This is the Head Bolt Torque Sequence (Pattern) for Ford's small block. I think the higher RPM one had larger valvesand ports, right? DONT USE ANYTHING ELSE OR IT WILL LEAK. Edelbrock E-Street cylinder heads are just the ticket. Hate to tell you this but a BOSS 302 has Cleveland type heads. The 1968 Trans Am season was a disaster. The .10 difference in bore spacing( but the bolt pattern is the same square four as the smallblock) makes me think 3. GT40 heads use 1.84 intake / 1.54 exhaust. A borescope down the intake revealed lots of oil in the intake runners near the valves. 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). I had 90 runs on an original Boss 302 in a 70 Mustang. 70 Boss 302 intake 2.19 / exhaust 1.71. 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. 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. The Edelbrock 351C head shows a controlled "swirl ramp" that comes on lightly at 100 RPMs starting at .450" lift and increases steadily to 2000 RPMs at .600" lift. These lightweight aluminum heads bolt up to your small block Ford and feature 190cc intake/60cc exhaust runners, 60cc combustion chambers, and 2. 185 cc Intake. The darned thing was rabid dog fast. Are there any aftermarket heads for it? Just my thought. Much of this gain over the stock 345-hp Boss 302 rating can be attributed to Westech's lower 140-degree engine coolant test procedure and open dyno headers. Building LS garbage? Alum. For Use w/289/302/351 Windsor-Style Engines. It was the most expensive of all the heads we tested. The rocker studs are 7/16, not 3/8. We evaluated each head on the flow bench, average overall power, and we calculated average horsepower-per-dollar. 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. Combine Edelbrock quality with excellent power and a highly competitive price, and the E-Street Edelbrock heads strike us as an excellent choice. Crate Engine, 302 C.I.D. But for perhaps a majority of enthusiasts, this evaluation may be too simplistic. 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. Flashing in ports was unacceptable. 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. However, there are a few notable differences between the Coyote in the F-150 and the Coyote in the Mustang. Not all that long ago, the small-block fan's only choice for Ford cylinder heads was the classic 351W Ford heads swap on a 302. stud kit is of poor quality everything else in my order was good quality. The Ford heads did well during the testing, making a peak of 362 hp. 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. The BOSS 302s biggest shortcoming is port sizing, which is something Ford has rarely been able to get right. Ford has always been a car company that dared to go where no automaker had ever gone before. These heads feature A356 aluminum castings that are heat-treated to T-6 specs for superior casting strength and quality. Though peak horsepower is a quick reference point for evaluation, we prefer to use average power in these comparisons because it always produces a better picture of overall performance. 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. Batten of Romulus, Mich who did the furnance-blazed heads. ported and polished heads can also provide good results, but they may require more work to install and tune properly. That tradition dates back to the companys founding in 1903. Great velocity with these heads. I believe C.J. The result was a powerful 290-horse factory screamer with peak street power coming in around 6,000 rpm. The 302 Tunnel Port already had a terrific four-bolt main block and steel crank along with beefed up C3AE 289 rods and special pistons designed for the Tunnel Port heads. They still have classes? It used to be listed in the FRRP catalog. Come join the discussion about restoration, modifications, NOS parts, troubleshooting, VIN codes, and more! reach with flat gasket seat. 340 HP Boss, Long Block, Assembled, Internal Balance, Aluminum Cylinder Heads, Ford, Small Block Windsor, Each Part Number: FMS-M6007X2302E ( 1 ) Free Shipping Special Order $10,649.99 Not Available At This Time This product cannot be ordered at this time. Otherwise, pair these with some flat top pistons with the correct valve reliefs. Assembled. 500 max! THAT IS UNACCEPTABLE IN MY BOOK. http://forums.vintage-mustang.com/vintage-mustang-forum/721154-1970-mach-1-h-code-build.html. You MUST flycut the valve reliefs on the pistons larger if using stock pistons. These elements made the BOSS 302 a unique mill compared to what the rest of Detroit had to offer at the time. There is no flat spot and these engines will pull from 2000 against any rival including a Windsor. So, a big head, lots of camshaft, an aluminum intake, and a Holley four-barrel. Purchased a long block on CL. The store will not work correctly in the case when cookies are disabled. 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. 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. But as others have mentioned there are modifications that must be done to make it work. 125 of gap at the front and rear ends and you are running a blower or a turbo then I would suggest making some spacers to take up the gap on the ends because anything over. If this becomes a bit more subjective by adding in power (and why wouldn't you? If you used windsor heads its not a BOSS. The runners are as cast and a bit rough. They use a Cleveland style quench chamber and standard 302 Boss/351 Boss/351C/351 SVO valve train parts (will accept 2.19"/1.71" valves). We did this to expand the scale to show the differences in power near peak horsepower. There are many different types of cylinder heads for Ford 302 engines, so it is difficult to make a definitive conclusion about them. You will certainly feel that in the car. Maximum output for less money!. Weve got 302 fords with gt40 3 bar heads making over 500 hp. Neither was really that streetable but of the two the 70 had the smaller valves whick helped a little with the low rpm feel. Just A Taste is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. Was running 850 dbl pump Holley with 4:56 gears, and I was running 12:20s at over 112 mph in the quarter. . Street 512 Mopar motor in a Dodge Dart . http://fordsix.com/forum/viewtopic.php?t=33048, 1971 Ford Maverick - Budget 10-Second Turbocharged Maverick Coupe - Car Craft Magazine. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. Here you can see exactly where each engine outshined the other, and by how much. This is where you must spend the money. For those who consider swirl a detriment to producing power this is a positive thing. 2.02/1.60 in Valves. The Edelbrock E-Street cylinder heads offer American made quality and affordable performance. It should be in the product description and specs. The push-rods needed to be extended using a 2-piece design w/a small aluminum sleeve (that slides in the block) to join the 2 pushrods. If youre using stock pistons, get the version of these heads with the smaller intake valves (Part #5023). This is my first engine build, let me know if Im doing it all wrong. Exhaust - 1.72 inches. Fig. high power capabilities. That would probably have been the only intake available to work , at that time. 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. Jul 7, 2011 I've an Offy Boss 302 tunnel ram that I'd like to use in a build and was wondering aside from the 4V cast iron heads, which aluminum heads will work with this combo. The cylinder head also contains the spark plug and fuel injector(s). 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. refresh the page. In 1970 the Boss 302 was a Camaro killer, it could go 0-60 mph in 6.0 seconds. The recommended spark plug for your typical application is the Champion 792 plug, gapped at. 1969 Put on a 351w in a 1979 Tbird. Im looking for three Ford Cleveland 4V engines. 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. Renegade Street. We learned on the first few pulls that we had too much carburetor with our 750 cfm Holley 4160 and too little camshaft. Hack said: The size of 302 valves has varied a little in some performance versions over the years. 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.. Peak power numbers are always fun to throw around, but car-crafters are also very astute at determining what all that power will cost. Better compression then stock, better breathing then stock. 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. we all have our shortcomings. They are Worth it. THE NEXT ISSUE WAS VALVE SPRING INSTALL HEIGHT. All rights reserved. Would modifying the heads bring down the value of the heads? This combo has been dynod at 460-ish hp at 5000 rpm and 550 ft lbs of torque at 2000 rpm. I expected cleanup, but not like this. 1.90/1.60 in Valves. Exhausts have only a. How can you call it racing if you're putting the brakes on before the finish line? Compatible with Chevy Small Block 302/327/350/383/400 SBC 200cc Intake 68cc Angled Plug Aluminum Bare Cylinder Head $238.88 $ 238 . I figured the Boss would make peak power. 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. No more dyno there. Stroke that thing. 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. 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. So howd they stack up? Bought these and compared to the other (PC). . I think it was based on the Cleveland design. The BOSS piston was a unique item, configured to use the 289HP rod with the 302 stroke. writing. As I recall from articles way back, this is an expensive process. The heads alone are excellent fit and quality. Though I rated the overall part as good, the areas that really count are just average. The 302 has a 9:1 compression ratio, while the 347 and 363 have 9.6:1 and 10.2:1, respectively. We got our answer. You will need the boss piston to go with the canted valves.. No. The BOSS head was functionally identical to the 351C 4V head. Cylinder Head 190cc Assembled. 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. Because the new 351 engine had the same bore spacing as the 289/302, it seemed logical for Ford to adapt this high-performance cylinder head to the small-block Ford V8. Both these motors were factory-rated at the same 290 horsepower, but that number is suspect, says Holdener. 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. 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. What looks like parting lines are huge in some places, one exh runner has a stick of Aluminum protruding into the runner (pic 1). See the top reviewed local exterior and siding contractors in Hohenthann, Bavaria, Germany on Houzz. SB Ford WP Man O'War iron block/Man O'War aluminum head Head Bolt Kit. Would it mess with the computer really bad. Recommended spark plugs are Champion RC12YC or equivalent 14mm x 3/4in. For use on pre-pollution controlled vehicles only. So get comfortable, slip on your Ford-colored glasses, and hang on. The TFS heads appeared to be the big dog in the room when it came time for testing. The holes are also there in a 350 block and Felpro gasket as well as the 5073 head.