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Boss 302 Heads | HQ Automotive Service & Parts The 69 and 70 F code 302's are rated at 220 bhp. Well I have a 1977 copy of Pop. ARP - The Official Site | Ford - Small Block - Windsor Kits These aluminum heads can be directly installed on all small-block Fords: 289, 302, 351W and, with some modifications, even 351C engine blocks. 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. THE NEXT ISSUE IS THE RECOMMENDED INTAKE GASKET FEL-PRO 1262. They used the 3 center sections of the heads. Pair. Sure there's someone on here that could tell you what heads you have would be better but with the right (mild) cam, good intake, etc. As I recall from articles way back, this is an expensive process. Ford Aftermarket. Reworking Cleveland heads I think would require reducing the size of some of the water passages and I unsure of the block clearance . The head bolts used on a Boss 302 were a flanged-style head bolt. The Cleveland style head featured a staggered, canted valve arrangement. When you do that, you can see that the TFS head did substantially better than all the other heads above about 4,400 rpm. This is the Head Bolt Torque Sequence (Pattern) for Ford's small block. Future availability is unknown. 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. Bolts in anywhere a 302 will go with the right headers and pan. To complete the Boss, we added an Edelbrock Performer RPM intake, a Holley 750-cfm, mechanical-secondary HP carb, MSD distributor, and a set of open dyno exhaust headers, and we were ready to rumble. 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 coated with assembly lube out of the box. Click to expand. If I were to shop for a personal laptop, Id never consider this laptop based purely on what it looks like. ported and polished heads can also provide good results, but they may require more work to install and tune properly. 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. searching. However, it also led to a lot of upset Bowtie fans for some reason. Won't work with the 289 stroke. 1969 - C9ZE-6090-A or C Ford 260-289-302 Firing Order; Ford 351C 351M 400M Firing Order; Ford FE Firing Order; Ford 429 and 460 Firing Order; Chevy SB and BB Firing Order; and if you want to use a high-lift cam or supercharger; thats no problem, either. Wait 1.6 rockers? 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. Does anyone remember the six cylinder heads they made for Bruce Sizemore. Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4 reach with flat gasket seat. The result was a powerful 290-horse factory screamer with peak street power coming in around 6,000 rpm. Some additional 302 factory valve sizes: 69 Boss 302 intake 2.23 / exhaust 1.71. Cylinder Head 190cc Assembled. Better compression then stock, better breathing then stock. But, I just came across this website and happened to ask about B. Sizemor's 6. extreme amount of burrs left all around the rocker shaft mounting pads. Find Parts and Accessories Boss 302 aluminum heads KEYWORD and get Free Shipping on Orders Over $99 at Summit Racing! Aluminum Block Aluminum Heads - Subtract .012? 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 are Worth it. unfortunately I missed the return window due to illness. Outperform many more expensive parts. Its not a good time to be building a performance engine. Exhausts have only a. Would modifying the heads bring down the value of the heads? 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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. Building a Boss 302 for Street Use - MotorTrend Because they didnt allow destroking [of an existing engine design] initially, both companies had to build actual displacements of five liters, explains Holdener. 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. 030 shim. (BOSS) It would make a nice high rpm engine that was pretty soft on the lower end where you spend the most time. second time I have been disappointed with Edelbrock. The Cleveland heads can fit a 302 with the appropriate water passage mods and shouldered bolts to compensate for the bolt hole difference. edelbrocks were my first finned aluminum heads for a flathead25 years agoand they were o. k. for a 239 or a 255, due to small combustion chambers. Batten of Romulus, Mich who did the furnance-blazed heads. Im trying to build my 289 on a budget and saw a pair of Boss 302 heads online for $400 and thought why not. 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. 15 Best Cylinder Heads For Ford 302 (2023 Updated) All Rights Reserved. Great bang for your buck with these heads. 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). 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. The 1968 Trans Am season was a disaster. All they had to do was make the piston dome bigger on the 302 to keep the same 11:1 compression ratio.. Cheaper than some rebuilds. I have not been able to specifically identify because the stamp on corner does not mach up with what it should be. The block is a 1980 302 Winsor. Production casting part numbers: So Im into changing springs, retainers, locators, etc. The Twisted Wedge heads also had the strongest horsepower curve above 4,000 rpm of all the heads tested. Just my thought. TRW developed these pistons and suppled Ford with them for both racing and production engines. 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. The E-street came in second in peak horsepower and a very close third in average horsepower and torque. Im looking to build an engine that produces 300ish hp. Crate Engine, 302 C.I.D. 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. 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. FORD 5.0L/302 Cylinder Heads. Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4in. These elements made the BOSS 302 a unique mill compared to what the rest of Detroit had to offer at the time. . It was what the SCCA mandated for street homologation. DONT USE ANYTHING ELSE OR IT WILL LEAK. it will be a "high winder" and with a bullet proof bottom end and a 4 bolt block could run to 10,000 rpm b 4 exploading ! Fords great success with its powerful V8 engines is legendary. Swirl Remarks CHW's Modified Boss 302 head shows the elimination of a swirl effect at lifts below .600 inches. Come join the discussion about restoration, modifications, NOS parts, troubleshooting, VIN codes, and more! Though I rated the overall part as good, the areas that really count are just average. These new aluminum hemi heads will bolt directly to any small-block Ford from a 289/302 all the way up to 351W as well as Cleveland engines. Theyre fully assembled with valve springs, retainers, locks, guideplates, studs, and seals. detroit metro auto parts "302" - craigslist I KNOW FROM EXPERIENCE. 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. Edelbrock E-Street cylinder heads are just the ticket. Performer RPM Small Block Ford E-Boss 302 Intake Manifold The stroke difference between the two engines amounted . [IMG]http://www.dslextreme.com/users/jbooth/sidenew1.jpg[/IMG][IMG]http://www.dslextreme.com/users/jbooth/enginenew1.jpg[/IMG]. See all 22 photos. Above you see a casting with a D1ZE part number. installed the heads on a 1978 460 bored out .060 over went from 500 hp to 551 hp @4900 rpm on a dyno 8/9/19. i knew a guy that put a set on his 65 shelby. 69 Boss 302 Mustang & Cougar . Exhaust - 1.72 inches. The Fora platform includes forum software by XenForo. 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. Thanks to all who helped us get here. While it only had .480-inch of lift, that duration would really allow the RPM to climb. The holes are also there in a 350 block and Felpro gasket as well as the 5073 head. Did you get them at a Chevy garage sale? i drank a bottle of 10,000 rpm and thode a rod !!! BluePrint Engines stand in front of the class, offering both performance and cost-conscious enthusiasts a powerful alternativeMuscle Series cylinder heads. OK, you can do pretty well on a budget. These are perfect for a street build and the price is outstanding!!. More than 400 horses easy. I used them with a Comp Cams 274XE cam and a QFT 600cfm carb. in 1969 with Doug Durham and me ,TED FORDMAN EHRHARDT who took a new Boss 302 short block apart and checked all specs. You might even be able to get some rejects since you'd be cutting them up and remaching anyway. We should stress that during testing we optimized each set of heads for timing and jetting and then ran the engine for two near identical runs, which were then averaged to come up with the final power numbers. Had to mill out some (- one hour with a Dremel), to get my stock distributor clamp to fit. Then Ill be looking for upgrades. 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? However, way down low, where the big-port Boss 302 motor isnt supposed to work, it made decent low-speed torque. 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. 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. Put on a 351w in a 1979 Tbird. Sold individually. 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. GT40 heads use 1.84 intake / 1.54 exhaust. Thesecret to a long life stroker is to add wieght to the crank so you can exterally balance @ 28 oz. Why would you build a 302. The Coyote V8 engine also concurrently debuted in the 2011 Ford F-150. 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. A Modern Ford 351 Cleveland Nets Almost 900 Horsepower N/A - EngineLabs but thesell work on a large engine and flow, too. If it is, then you know what you need to do. instead of 50 oz. Huge difference in quality. At the brochure, the two engines are identical power-wise, according to Holdener, but we prefer to let the dyno tell us who makes what. And you'd have to replace the factory two-piece valves which are known to come apart randomly for no reason. It was 351C heads, 3 of them, cut up into 6 pieces, then furnanced blazed. which will help take the wait off the rear main bearing. Something is very wrong with this, a blueprinted stocker should be in the 375-400 HP range. 154-3701: SB Ford Boss 302 12pt Head Bolt Kit. Pic 2 is a spot next to a water port on the intake surface where it looks like the facing tool tilted some. But for the rest of us, choosing a cylinder head might be a complex algorithm of price, power, brand loyalty, ease of installation, head bolt size, and maybe even shoe size if you're that compulsive. Are there any aftermarket heads for it? That means 305 maximum cubic inches. These aluminum heads are assembled with the perfect match of components for outstanding, trouble-free performance. The Ford head uses a net-lash design that makes the valvetrain non-adjustable. If we've muddied the waters a bit, it's only the result delivering more information on the way to a decision. Does any 351 Cleveland head fit it? These heads feature A356 aluminum castings that are heat-treated to T-6 specs for superior casting strength and quality. For the 1968 Trans Am season, Ford took the 302 cubic inch Tunnel Port out there in search of victory. I was trying to find a set of heads that will produce 300ish hp. Here you can see exactly where each engine outshined the other, and by how much. Back in the day, there was all kinds of speculation that they made more than 400 horsepower. 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. very poorly packaged, opened it and there was no screen protection sheet between screen and keyboard. The wide and large port heads with staggered valve placement give the 302 H.O. But as we've seen before, the heads that produce the best peak power also tend to do so throughout the entire rpm band. The Boss used a mild camshaft, mild compression, and lots of head flow, Holdener says.