Afr 220 eliminator dyno

Afr 220 eliminator dyno

Heads, Blower Cam, 9. Several years ago, Muscle Mustangs and Fast Fords began extensive testing on the available heads for the 5. The articles began with the August issue and continued for quite a few issues.

The following bench flow data was taken from these articles. The data was all given at 28" of water. Included in these articles were how the heads performed on the dyno, valve sizes, spring rates, compression ratios, combustion chamber sizes, and installation info.

The information in the articles was extensive and worth purchasing a back copy if you really want to look into the differences in the heads. I've merely given a base sample of the testing figures as published. LT1 Heads. Canfield BBC Heads. Dyno Test Criteria. Cam Heads 9. Heads Steel Crank, Pink Rods, 8.

Intake Lift. Calculator Hp from CFM. The new combustion chamber is markedly different than the old. Super Victor RPM Cast Ported Cast Ported Cast Ported 3, 3, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 7, View on Mobile.

Engine built and dyno tested by AFR. Heads cc Race Ready Heads Steel Crank, Pink Rods, 8. Stock E7tE. Edelbrock Performer. AFR World Windsor Jr. GT Alum.

Brodix ST Exhaust Lift. Ford GTX. Edelbrock Performer RPM. World Windsor Alum. Canfield Ford Z Brodix M2 ST 5.This is how AFR's Tony Mamo spends his rainy days, locked away with a grinder looking for hidden horsepower. Paraphrasing Dr. Seuss's magnificent Cat-in-the-Hat, "Calculatus Eliminatus is the best friend that you've got; the way to find the missing horsepower is to find out where it's not! As we all know, the process was quite effective in locating one missing moss-covered, three-handled, family whatever it was, but the same principle holds true when you spend that rainy day searching not for family feline brick-a-brack, but for absentee airflow.

Just ask AFR's own Tony Mamo, the cat inside the hat so to speak, as his monumental task was to take an already impressive AFR small-block cylinder head and make it even better.

Given their impressive performance, it's hard to believe that the original AFR line of small-block heads dates way back to Available in port volumes ranging from cc to cc for the street heads and all the way up to the cc for the race versions AFR also makes a cc raised port race headtesting has proven the complete AFR lineup to offer impressive airflow especially given the port volumes.

Better yet, AFR has made sure all of the airflow offered by its small-block heads converted directly to horsepower. Big flow numbers are one thing, but big flow numbers that produce equally big power numbers are what distinguish a good head from a great one. Since it was time to retool, AFR took this opportunity to refurbish the existing line of small-block Chevy heads. As is often the case, the simple refurbish turned into a whole new head.

The new Eliminator series offers a weight savings of 4 pounds compared to the original AFRsimproved oil drain back and a sizable increase in airflow. Despite the impressive power production offered by the existing line, AFR decided it was high time to up the power ante. Not surprisingly, revamping the lineup coincided with retooling the product line. Rather than simply retool to streamline the production process, the gang at AFR decided to use the opportunity to upgrade its existing SBC product line.

This is obviously good news for enthusiasts, as we have managed to produce exceptional power numbers with the previous AFR small-block heads and having an upgraded version will help take any build mild or wild to the next performance level.

Revamping the product line sounds easy while standing around water cooler, but actually putting into action takes a great deal of hard work. This was no easy task given the already impressive performance, but with porting tools, knowledge and experience, Tony set to work on redesigning the ports, chambers and even valve train to modernize the degree heads. Having had such good success with its big-block Chevy and new LS-series heads for the LS1, LS2 and LS6they decided the original small-block deserved equal attention.

In fact, many of the improvement ideas came from the LS-head program, namely the valvetrain upgrades. Tony went looking for two things when reviewing the existing valvetrain package, namely improving flow and reducing mass. The additional flow is somewhat self explanatory, but a reduction in valvetrain mass will improve the rpm potential of the motor, thus allowing more power at higher engine speeds.

There is nothing more frustrating than having valve float ruin a perfectly good power curve.An old hot rodding adage is "airflow is everything. For years, gearheads have been porting cylinder heads and installing oversized valves in the name of increased flow, but just how much horsepower is realized by way of better-flowing ports? Moreover, is port shape more important than port volume? For that we did back-to-back dyno testing to determine exactly where myth meets reality.

All tests were done on the same small-block, on the same day, using the same dynamometer.

afr 220 eliminator dyno

The Test Mule The mule motor for this comparo is a moderately healthy that was originally built in the mid-'80s using old-school speed secrets. TRW pop-up pistons swing from stock GM 5.

AFR 220cc SBC Eliminator Racing Heads

The rotating assembly is balanced, but is of only decent strength, with the exception of the Milodon heavy-duty rod and main bolts. In '86 the heads were sent to Engine Prototype Development EPD for a competition valve job, pocket porting, gasket matching, and the installation of necked-down stainless steel 2.

COMP Cams 1. Power was good but certainly not stunning, and there was one key element of old school that needed to go--namely the heavy, old-tech Bow Tie castings.

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The Big Question Everybody talks a big game about how aftermarket heads make big power, but what are we really talking about here, 50, horsepower? We've seen too many tests where aftermarket heads make big power over smog-o-rama boat-anchors, but that's a no-brainer. Particularly, we wanted to know how well aftermarket heads stack up against decently designed, mildly ported heads. To keep the playing field level, the AFR s were decked to generate 70cc com-bustion chambers to match the 70cc chambers on the Bow Tie heads.

While the AFRs come standard with 74cc or 68cc chambers, you can custom-order them with a specific deck height, and consequently a specific combustion chamber size. Without a doubt, if the combustion chambers were smaller, compression would have been higher and the engine would have achieved more. However, the focus of this dyno test was to keep variables to a minimum in order to maximize consistency and testing accuracy. Flow Testing If airflow is everything, then it would make sense to run the largest, highest-flowing intake ports possible, right?

Well, not exactly. As flowbench testing has proven, port shape is just as important as port size in determining overall flow. Interestingly, our ported Bow Tie heads actually had larger cc intake runners and larger valves, but they flowed less than the smaller-runner, smaller-valve AFRs.

Another thing to remember is that smaller runners deliver better velocity resulting in quicker throttle response and better low-rpm powerso for the street it is always advisable to employ the smallest runner possible while still fulfilling your cfm needs.

AFR generates its outstanding flow numbers for a variety of reasons. The CNC-porting maximizes the runner shape and volume and is absolutely consistent from port to port and head to head. All too often, hand-porting delivers a fabulous first port with increasingly worse results as the man with the grinder tires throughout the day. In the following chart, compare the intake and exhaust port flow between the ported Bow Tie head and the AFR casting. Although the AFR s flow more peak cfm, of equal importance is that they also flow better in the lower lift areas, which translates to better low-rpm power and crisper throttle response.

All data was measured using the industry standard inches water depression baseline. The ported Bow Tie Phase I cast-iron cylinder heads were inspected and then flow-bench tested to determine intake and exhaust flow at different valve-lift heights. The combustion chambers on the Bow Tie heads have been smoothed out and opened up around the edges of the valves. For increased flow, oversized 2. With the valves removed, you can see some of the bowl blending and porting.

Also note that the Bow Tie heads feature an angle-plug spark-plug design said to increase power by directing the spark path more toward the intake valve. The AFR heads, however, feature a straight-in plug design. Using a burette, the Bow Tie combustion chamber size was measured at 70 cc. To keep the field level, the AFR s were decked to deliver 70cc chambers, ensuring the same compression ratio. Eyeing the intake ports on the Bow Tie heads reveals mild porting as well as gasket matching.Afr Eliminator Dyno.

To assure a long-standing tradition to performance, AFR is bringing up a new generation of racers and engineers to meet the demands of tomorrow's engine builders.

This is AFR's largest, best flowing 23 degree aluminum cylinder head for use with conventional rocker arms.

Please note that with.

afr 220 eliminator dyno

An excerpt from our engine ad about our new dyno. Oil changed every twelve hours. Recommended for race applications or radical "Pro Street" style builds.

It is very simple to build your own AFR Meter, and all you need is a little electronics experience and that's about it.

afr 220 eliminator dyno

Timing on each fuel is low, and I kept it intentional that way. The heads didn't need as much timing as older style ones or the extra exhaust duration. She is wont be second. Check for Availability.

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What plugs for boost? Pushrod Tech: Aug 28, Afr 's to big for low comp ? Pushrod Tech: May 22, Related Videos. Combustion of a stoichiometric mixture exactly enough air to burn all the fuel results in Whats ironic is the original flowed alot less and was an absolute nightmare with stock style rockers.

Donman - yes AFR makes great heads. Products matching "afr-chevy-sbceliminator-headscccc-fully-built-pairhr" Found 0 results. Am I going to see the difference between. The powerful AFR cc intake port small block Chevy angle plug cylinder heads are available in three stages of performance.

This product is made of high-quality materials to serve you for years to come. The heads make tons of power and the car still has a lot of low end torque.

AFR heads right out of the box, Crower roller, Crower shaft rockers, Holley ProRam with a pair of Proform , nothing real trick here, But was enough to put the car nearly on the bumper. Flows quite a bit more than our former head as well non Eliminator version.

Here are the dyno results. I thought these heads topped out at around HP on a stock block. I have heads, ported, milled, 2. This was just an engine dyno. Tedder, I sent you a pm, got a notification you responded, but Tapatalk shows I have no messages doesnt even show my sent message, are you on the HQ Fb and k could find you there?The legendary small-block Chevy engine has been used in every way you can think of in drag racing, and it still powers many cars at the track today.

Air Flow Research AFR provides SBC fans with cylinder heads that flow plenty of air and now they have another intake manifold available for those heads. To ensure the cylinder heads and intake worked together, AFR optimized the intake tract to provide more performance, using its cc program.

The intake is perfect for engines that are designed to have a 6, rpm operating range, as well. Each of the Eliminator Dual Plane Intakes are cast and machined right here in the United States — this gives AFR a high level of quality control over the final product. To give its customers plenty of engine size options, AFR made sure the intake would work on mills from all the way up to cubic-inches.

If you want to spray some nitrous through the Eliminator, AFR has you covered: each intake has nitrous bosses already cast in and ready for plumbing. The intakes also have dual distributor clam hold-downs to prevent any movement of your distributor and water outlets at both ends of the intake to provide more cooling. Build your own custom newsletter with the content you love from Dragzine, directly to your inbox, absolutely FREE!

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Article Sources. Air Flow Research.

AFR Heads, 1110 SBC AFR 220 Eliminator Competition Heads, 65cc

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Diesel Army. Engine Tech.Just plug it in and you're all set!. Thank you for a great first full year in business. AFR Cylinder Heads. For example the AFR s with the comp cam with. PAC Racing Spring 1. The springs in this setup are to operate with Solid roller cams up to. These new Eliminator PRO cylinder heads, in Valves and studs are in stock GM L98 locations just like the cc, cc, and cc series cylinder heads. March performance under drive pulleys.

This product is made of high-quality materials to serve you for years to come. Unlike the previousthe new Eliminator version requires no special parts. Messages: Likes Received: Conserves capital and credit. Flows quite a bit more than our former head as well non Eliminator version. Unlike the previous cc, the new Eliminator version requires no special parts.

afr 220 eliminator dyno

Increased power, increased RPM, better durability. But i dont think you need them. The AFR Eliminator thumps, especially if you were to use it on a larger-displacement small-block in the area of to inches. These dyno tests were performed on an engine dyno utilizing our own dyno motor built for us by Jon Barrett Racing Engines. AFR 's 70cc chamber. They come standard with stainless steel 2. This test was conducted at American Speed 23rd Ave.

I am running a Comp Cams Hydraulic Roller.Air Flow Research AFR, the company that produces the finest in cylinder heads, has announced the release of their brand new SBC Eliminator dual plane aluminum intake manifold for the ubiquitous small block Chevy engine platform. Developed to match the port designs of their popular cylinder heads as close as possible, AFR has designed the manifold to provide an optimized intake tract for increased performance.

They even thought to cast in nitrous bosses. Photo courtesy of Air Flow Research. They feature dual distributor clamp hold downs, and front and rear water outlets for additional cooling. Carburetor pad height is 4. They will not fit under stock Corvette hoods.

F or over 45 years, Air Flow Research has been defining technological leadership in cylinder head manufacturing and flow dynamics. Air Flow Research stands by their claim that their cylinder heads outflow and out-horsepower everything in their league.

As a leader today, Air Flow Research is investing in the horsepower of tomorrow with new manufacturing technology, dyno testing, and proprietary flow testing methods. Visit www. Build your own custom newsletter with the content you love from Street Muscle, directly to your inbox, absolutely FREE! We will safeguard your e-mail and only send content you request. We'll send you the most interesting Street Muscle articles, news, car features, and videos every week.

We promise not to use your email address for anything but exclusive updates from the Power Automedia Network. About Us Sponsors Advertising. Part 1: An Authentic Corvette Restoration. What is Pro Touring?

Logo courtesy of AFR. Article Sources. Air Flow Research. Latest News. More Stories. Hot Rods and Muscle Cars in your inbox. Subscribe Now. We think you might like No thanks. Classic Ford Performance. Street Rods. Classic Chevy Magazine.