They used the 3 center sections of the heads. I purchased these because I needed some better than stock, but not full out race heads. 030 shim. Street Cruiser Cylinder Head. And like the others mention, it was C.J. Help keep from being nose heavy. The heads also required custom-length Comp Cams pushrods to compensate for the relocated valves. For the 1968 Trans Am season, Ford took the 302 cubic inch Tunnel Port out there in search of victory. Especially for the price, I would buy them again in a heartbeat. When we tore apart the first head it was full of shavings and one of intake valves was super tight and one of the exhaust valves was bent w/. You'll notice that we attenuated the horsepower graph to include just the power curve between 4,000 and 6,200 rpm. At idle when vacuum is the highest the valve guides leak lots of oil into the intake. The Chevrolet used a 1.50:1 rocker, while on the Cleveland head, they used a 1.73 ratio. So Im into changing springs, retainers, locators, etc. on a brand new set of heads. The GT-40 cylinder head was produced in cast iron and aluminum, available from Ford Motorsport SVO and Ford Racing. 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. The Ford, however, made a peak horsepower number of 374 horsepower at the same 6,700 rpm as the Chevrolet, and again, had the same peak-torque RPM as the Chevy, but made slightly less peak torque, at 324 lb-ft. Edelbrock E-Street cylinder heads are just the ticket. 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. Is it the 69 or 70 Boss 302 head that's more streetable? The result of this engineering effort was the BOSS 302 engine, which became the Trans Am mill of choice for 1969-70 and beyond in SCCA competition. [] Heres a close up of the head Marvin is using on our 351C build. We will admit to you our results on the dyno were disappointing304 horsepower and 288 lb.-ft. of torque. (Image/Jim Smart) Although these are 1969-70 BOSS 302 heads, they []. Ive built 302/347 engines with stock heads, Roush180/Windsor Jr. , and Trick Flow Twisted Wedge heads. But as others have mentioned there are modifications that must be done to make it work. Needless to say the head kicked ***. In 1970 the Boss 302 was a Camaro killer, it could go 0-60 mph in 6.0 seconds. Works with most standard components. 1.90/1.60 in Valves. Twisted Wedge and Canted valve (TFS and C302b) in aluminum promote even better performance. Plus, they give you more power behind the wheel and in your wallet! 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. 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. 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. Purchased a long block on CL. AIR FLOW RESEARCH 1402 SBF 165cc Alum Heads Renegade Street 58cc. Roush? For the testing, Holdener put together a non-numbers matching replica of the DZ 302. It is now becoming sluggish, and I get LBSOD issues frequently because of the wifi. This new design offers a 25-50 HP increase over current Cobra Jet heads, depending upon displacement and camshaft. Very limited suppliers of flathead parts always look to speedway for my hotrod items. See it here: yes its ben done. This combo has been dynod at 460-ish hp at 5000 rpm and 550 ft lbs of torque at 2000 rpm. The Ford is specd out at 228 degrees at .050-inch lift, but lift was a different matter. We will safeguard your e-mail and only send content you request. 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. Enter Fords development of an all-new 351ci engine with poly-angle valve heads and tight-fisted wedge heads destined for a 1970 introduction. . 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. Aluminum. Both engines are solid flat tappet cams, and the Chevy especially responded to changes in the lash. 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. Dimensions in Inches (LxWxH): 24.1 x 24.1 x 8.7. Feb 19, 2016. I have used them for over 35 years and never seen something like this. How can you call it racing if you're putting the brakes on before the finish line? Pair. Would modifying the heads bring down the value of the heads? Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4 reach with flat gasket seat. 18 Ft/Lbs - Aluminum Heads. The Boss 302 takes the Mustang GT's suspension and adds higher-rate coil springs, stiffer bushings, and a larger diameter rear stabilizer bar. THAT IS UNACCEPTABLE IN MY BOOK. Thanks to all who helped us get here. They had to combine a four-inch bore from a 327 block with the three-inch stroke from the 283, Holdener elaborates. Ford Racing teamed up with Jon Kaase to redesign their 429 Cobra Jet cylinder heads, and the results are these Super Cobra Jet heads. I recommend purchasing ARP studs and guideplates for perfect rocker alignment. Absolutely no complaints, tons of flow and tons of fun. I used them with a Comp Cams 274XE cam and a QFT 600cfm carb. 1970 They are rugged and ribbed internally and externally for more strength. From new ones to the aluminum headed one I have in my fairlane now. 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. 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. Was running 850 dbl pump Holley with 4:56 gears, and I was running 12:20s at over 112 mph in the quarter. And torque is what gets the car moving from a stop, pushing you back in the seat. Experimental Part . But when I received them the box was almost completely destroyed and when I took them out of the box 2 valve springs and retainers were off the stud and loose in the box. 045. If I were to shop for a personal laptop, Id never consider this laptop based purely on what it looks like. Typing on the key kaed is cumbersome. While the Boss 302 was normally considered a 302 with 351 Cleveland heads, these canted-valve heads were used first on the Boss before the rest of the Cleveland was developed. I would guess Im somewhere around 375HP @ the flywheel in this build. saw a pair of Boss 302 heads online for $400 and thought why not. It came with aluminum heads that were way too big for the cam and my use. 1.73:1 rockers, 522 lift 292 duration nets 420 HP at 6300. I thought the bolt pattern was the same, that is what helped to make the swap work. Junk ass Chevrolet stroker engines.puleeeeeze. 9 intake valves since they bolt on easy with no modification necessary. 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 connecting rods began life as the same C3AE rod as the 289 HiPo but they had 3/8" bolts and they were spot faced instead of broached where the head of the bolt sits. The heads offered an excellent midrange power curve, behind only the Twisted Wedge casting between 4,000 and 5,500 rpm. Street 512 Mopar motor in a Dodge Dart . Ah now Plummer - it's not a secret if you post it on VMF! One side opted for mild lift and more duration, and the other went for more lift and milder duration. JavaScript is disabled. No stick hole up top. I called AFR about the problem and their only suggestion is to install a crankcase vacuum pump. Suddenly these heads arent so appealing. Pair. Production casting part numbers: True but it seems excessive to me. 1.290 in Spring. These aluminum heads are assembled with the perfect match of components for outstanding, trouble-free performance. Boss 302s did indeed have 1.73 ratio rockers from the factory. Edlebrock is one of the few companies making great performance parts for small block Fords. http://forums.vintage-mustang.com/vintage-mustang-forum/721154-1970-mach-1-h-code-build.html. If weight is a consideration, keep in mind that these iron castings weigh considerably more than the rest of the aluminum heads. 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. 45 degree spark plug wires work great with these heads. 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. D1ZE service block and aluminum rods. I expected cleanup, but not like this. First of all. 60 cc Chamber. Here you can see exactly where each engine outshined the other, and by how much. Very nice , Made in USA quality and same price as off shore heads. I did hear somewhere that there was a fellow using the late model chev heads and cutting those up and making a crossflow head for a 300 six..That would not be too hard to check out if a fellow had a 300 six block and some access to some of the late chev heads I think the LS6 heads..It took three of the heads to make one and since they are aluminum that resolves some of the fabrication issues..Is it true well I dunno for sure but it may be worth a looksee to see if it may work.. Part of the difference in valve lift numbers between the two is the rocker arm ratios used from the factory. 300 HP wouldn't be far off. 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 . 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. Aluminum Block Aluminum Heads - Subtract .012? The 4-bolt caps can be seen here. What I got was good, but the quality control person should not have let these go out the way they are. 2. high power capabilities. 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. I work in IT, so I know a good laptop/PC when I use one. 58 cc Chamber. 040 roller short block A little lope at idle but it pulls everywhere in the rpm range. BluePrint Engines stand in front of the class, offering both performance and cost-conscious enthusiasts a powerful alternativeMuscle Series cylinder heads. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. The odds of you building a vintage Ford BOSS 302 engine are slim because Ford built so few and so many are already spoken for. He used a correct Duntov camshaft and set the lash a little tighter than the original spec, at .020-inch. The Fora platform includes forum software by XenForo. Experimental Boss 302 style heads . can I send the stud kit back? 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. Meaning, their AQL is very low. Prices listed are from the story's original publish date, February 1, 2013. 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 advantage was better flow because the intake was on one side and the exhaust was on the other. Parts made from tooling for the cancelled 1971 BOSS 302 were used for service. Theyre fully assembled with valve springs, retainers, locks, guideplates, studs, and seals. At the time the first heads were done, I think only cast iron were available so they were furnaced brazed.If you sliced them, any shop that repairs heads could do the work. However, it also led to a lot of upset Bowtie fans for some reason. 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 BOSS 302 heads are known as "Cleveland style" heads as they are based on the head designed for the 351 Cleveland engine. No mention of those holes in the instructions. As far as I'm aware you only choice for factory heads in the Boss 302.
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