Then Ill be looking for upgrades. These are perfect for their intended use, the street. When the SCCA started the Trans-Am series. The intake ports flow 382 cfm at .750-inch of lift. Put on a 351w in a 1979 Tbird. Was running 850 dbl pump Holley with 4:56 gears, and I was running 12:20s at over 112 mph in the quarter. Aluminum. Our test heads came with the larger intakes that clearly contributed to these heads' strong showing. Throw a blue oval flag over the RHS, Edelbrock, and Ford heads, and the performance is very similar. He stated he spent over $10,000 back then. 154-4207: Ford Racing Aluminum Valve Covers, Part # M-6582-Z351, SS, 12pt . One side opted for mild lift and more duration, and the other went for more lift and milder duration. The Boss 302 and 351C-4V head casting are the same except for a minor difference in water passages. The 300 block may have a slightly taller deck height than the 240. 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. GT40 heads use 1.84 intake / 1.54 exhaust. But the springs they come with are for a hydraulic roller cam. you need custom pistons, boss intake, boss heads, boss pushrods, custom headers for a 65-66 mustang, 69-70 b2 headers for 67-70 mustang. The block is a 1980 302 Winsor. There was also drill flash from the machining of the bores for the valve guides and spark plugs. Like with standard 4V heads, you would have to machine the tops of the heads to accept screw-in, adjustable rocker studs. 60 cc Chamber. Once those two tasks were completed, the heads delivered the best peak horsepower and torque numbers of the entire test, knocking down an excellent 380 hp at 6,000 rpm. Are there any aftermarket heads for it? 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. No more dyno there. Small Block Ford. It had a description amd Alan Johnson Cylinder Heads listed as the vendor and contact #805-922-1202. First of all. Same transmission, run a 351W flywheel/flexplate (same as a C). Raced and owned quite a few Boss 302s. These heads are always perfect, but could use a little bowl work thanks team SUMMIT. Ford's legendary racebred Boss 302 engine remains one of the most significant high-performance power plants in the company's history. Guys if you want to make serious power. 9 intake valves since they bolt on easy with no modification necessary. 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. Purchased a long block on CL. Next, we test a low-rpm cam and a high-rpm cam in the same engine to demonstrate the power differences. Cylinder heads are available fully assembled or as bare castings. The "civilian" Boss 302 engine had a 4 bolt main block with screw-in freeze plugs and a forged steel crank. There are still 6 other steam holes not present in the 5073 head that are in the 350 block circa 1972. 300 HP wouldn't be far off. It was the most expensive of all the heads we tested. pulled heads out of box, one head was in very nice shape, ready for service. 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. And really, its a difference in the philosophy behind these two motors. The result was a powerful 290-horse factory screamer with peak street power coming in around 6,000 rpm. The cylinder head also contains the spark plug and fuel injector(s). Help keep from being nose heavy. Your email address will not be published. A forum community dedicated to hot rod owners and enthusiasts. You have to rev it to the moon to really make any power. These heads are really impressive!!!!!! See the top reviewed local exterior and siding contractors in Hohenthann, Bavaria, Germany on Houzz. Fig. When it comes to the valve events, Ford and Chevrolet took two different approaches. 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. I think that a race head is available through someone that is all aluminum. They have cast iron seats and guides (titanium valve compatible) and are set up for studs and guide plates. There are plenty of them lying around used and new-old-stock. So howd they stack up? Install the gaskets with the raised seal towards the head and it will fit the ports much better. They show to be suitable for the 221-302 Ford Small Block. Fords classic 1969-70 BOSS 302 engine was a bold step forward after a miserable season in 1968. What type of heads fit a Boss 302 block? You would need a Boss 302 manifold for the intake. SB Ford WP Man O'War iron block/Man O'War aluminum head Head Bolt Kit. Greg has spent eighteen years and counting in automotive publishing, with most of his work having a very technical focus. supershifter2 :shocked: :shaking: < :bs: ! I have certificate for it. All they had to do was make the piston dome bigger on the 302 to keep the same 11:1 compression ratio.. I would guess Im somewhere around 375HP @ the flywheel in this build. However, this time it boasted 412 Horsepower and 390 lb-ft Torque! Low mileage 440 from an RV, Hughes Whiplash cam and lifters, E-Street heads and RPM intake topped with a Quick Fuel Brawler 850 double pumper. 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! Actually, everything about these heads helps the little 302. 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. I thought the bolt pattern was the same, that is what helped to make the swap work. World contributed the lone cast-iron head to our Ford small-block test. Something is very wrong with this, a blueprinted stocker should be in the 375-400 HP range. Looking at the graph, it looks like the DZ 302 actually outperforms the Boss 302 from 3,700 rpm until 5,800rpm. The problem is the oil drain back passage has very poor alignment with the block and the valves are sitting in a pool of oil. 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. 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. Stroking an engine is not going to reduce your engine rpm. A forum community dedicated to vintage Ford Mustang owners and enthusiasts. Did you get them at a Chevy garage sale? The TFS heads made an honest 380 hp, but what we found surprising was how well the Edelbrock E-Street head did, with a peak of 371, substantially better than Ford Racing's 362-hp third-place finish. 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. 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. Ford Racing teamed up with Jon Kaase to redesign their 429 Cobra Jet cylinder heads, and the results are these Super Cobra Jet heads. Street 512 Mopar motor in a Dodge Dart . 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. 1/23 . Ford took on the world with the GT40 supercar. the engine was called a "boss 289" not a clevor, a clevor was a 351W with 351C heads and a custom intake. Building LS garbage? Here you can see exactly where each engine outshined the other, and by how much. For a better experience, please enable JavaScript in your browser before proceeding. 02 intake/1. The Edelbrock #5073 E-Street cylinder heads are designed for use with 1955-1986 Small-Block Chevy applications. View Details. my signature linesnot really directed at anyone in particular.. 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. 154-3701: SB Ford Boss 302 12pt Head Bolt Kit. 09 of shims installed so they look good. Ford Aftermarket. 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. 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 . Intake - 2.19 inches reading. The Chevrolet used a 1.50:1 rocker, while on the Cleveland head, they used a 1.73 ratio. Alum. 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. These heads are coated with assembly lube out of the box. The RHS headsproduced the next-closest average horsepower and torque, with the Edelbrock and Ford heads very close behind. ported and polished heads can also provide good results, but they may require more work to install and tune properly. Its useful for when you have a tight engine compartment and headers in a Falcon. Some of the guys were running ford 300 six cylinders with good success. Get big power on a small budget with BluePrint Muscle Series cylinder heads! BOSS Cars Nationals 2005 - BOSS Cars Reunited. Theyre fully assembled with valve springs, retainers, locks, guideplates, studs, and seals. Well, I got about 500 miles on the engine now and couldnt be happier about the build. Rugged, ribbed internally and externally, with a large water capacity and excellent breathing characteristics. Do the torque in 2 steps, first just hand tight, second with the torque wrench. Sign up for a free trial to MotorTrend+ today and start watching every episode of Engine Masters, plus much more! Is it the 69 or 70 Boss 302 head that's more streetable? Today, the aftermarket lineup of Ford cylinder heads has plenty of castings from which to choose. 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! Exhausts have only a. The BOSS piston was a unique item, configured to use the 289HP rod with the 302 stroke. The winner in this evaluation is almost always the least-expensive head just because of the way the math formula works. Edelbrock E-Street cylinder heads are ideal for entry level street performance engines. Thesecret to a long life stroker is to add wieght to the crank so you can exterally balance @ 28 oz. Ford went to Le Mans and beat Ferrari not once, but four times, settling an age-old dispute over who had had the fastest cars in the world. 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. 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. 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Cover Autolite 4V casting D0ZX9B48-3 . 1969 Intake - 2.23 inches Exhaust - 1.72 inches. I was still only available with the special 302ci 290 hp high output engine. Reportedly designed by a drag racer and tinkerer named Sherman Sligh, the Boss 300 is engine design gone mad. 64cc Volume. NOS 1969 1970 Mustang Boss 302 speedometer. It would make a nice high rpm engine that was pretty soft on the lower end where you spend the most time. 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. in 1969 with Doug Durham and me ,TED FORDMAN EHRHARDT who took a new Boss 302 short block apart and checked all specs. The Cleveland heads can fit a 302 with the appropriate water passage mods and shouldered bolts to compensate for the bolt hole difference. Weve got 302 fords with gt40 3 bar heads making over 500 hp. Original aluminum Boss 302 valve cover brackets for the spark . Sold individually. Boss 302 blocks are used all the time for Windsor headed performance buildups! i drank a bottle of 10,000 rpm and thode a rod !!! They still have classes? The GT-40 cylinder head was produced in cast iron and aluminum, available from Ford Motorsport SVO and Ford Racing. The Fora platform includes forum software by XenForo. Enter Fords development of an all-new 351ci engine with poly-angle valve heads and tight-fisted wedge heads destined for a 1970 introduction. we all have our shortcomings. Once I pick the heads I was going to find a good cam for daily driving/ performance. This engine was built in the 80s by someone with way to much money. Up front, upgraded upper and lower control arms fix some of the shortcomings of the original Ford bits, while out back, a Fays2 suspension Watt's link locates . THAT IS UNACCEPTABLE IN MY BOOK. At less than $950 for the pair, these Edelbrock heads may be the best bang-for-the-buck investment of all the Ford heads in this test. To clear up a few questions, the combustion chambers are 60cc, not 64cc. 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. When you do that, you can see that the TFS head did substantially better than all the other heads above about 4,400 rpm. I SENT THEM RIGHT BACK. You might even be able to get some rejects since you'd be cutting them up and remaching anyway. This particular evaluation only works, however, if lowest cost is the highest priority. . What I have found out so far, the engine runs. Plus we used cam dial-in and it was only off a half degree. When you shop through links on our site, we may earn an affiliate commission. The 68 F code had 10:1 compression and made 210 bhp. 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. BluePrint Engines stand in front of the class, offering both performance and cost-conscious enthusiasts a powerful alternativeMuscle Series cylinder heads.
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