When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Comparing the cylinder heads on paper, using data collected by Holdener for a previous article, the Boss heads clearly come out ahead. The Ford heads did well during the testing, making a peak of 362 hp. Bored out 70-thousandths to 310 cubic inches and with a laundry list of. The Coyote V8 engine also concurrently debuted in the 2011 Ford F-150. The E-street came in second in peak horsepower and a very close third in average horsepower and torque. Ports 2.38" x 1.68" C9ZZ-9424-C. C9ZE-9425-A . Wait 1.6 rockers? Ive built 302/347 engines with stock heads, Roush180/Windsor Jr. , and Trick Flow Twisted Wedge heads. For use only with Special heads . To clear up a few questions, the combustion chambers are 60cc, not 64cc. The intake ports flow 382 cfm at .750-inch of lift. Combining with an iron block and aluminum heads, the 4.0L SOHC V6, made a substantial amount of more power than its predecessor, producing 210 horsepower at 5,250 RPM and 240 lb/ft of torque at 3,250 RPM. Exhausts have only a. Feb 19, 2016. LOOKS AND PERFORMED GREAT. 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. 2023 Power Automedia. GT40 heads use 1.84 intake / 1.54 exhaust. OK, you can do pretty well on a budget. You have to rev it to the moon to really make any power. Maximum output for less money!. If you are looking for a set of World aluminum heads, you can find them at Bill Mitchell Products. Boss 302s did indeed have 1.73 ratio rockers from the factory. Same transmission, run a 351W flywheel/flexplate (same as a C). It was honestly a guess on my part and the Tech had no additional information or opinion to offer. However, this time it boasted 412 Horsepower and 390 lb-ft Torque! 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 have not been able to specifically identify because the stamp on corner does not mach up with what it should be. 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. Well, I got about 500 miles on the engine now and couldnt be happier about the build. Aluminum heads are affordable, lighter and will make more power. I KNOW FROM EXPERIENCE. 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/. Was running 850 dbl pump Holley with 4:56 gears, and I was running 12:20s at over 112 mph in the quarter. Ford took on the world with the GT40 supercar. We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. Pair. 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. In 1970 the Boss 302 was a Camaro killer, it could go 0-60 mph in 6.0 seconds. Renegade Street. If we've muddied the waters a bit, it's only the result delivering more information on the way to a decision. Do 302 cylinder heads increase RPM? E7 heads use 1.78 / 1.48 just like the 60s stuff. 010 runout and wouldnt come out of the head without a lot of force (we never took it out). 1.90/1.60 in Valves. writing. Bolts in anywhere a 302 will go with the right headers and pan. Reworking Cleveland heads I think would require reducing the size of some of the water passages and I unsure of the block clearance . Better compression then stock, better breathing then stock. Pic 2 is a spot next to a water port on the intake surface where it looks like the facing tool tilted some. Street Cruiser Cylinder Head. Plus we used cam dial-in and it was only off a half degree. Im looking for three Ford Cleveland 4V engines. The RHS heads come out of the box with a very nice-looking casting, and back that image up with respectable performance. So the induction system is kind of a toss-up. Does anyone remember the six cylinder heads they made for Bruce Sizemore. Well I have a 1977 copy of Pop. 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. i knew a guy that put a set on his 65 shelby. Prices listed are from the story's original publish date, February 1, 2013. 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. If weight is a consideration, keep in mind that these iron castings weigh considerably more than the rest of the aluminum heads. The DZ 302 used a 1.5:0 ratio, while the Boss 302 head used a larger 1.72:1 ratio. Original aluminum Boss 302 valve cover brackets for the spark . Click to expand. Australian car enthusiast with 30 years experience in the high performance industry. If I were to shop for a personal laptop, Id never consider this laptop based purely on what it looks like. Greg has spent eighteen years and counting in automotive publishing, with most of his work having a very technical focus. 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? would love to return this old jalopy back!!!. saw a pair of Boss 302 heads online for $400 and thought why not. second time I have been disappointed with Edelbrock. you could also get a 302 crank and rods with custom pistons, a 302 crank with 289 length con rods and off the shelf b2 pistons. Cross Boss 302 Mustang off highway use. That was a surprise.. They feature high-flow ports and steel alloy intake and exhaust valve seats installed (they do require a competition valve job and bowl blending). The compression ratio is 8. Great option. 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. You are better off buying model 5023 with 1. edelbrock. 030 AND 2 OF THEM WERE. Do the torque in 2 steps, first just hand tight, second with the torque wrench. Depends on material old school rubber gets lube, the Polytetrafluoroethylene rubber gos on dry. We started FORD Drag Club at Horn-Williams Ford in Dallas,Tx. Ford Racing's Z heads (PN M-6049-Z304DA, 63cc chamber, 2.02-inch intake valve, $1,695) are the next step in bolt-on performance castings for small-block Ford engines that see street and on-track . Cover Autolite 4V casting D0ZX9B48-3 . The Duntov cam that GM used in the DZ 302 had over 250 degrees of duration at .050 [inch]! Holdener explains. 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. Looking at the graph, it looks like the DZ 302 actually outperforms the Boss 302 from 3,700 rpm until 5,800rpm. 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. 302/351 X2 Head. 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. I am presently installing a 302 clevor into a 83 mustang GT. Small Block Ford. The cam featured 290 degrees duration and .477 in (12.1 mm) of lift. Compatible with Chevy Small Block 302/327/350/383/400 SBC 200cc Intake 68cc Angled Plug Aluminum Bare Cylinder Head $238.88 $ 238 . . Age Group: adult. Fords great success with its powerful V8 engines is legendary. were designed to be 1-for-1 replacements for Boss 351 cylinder heads. Flashing in ports was unacceptable. i drank a bottle of 10,000 rpm and thode a rod !!! Im sure you had over 400. View Details. And like the others mention, it was C.J. 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. I am building a budget 440 RV motor that should be a monster street tire smoker for under $3000. It took about 500 honest HP to break into the 11s with a little bit heavier car than your mustang. Plus, they give you more power behind the wheel and in your wallet! By doing the heads himself (he'd never tried it before), and using a 289HP air cleaner, 600 cfm carb, Edelbrock Performer RPM intake, stock distributor tuned to BOSS 302 specs, and a C9OZ-6250-C hydraulic cam, turned 323.5 hp @5300 rpm. 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. Edelbrock aluminum 2V cylinder heads with a mild camshaft upgrade top its stock Boss 302 block, while a Tremec TKO five-speed gearbox sits in place of the factory toploader four-speed. The 68 J and F code heads show to be the same in my information. Edelbrock 5025: Cylinder Heads, E-Street, Aluminum, Assembled, 60cc Chamber, 170cc Intake Runner, Ford, 289, 302, 351W, Pair Are you looking for a set of entry-level street performance heads for your modern street rod, muscle car, or truck? 22-25 Ft/Lbs - Iron Heads. Ford's original Boss 302 engine was only produced for two years (1969 and 1970), but it was so cool it's understandable why the little V-8 has gained such an . THE NEXT ISSUE IS THE RECOMMENDED INTAKE GASKET FEL-PRO 1262. The intake is off a 1965 Shellby. Edelbrock E-Street cylinder heads are ideal for entry level street performance engines. Come join the discussion about restoration, modifications, NOS parts, troubleshooting, VIN codes, and more! 1.290 in Spring. 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. THe new heads will have the same bolt-pattern as the original 6. Though I rated the overall part as good, the areas that really count are just average. AFR - Airflow . Valves 2.02 / 1.55" . . 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 . If this becomes a bit more subjective by adding in power (and why wouldn't you? The holes are also there in a 350 block and Felpro gasket as well as the 5073 head. Come join the discussion about restoration, builds, performance, modifications, classifieds, troubleshooting, maintenance, and more! The holes are just big enough for the spark plug socket, which guides it in perfectly. The term refurbished was definitely stretched here: the screws are different colors from the black casing, the bottom rubber footers are looking like they have decayed so that the laptop wobbles, the side has a port that was left wide open with a broken/cracked piece and then when you try to open it, the screen side sticks to the keyboard side like it has a gummy residue of some sort on it. No votes so far! It had to sneak the GTO in under the radar of upper management. Revised cooling system passageways Siamese bore with drilled coolant crossover holes (Except on M-6010-B302BB ) Increased bulkhead material Then Ill be looking for upgrades. What cam specs and static CR? However, way down low, where the big-port Boss 302 motor isnt supposed to work, it made decent low-speed torque. These elements made the BOSS 302 a unique mill compared to what the rest of Detroit had to offer at the time. The BOSS 302s biggest shortcoming is port sizing, which is something Ford has rarely been able to get right. Perfect fitment, good quality heads on a budget! This is where you must spend the money. Very nice , Made in USA quality and same price as off shore heads. good luck with that. 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 .480-inch lift B303 hydraulic. The head bolts used on a Boss 302 were a flanged-style head bolt. Have you got the intake? If I wasnt on a time crunch, I would have returned these heads. This engine was built in the 80s by someone with way to much money. Im trying to build my 289 on a budget and saw a pair of Boss 302 heads online for $400 and thought why not. 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! Save my name, email, and website in this browser for the next time I comment. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Today, the aftermarket lineup of Ford cylinder heads has plenty of castings from which to choose. If youre using stock pistons, get the version of these heads with the smaller intake valves (Part #5023). Building LS garbage? Whoever invented that crap ought to be shot. Its not a good time to be building a performance engine. supershifter2 :shocked: :shaking: < :bs: ! 4V. crank, offset-grinding it to a smaller crankpin diam. Does any 351 Cleveland head fit it? Ford New Boss 302 w/351C HDS Hex Head Stud Kit. This makes it easy to torque and lower cost for better aftermaket bolts and studs. 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. We had a grad student at UMR custom design his own crossflow head for that engine and the entire thing was CNC'd from one piece of aluminum. D1ZE service block and aluminum rods. Ford Racing teamed up with Jon Kaase to redesign their 429 Cobra Jet cylinder heads, and the results are these Super Cobra Jet heads. Buy It Now +C $186.98 shipping estimate. Be the first to rate this post. 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 . A recent test of a prototype set of Hammerhead's castings bolted on a 427ci small-block stroker produced over 600 hp with a streetable hydraulic roller camshaft and 600 lb-ft of torque. The Chevrolet used a 1.50:1 rocker, while on the Cleveland head, they used a 1.73 ratio. 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). 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.
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