it. Said to be "overvalved" for street performance. The winner in this evaluation is almost always the least-expensive head just because of the way the math formula works. We discovered this was a 1969-70 BOSS 302 head modified for use on a 351C. For high-performance's street and competition, our dual-plane design makes outstanding power from 1500 to 6500 rpm. The Ford head uses a net-lash design that makes the valvetrain non-adjustable. Max effort class rule stuff runs over $2K. Sign up for a free trial to MotorTrend+ today and start watching every episode of Engine Masters, plus much more! Raced and owned quite a few Boss 302s. He used a correct Duntov camshaft and set the lash a little tighter than the original spec, at .020-inch. The wide and large port heads with staggered valve placement give the 302 H.O. I used them with a Comp Cams 274XE cam and a QFT 600cfm carb. I figured the Boss would make peak power. That may or may not make your ultimate choice any easier, but if so, you can thank us later. We got our answer. Batten of Romulus, Mich who did the furnance-blazed heads. The less you know the more you need vacuum secondarys. Both these motors were factory-rated at the same 290 horsepower, but that number is suspect, says Holdener. A3 cylinder heads - Cleveland's Forever The .10 difference in bore spacing( but the bolt pattern is the same square four as the smallblock) makes me think 3. The Cleveland type heads are used in the 302 heads. Sold individually. I have a Eldabrock Performer intake,msd distributor and 6al box and a 61mm bbk throttle body. Not to mention the 50lbs you lose off the front. FORD and Mustang Cylinder Heads (6090) 5752143: 59 332 352 . You have to rev it to the moon to really make any power. Years ago there was a six cylinder weight break for the late model classes at one of the local dirt tracks that I would frequent. . 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. Im sure you had over 400. Pit Bosses: Is the modern Boss 302 a worthy successor to the famed 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. It would make a nice high rpm engine that was pretty soft on the lower end where you spend the most time. 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. View Details. Not sure about the 5089. You MUST flycut the valve reliefs on the pistons larger if using stock pistons. 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). 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. Remember this correction adjustment is approximate and is only meant to get you close for the initial start up of the engine. Greg has spent eighteen years and counting in automotive publishing, with most of his work having a very technical focus. Revised cooling system passageways Siamese bore with drilled coolant crossover holes (Except on M-6010-B302BB ) Increased bulkhead material 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. Its all a win,win. Also; I had Carroll Shelby/SAAC racing program in several other FORD dealerships . 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. Get big power on a small budget with BluePrint Muscle Series cylinder heads! Perhaps you should do a YouTube search for Ford 302 boss vs 302 Chevroletperhaps it could wake you up on how much you DONT know about ford racing . i knew a guy that put a set on his 65 shelby. E7 heads use 1.78 / 1.48 just like the 60s stuff. AFR - Airflow . These aluminum heads are assembled with the perfect match of components for outstanding, trouble-free performance. 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. It was 351C heads, 3 of them, cut up into 6 pieces, then furnanced blazed. And like the others mention, it was C.J. 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. Install the gaskets with the raised seal towards the head and it will fit the ports much better. high power capabilities. 2. Keep the RPMs under 5,500 and valve lift is more like. Great top end with these heads also. For the testing, Holdener put together a non-numbers matching replica of the DZ 302. 625-HP Ford 'Boss 300' Inline-Six Destroys V8s Without Forced Induction These heads are coated with assembly lube out of the box. It had a close ratio 4 speed transmission, a 3.50:1 rear axle, a staggered shock competition suspension and a 16 : 1 steering box. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. 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 "civilian" Boss 302 engine had a 4 bolt main block with screw-in freeze plugs and a forged steel crank. Index your plugs on these engines. Russell; COMP Cams; TCI Auto; FAST; E-Comm Sales: Sales: 888-799-1135 Tech: 800 . 351 cleveland heads on a 302 | Hot Rod Forum were designed to be 1-for-1 replacements for Boss 351 cylinder heads. Ever wonder what those camshaft specification numbers really mean and how they affect engine performance? Great velocity with these heads. That was a surprise.. 040 roller short block A little lope at idle but it pulls everywhere in the rpm range. And then it's gonna be HP you'll make, not a lot of torque. 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. . We learned on the first few pulls that we had too much carburetor with our 750 cfm Holley 4160 and too little camshaft. and if you want to use a high-lift cam or supercharger; thats no problem, either. The Boss 302 had been built using a Windsor 302-cid engine, but then Cleveland heads had been added to the block due to their larger ports and valves. RHS shipped the heads with what should have been a sufficient single 1.460-inch-diameter valvespring, but the horsepower graph reveals that above 5,800 rpm the power trailed off, leading us to think that perhaps with a better spring this head could have carried the power out beyond 6,000 rpm, which would have improved its peak horsepower number. The J code 302-4V was only made in 68. I was still only available with the special 302ci 290 hp high output engine. The Fora platform includes forum software by XenForo. Production casting part numbers: 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. If weight is a consideration, keep in mind that these iron castings weigh considerably more than the rest of the aluminum heads. Best for 302-351 cubic inch engines. 6 Budget Small-Block Ford Cylinder Heads That Work - MotorTrend I wanted to built a great runing, mild street motor around a stock sbf 302 short block. Ford Aftermarket. 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. 165 cc Intake. 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. I first installed an oil trap in the PVC thinking something went wrong with the piston rings. The DZ 302 in the Z/28 was a natural marketplace competitor to the Boss 302 from Ford. They dont flow as well as some of the more expensive options available but they flow way better than OEM cast iron heads. If I wasnt on a time crunch, I would have returned these heads. pulled heads out of box, one head was in very nice shape, ready for service. It was the most expensive of all the heads we tested. IF YOU DO THIS BE SURE TO USE PERMATEX #2 ON THE INTAKE STUDS. 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. Very nice , Made in USA quality and same price as off shore heads. Boss 302s did indeed have 1.73 ratio rockers from the factory. I changed the thermostat so it would dump alittle more gas in her no problems so for. This made-in-the-USA head is Edelbrock's value leader. Classes? As fitted to the Boss, the heads feature steel spring seats, screw-in rocker studs, pushrod guide plates, and adjustable rocker arms. The Coyote V8 engine also concurrently debuted in the 2011 Ford F-150. Tech-Sheet. 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. I might like to put it back together this summer with your fluid damper a 600 holley carb and maybe your electronic distributor . 69 Boss 302 Mustang & Cougar . He stated he spent over $10,000 back then. It collects next to nothing.