boss 302 aluminum heads

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. Ford Performance Cylinder Head X2 Street. They have cast iron seats and guides (titanium valve compatible) and are set up for studs and guide plates. 154-4207: Ford Racing Aluminum Valve Covers, Part # M-6582-Z351, SS, 12pt . 500 max! The connecting rods and crankshaft are made of forged steel, and the heads are aluminum with roller rocker arms. I have certificate for it. The wide and large port heads with staggered valve placement give the 302 H.O. 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. Today's small-block Ford street engine builder has it easy. NOS 1969 1970 Mustang Boss 302 speedometer. The 69 and 70 F code 302's are rated at 220 bhp. 58 cc Chamber. And, he decided to make that happen. Having a hard time finding Boss 302 Heads online? 1/23 . Aluminum Block Aluminum Heads - Subtract .012? Im sorry guys but you somehow missed something there are boss 302s out there cranking out way more than what you guys are claiming. Suddenly these heads arent so appealing. 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. Put on a 351w in a 1979 Tbird. Its main function is to seal the combustion chamber and provide a surface for the intake and exhaust valves. If this becomes a bit more subjective by adding in power (and why wouldn't you? Every time I put a bigger carb on it, it ran faster. Luckily I had the tools to put them back on but this could have been a issue and made them not bolt on heads. 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. 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 302's fuelie heads. I just got a block that is 289 .30 over and I wanted to reuse my pistons I think they are sealed power 7006p (obsolete now). . These heads are really impressive!!!!!! True but it seems excessive to me. Locate Boss 302 Heads on sale below with the biggest variety of Boss 302 Heads anywhere online. The Boss was topped off with an original aluminum. 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. The intake is off a 1965 Shellby. Evidently youre research people are either misinformed, or just dont really care about building anything ford. Find Parts and Accessories Boss 302 aluminum heads KEYWORD and get Free Shipping on Orders Over $99 at Summit Racing! For a better experience, please enable JavaScript in your browser before proceeding. That means 305 maximum cubic inches. for use w/ Special Intake. 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. 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. They feature high-flow ports and steel alloy intake and exhaust valve seats installed (they do require a competition valve job and bowl blending). Primarily, the 5.0L V8 in the F-150 received a lower compression ratio (10.5:1), intake camshafts with less duration, cast iron exhaust manifolds, and revised cylinder . He stated he spent over $10,000 back then. 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. So your wrong. 165 cc Intake. supershifter2 :shocked: :shaking: < :bs: ! Edelbrock E-Street cylinder heads are just the ticket. Boss 302 heads are unique.No other heads will work without some changes. The factory 780cfm carburetors are really, really expensive, and we didnt want to spend a few thousand dollars on a carburetor, explains Holdener. Im trying to build my 289 on a budget and saw a pair of Boss 302 heads online for $400 and thought why not. I installed these on a factory 302 HO in my 94 Mustang. 88 DNA Motoring LEPOW-038 Aluminum Bare Angled Cylinder Head [For Chevy SBC 302/327/350/383/400] 3 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. The "civilian" Boss 302 engine had a 4 bolt main block with screw-in freeze plugs and a forged steel crank. This educational content is not intended to be a substitute for professional advice. After spending an hour on the Edlebrock Tech line we determined the instructions are out of date relative to the current product being delivered of the 5073 head. My build is a 306, 9. What I got was good, but the quality control person should not have let these go out the way they are. 015 AND THE REST WERE. it boots up ok but not as fast as my other i5 laptop. If youre using stock pistons, get the version of these heads with the smaller intake valves (Part #5023). They dont flow as well as some of the more expensive options available but they flow way better than OEM cast iron heads. The 300 and the 240 are identical blocks,the heads are different and the 240 is basically a destroked 300 so it will rev a little higher. 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. Flashing in ports was unacceptable. 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. I understand why now they are so much more money! When I set the carb I get a bouncing vacum needle at idle, Ive been told thats a sign of a sticking valve. 69 Boss 302 Mustang & Cougar . The heads are Cleveland heads. And like the others mention, it was C.J. You would need a Boss 302 manifold for the intake. would love to return this old jalopy back!!!. Very nice , Made in USA quality and same price as off shore heads. The runners are as cast and a bit rough. 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. 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 had 90 runs on an original Boss 302 in a 70 Mustang. LOOKS AND PERFORMED GREAT. No drilling is required since it appears they updated the manufacturing process to eliminate this need. For use only with Special heads . Fords classic 1969-70 BOSS 302 engine was a bold step forward after a miserable season in 1968. edelbrock. Does any 351 Cleveland head fit it? [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. 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. 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. 60 cc Chamber. That puts lift over .500 inch .514 according to our calculations, minus the lash, Holdener reveals. A factory high-rise dual-plane intake manifold was used, with one part not period-correct. Ford has always been a car company that dared to go where no automaker had ever gone before. I believe C.J. 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. Hack said: The size of 302 valves has varied a little in some performance versions over the years. 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. Im trying to leave this pretty much as is, until I get a few good drives in. 70 Boss 302 intake 2.19 / exhaust 1.71. On episode 19 of Engine Masters, David Freiburger explains cam lift, duration, lobe separation angle, and installed centerline. Im just hoping the new Edelbrock intake that arrived yesterday is better than these. Like with standard 4V heads, you would have to machine the tops of the heads to accept screw-in, adjustable rocker studs. So howd they stack up? 1 on Pg 2 instructs the used to drill 3 holes if a 400 block is used. 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. Huge difference in quality. Does anyone remember the six cylinder heads they made for Bruce Sizemore. Said to be "overvalved" for street performance. The BOSS piston was a unique item, configured to use the 289HP rod with the 302 stroke. Otherwise, pair these with some flat top pistons with the correct valve reliefs. instead of 50 oz. If weight is a consideration, keep in mind that these iron castings weigh considerably more than the rest of the aluminum heads. The Dart castings would have been the Iron Eagle versions, and the Pro Comps are affordable in aluminum. These Ford heads tied with the Edelbrock heads for third place in average torque and were extremely close to the RHS head's second-place power level. can I send the stud kit back? Search 6 Hohenthann siding contractors & companies to find the best exterior and siding contractor for your project. Fords great success with its powerful V8 engines is legendary. Would modifying the heads bring down the value of the heads? 546hp @5600 rpm also had 630 ft-lbs torq@ 4400 rpm. All Rights Reserved. These aluminum heads can be directly installed on all small-block Fords: 289, 302, 351W and, with some modifications, even 351C engine blocks. 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. Cast from prime A356 T6 aluminum, these "Z" heads from Ford Racing were designed using solid modeling technology. The block is a 1980 302 Winsor. But thanks to all of your responses this is not for me! Not sure about the 5089. 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. Ford's legendary racebred Boss 302 engine remains one of the most significant high-performance power plants in the company's history. Fits on Dodge ramcharger, monaco, w100 series, sierra, pioneer, d300 pickup, d100 series, custom. Best heads for the price. Combined with the big bore and short stroke, everyone thought these things wanna rev. The reality is that the head flow and dual-plane intake really limited the RPM.. We apologize for the inconvenience A stock Boss head will support way over 500 horsepower, where the Chevy will struggle at 400 horsepower. Had to mill out some (- one hour with a Dremel), to get my stock distributor clamp to fit. Pontiac was the outlaw division. The holes are also there in a 350 block and Felpro gasket as well as the 5073 head. If we were going to use these heads on a street engine, we'd disassemble them and spend the extra bucks to add a 30-degree back-cut to the intake and exhaust valves to improve their overall flow. I would suggest pulling the vavles and wiping everything down. 289 & 302 (Except Boss 302), Dual Plane [Natural] (27) $207.99. Install the gaskets with the raised seal towards the head and it will fit the ports much better. The Boss 302 takes the Mustang GT's suspension and adds higher-rate coil springs, stiffer bushings, and a larger diameter rear stabilizer bar. For high-performance's street and competition, our dual-plane design makes outstanding power from 1500 to 6500 rpm. While the DZ 302 had a stronger midrange than the Boss 302, in stock form, the Boss reigns supreme in the higher RPM range. And the reality is, they did, in modified trim the way they were raced in the Trans-Am series. Boss 302 is a Windsor engine; uses Windsor cam lobe profile & 1.6 Windsor rockers. For a better experience, please enable JavaScript in your browser before proceeding. Have you got the intake? The spark plugs are also positioned well, and I cant foresee any interference with any headers. I was going to have my reconnecting rods reconditioned with 5/16 arp bolts. I changed the thermostat so it would dump alittle more gas in her no problems so for. 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. detroit metro auto parts "302" - craigslist . . Once I pick the heads I was going to find a good cam for daily driving/ performance. 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. Come join the discussion about restoration, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more! 8:1 compression, TFS Stage 1 hydraulic roller cam, 1 5/8 headers, Summit Stage 1 dual plane intake, Edelbrock 650 AVS carb. The Boss used a mild camshaft, mild compression, and lots of head flow, Holdener says. Not only did the TFS heads produce the most peak power, they also logged the best average torque and horsepower. 1969 Build your own custom newsletter with the content you love from EngineLabs, directly to your inbox, absolutely FREE! 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. These lightweight aluminum heads bolt up to your small block Ford and feature 190cc intake/60cc exhaust runners, 60cc combustion chambers, and 2. WITH THE STIFFER SPRINGS I REALIZED THE PEDESTAL MOUNT ROCKERS WOULD MOST LIKE FAIL SO I MACHINED THE PEDESTAL PADS, DRILLED AND TAPPED AND INSTALLED HELI COILS FOR ROCKER STUDS.